*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --nav-h: 56px;
  --sidebar-w: 240px;

  /* Surfaces — deep navy with subtle blue tint */
  --bg:        #0a0d1a;
  --surface:   #11142a;
  --surface2:  #181c33;
  --surface3:  #20253e;
  --border:    #1f2440;
  --border2:   #2d3354;

  /* Text — high-contrast hierarchy (Linear pattern) */
  --text:      #f7f8fc;
  --text-muted:#a3a8c0;
  --text-dim:  #5e6480;

  /* Accent — Pink/Lila/Indigo gradient (Kinnectric inspired) */
  --accent:       #c084fc;
  --accent-hover: #a855f7;
  --accent-dim:   #2a1f3d;
  --accent-soft:  rgba(192,132,252,0.07);
  --accent-glow:  rgba(192,132,252,0.22);

  /* Pink-to-Violet gradient — for buttons + active states */
  --accent-gradient:        linear-gradient(135deg, #ec4899 0%, #a855f7 50%, #6e7aff 100%);
  --accent-gradient-hover:  linear-gradient(135deg, #db2777 0%, #9333ea 50%, #5862e8 100%);

  /* Glow colors — used for backlight halos around key elements */
  --glow-pink:   rgba(236,72,153,0.18);
  --glow-violet: rgba(168,85,247,0.18);
  --glow-indigo: rgba(110,122,255,0.18);

  /* Status — slightly desaturated for premium feel */
  --oft-bg:      #2a1418; --oft-text:     #f97570; --oft-border:   #4a1f23;
  --manchmal-bg: #2a2010; --manchmal-text:#f5b94a; --manchmal-border:#4a3a18;
  --selten-bg:   #122821; --selten-text:  #2bcfa0; --selten-border: #1a4838;
  --nie-bg:      #181a22; --nie-text:     #6b7080; --nie-border:    #262a35;

  --danger: #f97570;
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.45);
  --shadow:    0 1px 2px rgba(0,0,0,0.5), 0 6px 18px rgba(0,0,0,0.35);
  --shadow-lg: 0 4px 14px rgba(0,0,0,0.5), 0 18px 48px rgba(0,0,0,0.45);
  --radius:    10px;
  --radius-sm: 6px;
  --radius-lg: 14px;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'Fira Code', Consolas, monospace;
  --font-feature: "cv11", "ss01", "ss03";
}

@supports (font-variation-settings: normal) {
  :root { --font-sans: 'Inter var', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; }
}

/* ── SUNSET THEME (Dark, warm orange/red/pink) ── */
.theme-sunset {
  --bg:        #1a0e08;
  --surface:   #261812;
  --surface2:  #33231b;
  --surface3:  #422f23;
  --border:    #3d2a1f;
  --border2:   #553c2c;

  --text:      #fef3e9;
  --text-muted:#d4b59a;
  --text-dim:  #8a6e57;

  --accent:       #fb923c;
  --accent-hover: #f97316;
  --accent-dim:   #3d1f0e;
  --accent-soft:  rgba(251,146,60,0.08);
  --accent-glow:  rgba(251,146,60,0.25);

  --accent-gradient:        linear-gradient(135deg, #f43f5e 0%, #f97316 50%, #fbbf24 100%);
  --accent-gradient-hover:  linear-gradient(135deg, #e11d48 0%, #ea580c 50%, #f59e0b 100%);

  --glow-pink:   rgba(244,63,94,0.20);
  --glow-violet: rgba(249,115,22,0.20);
  --glow-indigo: rgba(251,191,36,0.18);

  --oft-bg:      #2e1418; --oft-text:     #f87171; --oft-border:   #4a2026;
  --manchmal-bg: #2e2210; --manchmal-text:#fbbf24; --manchmal-border:#5e4220;
  --selten-bg:   #1a2812; --selten-text:  #84cc16; --selten-border: #345020;
  --nie-bg:      #1f1812; --nie-text:     #8a7060; --nie-border:    #322620;

  --danger: #f87171;
}

/* ── FOREST THEME (Dark, green & emerald) ── */
.theme-forest {
  --bg:        #0a1410;
  --surface:   #122019;
  --surface2:  #1a2c22;
  --surface3:  #233a2c;
  --border:    #1e3528;
  --border2:   #2d4a38;

  --text:      #e8f5ed;
  --text-muted:#9bc2a8;
  --text-dim:  #5e8a6e;

  --accent:       #34d399;
  --accent-hover: #10b981;
  --accent-dim:   #0e2e22;
  --accent-soft:  rgba(52,211,153,0.07);
  --accent-glow:  rgba(52,211,153,0.22);

  --accent-gradient:        linear-gradient(135deg, #84cc16 0%, #10b981 50%, #14b8a6 100%);
  --accent-gradient-hover:  linear-gradient(135deg, #65a30d 0%, #059669 50%, #0d9488 100%);

  --glow-pink:   rgba(132,204,22,0.18);
  --glow-violet: rgba(16,185,129,0.20);
  --glow-indigo: rgba(20,184,166,0.18);

  --oft-bg:      #2a1418; --oft-text:     #f97570; --oft-border:   #4a1f23;
  --manchmal-bg: #2e2510; --manchmal-text:#facc15; --manchmal-border:#5a4218;
  --selten-bg:   #0e2e22; --selten-text:  #34d399; --selten-border: #1f4d3b;
  --nie-bg:      #161e1a; --nie-text:     #6b8070; --nie-border:    #243028;

  --danger: #f97570;
}

/* ── CYBERPUNK THEME (Dark, neon magenta & cyan) ── */
.theme-cyberpunk {
  --bg:        #0a0014;
  --surface:   #14001f;
  --surface2:  #1f0a2e;
  --surface3:  #2a0d3d;
  --border:    #2d0d40;
  --border2:   #4d1a66;

  --text:      #f5e6ff;
  --text-muted:#b18ad6;
  --text-dim:  #6e4a8c;

  --accent:       #f0abfc;
  --accent-hover: #e879f9;
  --accent-dim:   #2d0d40;
  --accent-soft:  rgba(240,171,252,0.08);
  --accent-glow:  rgba(240,171,252,0.30);

  --accent-gradient:        linear-gradient(135deg, #f0abfc 0%, #d946ef 50%, #06b6d4 100%);
  --accent-gradient-hover:  linear-gradient(135deg, #e879f9 0%, #c026d3 50%, #0891b2 100%);

  --glow-pink:   rgba(217,70,239,0.30);
  --glow-violet: rgba(168,85,247,0.30);
  --glow-indigo: rgba(6,182,212,0.30);

  --oft-bg:      #2e0a18; --oft-text:     #ff5599; --oft-border:   #4d1538;
  --manchmal-bg: #2e1a08; --manchmal-text:#facc15; --manchmal-border:#5a3818;
  --selten-bg:   #0a2e2a; --selten-text:  #22d3ee; --selten-border: #18504a;
  --nie-bg:      #1a1428; --nie-text:     #7560a0; --nie-border:    #2a2040;

  --danger: #ff5599;
  --shadow-sm: 0 1px 2px rgba(217,70,239,0.20);
  --shadow:    0 1px 2px rgba(0,0,0,0.5), 0 6px 18px rgba(217,70,239,0.20);
  --shadow-lg: 0 4px 14px rgba(217,70,239,0.25), 0 18px 48px rgba(6,182,212,0.18);
}

/* ── LIGHT THEME ── */
.theme-light {
  --bg:        #fafbfc;
  --surface:   #ffffff;
  --surface2:  #f4f5f8;
  --surface3:  #e8eaf0;
  --border:    #e3e6ec;
  --border2:   #cfd3dd;

  --text:      #0a0c14;
  --text-muted:#5a6070;
  --text-dim:  #8a90a0;

  --accent:       #a855f7;
  --accent-hover: #9333ea;
  --accent-dim:   #f5e8ff;
  --accent-soft:  rgba(168,85,247,0.06);
  --accent-glow:  rgba(168,85,247,0.22);

  --accent-gradient:        linear-gradient(135deg, #ec4899 0%, #a855f7 50%, #6366f1 100%);
  --accent-gradient-hover:  linear-gradient(135deg, #db2777 0%, #9333ea 50%, #4f46e5 100%);

  --glow-pink:   rgba(236,72,153,0.10);
  --glow-violet: rgba(168,85,247,0.10);
  --glow-indigo: rgba(99,102,241,0.10);

  --oft-bg:      #ffe8e6; --oft-text:     #d63832; --oft-border:   #f5c5c0;
  --manchmal-bg: #fff5d6; --manchmal-text:#a16e08; --manchmal-border:#f0d68a;
  --selten-bg:   #d6f5e7; --selten-text:  #167a4a; --selten-border: #95dec0;
  --nie-bg:      #eef0f5; --nie-text:     #6a7080; --nie-border:    #d0d5e0;

  --danger: #d63832;
  --shadow-sm: 0 1px 2px rgba(15, 20, 50, 0.05);
  --shadow:    0 1px 2px rgba(15, 20, 50, 0.04), 0 4px 14px rgba(15, 20, 50, 0.08);
  --shadow-lg: 0 4px 14px rgba(15, 20, 50, 0.06), 0 18px 48px rgba(15, 20, 50, 0.10);
}

body { transition: background 0.25s ease, color 0.25s ease; }

body {
  font-family: var(--font-sans);
  font-feature-settings: var(--font-feature);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 14px;
  line-height: 1.55;
  letter-spacing: -0.005em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4 {
  letter-spacing: -0.022em;
  font-weight: 700;
  line-height: 1.2;
}

h1 { font-size: 28px; letter-spacing: -0.03em; }
h2 { font-size: 20px; letter-spacing: -0.025em; }
h3 { font-size: 16px; letter-spacing: -0.02em; }
h4 { font-size: 14px; letter-spacing: -0.015em; }

::selection { background: var(--accent); color: #fff; }

/* ── LOGIN ── */
.login-overlay {
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse at top, var(--glow-pink) 0%, transparent 50%),
    radial-gradient(ellipse at bottom right, var(--glow-violet) 0%, transparent 50%),
    var(--bg);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  overflow: hidden;
}

.login-box {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius-lg);
  padding: 40px 36px 32px;
  width: 380px;
  max-width: 92vw;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-lg);
  position: relative;
}

/* Backlight-Glow um die Login-Box */
.login-box::before {
  content: '';
  position: absolute;
  inset: -40px;
  background:
    radial-gradient(circle at 30% 0%, var(--glow-pink) 0%, transparent 55%),
    radial-gradient(circle at 70% 100%, var(--glow-violet) 0%, transparent 55%);
  filter: blur(50px);
  z-index: -1;
  pointer-events: none;
}

.login-logo {
  font-size: 38px;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  line-height: 1;
  margin-bottom: 6px;
  filter: drop-shadow(0 4px 18px var(--glow-violet));
}

.login-box h2 {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.025em;
}

.login-sub {
  font-size: 13.5px;
  color: var(--text-muted);
  margin-bottom: 10px;
  letter-spacing: -0.005em;
}

.login-box input {
  width: 100%;
  padding: 11px 14px;
  background: var(--surface2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s;
}

.login-box input::placeholder { color: var(--text-dim); }
.login-box input:focus { border-color: var(--accent); }

.login-btn { width: 100%; margin-top: 4px; }

.login-error {
  font-size: 13px;
  color: var(--danger);
  text-align: center;
}

.auth-toggle {
  margin-top: 14px;
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
}

.auth-toggle-btn {
  background: none;
  border: none;
  color: var(--accent);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  padding: 0;
  margin-left: 4px;
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.13s;
}
.auth-toggle-btn:hover { border-bottom-color: var(--accent); }

/* ── Verify-Pending / Verify-Success Screens ── */
.verify-info {
  font-size: 13px;
  color: var(--text-muted);
  text-align: center;
  line-height: 1.55;
  padding: 0 8px;
}

.verify-direct-link {
  display: inline-block;
  margin-top: 14px;
  padding: 8px 14px;
  font-size: 12px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px dashed var(--accent-glow);
  border-radius: 100px;
  text-decoration: none;
  transition: background 0.13s, color 0.13s;
}

.verify-direct-link:hover {
  background: var(--accent-dim);
  color: #fff;
}

.auth-toggle-btn:hover { color: var(--accent-hover); }

/* ── NAVBAR ── */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(8, 9, 13, 0.85);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  z-index: 200;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
  min-width: 160px;
  padding-left: 6px;
}

.nav-logo {
  font-size: 18px;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 2px 8px var(--glow-violet));
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 220px;
  justify-content: flex-end;
}

.nav-username {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
  background: transparent;
  border: 1px solid transparent;
  padding: 4px 12px;
  border-radius: 100px;
  cursor: pointer;
  font-family: inherit;
  transition: background 0.13s, color 0.13s, border-color 0.13s;
}

.nav-username:hover {
  background: var(--surface2);
  color: var(--text);
  border-color: var(--border);
}

.nav-username:empty { display: none; }

.btn-logout {
  background: transparent;
  border: 1px solid var(--border2);
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 500;
  padding: 5px 11px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 0.13s, color 0.13s, background 0.13s;
}

.btn-logout:hover { background: var(--oft-bg); border-color: var(--oft-border); color: var(--oft-text); }

/* ── THEME-PICKER (Dropdown wie im Screenshot) ── */
.theme-picker { position: relative; }

.theme-picker-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px 6px 6px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  color: var(--text);
  cursor: pointer;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  transition: background 0.15s, border-color 0.15s;
}

.theme-picker-btn:hover {
  background: var(--surface2);
  border-color: var(--accent);
}

.theme-picker-swatch {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--accent-gradient);
  box-shadow: 0 0 0 2px var(--surface), 0 0 8px var(--accent-glow);
  flex: 0 0 auto;
}

.theme-picker-arrow {
  font-size: 10px;
  color: var(--text-muted);
  margin-left: 2px;
  transition: transform 0.18s;
}

.theme-picker-btn[aria-expanded="true"] .theme-picker-arrow {
  transform: rotate(180deg);
}

.theme-picker-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  min-width: 320px;
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: 14px;
  box-shadow: var(--shadow-lg);
  padding: 12px;
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-height: 70vh;
  overflow-y: auto;
}

.theme-picker-label {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--text-dim);
  padding: 6px 10px 8px;
  text-transform: uppercase;
}

.theme-option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 10px;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  color: var(--text);
  transition: background 0.13s, border-color 0.13s;
  width: 100%;
}

.theme-option:hover {
  background: var(--surface2);
  border-color: var(--border2);
}

.theme-option.active {
  background: var(--accent-soft);
  border-color: var(--accent);
}

.theme-option-preview {
  width: 56px;
  height: 36px;
  border-radius: 6px;
  flex: 0 0 auto;
  border: 1px solid rgba(255,255,255,0.08);
  position: relative;
  overflow: hidden;
}

.theme-option-preview::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 4px;
  right: 4px;
  height: 3px;
  border-radius: 2px;
  background: var(--preview-accent, linear-gradient(90deg, #ec4899, #a855f7, #6e7aff));
  opacity: 0.95;
}

/* Preview-Swatches pro Theme */
.preview-dark      { background: linear-gradient(135deg, #11142a 0%, #0a0d1a 100%); --preview-accent: linear-gradient(90deg, #ec4899, #a855f7, #6e7aff); }
.preview-light     { background: linear-gradient(135deg, #ffffff 0%, #f4f5f8 100%); --preview-accent: linear-gradient(90deg, #ec4899, #a855f7, #6366f1); }
.preview-sunset    { background: linear-gradient(135deg, #261812 0%, #1a0e08 100%); --preview-accent: linear-gradient(90deg, #f43f5e, #f97316, #fbbf24); }
.preview-forest    { background: linear-gradient(135deg, #122019 0%, #0a1410 100%); --preview-accent: linear-gradient(90deg, #84cc16, #10b981, #14b8a6); }
.preview-cyberpunk { background: linear-gradient(135deg, #14001f 0%, #0a0014 100%); --preview-accent: linear-gradient(90deg, #f0abfc, #d946ef, #06b6d4); }

.theme-option-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.theme-option-name {
  font-size: 14px;
  font-weight: 700;
  color: var(--text);
}

.theme-option-desc {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.theme-option-check {
  font-size: 14px;
  color: var(--accent);
  font-weight: 700;
  opacity: 0;
  flex: 0 0 auto;
}

.theme-option.active .theme-option-check { opacity: 1; }

/* Swatch im Picker-Btn passt sich pro Theme an */
.theme-light    .theme-picker-swatch { background: linear-gradient(135deg, #ec4899 0%, #a855f7 50%, #6366f1 100%); }
.theme-sunset   .theme-picker-swatch { background: linear-gradient(135deg, #f43f5e 0%, #f97316 50%, #fbbf24 100%); }
.theme-forest   .theme-picker-swatch { background: linear-gradient(135deg, #84cc16 0%, #10b981 50%, #14b8a6 100%); }
.theme-cyberpunk .theme-picker-swatch { background: linear-gradient(135deg, #f0abfc 0%, #d946ef 50%, #06b6d4 100%); }

/* ── APP SHELL (Navbar + Sidebar + Main) ── */
.app-shell {
  display: grid;
  grid-template-columns: 220px 1fr;
  margin-top: var(--nav-h);
  min-height: calc(100vh - var(--nav-h));
}

.app-sidebar {
  background:
    radial-gradient(ellipse 80% 40% at 50% 0%, var(--glow-pink) 0%, transparent 70%),
    radial-gradient(ellipse 90% 50% at 50% 100%, var(--glow-violet) 0%, transparent 70%),
    var(--bg);
  border-right: 1px solid var(--border);
  padding: 16px 12px;
  position: sticky;
  top: var(--nav-h);
  height: calc(100vh - var(--nav-h));
  overflow-y: auto;
}

/* Glow-Streifen an der rechten Sidebar-Kante */
.app-sidebar::after {
  content: '';
  position: absolute;
  right: -1px;
  top: 10%;
  bottom: 10%;
  width: 1px;
  background: linear-gradient(180deg,
    transparent 0%,
    var(--glow-pink) 25%,
    var(--glow-violet) 50%,
    var(--glow-indigo) 75%,
    transparent 100%
  );
  filter: blur(2px);
  pointer-events: none;
  opacity: 0.85;
}

.side-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  height: 100%;
  min-height: 100%;
}

.side-nav-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-align: left;
  font-size: 14.5px;
  font-weight: 500;
  letter-spacing: -0.005em;
  color: var(--text-muted);
  transition: background 0.13s ease, color 0.13s ease;
  width: 100%;
  position: relative;
}

.side-nav-btn:hover { background: var(--surface2); color: var(--text); }

.side-nav-btn.active {
  background: var(--surface2);
  color: var(--text);
}

.side-nav-btn.active::before {
  content: '';
  position: absolute;
  left: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 22px;
  background: var(--accent-gradient);
  border-radius: 0 3px 3px 0;
  box-shadow: 0 0 14px var(--glow-violet);
}

.side-nav-icon {
  font-size: 15px;
  flex-shrink: 0;
  opacity: 0.85;
  width: 20px;
  height: 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  line-height: 1;
}
.side-nav-btn.active .side-nav-icon { opacity: 1; }
.side-nav-label { flex: 1; }

.side-nav-divider {
  height: 1px;
  background: var(--border);
  margin: 12px 4px 8px;
  margin-top: auto;
}

.side-nav-logout {
  color: var(--text-muted);
}

.side-nav-logout:hover {
  background: var(--oft-bg) !important;
  color: var(--oft-text) !important;
}

.side-nav-logout .side-nav-icon {
  font-weight: 700;
}

.app-main {
  min-width: 0;
  overflow-x: hidden;
  position: relative;
  background:
    radial-gradient(ellipse 50% 40% at 100% 0%, var(--glow-violet) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 0% 100%, var(--glow-pink) 0%, transparent 60%),
    radial-gradient(ellipse 60% 40% at 50% 50%, var(--glow-indigo) 0%, transparent 70%);
  background-attachment: fixed;
}

/* ── PAGES ── */
.page {
  min-height: calc(100vh - var(--nav-h));
}

.hidden { display: none !important; }

/* ── HOME PAGE ── */
#page-home {
  display: flex;
}

/* ── KARTEN PAGE ── */
.karten-page { padding: 28px 36px; max-width: 1100px; margin: 0 auto; }

.karten-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  gap: 20px;
  flex-wrap: wrap;
}

.karten-header-left { display: flex; align-items: center; gap: 8px; }

.karten-header-left h2 {
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.3px;
  background: linear-gradient(180deg, #ffffff 0%, #d8c2ff 90%, var(--text-muted) 200%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.karten-header-right { display: flex; align-items: center; gap: 10px; }

.count-badge {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 4px 11px;
  border-radius: 20px;
}

/* BUTTONS — Linear/Vercel-style: precise borders, subtle hover states */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 500;
  font-family: var(--font-sans);
  letter-spacing: -0.005em;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.14s ease, border-color 0.14s ease, color 0.14s ease, transform 0.08s ease;
  white-space: nowrap;
  user-select: none;
}

.btn:active { transform: scale(0.98); }

.btn-primary {
  background: var(--accent-gradient);
  background-size: 150% 150%;
  background-position: 0% 50%;
  color: #fff;
  border-color: transparent;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.18),
    0 1px 2px rgba(0,0,0,0.4),
    0 0 0 1px rgba(168,85,247,0.18),
    0 4px 18px -2px rgba(168,85,247,0.35);
  transition: background-position 0.4s ease, box-shadow 0.18s ease, transform 0.08s ease;
}

.btn-primary:hover {
  background-position: 100% 50%;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.22),
    0 1px 2px rgba(0,0,0,0.4),
    0 0 0 1px rgba(236,72,153,0.25),
    0 6px 22px -2px rgba(236,72,153,0.45);
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border2);
}

.btn-secondary:hover {
  background: var(--surface2);
  border-color: var(--text-dim);
}

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border-color: transparent;
}

.btn-ghost:hover {
  background: var(--surface2);
  color: var(--text);
}

/* CARD GROUPS – accordion */
.card-group {
  margin-bottom: 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.card-group-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 13px 18px;
  background: var(--surface);
  cursor: pointer;
  user-select: none;
  transition: background 0.12s;
}

.card-group-header:hover { background: var(--surface2); }

.card-group-arrow {
  font-size: 11px;
  color: var(--text-dim);
  transition: transform 0.2s;
}
.card-group-arrow.open { transform: rotate(90deg); }

.card-group-title {
  font-size: 14px;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
}

.card-group-count {
  font-size: 12px;
  color: var(--text-muted);
  background: var(--surface2);
  border: 1px solid var(--border);
  padding: 2px 9px;
  border-radius: 20px;
}

.card-group-body {
  display: none;
  border-top: 1px solid var(--border);
  background: var(--bg);
  padding: 16px;
}

.card-group-body.open { display: block; }

/* Drag & Drop states */
.flash-card[draggable="true"] { cursor: grab; }
.flash-card[draggable="true"]:active { cursor: grabbing; }
.flash-card.dragging { opacity: 0.3; pointer-events: none; }

/* CARD GRID */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 14px;
}

.no-cards {
  background: var(--surface);
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  text-align: center;
  padding: 56px 40px;
  color: var(--text-muted);
  font-size: 15px;
}

.flash-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  cursor: default;
  min-height: 150px;
  position: relative;
  perspective: 1000px;
  transition: box-shadow 0.18s ease, transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.flash-card:hover {
  border-color: var(--border2);
  background: var(--surface2);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm), 0 6px 14px rgba(0,0,0,0.25);
}

/* Karten mit Actions-Bar: Flex-Column, Inhalt + Footer */
.flash-card.has-actions {
  display: flex;
  flex-direction: column;
  cursor: pointer;
  min-height: 200px;
}

.flash-card.has-actions .flash-card-inner {
  flex: 1 1 auto;
  min-height: 140px;
}

.flash-card-inner {
  transform-style: preserve-3d;
  transition: transform 0.5s cubic-bezier(0.4,0,0.2,1);
  width: 100%; height: 100%; min-height: 150px;
  position: relative;
}

.flash-card.flipped .flash-card-inner { transform: rotateY(180deg); }

.flash-card-front, .flash-card-back {
  backface-visibility: hidden;
  position: absolute;
  inset: 0;
  padding: 18px;
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.flash-card-back {
  background: var(--accent-gradient);
  transform: rotateY(180deg);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.15);
}

.card-side-label {
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.flash-card-back .card-side-label { color: rgba(255,255,255,0.5); }

.card-text {
  font-size: 12px;
  line-height: 1.5;
  color: var(--text);
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 7;
  -webkit-box-orient: vertical;
}
.flash-card-back .card-text { color: #fff; }

/* Wenn Markdown drin ist, das Line-Clamp aufgeben (img + multiple <p>) */
.card-text.md-content {
  display: block;
  -webkit-line-clamp: unset;
  -webkit-box-orient: unset;
  max-height: 100%;
}

.flash-card .card-text.md-content {
  font-size: 12px;
}

/* Repeat mode badge on card */
.card-mode-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 10px;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 10px;
  margin-bottom: 8px;
  align-self: flex-start;
  border: 1px solid;
}

.badge-mc       { background: #1a2a4a;              color: #60a5fa;             border-color: #2a4070; }
.badge-cloze    { background: var(--accent-soft);   color: var(--accent);       border-color: var(--accent-glow); }
/* ── Sequence im Card-Editor (Bausteine anlegen/bearbeiten) ── */
.seq-editor-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 10px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  min-height: 50px;
}

.seq-editor-empty {
  padding: 8px;
  font-size: 12px;
  font-style: italic;
  color: var(--text-dim);
  text-align: center;
}

.seq-editor-row {
  display: flex;
  align-items: center;
  gap: 6px;
}

.seq-editor-num {
  width: 22px;
  text-align: right;
  font-size: 12px;
  font-weight: 700;
  color: var(--text-dim);
  flex: 0 0 auto;
}

.seq-editor-input {
  flex: 1;
  padding: 6px 10px;
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13px;
}

.seq-editor-input:focus {
  outline: none;
  border-color: var(--accent);
}

.seq-editor-up,
.seq-editor-down,
.seq-editor-del {
  width: 28px;
  height: 28px;
  border: 1px solid var(--border2);
  background: var(--surface);
  color: var(--text-muted);
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background 0.13s, color 0.13s, border-color 0.13s;
}

.seq-editor-up:hover:not(:disabled),
.seq-editor-down:hover:not(:disabled) {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}

.seq-editor-del:hover {
  background: rgba(249, 117, 112, 0.15);
  border-color: var(--danger);
  color: var(--danger);
}

.seq-editor-up:disabled,
.seq-editor-down:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.seq-editor-add-row {
  display: flex;
  gap: 6px;
  margin-top: 8px;
}

.seq-editor-add-row input {
  flex: 1;
  padding: 8px 12px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13px;
}

.seq-editor-add-row input:focus {
  outline: none;
  border-color: var(--accent);
}

/* ── Tipp-Modus: Eingabefeld im Study-Mode ── */
.typing-field {
  width: 100%;
  max-width: 580px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.typing-field.hidden { display: none; }

/* Container für 1 oder mehrere Eingabefelder (Cloze: 1 Input pro Lücke) */
.typing-inputs {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.typing-input {
  width: 100%;
  padding: 14px 18px;
  font-size: 17px;
  font-family: inherit;
  background: var(--surface);
  border: 1.5px solid var(--border2);
  border-radius: var(--radius);
  color: var(--text);
  outline: none;
  transition: border-color 0.13s, box-shadow 0.13s, background 0.13s;
}

.typing-input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.typing-input:disabled {
  opacity: 0.85;
  cursor: not-allowed;
}

/* Status-Färbung pro Input bei Cloze-Multi-Vergleich */
.typing-input.typing-input-ok {
  border-color: var(--selten-border);
  background: color-mix(in srgb, var(--selten-bg) 40%, var(--surface));
}

.typing-input.typing-input-close {
  border-color: var(--manchmal-border);
  background: color-mix(in srgb, var(--manchmal-bg) 40%, var(--surface));
}

.typing-input.typing-input-wrong {
  border-color: var(--oft-border);
  background: color-mix(in srgb, var(--oft-bg) 40%, var(--surface));
}

.typing-feedback {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  text-align: center;
  border: 1px solid;
}

.typing-feedback.hidden { display: none; }

.typing-feedback.typing-ok {
  background: var(--selten-bg);
  color: var(--selten-text);
  border-color: var(--selten-border);
}

.typing-feedback.typing-close {
  background: var(--manchmal-bg);
  color: var(--manchmal-text);
  border-color: var(--manchmal-border);
}

.typing-feedback.typing-wrong {
  background: var(--oft-bg);
  color: var(--oft-text);
  border-color: var(--oft-border);
}

.typing-feedback.typing-empty {
  background: var(--surface2);
  color: var(--text-muted);
  border-color: var(--border);
}

/* ── Solution-Steps (Schrittweises Aufdecken des Lösungswegs) ── */
.solution-toggle-btn {
  margin: 8px auto;
  display: block;
  align-self: center;
}

.solution-steps {
  width: 100%;
  max-width: 680px;
  margin: 0 auto;
  padding: 18px 22px;
  background: var(--surface);
  border: 1px solid var(--accent-glow);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.solution-steps.hidden { display: none; }

.solution-steps-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.solution-steps-title {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
}

.solution-steps-progress {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 600;
}

.solution-steps-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.solution-step {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 14px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  animation: slide-in 0.3s ease;
}

.solution-step.latest {
  border-color: var(--accent);
  background: var(--accent-soft);
  box-shadow: 0 0 0 1px var(--accent-glow);
}

@keyframes slide-in {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.solution-step-num {
  flex: 0 0 auto;
  width: 24px;
  height: 24px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
}

.solution-step-text {
  flex: 1;
  font-size: 14px;
  line-height: 1.5;
  color: var(--text);
}

.solution-step-text p { margin: 0; }

.solution-steps-actions {
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.solution-steps-actions .btn { min-width: 130px; }

/* Tap-to-Zoom: antippbare Schritt-Zeilen */
.solution-step-zoomable {
  cursor: pointer;
  position: relative;
  transition: border-color 0.15s, background 0.15s;
}

.solution-step-zoomable:hover,
.solution-step-zoomable:focus-visible {
  border-color: var(--accent);
  background: var(--accent-soft);
  outline: none;
}

.solution-step-zoom-icon {
  flex: 0 0 auto;
  font-size: 13px;
  color: var(--text-muted);
  opacity: 0.45;
  margin-left: 4px;
  align-self: center;
  pointer-events: none;
  transition: opacity 0.15s;
  user-select: none;
}

.solution-step-zoomable:hover .solution-step-zoom-icon,
.solution-step-zoomable:focus-visible .solution-step-zoom-icon {
  opacity: 0.9;
}

/* Zoom-Modal: grosse Darstellung eines einzelnen Loeungsweg-Schritts */
/* .modal-box.step-zoom-box: hoehere Spezifitaet, damit die breite Box die spaeter
   in der Datei definierte .modal-box (width:500px) zuverlaessig ueberschreibt. */
.modal-box.step-zoom-box {
  width: min(1100px, 94vw);
  max-width: 94vw;
  max-height: 88vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.step-zoom-heading {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 600;
}

.step-zoom-num {
  flex: 0 0 auto;
  width: 28px;
  height: 28px;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  font-weight: 700;
}

.step-zoom-content {
  font-size: clamp(1.6rem, 3.2vw, 2.4rem);
  line-height: 1.55;
  color: var(--text);
  padding: 8px 0;
  /* Gross und VOLLSTAENDIG sichtbar: lange Zeilen brechen um (kein Slider, kein
     Abschneiden); explizite <br> brechen ohnehin. KaTeX-Brueche skalieren per em mit. */
  white-space: normal;
  overflow-wrap: break-word;
}

/* KaTeX-Elemente skalieren mit der Basis-Fontsize mit */
.step-zoom-content .katex {
  font-size: 1em;
}

/* Mobile: volle Breite, angepasste Schriftgroesse */
@media (max-width: 600px) {
  .modal-box.step-zoom-box {
    width: 96vw;
    max-width: 96vw;
    padding: 18px 16px;
    max-height: 92vh;
  }
}

/* PDF-Error-Box im Preview (wenn PDF abgelaufen / gelöscht) */
.preview-pdf-error {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px 28px;
  text-align: center;
  background: var(--surface);
  color: var(--text);
  gap: 8px;
}

.preview-pdf-error.hidden { display: none; }

.preview-pdf-error-icon {
  font-size: 42px;
  margin-bottom: 8px;
  opacity: 0.55;
}

.preview-pdf-error h3 {
  font-size: 16px;
  margin-bottom: 4px;
}

.preview-pdf-error p {
  font-size: 13px;
  color: var(--text-muted);
  max-width: 360px;
  line-height: 1.5;
}

.preview-pdf-error-hint {
  font-size: 12px !important;
  color: var(--text-dim) !important;
  margin-top: 10px;
  font-style: italic;
}

/* ── Karten-Tönung nach Repeat-Modus (Karten-Übersicht) ── */
.flash-card.mode-oft {
  background: var(--oft-bg);
  border-color: var(--oft-border);
}
.flash-card.mode-manchmal {
  background: var(--manchmal-bg);
  border-color: var(--manchmal-border);
}
.flash-card.mode-selten {
  background: var(--selten-bg);
  border-color: var(--selten-border);
}

.flash-card.mode-oft:hover      { border-color: var(--oft-text); }
.flash-card.mode-manchmal:hover { border-color: var(--manchmal-text); }
.flash-card.mode-selten:hover   { border-color: var(--selten-text); }

/* Rating-basierte Tönung (4 Stufen — feinere Granularität als mode-*) */
.flash-card.rating-1 {  /* Nicht gewusst — dunkler rot */
  background: rgba(220, 60, 50, 0.12);
  border-color: rgba(220, 60, 50, 0.35);
}
.flash-card.rating-2 {  /* Schwer */
  background: var(--oft-bg);
  border-color: var(--oft-border);
}
.flash-card.rating-3 {  /* Gut */
  background: var(--manchmal-bg);
  border-color: var(--manchmal-border);
}
.flash-card.rating-4 {  /* Einfach */
  background: var(--selten-bg);
  border-color: var(--selten-border);
}
.flash-card.rating-1:hover { border-color: var(--danger); }
.flash-card.rating-2:hover { border-color: var(--oft-text); }
.flash-card.rating-3:hover { border-color: var(--manchmal-text); }
.flash-card.rating-4:hover { border-color: var(--selten-text); }

/* ── Action-Bar unten in jeder Karte (Lupe + Rating-Buttons) ── */
.card-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-top: 1px solid var(--border);
  background: rgba(0,0,0,0.06);
  border-bottom-left-radius: var(--radius);
  border-bottom-right-radius: var(--radius);
}

.card-zoom-btn {
  flex: 0 0 auto;
  width: 30px;
  height: 30px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border2);
  background: var(--surface);
  color: var(--text-muted);
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.13s, color 0.13s, border-color 0.13s, transform 0.08s;
  padding: 0;
}

.card-zoom-btn:hover {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-1px);
}

.card-rating-bar {
  display: flex;
  flex: 1 1 auto;
  gap: 6px;
}

.card-rating-btn {
  flex: 1;
  padding: 6px 4px;
  border: 1px solid var(--border2);
  background: var(--surface);
  color: var(--text-muted);
  border-radius: 6px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  transition: background 0.13s, color 0.13s, border-color 0.13s, transform 0.08s;
}
.card-rating-btn:hover { transform: translateY(-1px); }

/* 4 Rating-Buttons (analog zum Lernmodus): Nicht gewusst / Schwer / Gut / Einfach */
.card-rating-btn.rb-again:hover { color: var(--danger);        border-color: var(--danger); }
.card-rating-btn.rb-hard:hover  { color: var(--oft-text);      border-color: var(--oft-text); }
.card-rating-btn.rb-good:hover  { color: var(--manchmal-text); border-color: var(--manchmal-text); }
.card-rating-btn.rb-easy:hover  { color: var(--selten-text);   border-color: var(--selten-text); }

.card-rating-btn.rb-again.active {
  background: var(--danger); color: #fff; border-color: var(--danger);
}
.card-rating-btn.rb-hard.active {
  background: var(--oft-text); color: #fff; border-color: var(--oft-text);
}
.card-rating-btn.rb-good.active {
  background: var(--manchmal-text); color: #fff; border-color: var(--manchmal-text);
}
.card-rating-btn.rb-easy.active {
  background: var(--selten-text); color: #fff; border-color: var(--selten-text);
}

/* Buttons kleiner Font weil 4 statt 3 in den engeren Karten */
.card-rating-btn { font-size: 10px; padding: 5px 2px; }

/* ── Topic-Card-Grid: nutzt das vorhandene .card-grid mit etwas mehr Min-Breite ── */
.topic-card-grid {
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
}

.card-delete {
  position: absolute;
  top: 6px; right: 6px;
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(20, 22, 35, 0.55);
  border: 1px solid var(--border2);
  color: var(--text-muted);
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  opacity: 0.55;
  border-radius: 6px;
  padding: 0;
  transition: opacity 0.12s, color 0.12s, background 0.12s, border-color 0.12s, transform 0.08s;
  z-index: 10;
  line-height: 1;
  backdrop-filter: blur(4px);
}

.flash-card:hover .card-delete { opacity: 1; }

.card-delete:hover {
  background: var(--danger);
  border-color: var(--danger);
  color: #fff;
  transform: scale(1.08);
}

/* Im Light-Theme dunklerer Hintergrund auf hellem Bg */
.theme-light .card-delete {
  background: rgba(255,255,255,0.85);
  color: var(--text-muted);
}

/* Countdown-Badge auf Friedhof-Karten (zeigt "in X h" bis zum endgültigen Delete) */
.card-graveyard-countdown {
  position: absolute;
  top: 8px;
  left: 8px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 3px 9px;
  background: rgba(20, 22, 35, 0.75);
  border: 1px solid var(--nie-border);
  color: var(--nie-text);
  border-radius: 100px;
  z-index: 10;
  user-select: none;
}

.theme-light .card-graveyard-countdown {
  background: rgba(255,255,255,0.85);
}

/* Graveyard toggle button */
.graveyard-toggle-btn { border: 1px solid var(--border); opacity: 0.7; font-size: 13px; }
.graveyard-toggle-btn:hover { opacity: 1; border-color: var(--border2); }
.graveyard-toggle-btn.active { opacity: 1; border-color: var(--accent); color: var(--accent); }

/* Graveyard card selection checkbox */
.card-select-chk {
  position: absolute;
  top: 8px;
  left: 8px;
  width: 16px;
  height: 16px;
  border-radius: 4px;
  border: 2px solid var(--border2);
  background: var(--surface2);
  z-index: 10;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  transition: border-color 0.12s, background 0.12s;
}

.card-select-chk:hover { border-color: var(--accent); }
.card-select-chk.checked { background: var(--accent); border-color: var(--accent); color: #fff; }
.card-select-chk.checked::after { content: '✓'; }

.flash-card.selected-for-restore {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-glow);
}

/* ── KARTENFRIEDHOF ── */
.graveyard-section {
  margin-top: 48px;
  border-top: 2px dashed var(--border);
  padding-top: 28px;
}

.graveyard-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 10px;
}

.graveyard-section-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.graveyard-icon { font-size: 22px; }

.graveyard-section-header h3 {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-muted);
}

.graveyard-hint {
  font-size: 13px;
  color: var(--text-dim);
  font-style: italic;
}

.graveyard-group {
  margin-bottom: 8px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.graveyard-group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 13px 18px;
  background: var(--surface);
  cursor: pointer;
  user-select: none;
  transition: background 0.12s;
}

.graveyard-group-header:hover { background: var(--surface2); }

.graveyard-group-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.graveyard-group-arrow {
  font-size: 11px;
  color: var(--text-dim);
  transition: transform 0.2s;
}

.graveyard-group-arrow.open { transform: rotate(90deg); }

.graveyard-group-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--text-muted);
}

.graveyard-group-body {
  display: none;
  padding: 16px;
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.graveyard-empty {
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 24px 20px;
  text-align: center;
  color: var(--text-dim);
  font-size: 13px;
  line-height: 1.6;
}

.graveyard-group-body.open { display: block; }

/* ── STUDY MODE ── */
.study-mode {
  padding: 28px 36px;
  max-width: 1100px;
  margin: 0 auto;
  min-height: calc(100vh - var(--nav-h));
  display: flex;
  flex-direction: column;
}

#studyActive { display: flex; flex-direction: column; flex: 1; }

.study-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 36px;
}

.study-meta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.study-topic-label { font-size: 12px; color: var(--text-muted); font-weight: 600; }
.study-progress { font-size: 22px; font-weight: 800; letter-spacing: -0.5px; }

.study-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 28px;
}

/* Standard flip card */
.study-card {
  width: 100%;
  max-width: 580px;
  height: 300px;
  cursor: pointer;
  perspective: 1000px;
}

.study-card-inner {
  width: 100%; height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.55s cubic-bezier(0.4,0,0.2,1);
  position: relative;
}

.study-card.flipped .study-card-inner { transform: rotateY(180deg); }

.study-card-front, .study-card-back {
  position: absolute;
  inset: 0;
  backface-visibility: hidden;
  border-radius: 18px;
  padding: 36px;
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-y: auto;
  overflow-x: hidden;
  justify-content: center;
  text-align: center;
}

.study-card-front {
  background: var(--surface);
  border: 1px solid var(--border2);
  box-shadow: var(--shadow);
}

.study-card-back {
  background: var(--accent-gradient);
  box-shadow:
    var(--shadow),
    0 0 0 1px rgba(255,255,255,0.06),
    0 8px 36px var(--glow-violet),
    0 16px 60px var(--glow-pink);
  transform: rotateY(180deg);
}

.card-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--text-dim);
  margin-bottom: 16px;
}

.study-card-back .card-label { color: rgba(255,255,255,0.55); }

.study-card-front .study-card-text,
.study-card-front .study-card-text p { font-size: 19px; font-weight: 500; line-height: 1.6; max-width: 100%; word-break: break-word; }
.study-card-back .study-card-text,
.study-card-back .study-card-text p  { font-size: 17px; font-weight: 500; line-height: 1.55; color: #fff; max-width: 100%; word-break: break-word; }

/* Code-Blocks in Study-Karten: kleinere Schrift, scrollbar bei sehr langem Code */
.study-card-text .md-code-block,
.study-card-text pre {
  font-size: 12px;
  line-height: 1.45;
  max-width: 100%;
  overflow-x: auto;
  white-space: pre;
}
.study-card-text .md-code-inline,
.study-card-text code { font-size: 13px; }
.mc-question-area .study-card-text,
.mc-question-area .study-card-text p { font-size: 18px; font-weight: 500; line-height: 1.55; }

.flip-hint {
  margin-top: 20px;
  font-size: 12px;
  color: var(--text-dim);
}

/* MC card in study mode */
.study-card-mc {
  width: 100%;
  max-width: 580px;
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: 18px;
  padding: 32px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
}

.mc-question-area {
  text-align: center;
  margin-bottom: 24px;
}

.mc-question-area .card-label { margin-bottom: 12px; }

.mc-question-area .study-card-text,
.mc-question-area .study-card-text p {
  font-size: 18px;
  font-weight: 500;
  line-height: 1.6;
}

.mc-options {
  display: flex;
  flex-direction: column;
  gap: 9px;
  margin-bottom: 20px;
}

.mc-option {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  background: var(--surface2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: border-color 0.13s, background 0.13s;
  user-select: none;
}

.mc-option:hover:not(.correct):not(.wrong):not(.missed) {
  border-color: var(--accent);
  background: var(--accent-dim);
}

.mc-option.selected {
  border-color: var(--accent);
  background: var(--accent-dim);
}

.mc-option.correct {
  border-color: var(--selten-border);
  background: var(--selten-bg);
  cursor: default;
}

.mc-option.wrong {
  border-color: var(--oft-border);
  background: var(--oft-bg);
  cursor: default;
}

.mc-option.missed {
  border-color: var(--selten-border);
  background: var(--selten-bg);
  opacity: 0.65;
  cursor: default;
}

.mc-checkbox {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  border: 2px solid var(--border2);
  background: transparent;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  transition: all 0.12s;
}

.mc-option.selected .mc-checkbox { background: var(--accent); border-color: var(--accent); color: #fff; }
.mc-option.selected .mc-checkbox::after { content: '✓'; }
.mc-option.correct .mc-checkbox { background: var(--selten-text); border-color: var(--selten-text); color: #fff; }
.mc-option.correct .mc-checkbox::after { content: '✓'; }
.mc-option.wrong .mc-checkbox { background: var(--oft-text); border-color: var(--oft-text); color: #fff; }
.mc-option.wrong .mc-checkbox::after { content: '✗'; }
.mc-option.missed .mc-checkbox { border-color: var(--selten-border); }

.mc-option-text {
  font-size: 14px;
  line-height: 1.5;
  flex: 1;
}

.mc-option.correct .mc-option-text { color: var(--selten-text); }
.mc-option.wrong .mc-option-text { color: var(--oft-text); }

.mc-reveal-btn { display: block; margin: 0 auto; }

/* RATING BUTTONS */
.rating-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: center;
  max-width: 580px;
  width: 100%;
}

/* Skip-Button (immer sichtbar im Lern-Modus, dezent unter den Bewertungs-Buttons) */
.study-skip-btn {
  margin-top: 18px;
  padding: 8px 16px;
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.2px;
  color: var(--text-muted);
  opacity: 0.75;
  transition: opacity 0.15s, color 0.15s;
}

.study-skip-btn:hover {
  opacity: 1;
  color: var(--text);
}

.rating-btn {
  flex: 1;
  min-width: 120px;
  padding: 12px 10px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  border: 1.5px solid;
  transition: transform 0.1s, filter 0.13s;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.rating-btn:hover  { filter: brightness(1.2); }
.rating-btn:active { transform: scale(0.96); }

/* ── Cloze-Lücken ── */
.cloze-blank {
  display: inline-block;
  min-width: 48px;
  padding: 0 8px;
  margin: 0 2px;
  background: var(--accent-soft);
  border: 1px dashed var(--accent);
  border-radius: 6px;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-align: center;
  vertical-align: baseline;
}

/* Lücke MIT Hint: dezenter, kursiv, weniger "Lücken-Look" */
.cloze-blank.cloze-blank-hint {
  font-style: italic;
  font-weight: 500;
  letter-spacing: 0;
  opacity: 0.85;
}

.cloze-reveal {
  display: inline-block;
  padding: 0 6px;
  margin: 0 1px;
  background: var(--accent-soft);
  border-radius: 5px;
  color: var(--accent);
  font-weight: 700;
}

/* In der Antwort-Hälfte (Pink-Gradient-Background) der Study-Karte: helles Highlight */
.study-card-back .cloze-reveal {
  background: rgba(255,255,255,0.20);
  color: #fff;
  text-shadow: 0 0 8px rgba(255,255,255,0.45);
}

/* SM-2 Study-Mode-Buttons */
.r-again { background: var(--oft-bg);      color: var(--oft-text);      border-color: var(--oft-border); }
.r-hard  { background: var(--manchmal-bg); color: var(--manchmal-text); border-color: var(--manchmal-border); }
.r-good  { background: var(--selten-bg);   color: var(--selten-text);   border-color: var(--selten-border); }
.r-easy  { background: rgba(56, 132, 255, 0.10); color: #6ea1ff; border-color: rgba(56, 132, 255, 0.30); }
.r-bury  {
  flex: 0 0 auto;
  min-width: 56px;
  background: var(--nie-bg);
  color: var(--nie-text);
  border-color: var(--nie-border);
  font-size: 16px;
}

/* Admin-only: "Schlecht generiert"-Button (dezent, gedämpfte Bernsteinfarbe) */
.r-flag {
  flex: 0 0 auto;
  min-width: 56px;
  background: rgba(245, 158, 11, 0.10);
  color: #f59e0b;
  border-color: rgba(245, 158, 11, 0.30);
  font-size: 16px;
}

/* Admin-only Sichtbarkeit (Server prüft ohnehin per require_admin — das ist nur UX) */
.admin-only { display: none !important; }
body.is-admin .admin-only { display: inline-flex !important; }

/* Karten-Vorschau im Feedback-Modal */
.card-feedback-preview {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  margin: 8px 0 12px;
  font-size: 13px;
  max-height: 160px;
  overflow-y: auto;
}
.card-feedback-preview .cfp-label { color: var(--text-soft); font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px; }
.card-feedback-preview .cfp-q { font-weight: 600; margin: 2px 0 8px; }
.card-feedback-preview .cfp-a { color: var(--text-soft); }

/* STUDY COMPLETE */
.study-complete {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  text-align: center;
}

.complete-icon { font-size: 56px; }

.study-complete h2 {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.study-complete p { color: var(--text-muted); font-size: 15px; }

/* ── MODAL ── */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 300;
  backdrop-filter: blur(4px);
}

.modal-box {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius-lg);
  padding: 24px 26px;
  width: 500px;
  max-width: 92vw;
  box-shadow:
    0 0 60px -10px var(--glow-violet),
    0 0 120px -20px var(--glow-pink),
    var(--shadow-lg);
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
}

.modal-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 4px;
}

.modal-head h3 {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.modal-close {
  background: none;
  border: none;
  font-size: 22px;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 5px;
  transition: background 0.12s;
  line-height: 1;
}

.modal-close:hover { background: var(--surface3); color: var(--text); }

.modal-box label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  color: var(--text-muted);
}

.modal-box textarea {
  width: 100%;
  padding: 10px 12px;
  background: var(--surface2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-family: inherit;
  color: var(--text);
  resize: vertical;
  outline: none;
  transition: border-color 0.15s;
}

.modal-box textarea:focus { border-color: var(--accent); }

.modal-select {
  width: 100%;
  padding: 10px 12px;
  background: var(--surface2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  cursor: pointer;
  transition: border-color 0.15s;
}

.modal-select:focus { border-color: var(--accent); }
.modal-select option { background: var(--surface2); }

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 6px;
}

/* ── SOURCES (Quellen) PAGE ── */
.source-add-btn {
  width: 100%;
  margin-bottom: 10px;
  font-size: 13px;
}

.source-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow-y: auto;
  flex: 1;
}

.source-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.12s;
}

.source-item:hover { background: var(--surface2); }
.source-item.active { background: var(--accent-dim); }

.source-item-icon { font-size: 16px; flex-shrink: 0; }

.source-item-name {
  flex: 1;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.source-item.active .source-item-name { color: var(--accent); }
.source-item:hover .source-item-name { color: var(--text); }

/* Empty state */
.source-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 400px;
  gap: 16px;
  text-align: center;
  color: var(--text-muted);
  padding: 40px;
}

.source-empty-icon { font-size: 52px; }
.source-empty h3 { font-size: 20px; font-weight: 700; color: var(--text); }
.source-empty p { font-size: 14px; line-height: 1.7; max-width: 420px; }

/* Source detail */
.source-detail { padding: 32px 40px; }

.source-detail-header {
  margin-bottom: 28px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border);
}

.source-title-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.source-type-icon { font-size: 28px; }
.source-title-row h2 { font-size: 24px; font-weight: 800; letter-spacing: -0.5px; flex: 1; }

.source-delete-btn { color: var(--text-dim); font-size: 13px; }
.source-delete-btn:hover { color: var(--danger); }

.source-meta { font-size: 13px; color: var(--text-muted); }

/* Generate box */
.source-generate-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  margin-bottom: 24px;
}

.source-generate-box h3 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 18px;
  color: var(--text);
}

.generate-controls {
  display: flex;
  align-items: flex-end;
  gap: 12px;
  flex-wrap: wrap;
}

.generate-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.generate-field label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  color: var(--text-muted);
}

.generate-field select,
.generate-field input {
  min-width: 200px;
  padding: 9px 12px;
  background: var(--surface2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s;
}

.generate-depth-field { flex: 1; min-width: 360px; }

.depth-selector {
  display: flex;
  gap: 6px;
  background: var(--surface2);
  border: 1.5px solid var(--border);
  padding: 4px;
  border-radius: var(--radius-sm);
}

.depth-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 8px 12px;
  background: transparent;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.13s, color 0.13s;
  color: var(--text-muted);
}

.depth-btn:hover { background: var(--surface3); color: var(--text); }

.depth-btn.active {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 8px var(--accent-glow);
}

.depth-name {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

.depth-desc {
  font-size: 10px;
  font-weight: 500;
  opacity: 0.85;
}

.depth-btn.active .depth-desc { opacity: 0.9; }

.generate-field select:focus,
.generate-field input:focus { border-color: var(--accent); }

.generate-btn { align-self: flex-end; }

.generate-status {
  margin-top: 14px;
  font-size: 13px;
  color: var(--text-muted);
  padding: 10px 14px;
  background: var(--surface2);
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

/* Source modal */
.source-modal-box {
  max-width: 560px;
  gap: 14px;
}

.source-tabs {
  display: flex;
  gap: 4px;
  background: var(--surface2);
  padding: 3px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

.source-tab {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 600;
  padding: 7px 10px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.13s, color 0.13s;
}

.source-tab:hover { color: var(--text); background: var(--surface3); }
.source-tab.active { background: var(--accent); color: #fff; }

.source-tab-panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.source-tab-panel label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  color: var(--text-muted);
}

.source-tab-panel input[type="text"],
.source-tab-panel input[type="url"] {
  width: 100%;
  padding: 10px 13px;
  background: var(--surface2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.15s;
}

.source-tab-panel input:focus { border-color: var(--accent); }

.source-tab-panel textarea {
  width: 100%;
  padding: 10px 13px;
  background: var(--surface2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  resize: vertical;
  outline: none;
  transition: border-color 0.15s;
}

.source-tab-panel textarea:focus { border-color: var(--accent); }

.source-hint {
  font-size: 12px;
  color: var(--text-dim);
  line-height: 1.5;
}

/* PDF drop zone */
.pdf-drop-zone {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 28px;
  border: 2px dashed var(--border2);
  border-radius: var(--radius);
  background: var(--surface2);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
  text-align: center;
}

.pdf-drop-zone:hover { border-color: var(--accent); background: var(--accent-dim); }
.pdf-drop-zone.has-file { border-color: var(--selten-border); background: var(--selten-bg); border-style: solid; }

.pdf-drop-icon { font-size: 26px; line-height: 1; }

.pdf-drop-zone span:not(.pdf-drop-icon) {
  font-size: 13px;
  color: var(--text-muted);
}

.pdf-drop-zone input[type="file"] {
  position: absolute;
  inset: 0;
  opacity: 0;
  cursor: pointer;
  width: 100%;
  height: 100%;
}

.copyright-notice {
  font-size: 11px;
  color: var(--text-dim);
  line-height: 1.55;
  padding: 9px 12px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-top: 4px;
}

/* ── PREVIEW OVERLAY (generierte Karten prüfen) ── */
.preview-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
  backdrop-filter: blur(6px);
  padding: 24px;
}

.preview-container {
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: 16px;
  width: 100%;
  max-width: 880px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
}

/* Wenn PDF-Pane aktiv → breiteres Modal + Split-View */
.preview-container:has(.preview-body.with-pdf) {
  max-width: 1400px;
}

.preview-body {
  flex: 1;
  display: flex;
  min-height: 0;
  overflow: hidden;
}

.preview-body.with-pdf > #previewCards {
  flex: 1 1 55%;
  border-right: 1px solid var(--border);
}

.preview-pdf-pane {
  flex: 1 1 45%;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  min-width: 0;
}

.preview-pdf-header {
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--surface);
}

.preview-pdf-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--text);
}

.preview-pdf-hint {
  font-size: 11px;
  color: var(--text-dim);
}

.preview-pdf-frame {
  flex: 1;
  border: none;
  background: #fff;
  min-height: 0;
}

/* Page-Badge auf Preview-Karte (klickbar → springt zur Seite) */
.preview-page-badge {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
  padding: 3px 9px;
  background: var(--accent-soft);
  border: 1px solid var(--accent-glow);
  color: var(--accent);
  border-radius: 100px;
  cursor: pointer;
  user-select: none;
  margin-left: 6px;
}

.preview-page-badge:hover {
  background: var(--accent-dim);
  color: var(--accent-hover);
}

/* Source-Badge auf Karte in der Übersicht */
.card-source-badge {
  position: absolute;
  bottom: 56px;
  left: 8px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 3px 9px;
  background: var(--accent-soft);
  border: 1px solid var(--accent-glow);
  color: var(--accent);
  border-radius: 100px;
  cursor: pointer;
  user-select: none;
  z-index: 10;
  font-family: inherit;
}

.card-source-badge:hover {
  background: var(--accent-dim);
  color: var(--accent-hover);
  transform: translateY(-1px);
  transition: transform 0.08s;
}

/* Source-Excerpt Modal */
.source-excerpt-modal {
  display: flex;
  align-items: center;
  justify-content: center;
}

.source-excerpt-box {
  max-width: 640px;
  width: 92vw;
}

.source-excerpt-hint {
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 12px;
  font-style: italic;
}

.source-excerpt-text {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 16px 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
  max-height: 60vh;
  overflow-y: auto;
  white-space: pre-wrap;
  /* Lese-Font statt Monospace — der Excerpt ist Fließtext aus PDF, kein Code */
  font-family: inherit;
}

.source-excerpt-text::-webkit-scrollbar { width: 8px; }
.source-excerpt-text::-webkit-scrollbar-thumb {
  background: var(--border2);
  border-radius: 4px;
}

.source-excerpt-empty {
  padding: 24px;
  text-align: center;
  color: var(--text-dim);
  font-style: italic;
}

.preview-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  padding: 22px 28px 18px;
  border-bottom: 1px solid var(--border);
  gap: 16px;
}

/* Hinweis-Banner: zeigt KI-Notes (z.B. übersprungene Aufgaben) zwischen Header und Karten-Liste */
.preview-notes {
  margin: 12px 28px 0;
  padding: 12px 14px;
  background: rgba(245, 158, 11, 0.10);
  border: 1px solid rgba(245, 158, 11, 0.30);
  border-radius: 8px;
  color: var(--text);
  font-size: 13.5px;
  line-height: 1.5;
}
.preview-note-line { display: block; }
.preview-note-line + .preview-note-line { margin-top: 6px; }

.preview-header-left { flex: 1; }

.preview-header h2 {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.4px;
  margin-bottom: 4px;
}

.preview-sub {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

.preview-close-x { font-size: 24px; }

.preview-cards {
  flex: 1;
  overflow-y: auto;
  padding: 20px 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.preview-cards::-webkit-scrollbar { width: 6px; }
.preview-cards::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }

.preview-card {
  background: var(--surface2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: border-color 0.15s, opacity 0.15s;
}

.preview-card.discarded {
  opacity: 0.45;
  border-color: var(--border);
  background: var(--bg);
}

.preview-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.preview-card-num {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
}

.preview-toggle-btn {
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid #2e3470;
  font-size: 12px;
  font-weight: 700;
  padding: 5px 12px;
  border-radius: 14px;
  cursor: pointer;
  transition: background 0.13s, border-color 0.13s;
}

.preview-toggle-btn:hover { background: var(--accent); color: #fff; }

.preview-toggle-btn.discarded {
  background: var(--oft-bg);
  color: var(--oft-text);
  border-color: var(--oft-border);
}

.preview-toggle-btn.discarded:hover { background: var(--oft-text); color: #fff; }

.preview-field { display: flex; flex-direction: column; gap: 5px; }

.preview-field label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
}

.preview-field textarea {
  width: 100%;
  padding: 9px 12px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  line-height: 1.55;
  resize: vertical;
  outline: none;
  transition: border-color 0.15s;
}

.preview-field textarea:focus { border-color: var(--accent); }

.preview-card.discarded .preview-field textarea {
  pointer-events: none;
}

.preview-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 28px;
  border-top: 1px solid var(--border);
  background: var(--surface2);
  gap: 14px;
}

.preview-kept {
  font-size: 13px;
  font-weight: 600;
  color: var(--accent);
}

.preview-footer-actions {
  display: flex;
  gap: 8px;
}

.preview-footer-actions button:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ── PREVIEW: Multiple Choice editing ── */
.preview-card.is-mc {
  border-left: 3px solid var(--selten-text);
}

.preview-type-badge {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  padding: 3px 9px;
  border-radius: 12px;
  border: 1px solid;
  margin-left: 8px;
}

.preview-type-badge.badge-mc {
  background: var(--selten-bg);
  color: var(--selten-text);
  border-color: var(--selten-border);
}

.preview-type-badge.badge-standard {
  background: var(--accent-dim);
  color: var(--accent);
  border-color: #2e3470;
}

.preview-type-badge.badge-cloze {
  background: var(--accent-soft);
  color: var(--accent);
  border-color: var(--accent-glow);
}

.preview-card-actions {
  display: flex;
  gap: 6px;
  align-items: center;
  margin-left: auto;
}

.preview-type-switch {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border2);
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 12px;
  cursor: pointer;
  transition: border-color 0.13s, color 0.13s;
}

.preview-type-switch:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ── Type-Picker (3 Pills: Standard / MC / Cloze) im Card-Editor ── */
.card-type-picker {
  display: inline-flex;
  gap: 2px;
  padding: 3px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 100px;
}

.type-pill {
  padding: 6px 14px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  font-family: inherit;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: 100px;
  transition: background 0.13s, color 0.13s, box-shadow 0.13s;
  white-space: nowrap;
}

.type-pill:hover:not(.active) {
  background: var(--surface3);
  color: var(--text);
}

.type-pill.active {
  background: var(--accent-gradient);
  color: #fff;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.08), 0 2px 8px var(--accent-glow);
}

.preview-mc-hint {
  font-weight: 500;
  text-transform: none;
  letter-spacing: 0.2px;
  color: var(--text-muted);
  font-size: 10px;
  margin-left: 4px;
}

.preview-mc-options {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.preview-mc-option {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 6px 8px 6px 6px;
  transition: border-color 0.13s, background 0.13s;
}

.preview-mc-option.is-correct {
  border-color: var(--selten-border);
  background: var(--selten-bg);
}

.preview-mc-toggle {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border-radius: 6px;
  border: 1.5px solid var(--border2);
  background: var(--surface2);
  color: transparent;
  font-weight: 800;
  font-size: 13px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.13s, border-color 0.13s, color 0.13s;
}

.preview-mc-option.is-correct .preview-mc-toggle {
  background: var(--selten-text);
  border-color: var(--selten-text);
  color: #0b1716;
}

.preview-mc-toggle:hover {
  border-color: var(--accent);
}

.preview-mc-text {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text);
  font-size: 13px;
  font-family: inherit;
  padding: 4px 6px;
  min-width: 0;
}

.preview-mc-text::placeholder {
  color: var(--text-dim);
}

.preview-mc-delete {
  flex-shrink: 0;
  background: transparent;
  border: none;
  color: var(--text-dim);
  font-size: 18px;
  font-weight: 600;
  width: 24px;
  height: 24px;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.13s, color 0.13s;
}

.preview-mc-delete:hover {
  background: var(--oft-bg);
  color: var(--oft-text);
}

.preview-mc-add {
  align-self: flex-start;
  background: transparent;
  border: 1px dashed var(--border2);
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 12px;
  cursor: pointer;
  margin-top: 4px;
  transition: border-color 0.13s, color 0.13s, background 0.13s;
}

.preview-mc-add:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

.preview-card.discarded .preview-mc-text,
.preview-card.discarded .preview-mc-toggle,
.preview-card.discarded .preview-mc-delete,
.preview-card.discarded .preview-mc-add,
.preview-card.discarded .preview-type-switch {
  pointer-events: none;
}

/* ── DASHBOARD PAGE ── */
.dashboard-layout {
  padding: 40px 48px;
  max-width: 1180px;
  margin: 0 auto;
}

.dashboard-hero {
  display: grid;
  grid-template-columns: 1.7fr 1fr;
  gap: 32px;
  background:
    radial-gradient(ellipse at top left, var(--glow-pink) 0%, transparent 55%),
    radial-gradient(ellipse at bottom right, var(--glow-violet) 0%, transparent 55%),
    var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  margin-bottom: 28px;
  position: relative;
  overflow: hidden;
}

.dashboard-hero::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(135deg,
    var(--glow-pink) 0%,
    transparent 30%,
    transparent 70%,
    var(--glow-violet) 100%
  );
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  pointer-events: none;
}

.dashboard-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--accent-soft);
  background-image: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  padding: 4px 11px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 18px;
  border: 1px solid var(--accent-glow);
  position: relative;
}

.dashboard-hero h1 {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.08;
  margin-bottom: 16px;
  background: linear-gradient(180deg, #ffffff 0%, #d8c2ff 90%, var(--text-muted) 180%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.dashboard-hero-main p {
  font-size: 14.5px;
  color: var(--text-muted);
  line-height: 1.65;
  margin-bottom: 26px;
  max-width: 540px;
}

.dashboard-hero-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.dashboard-hero-side {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.dashboard-tip {
  background: rgba(255,255,255,0.025);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 13px 15px;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  transition: border-color 0.13s, background 0.13s;
}

.dashboard-tip:hover {
  border-color: var(--border2);
  background: rgba(255,255,255,0.04);
}

.dashboard-tip-icon {
  font-size: 14px;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: 7px;
  flex-shrink: 0;
}

.dashboard-tip h4 {
  font-size: 12.5px;
  font-weight: 600;
  margin-bottom: 3px;
  letter-spacing: -0.01em;
}

.dashboard-tip p {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.55;
}

.dashboard-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1px;
  margin-bottom: 36px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.dashboard-stat {
  background: var(--surface);
  padding: 20px 24px;
  transition: background 0.13s;
}

.dashboard-stat:hover {
  background: var(--surface2);
}

.dashboard-stat-due {
  border-left: 3px solid var(--accent);
}

.dashboard-stat-due:hover {
  background: var(--surface2);
}

.dashboard-stat-label {
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.dashboard-stat-value {
  font-size: 30px;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--text);
  line-height: 1;
  margin-bottom: 4px;
  font-variant-numeric: tabular-nums;
}

.dashboard-stat-sub {
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: -0.005em;
}

.dashboard-section {
  margin-bottom: 32px;
}

.dashboard-section h2 {
  font-size: 18px;
  font-weight: 600;
  letter-spacing: -0.025em;
  margin-bottom: 4px;
}

.dashboard-section > p {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 20px;
}

.dashboard-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 14px;
}

.dashboard-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 22px 20px;
  cursor: pointer;
  transition: border-color 0.18s ease, background 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
  position: relative;
  overflow: hidden;
}

.dashboard-card::before {
  content: '';
  position: absolute;
  top: -40%;
  right: -40%;
  width: 70%;
  height: 70%;
  background: radial-gradient(circle, var(--glow-violet) 0%, transparent 65%);
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
  filter: blur(20px);
}

.dashboard-card:hover {
  border-color: var(--accent-glow);
  background: var(--surface2);
  transform: translateY(-2px);
  box-shadow: 0 0 0 1px var(--accent-glow), 0 12px 32px -4px rgba(168,85,247,0.18);
}

.dashboard-card:hover::before {
  opacity: 1;
}

.dashboard-card-tag {
  position: absolute;
  top: 14px;
  right: 14px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: #fff;
  background: var(--accent-gradient);
  padding: 3px 10px;
  border-radius: 100px;
  border: 1px solid rgba(255,255,255,0.1);
  box-shadow: 0 2px 12px var(--glow-violet);
  z-index: 1;
}

.dashboard-card-icon {
  font-size: 22px;
  margin-bottom: 14px;
  width: 38px;
  height: 38px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.dashboard-card:hover .dashboard-card-icon {
  background: var(--surface3);
  border-color: var(--border2);
}

.dashboard-card h3 {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
  letter-spacing: -0.018em;
}

.dashboard-card > p {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 14px;
  min-height: 60px;
}

.dashboard-card-cta {
  font-size: 12.5px;
  font-weight: 600;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: -0.005em;
  position: relative;
  z-index: 1;
}

@media (max-width: 800px) {
  .dashboard-hero { grid-template-columns: 1fr; }
  .dashboard-layout { padding: 20px; }
  .dashboard-hero h1 { font-size: 26px; }
}

/* ── FORTSCHRITT PAGE ── */
.fortschritt-layout {
  padding: 32px 40px;
  max-width: 1100px;
  margin: 0 auto;
}

/* Streak Hero */
.streak-hero {
  background: linear-gradient(135deg, #ff6b00 0%, #ff9100 100%);
  border-radius: 18px;
  padding: 26px 32px;
  display: flex;
  align-items: center;
  gap: 24px;
  margin-bottom: 16px;
  color: #fff;
  box-shadow: 0 12px 32px rgba(255, 107, 0, 0.25);
  position: relative;
  overflow: hidden;
}

.streak-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(255,255,255,0.15), transparent 70%);
  pointer-events: none;
}

.streak-hero.empty {
  background: linear-gradient(135deg, var(--surface) 0%, var(--surface2) 100%);
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: none;
}

.streak-hero.empty::before { display: none; }
.streak-hero.empty .streak-flame { filter: grayscale(1); opacity: 0.35; }

.streak-flame {
  font-size: 56px;
  line-height: 1;
  flex-shrink: 0;
}

.streak-info { flex: 1; }

.streak-number {
  font-size: 52px;
  font-weight: 800;
  letter-spacing: -2px;
  line-height: 1;
}

.streak-label {
  font-size: 14px;
  opacity: 0.9;
  margin-top: 4px;
  font-weight: 600;
}

.streak-meta {
  font-size: 13px;
  opacity: 0.92;
  text-align: right;
  max-width: 220px;
  line-height: 1.5;
  font-weight: 500;
}

/* Tagesziel */
.daily-goal-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 22px;
  margin-bottom: 18px;
  box-shadow: 0 0 30px -12px var(--glow-violet);
}

.daily-goal-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 10px;
}

.daily-goal-header h3 {
  font-size: 15px;
  font-weight: 700;
}

.daily-goal-header span {
  font-size: 14px;
  color: var(--text-muted);
  font-weight: 700;
}

.progress-bar {
  height: 10px;
  background: var(--surface2);
  border-radius: 6px;
  overflow: hidden;
  border: 1px solid var(--border);
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #a78bfa);
  transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  width: 0%;
  border-radius: 5px;
}

.progress-bar-fill.complete {
  background: linear-gradient(90deg, var(--selten-text), #34d399);
}

.daily-goal-sub {
  font-size: 12px;
  color: var(--text-muted);
  margin-top: 8px;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
  margin-bottom: 24px;
}

.stat-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 20px;
}

.stat-box-label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.7px;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.stat-box-value {
  font-size: 28px;
  font-weight: 800;
  color: var(--text);
  line-height: 1;
}

.stat-box-sub {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
}

/* Sektionen */
.fortschritt-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-bottom: 14px;
}

.fortschritt-section-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
  flex-wrap: wrap;
  gap: 12px;
}

.fortschritt-section h2 {
  font-size: 15px;
  font-weight: 700;
}

.fortschritt-section > h2:not(:last-of-type) { margin-bottom: 14px; }

/* Heatmap */
.heatmap {
  display: grid;
  grid-template-rows: repeat(7, 14px);
  grid-auto-flow: column;
  grid-auto-columns: 14px;
  gap: 3px;
  justify-content: start;
}

.heatmap-cell {
  width: 14px;
  height: 14px;
  border-radius: 3px;
  background: var(--surface2);
  border: 1px solid var(--border);
}

.heatmap-cell.h-0 { background: var(--surface2); }
.heatmap-cell.h-1 { background: rgba(129,140,248,0.25); border-color: rgba(129,140,248,0.4); }
.heatmap-cell.h-2 { background: rgba(129,140,248,0.5); border-color: rgba(129,140,248,0.6); }
.heatmap-cell.h-3 { background: rgba(129,140,248,0.75); border-color: rgba(129,140,248,0.85); }
.heatmap-cell.h-4 { background: var(--accent); border-color: var(--accent-hover); }

.heatmap-legend {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 11px;
  color: var(--text-muted);
}

.heatmap-legend .heatmap-cell {
  width: 11px;
  height: 11px;
}

/* Distribution */
.distribution {
  display: flex;
  height: 32px;
  border-radius: 8px;
  overflow: hidden;
  background: var(--surface2);
  border: 1px solid var(--border);
  margin-bottom: 12px;
}

.dist-segment {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  color: #fff;
  transition: flex 0.5s;
  min-width: 4px;
}

.dist-segment.dist-neu { background: var(--accent); }
.dist-segment.dist-oft { background: var(--oft-text); }
.dist-segment.dist-manchmal { background: var(--manchmal-text); color: #1a1300; }
.dist-segment.dist-selten { background: var(--selten-text); color: #04140d; }
.dist-segment.dist-nie { background: var(--nie-text); }

.distribution-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  font-size: 12px;
  color: var(--text-muted);
}

.dist-legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.dist-legend-dot {
  width: 11px;
  height: 11px;
  border-radius: 3px;
  flex-shrink: 0;
}

.dist-legend-dot.dist-neu { background: var(--accent); }
.dist-legend-dot.dist-oft { background: var(--oft-text); }
.dist-legend-dot.dist-manchmal { background: var(--manchmal-text); }
.dist-legend-dot.dist-selten { background: var(--selten-text); }
.dist-legend-dot.dist-nie { background: var(--nie-text); }

@media (max-width: 700px) {
  .fortschritt-layout { padding: 20px; }
  .streak-hero { flex-direction: column; align-items: flex-start; gap: 12px; }
  .streak-meta { text-align: left; }
}

/* ── UPLOADS PAGE LAYOUT ── */
.uploads-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: calc(100vh - var(--nav-h));
}

.uploads-sidebar {
  background: var(--surface);
  border-right: 1px solid var(--border);
  padding: 20px 14px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  overflow-y: auto;
  position: sticky;
  top: var(--nav-h);
  max-height: calc(100vh - var(--nav-h));
}

.uploads-content {
  padding: 0;
  min-width: 0;
}

.uploads-content .source-empty,
.uploads-content .source-detail {
  padding: 32px 40px;
}

/* ── COACH PAGE LAYOUT ── */
.coach-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(380px, 480px);
  gap: 16px;
  height: calc(100vh - var(--nav-h));
  max-width: 1500px;
  margin: 0 auto;
  padding: 0 24px;
}

.coach-main {
  display: flex;
  flex-direction: column;
  min-width: 0;
  border-right: 1px solid var(--border);
  padding-right: 20px;
}

@media (max-width: 1100px) {
  .coach-layout {
    grid-template-columns: 1fr;
  }
  .coach-main {
    border-right: none;
    padding-right: 0;
  }
  .coach-cards-pane {
    border-top: 1px solid var(--border);
    margin-top: 16px;
    padding-top: 16px;
  }
}

.coach-header {
  padding: 24px 0 14px;
  border-bottom: 1px solid var(--border);
  position: relative;
}

.coach-header h2 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 4px;
  background: linear-gradient(180deg, #ffffff 0%, #d8c2ff 90%, var(--text-muted) 200%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.coach-header p {
  font-size: 13px;
  color: var(--text-muted);
}

.coach-clear-btn {
  position: absolute;
  top: 24px;
  right: 0;
  font-size: 12px;
}

.coach-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px 4px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.coach-messages::-webkit-scrollbar { width: 6px; }
.coach-messages::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }

.coach-welcome {
  text-align: center;
  padding: 36px 20px;
  color: var(--text-muted);
}

.coach-welcome-icon { font-size: 44px; margin-bottom: 10px; }

.coach-welcome p { font-size: 14px; line-height: 1.6; }

.coach-welcome-hint {
  margin-top: 8px;
  font-size: 12.5px !important;
  color: var(--text-dim);
  font-style: italic;
}

.coach-msg {
  display: flex;
  gap: 10px;
  max-width: 85%;
}

.coach-msg.user { align-self: flex-end; flex-direction: row-reverse; }
.coach-msg.assistant { align-self: flex-start; }

.coach-msg-bubble {
  padding: 11px 15px;
  border-radius: 14px;
  font-size: 14px;
  line-height: 1.6;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.coach-msg.user .coach-msg-bubble {
  background: var(--accent-gradient);
  color: #fff;
  border-bottom-right-radius: 4px;
  box-shadow: 0 2px 14px var(--glow-violet);
}

.coach-msg.assistant .coach-msg-bubble {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-bottom-left-radius: 4px;
}

.coach-msg.assistant .coach-msg-bubble.thinking {
  font-style: italic;
  color: var(--text-muted);
}

.coach-input-bar {
  display: flex;
  gap: 8px;
  padding: 14px 0 20px;
  border-top: 1px solid var(--border);
  align-items: flex-end;
}

.coach-input-bar textarea {
  flex: 1;
  padding: 11px 14px;
  background: var(--surface2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  resize: none;
  outline: none;
  max-height: 140px;
  transition: border-color 0.15s;
}

.coach-input-bar textarea:focus { border-color: var(--accent); }

.coach-send-btn { align-self: stretch; padding: 0 24px; }

/* ── COACH CARDS PANE (rechts neben Chat) ── */
.coach-cards-pane {
  display: flex;
  flex-direction: column;
  height: calc(100vh - var(--nav-h));
  overflow: hidden;
  padding: 24px 0 20px;
}

.coach-cards-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 40px 30px;
  color: var(--text-muted);
  background: var(--surface);
  border: 1px dashed var(--border2);
  border-radius: var(--radius-lg);
  margin: 4px 0;
}

.coach-cards-empty-icon {
  font-size: 36px;
  margin-bottom: 14px;
  opacity: 0.7;
}

.coach-cards-empty h3 {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 8px;
}

.coach-cards-empty p {
  font-size: 13px;
  line-height: 1.5;
  margin-bottom: 8px;
}

.coach-cards-empty-hint {
  font-style: italic;
  color: var(--text-dim);
  font-size: 12px !important;
}

.coach-cards-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.coach-cards-head {
  padding: 16px 18px 12px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
}

.coach-cards-head-info { flex: 1; min-width: 0; }

.coach-cards-head h3 {
  font-size: 15px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 2px;
}

.coach-cards-head p {
  font-size: 12px;
  color: var(--text-muted);
}

.coach-cards-clear {
  font-size: 16px;
  padding: 4px 10px;
  flex-shrink: 0;
}

.coach-cards-topic-bar {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 8px;
  align-items: center;
  padding: 10px 18px;
  background: var(--surface2);
  border-bottom: 1px solid var(--border);
}

.coach-cards-topic-bar label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.4px;
  color: var(--text-dim);
}

.coach-cards-topic-bar select,
.coach-cards-topic-bar input {
  width: 100%;
  padding: 6px 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 13px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.13s;
}

.coach-cards-topic-bar select:focus,
.coach-cards-topic-bar input:focus { border-color: var(--accent); }

.coach-cards-topic-bar select {
  grid-column: 2;
}

.coach-cards-topic-bar input {
  grid-column: 2;
}

.coach-cards-list {
  flex: 1;
  overflow-y: auto;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.coach-cards-list::-webkit-scrollbar { width: 6px; }
.coach-cards-list::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }

.coach-card {
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: opacity 0.15s, border-color 0.15s;
}

.coach-card.discarded {
  opacity: 0.45;
  background: var(--bg);
}

.coach-card.is-mc {
  border-left: 3px solid var(--selten-text);
}

.coach-card-head {
  display: flex;
  align-items: center;
  gap: 8px;
}

.coach-card-num {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.6px;
  color: var(--text-dim);
  text-transform: uppercase;
}

.coach-card-toggle {
  margin-left: auto;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: 1px solid var(--border2);
  background: var(--surface);
  color: var(--text-muted);
  font-weight: 700;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.13s;
}

.coach-card-toggle.kept {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.coach-card-toggle.discarded {
  background: var(--oft-bg);
  color: var(--oft-text);
  border-color: var(--oft-border);
}

.coach-card-field {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.coach-card-field label {
  font-size: 9.5px;
  font-weight: 700;
  letter-spacing: 0.7px;
  text-transform: uppercase;
  color: var(--text-dim);
}

.coach-card-field textarea {
  width: 100%;
  padding: 7px 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 13px;
  font-family: inherit;
  line-height: 1.5;
  resize: vertical;
  outline: none;
  transition: border-color 0.13s;
}

.coach-card-field textarea:focus { border-color: var(--accent); }

.coach-cards-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 18px;
  border-top: 1px solid var(--border);
  background: var(--surface2);
  gap: 12px;
  flex-shrink: 0;
}

.coach-cards-kept {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--accent);
}

.coach-cards-footer .btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

/* ── LERNEN PAGE LAYOUT ── */
.lernen-layout {
  padding: 28px 36px;
  max-width: 1100px;
  margin: 0 auto;
}

.lernen-header {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 24px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
  position: relative;
}

.lernen-header h2 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.025em;
  background: linear-gradient(180deg, #ffffff 0%, #d8c2ff 90%, var(--text-muted) 200%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.lernen-header p {
  font-size: 14px;
  color: var(--text-muted);
}

.lernen-header-actions {
  position: absolute;
  top: 0;
  right: 0;
  display: flex;
  gap: 10px;
  align-items: center;
}

.lernen-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

@media (max-width: 760px) {
  .lernen-list {
    grid-template-columns: 1fr;
  }
}

.lernen-topic {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 18px 14px 50px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  cursor: pointer;
  user-select: none;
  position: relative;
  transition: border-color 0.13s, background 0.13s, transform 0.13s;
}

.lernen-topic:hover:not(.is-disabled) {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.lernen-topic.is-disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.lernen-topic-check {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 22px;
  height: 22px;
  border: 2px solid var(--border);
  border-radius: 7px;
  background: var(--bg);
  transition: background 0.15s, border-color 0.15s, box-shadow 0.15s;
  display: flex;
  align-items: center;
  justify-content: center;
}

.lernen-topic.selected {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.lernen-topic.selected .lernen-topic-check {
  background: linear-gradient(135deg, var(--accent), var(--accent-hover));
  border-color: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow, rgba(168,85,247,0.4));
}

.lernen-topic.selected .lernen-topic-check::after {
  content: "✓";
  color: #fff;
  font-size: 14px;
  font-weight: 800;
  line-height: 1;
}

.lernen-topic-info {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.lernen-topic-title {
  font-size: 16px;
  font-weight: 700;
}

.lernen-topic-meta {
  font-size: 12px;
  color: var(--text-muted);
}

.lernen-empty {
  background: var(--surface);
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  text-align: center;
  padding: 56px 40px;
  color: var(--text-muted);
}

/* ── KARTEN PAGE LAYOUT (updated) ── */
.karten-layout {
  padding: 28px 36px;
  max-width: 1300px;
  margin: 0 auto;
}

/* ── Topic Edit Mode (Stift im Group-Header) ── */
.topic-edit-btn {
  background: transparent;
  border: 1px solid var(--border2);
  color: var(--text-muted);
  width: 26px;
  height: 26px;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.13s, border-color 0.13s, color 0.13s, transform 0.13s;
  flex-shrink: 0;
  margin-right: 6px;
}

.topic-edit-btn:hover {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}

.topic-edit-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  box-shadow: 0 0 0 3px var(--accent-dim);
}

.topic-sort-btn {
  margin-left: auto;
  padding: 5px 12px;
  background: transparent;
  border: 1px solid var(--border2);
  color: var(--text-muted);
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.13s, color 0.13s, border-color 0.13s;
}

.topic-sort-btn:hover {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}

.topic-sort-btn.active {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-dim);
}

.topic-variant-btn {
  padding: 5px 12px;
  background: transparent;
  border: 1px solid var(--border2);
  color: var(--text-muted);
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.13s, color 0.13s, border-color 0.13s;
}

.topic-variant-btn:hover:not(:disabled) {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}

.topic-variant-btn:disabled {
  opacity: 0.45;
  cursor: default;
}

/* Übungs-Varianten: Vorlagen-Auswahl-Modal */
.variant-picker-box {
  max-width: 560px;
  width: 92vw;
}

.variant-picker-hint {
  font-size: 13px;
  color: var(--text-muted);
  margin: 0 0 10px;
}

.variant-difficulty {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 13px;
  margin-bottom: 6px;
}

.variant-difficulty-label {
  font-weight: 600;
  color: var(--text-muted);
}

.variant-difficulty label {
  display: flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
}

.variant-difficulty-note {
  font-size: 12px;
  color: var(--text-muted);
  margin: 0 0 12px;
  line-height: 1.5;
}

.variant-picker-selectall {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  padding: 6px 2px;
  cursor: pointer;
  border-bottom: 1px solid var(--border2);
  margin-bottom: 6px;
}

.variant-card-list {
  max-height: 320px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: 10px;
}

.variant-card-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 8px;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
}

.variant-card-row:hover {
  background: var(--surface2);
}

.variant-card-type {
  flex-shrink: 0;
  font-size: 10.5px;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-muted);
  border: 1px solid var(--border2);
  border-radius: 4px;
  padding: 1px 6px;
}

.variant-card-q {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.variant-picker-count {
  margin-right: auto;
  font-size: 12.5px;
  color: var(--text-muted);
  align-self: center;
}

.topic-bury-btn {
  padding: 5px 10px;
  background: transparent;
  border: 1px solid var(--border2);
  color: var(--text-muted);
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.13s, color 0.13s, border-color 0.13s, transform 0.08s;
}

.topic-bury-btn:hover:not(:disabled) {
  background: rgba(249, 117, 112, 0.12);
  border-color: var(--danger);
  color: var(--danger);
  transform: translateY(-1px);
}

.topic-bury-btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* Empty-State: leeres Kapitel in der Karten-Übersicht */
.card-group-empty {
  padding: 28px 24px;
  text-align: center;
  font-size: 13px;
  color: var(--text-dim);
  background: var(--surface);
  border: 1px dashed var(--border);
  border-radius: var(--radius-sm);
  margin: 12px;
}

.card-group.is-empty .card-group-count {
  opacity: 0.55;
}

/* Friedhof: Kapitel-Checkbox (Tri-State: unchecked / partial / checked) */
.graveyard-group-check {
  width: 18px;
  height: 18px;
  border-radius: 5px;
  border: 2px solid var(--border2);
  background: var(--surface);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 800;
  color: #fff;
  flex-shrink: 0;
  margin-right: 4px;
  transition: background 0.13s, border-color 0.13s;
  user-select: none;
}

.graveyard-group-check:hover {
  border-color: var(--accent);
}

.graveyard-group-check.checked {
  background: var(--accent);
  border-color: var(--accent);
}

.graveyard-group-check.checked::after {
  content: '✓';
}

.graveyard-group-check.partial {
  background: var(--accent);
  border-color: var(--accent);
}

.graveyard-group-check.partial::after {
  content: '−';
}

.card-group-edit-hint {
  margin-left: auto;
  font-size: 11px;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 4px 10px;
  border-radius: 12px;
  border: 1px solid #2e3470;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.card-group.edit-mode {
  border: 1.5px solid var(--accent);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(110, 122, 255, 0.05) 0%, transparent 100%);
}

.flash-card.edit-mode {
  cursor: pointer;
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 1px var(--accent), 0 4px 14px -2px rgba(110, 122, 255, 0.3);
  animation: edit-pulse 2.4s ease-in-out infinite;
}

.flash-card.edit-mode:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 0 1.5px var(--accent), 0 8px 22px -2px rgba(110, 122, 255, 0.45);
}

@keyframes edit-pulse {
  0%, 100% { box-shadow: 0 0 0 1px var(--accent), 0 4px 14px -2px rgba(110, 122, 255, 0.25); }
  50%      { box-shadow: 0 0 0 1.5px var(--accent), 0 4px 18px -2px rgba(110, 122, 255, 0.5); }
}

.card-edit-badge {
  position: absolute;
  bottom: 8px;
  left: 8px;
  right: 8px;
  background: var(--accent);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: 6px;
  text-align: center;
  pointer-events: none;
  z-index: 5;
  opacity: 0.92;
}

/* ── Card Editor Overlay (Vollbild) ── */
.card-editor-overlay {
  position: fixed;
  inset: 0;
  background: rgba(8, 10, 24, 0.75);
  backdrop-filter: blur(6px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 28px;
  animation: editor-fade 0.18s ease-out;
}

@keyframes editor-fade {
  from { opacity: 0; }
  to   { opacity: 1; }
}

.card-editor-container {
  position: relative;
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 18px;
  width: 100%;
  max-width: 1180px;
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  box-shadow:
    0 0 80px -10px var(--glow-violet),
    0 0 160px -20px var(--glow-pink),
    0 24px 60px -10px rgba(0, 0, 0, 0.6);
  overflow: hidden;
  animation: editor-slide 0.22s ease-out;
}

@keyframes editor-slide {
  from { transform: translateY(12px); opacity: 0; }
  to   { transform: translateY(0); opacity: 1; }
}

.card-editor-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 22px 28px 16px;
  border-bottom: 1px solid var(--border);
  gap: 14px;
}

.card-editor-header-left { flex: 1; min-width: 0; }

.card-editor-header h2 {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.4px;
  margin-bottom: 6px;
}

.card-editor-sub {
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.card-editor-sub .preview-type-badge { margin-left: 0; }

.card-editor-divider {
  color: var(--text-dim);
  font-weight: 700;
}

.card-editor-body {
  flex: 1;
  overflow-y: auto;
  padding: 20px 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card-editor-body::-webkit-scrollbar { width: 6px; }
.card-editor-body::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }

.card-editor-toolbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}

.card-editor-hint {
  font-size: 12px;
  color: var(--text-muted);
  background: var(--accent-dim);
  padding: 5px 11px;
  border-radius: 12px;
  border: 1px solid #2e3470;
}

.card-editor-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.card-editor-field.hidden { display: none; }

.card-editor-field label {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-dim);
}

.card-editor-field textarea {
  width: 100%;
  padding: 12px 14px;
  background: var(--surface2);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 15px;
  font-family: inherit;
  line-height: 1.6;
  resize: vertical;
  outline: none;
  transition: border-color 0.15s;
  min-height: 80px;
}

.card-editor-field textarea:focus { border-color: var(--accent); }

.card-editor-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 28px;
  border-top: 1px solid var(--border);
  background: var(--surface2);
  gap: 14px;
}

.card-editor-footer-right {
  display: flex;
  gap: 8px;
}

.card-editor-delete {
  color: var(--oft-text);
  font-size: 13px;
}

.card-editor-delete:hover {
  background: var(--oft-bg);
  color: var(--oft-text);
}

/* ── Confirm Dialog (Sub-Modal im Card-Editor) ── */
.confirm-dialog-overlay {
  position: absolute;
  inset: 0;
  background: rgba(8, 10, 24, 0.72);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  animation: editor-fade 0.14s ease-out;
}

.confirm-dialog {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: 14px;
  padding: 28px 32px 22px;
  width: 100%;
  max-width: 460px;
  text-align: center;
  box-shadow: 0 18px 48px -8px rgba(0, 0, 0, 0.7);
  animation: editor-slide 0.18s ease-out;
}

.confirm-dialog-icon {
  font-size: 36px;
  margin-bottom: 12px;
  color: #fbbf24;
}

.confirm-dialog h3 {
  font-size: 18px;
  font-weight: 800;
  letter-spacing: -0.3px;
  margin-bottom: 8px;
}

.confirm-dialog p {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 22px;
  line-height: 1.5;
}

.confirm-dialog-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.confirm-dialog-actions .btn {
  width: 100%;
  justify-content: center;
}

.confirm-discard-btn {
  background: var(--oft-bg);
  color: var(--oft-text);
  border-color: var(--oft-border);
}

.confirm-discard-btn:hover {
  background: var(--oft-text);
  color: #fff;
  border-color: var(--oft-text);
}

/* ── Markdown-Field (Editor + Live-Preview) ── */
.md-field { gap: 8px; }

.md-field-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.md-img-btn {
  background: transparent;
  border: 1px dashed var(--border2);
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 12px;
  cursor: pointer;
  transition: border-color 0.13s, color 0.13s, background 0.13s;
}

.md-img-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-dim);
}

.md-split {
  display: grid;
  grid-template-columns: 1fr 28px 1fr;
  gap: 0;
  align-items: stretch;
}

/* Wrapper für jede Spalte mit Header + Inhalt */
.md-pane {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1.5px solid var(--border);
  transition: border-color 0.18s, box-shadow 0.18s;
}

.md-pane-header {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.md-pane-icon { font-size: 13px; }

.md-pane-title { letter-spacing: 1.2px; }

.md-pane-hint {
  margin-left: auto;
  font-size: 9px;
  font-weight: 600;
  letter-spacing: 0.6px;
  padding: 2px 7px;
  border-radius: 8px;
  text-transform: uppercase;
}

/* Editor-Pane: dunkler, code-editor-feeling */
.md-pane-editor {
  background: #0d1020;
  border-color: #2a2f4a;
}

.md-pane-editor .md-pane-header {
  background: #161b30;
  color: #e8e3a3;
  border-bottom-color: #2a2f4a;
}

.md-pane-editor .md-pane-hint {
  background: rgba(232, 227, 163, 0.12);
  color: #e8e3a3;
}

.md-pane-editor:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}

/* Preview-Pane: papierartig, hell, "fertig" */
.md-pane-preview {
  background: linear-gradient(180deg, #1a1f3a 0%, #1f2547 100%);
  border-color: #3a3f6e;
  position: relative;
}

.md-pane-preview .md-pane-header {
  background: rgba(110, 122, 255, 0.13);
  color: #aab4ff;
  border-bottom-color: #3a3f6e;
}

.md-pane-preview .md-pane-hint {
  background: rgba(110, 122, 255, 0.2);
  color: #aab4ff;
}

.md-pane-preview::after {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  border-radius: var(--radius-sm);
  box-shadow: inset 0 0 30px rgba(110, 122, 255, 0.06);
}

/* Trennspalte mit Pfeil */
.md-pane-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  position: relative;
}

.md-pane-divider::before {
  content: '';
  position: absolute;
  top: 14px;
  bottom: 14px;
  left: 50%;
  width: 1px;
  background: linear-gradient(180deg,
    transparent 0%,
    var(--border2) 30%,
    var(--border2) 70%,
    transparent 100%
  );
}

.md-pane-divider-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--surface);
  border: 1.5px solid var(--border2);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  color: var(--text-muted);
  position: relative;
  z-index: 1;
}

/* Textarea innerhalb der Editor-Pane — Sans-Serif für Lerntext-Lesbarkeit,
   Monospace nur für Code-Snippets (im Markdown via `code` rendered).
   Höhere Spezifität (.card-editor-field-Selector vor textarea schlägt sonst durch) */
.card-editor-field .md-textarea,
textarea.md-textarea {
  width: 100%;
  padding: 14px 16px;
  background: transparent;
  border: none;
  color: #f7f8fc;
  font-size: 14.5px;
  font-family: var(--font-sans);
  font-feature-settings: var(--font-feature);
  line-height: 1.65;
  letter-spacing: -0.005em;
  resize: vertical;
  outline: none;
  transition: background 0.15s;
  min-height: 120px;
  flex: 1;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  caret-color: var(--accent);
  border-radius: 0;
}

.card-editor-field .md-textarea:focus,
textarea.md-textarea:focus {
  border-color: transparent;
}

.md-textarea::placeholder {
  color: rgba(247, 248, 252, 0.3);
}

.md-textarea::selection {
  background: rgba(110, 122, 255, 0.45);
  color: #ffffff;
}

.md-textarea.md-drag-over {
  background: rgba(110, 122, 255, 0.1);
  outline: 2px dashed var(--accent);
  outline-offset: -4px;
}

/* Preview innerhalb der Preview-Pane */
.md-preview {
  padding: 14px 16px;
  background: transparent;
  border: none;
  color: var(--text);
  font-size: 14px;
  line-height: 1.6;
  overflow-y: auto;
  min-height: 120px;
  max-height: 320px;
  flex: 1;
}

.md-preview.md-preview-empty {
  display: flex;
  align-items: center;
  justify-content: center;
}

.md-preview.md-preview-empty::before {
  content: attr(data-empty);
  color: var(--text-dim);
  font-style: italic;
  font-size: 13px;
}

/* ── Markdown Content (bei Anzeige in Karten / Study / Preview) ── */
.md-content { word-wrap: break-word; }

.md-content p {
  margin: 0 0 0.65em;
  line-height: 1.55;
}

.md-content p:last-child { margin-bottom: 0; }

.md-content strong { font-weight: 700; }
.md-content em { font-style: italic; }

.md-content .md-code-inline {
  font-family: ui-monospace, "Fira Code", Consolas, monospace;
  font-size: 0.92em;
  background: var(--accent-dim);
  color: var(--accent);
  padding: 1px 6px;
  border-radius: 4px;
  border: 1px solid #2e3470;
}

.md-content .md-code-block {
  font-family: ui-monospace, "Fira Code", Consolas, monospace;
  font-size: 13px;
  background: var(--bg);
  color: var(--text);
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  overflow-x: auto;
  margin: 6px 0;
  white-space: pre-wrap;
  word-break: break-word;
}

.md-content .md-img {
  max-width: 100%;
  max-height: 320px;
  border-radius: 6px;
  border: 1px solid var(--border);
  margin: 6px 0;
  display: block;
}

/* Bild in kleinen Karten/Hover schmaler */
.flash-card .md-content .md-img,
.card-hover-overlay .md-content .md-img {
  max-height: 130px;
}

/* In Study-Mode dürfen Bilder größer sein */
.study-card .md-content .md-img,
.study-card-mc .md-content .md-img {
  max-height: 380px;
}

/* Bild im Preview-Pane des Editors etwas kleiner */
.md-preview .md-img { max-height: 220px; }

/* Mobile / schmale Editoren: Spalten unter einander */
@media (max-width: 900px) {
  .md-split {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto auto;
    gap: 8px;
  }
  .md-pane-divider {
    height: 28px;
    width: 100%;
  }
  .md-pane-divider::before {
    top: 50%;
    bottom: auto;
    left: 14px;
    right: 14px;
    width: auto;
    height: 1px;
    background: linear-gradient(90deg,
      transparent 0%,
      var(--border2) 30%,
      var(--border2) 70%,
      transparent 100%
    );
  }
  .md-pane-divider-icon {
    transform: rotate(90deg);
  }
  .md-preview {
    max-height: 220px;
  }
}

/* ─────────────────────────────────────────────
   LIGHT-THEME OVERRIDES
   für hardcoded dark colors aus dem Stylesheet
   ───────────────────────────────────────────── */

.theme-light .navbar {
  background: rgba(255, 255, 255, 0.85);
  border-bottom-color: var(--border);
}

.theme-light .modal {
  background: rgba(15, 20, 50, 0.45);
}

.theme-light .card-editor-overlay,
.theme-light .confirm-dialog-overlay {
  background: rgba(15, 20, 50, 0.40);
}

/* MC-Badge: helle Variante */
.theme-light .badge-mc {
  background: #e0eaff !important;
  color: #2548c2 !important;
  border-color: #b6c9f0 !important;
}

/* Markdown Editor-Pane: bleibt dunkler als Umfeld (wie GitHub Code-Block in Light-Mode),
   aber nicht so kontrastiv wie im Dark-Mode */
.theme-light .md-pane-editor {
  background: #1c1f2c;
  border-color: #2a2d3a;
}

.theme-light .md-pane-editor .md-pane-header {
  background: #252836;
  color: #e8e3a3;
  border-bottom-color: #2a2d3a;
}

/* Editor-Textarea-Text bleibt hell auf dunklem Pane */
.theme-light .md-textarea {
  color: #f7f8fc;
}

.theme-light .md-textarea::placeholder {
  color: rgba(247, 248, 252, 0.35);
}

/* Preview-Pane im Light-Mode: papier-artig, hell */
.theme-light .md-pane-preview {
  background: linear-gradient(180deg, #ffffff 0%, #f8f9fc 100%);
  border-color: var(--border);
}

.theme-light .md-pane-preview .md-pane-header {
  background: var(--accent-soft);
  color: var(--accent);
  border-bottom-color: var(--border);
}

.theme-light .md-pane-preview::after {
  box-shadow: inset 0 0 30px rgba(88, 98, 232, 0.04);
}

/* Code-Block in Markdown-Content im Light-Mode */
.theme-light .md-content .md-code-block {
  background: var(--surface2);
  border-color: var(--border);
  color: #1c1f2c;
}

.theme-light .md-content .md-code-inline {
  background: var(--accent-dim);
  color: var(--accent);
  border-color: var(--accent-glow);
}

/* Login-Logo: weicherer Glow im Light Mode */
.theme-light .login-logo {
  filter: drop-shadow(0 4px 18px var(--glow-violet));
}

/* Login-Overlay-Background im Light: noch dezentere Glows */
.theme-light .login-overlay {
  background:
    radial-gradient(ellipse at top, rgba(236,72,153,0.06) 0%, transparent 50%),
    radial-gradient(ellipse at bottom right, rgba(168,85,247,0.06) 0%, transparent 50%),
    var(--bg);
}

.theme-light .login-box::before {
  background:
    radial-gradient(circle at 30% 0%, rgba(236,72,153,0.10) 0%, transparent 55%),
    radial-gradient(circle at 70% 100%, rgba(168,85,247,0.10) 0%, transparent 55%);
}

/* Sidebar-Glow im Light Mode dezenter */
.theme-light .app-sidebar::after {
  opacity: 0.6;
  background: linear-gradient(180deg,
    transparent 0%,
    rgba(236,72,153,0.18) 25%,
    rgba(168,85,247,0.18) 50%,
    rgba(99,102,241,0.18) 75%,
    transparent 100%
  );
}

/* Dashboard-Hero h1: Gradient-Text im Light-Mode angepasst */
.theme-light .dashboard-hero h1 {
  background: linear-gradient(180deg, #0a0c14 0%, #4a5060 180%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Streak-Hero (Fortschritt): Gradient ist hardcoded orange — bleibt im Light-Mode auch */
.theme-light .streak-hero {
  box-shadow: 0 4px 18px rgba(255, 107, 0, 0.25);
}

/* Heatmap leere Zelle: in light hell statt dunkel */
.theme-light .heatmap-cell.h-0 {
  background: #eef0f5;
}

/* ── Demo-Account: Badge in Navbar + Disabled-States ── */
.demo-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 9px;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.12em;
  color: #fff;
  background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
  border-radius: 100px;
  box-shadow: 0 0 10px rgba(245, 158, 11, 0.4);
  margin-right: 8px;
  user-select: none;
  cursor: help;
}

.is-demo-account #coachInput:disabled,
.is-demo-account #coachSendBtn:disabled,
.is-demo-account #generateBtn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.is-demo-account #coachSendBtn:disabled {
  background: var(--surface2);
  color: var(--text-dim);
  box-shadow: none;
}

/* ──────────────────────────────────────────
   SUNSET-THEME OVERRIDES
   ────────────────────────────────────────── */
.theme-sunset .dashboard-hero h1 {
  background: linear-gradient(180deg, #ffffff 0%, #fbcb8a 90%, var(--text-muted) 200%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.theme-sunset .lernen-header h2,
.theme-sunset .card-group-title {
  background: linear-gradient(180deg, #ffffff 0%, #fbcb8a 90%, var(--text-muted) 200%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ──────────────────────────────────────────
   FOREST-THEME OVERRIDES
   ────────────────────────────────────────── */
.theme-forest .dashboard-hero h1 {
  background: linear-gradient(180deg, #ffffff 0%, #a7e8c4 90%, var(--text-muted) 200%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.theme-forest .lernen-header h2,
.theme-forest .card-group-title {
  background: linear-gradient(180deg, #ffffff 0%, #a7e8c4 90%, var(--text-muted) 200%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ──────────────────────────────────────────
   CYBERPUNK-THEME OVERRIDES (Neon, Scanlines, Grid)
   ────────────────────────────────────────── */
.theme-cyberpunk .dashboard-hero h1 {
  background: linear-gradient(180deg, #ffffff 0%, #f0abfc 60%, #06b6d4 200%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  text-shadow: 0 0 12px rgba(217,70,239,0.35);
}

.theme-cyberpunk .lernen-header h2,
.theme-cyberpunk .card-group-title {
  background: linear-gradient(180deg, #ffffff 0%, #f0abfc 90%, var(--text-muted) 200%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Cyberpunk: Subtiles Grid-Pattern als Body-Background */
.theme-cyberpunk body {
  background-image:
    linear-gradient(rgba(217,70,239,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(6,182,212,0.04) 1px, transparent 1px);
  background-size: 40px 40px, 40px 40px;
  background-attachment: fixed;
  background-color: var(--bg);
}

/* Cyberpunk: Scanlines als Overlay über dem ganzen Viewport */
.theme-cyberpunk body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9998;
  background: repeating-linear-gradient(
    0deg,
    transparent 0px,
    transparent 2px,
    rgba(0,0,0,0.18) 2px,
    rgba(0,0,0,0.18) 3px
  );
  mix-blend-mode: multiply;
  opacity: 0.55;
}

/* Cyberpunk: kräftigerer Glow auf Buttons + Karten */
.theme-cyberpunk .btn-primary {
  box-shadow:
    0 0 0 1px rgba(217,70,239,0.30),
    0 6px 22px -2px rgba(217,70,239,0.50),
    0 0 14px rgba(6,182,212,0.20);
}

.theme-cyberpunk .login-logo {
  filter: drop-shadow(0 0 16px rgba(217,70,239,0.55));
}

.theme-cyberpunk .flash-card.selected,
.theme-cyberpunk .lernen-topic.selected {
  box-shadow: 0 0 18px rgba(217,70,239,0.30), 0 0 36px rgba(6,182,212,0.18);
}

/* Card-Status-Dot: bleibt durch Variablen automatisch korrekt */

/* ──────────────────────────────────────────
   KONTO PAGE
   ────────────────────────────────────────── */
.account-layout {
  padding: 40px 48px;
  max-width: 760px;
  margin: 0 auto;
}

.account-header {
  margin-bottom: 32px;
}

.account-header h1 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 6px;
  background: linear-gradient(180deg, #ffffff 0%, #d8c2ff 90%, var(--text-muted) 200%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.account-header p {
  font-size: 14px;
  color: var(--text-muted);
}

.account-section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px 30px;
  margin-bottom: 18px;
  box-shadow: 0 0 30px -10px var(--glow-violet);
}

.account-section-head {
  margin-bottom: 22px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}

.account-section-head h2 {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: 4px;
}

.account-section-head p {
  font-size: 13px;
  color: var(--text-muted);
}

.account-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.account-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.account-field label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  color: var(--text-dim);
}

.account-field input {
  padding: 10px 13px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-size: 14px;
  font-family: inherit;
  outline: none;
  transition: border-color 0.13s, background 0.13s;
}

.account-field input:focus {
  border-color: var(--accent);
}

.account-field input:read-only,
.account-field input[readonly] {
  background: var(--bg);
  color: var(--text-muted);
  cursor: not-allowed;
}

.account-field-hint {
  font-size: 11.5px;
  color: var(--text-dim);
  margin-top: 2px;
}

.account-form-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-top: 4px;
}

.account-status {
  font-size: 12.5px;
  font-weight: 500;
}

.account-status-ok {
  color: var(--selten-text);
}

.account-status-error {
  color: var(--oft-text);
}

/* ──────────────────────────────────────────
   ABO PAGE
   ────────────────────────────────────────── */
.abo-layout {
  padding: 40px 48px;
  max-width: 1000px;
  margin: 0 auto;
}

.abo-header {
  text-align: center;
  margin-bottom: 36px;
}

.abo-header h1 {
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.03em;
  margin-bottom: 10px;
  background: linear-gradient(180deg, #ffffff 0%, #d8c2ff 90%, var(--text-muted) 200%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.abo-header p {
  font-size: 14.5px;
  color: var(--text-muted);
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.55;
}

.abo-plans {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-bottom: 24px;
}

.abo-plan {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px 28px 24px;
  position: relative;
  transition: border-color 0.16s ease, box-shadow 0.16s ease;
  display: flex;
  flex-direction: column;
}

.abo-plan-pro {
  border-color: transparent;
  background:
    radial-gradient(ellipse at top right, var(--glow-pink) 0%, transparent 55%),
    radial-gradient(ellipse at bottom left, var(--glow-violet) 0%, transparent 55%),
    var(--surface);
  box-shadow:
    0 0 0 1px var(--accent-glow),
    0 0 30px -8px var(--glow-violet),
    var(--shadow);
  position: relative;
}

.abo-plan-pro::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  padding: 1.5px;
  background: var(--accent-gradient);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  pointer-events: none;
}

.abo-plan:not(.abo-plan-active):hover {
  border-color: var(--border2);
}

.abo-plan-pro:hover {
  border-color: var(--accent);
}

.abo-plan-tag {
  position: absolute;
  top: 16px;
  right: 18px;
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.4px;
  text-transform: uppercase;
  padding: 3px 10px;
  border-radius: 100px;
  background: var(--surface2);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.abo-plan-tag-pro {
  background: var(--accent-gradient);
  color: #fff;
  border-color: transparent;
  text-transform: none;
  letter-spacing: 0;
  box-shadow: 0 2px 14px var(--glow-violet);
}

.abo-plan h2 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 10px;
}

.abo-plan-price {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 10px;
}

.abo-plan-price-amount {
  font-size: 36px;
  font-weight: 700;
  letter-spacing: -0.035em;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.abo-plan-pro .abo-plan-price-amount {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.abo-plan-price-period {
  font-size: 13px;
  color: var(--text-muted);
}

.abo-plan-desc {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 20px;
}

.abo-plan-features {
  list-style: none;
  padding: 0;
  margin: 0 0 22px;
  display: flex;
  flex-direction: column;
  gap: 9px;
  flex: 1;
}

.abo-plan-features li {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  font-size: 13.5px;
  color: var(--text);
  line-height: 1.5;
}

.abo-plan-features li.abo-feat-disabled {
  color: var(--text-dim);
}

.abo-feat-icon {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  background: var(--selten-bg);
  color: var(--selten-text);
  border: 1px solid var(--selten-border);
  margin-top: 1px;
}

.abo-feat-disabled .abo-feat-icon {
  background: var(--surface2);
  color: var(--text-dim);
  border-color: var(--border);
}

.abo-plan-cta {
  width: 100%;
  padding: 11px 16px;
  font-size: 14px;
  font-weight: 600;
}

.abo-plan-cta:disabled {
  opacity: 0.7;
  cursor: not-allowed;
}

.abo-footnote {
  text-align: center;
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 14px;
  letter-spacing: 0.2px;
}

@media (max-width: 720px) {
  .abo-plans { grid-template-columns: 1fr; }
  .account-layout, .abo-layout { padding: 28px 20px; }
}

/* ═══════════════════════════════════════════════════
   COACH QUICK-START-CHIPS
   ═══════════════════════════════════════════════════ */
.coach-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: center;
  margin-top: 18px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.coach-chip {
  padding: 9px 14px;
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: 18px;
  cursor: pointer;
  transition: all 0.15s ease;
  letter-spacing: 0.1px;
}

.coach-chip:hover {
  background: var(--accent-soft, rgba(168, 85, 247, 0.12));
  border-color: var(--accent);
  color: var(--text);
  transform: translateY(-1px);
}

/* ═══════════════════════════════════════════════════
   COACH PLAN-PANE (Plan-Vorschau rechts neben Chat)
   ═══════════════════════════════════════════════════ */
.coach-plan-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.coach-plan-goal {
  font-size: 12px;
  color: var(--accent);
  margin-top: 4px;
  font-weight: 500;
}

.coach-plan-intro {
  font-size: 12.5px;
  color: var(--text-muted);
  line-height: 1.55;
  padding: 12px 18px 4px;
  border-bottom: 1px solid var(--border);
}

.coach-plan-steps {
  flex: 1;
  overflow-y: auto;
  padding: 14px 14px 10px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.coach-plan-steps::-webkit-scrollbar { width: 6px; }
.coach-plan-steps::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }

.coach-plan-step {
  padding: 12px 14px;
  background: var(--surface2, var(--bg));
  border: 1px solid var(--border);
  border-radius: var(--radius-md, 10px);
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: border-color 0.15s, background 0.15s;
}

.coach-plan-step.has-cards {
  border-color: var(--accent);
  background: var(--accent-soft, rgba(168, 85, 247, 0.06));
}

.coach-plan-step.is-done {
  opacity: 0.7;
}

.coach-plan-step-head {
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

.coach-plan-step-num {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  font-size: 12px;
  font-weight: 700;
}

.coach-plan-step.is-done .coach-plan-step-num {
  background: var(--success, #10b981);
}

.coach-plan-step-titles { flex: 1; min-width: 0; }

.coach-plan-step-titles h4 {
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-bottom: 3px;
}

.coach-plan-step-titles p {
  font-size: 12px;
  color: var(--text-muted);
  line-height: 1.45;
}

.coach-plan-step-meta {
  padding-left: 36px;
}

.coach-plan-step-status {
  font-size: 11.5px;
  color: var(--text-muted);
  font-style: italic;
}

.coach-plan-step-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding-left: 36px;
}

.coach-plan-step-actions .btn {
  padding: 6px 12px;
  font-size: 12px;
}

.coach-plan-footer {
  padding: 12px 18px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

/* ═══════════════════════════════════════════════════
   LEHRPLAN-SEITE
   ═══════════════════════════════════════════════════ */
.lehrplan-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 0;
  height: calc(100vh - var(--nav-h));
}

.lehrplan-sidebar {
  border-right: 1px solid var(--border);
  padding: 24px 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  overflow-y: auto;
}

.sidebar-label {
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--text-dim);
  padding: 0 4px;
}

.lehrplan-new-btn {
  width: 100%;
  font-size: 12.5px;
  padding: 9px 12px;
}

.lehrplan-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-top: 6px;
}

.lehrplan-list-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  padding: 10px 12px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm, 8px);
  cursor: pointer;
  text-align: left;
  color: var(--text);
  transition: all 0.15s;
}

.lehrplan-list-item:hover {
  background: var(--surface);
  border-color: var(--border);
}

.lehrplan-list-item.active {
  background: var(--accent-soft, rgba(168, 85, 247, 0.12));
  border-color: var(--accent);
}

.lehrplan-list-title {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.lehrplan-list-meta {
  font-size: 11px;
  color: var(--text-muted);
}

.lehrplan-content {
  padding: 32px 36px;
  overflow-y: auto;
}

.lehrplan-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px 40px;
  color: var(--text-muted);
  background: var(--surface);
  border: 1px dashed var(--border2);
  border-radius: var(--radius-lg);
  margin-top: 40px;
  max-width: 540px;
  margin-left: auto;
  margin-right: auto;
}

.lehrplan-empty-icon {
  font-size: 56px;
  margin-bottom: 18px;
  opacity: 0.8;
}

.lehrplan-empty h3 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 10px;
  letter-spacing: -0.02em;
}

.lehrplan-empty p {
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 22px;
  max-width: 380px;
}

.lehrplan-detail-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 22px;
}

.lehrplan-detail-head-info { flex: 1; min-width: 0; }

#lehrplanTitle {
  font-size: 26px;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 8px;
  background: linear-gradient(180deg, var(--text) 0%, var(--accent) 220%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.lehrplan-goal {
  font-size: 14px;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 10px;
}

.lehrplan-intro {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 720px;
}

.lehrplan-delete-btn {
  font-size: 12px;
  flex-shrink: 0;
}

.lehrplan-progress {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 28px;
}

.lehrplan-progress-bar {
  flex: 1;
  height: 8px;
  background: var(--surface2, var(--surface));
  border-radius: 4px;
  overflow: hidden;
}

.lehrplan-progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), var(--accent-2, var(--accent)));
  transition: width 0.4s ease;
}

.lehrplan-progress-label {
  font-size: 12.5px;
  color: var(--text-muted);
  font-weight: 500;
  white-space: nowrap;
}

.lehrplan-steps {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.lehrplan-step {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 18px;
  padding: 18px 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: border-color 0.15s, background 0.15s;
}

.lehrplan-step.has-cards {
  border-color: var(--accent);
}

.lehrplan-step.is-done {
  background: var(--surface2, var(--surface));
  opacity: 0.8;
}

.lehrplan-step-num {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  color: #fff;
  border-radius: 50%;
  font-size: 15px;
  font-weight: 700;
  flex-shrink: 0;
}

.lehrplan-step.is-done .lehrplan-step-num {
  background: var(--success, #10b981);
}

.lehrplan-step-body { min-width: 0; }

.lehrplan-step-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 6px;
}

.lehrplan-step-head h3 {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.015em;
}

.lehrplan-step-done {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 11.5px;
  color: var(--text-muted);
  cursor: pointer;
  flex-shrink: 0;
  user-select: none;
}

.lehrplan-step-done input { cursor: pointer; }

.lehrplan-step-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.55;
  margin-bottom: 12px;
}

.lehrplan-step-status {
  margin-bottom: 12px;
}

.lehrplan-step-info {
  font-size: 12px;
  color: var(--text);
  font-weight: 500;
}

.lehrplan-step-info.muted { color: var(--text-muted); font-weight: 400; }

.lehrplan-step-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.lehrplan-step-actions .btn {
  font-size: 12.5px;
  padding: 7px 13px;
}

.lehrplan-step-lesson {
  margin-top: 14px;
  padding: 16px 18px;
  background: var(--surface2);
  border-left: 3px solid var(--accent);
  border-radius: 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text);
  max-height: 460px;
  overflow-y: auto;
}

.lehrplan-step-lesson.hidden { display: none; }

.lehrplan-step-lesson h1,
.lehrplan-step-lesson h2,
.lehrplan-step-lesson h3 {
  font-size: 15px;
  margin: 14px 0 6px;
}

.lehrplan-step-lesson p { margin: 0 0 10px; }
.lehrplan-step-lesson code {
  background: var(--surface);
  padding: 1px 5px;
  border-radius: 4px;
  font-size: 13px;
}

@media (max-width: 880px) {
  .lehrplan-layout { grid-template-columns: 1fr; }
  .lehrplan-sidebar {
    border-right: none;
    border-bottom: 1px solid var(--border);
    max-height: 220px;
  }
  .lehrplan-content { padding: 24px 20px; }
  .lehrplan-step {
    grid-template-columns: 36px 1fr;
    gap: 14px;
    padding: 14px 16px;
  }
}

/* ═══════════════════════════════════════════════════
   LEHRPLAN-GRUPPIERUNG auf LERNEN- und KARTEN-Seite
   ═══════════════════════════════════════════════════ */

/* Lernen-Seite: Section-Headings */
.lernen-section-heading {
  grid-column: 1 / -1;                /* volle Reihe, kein Karten-Deck daneben */
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  color: var(--text);
  padding: 18px 4px 10px;
  border-bottom: 2px solid var(--border2);
  margin: 18px 0 6px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.lernen-section-heading::before,
.lernen-section-heading::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
  opacity: 0.5;
}

.lernen-section-heading span {
  flex-shrink: 0;
  padding: 0 4px;
}

.lernen-section-heading.lernen-section-plan {
  color: var(--accent);
  border-bottom-color: var(--accent);
  margin-top: 32px;
}

.lernen-section-heading.lernen-section-plan::before,
.lernen-section-heading.lernen-section-plan::after {
  background: var(--accent);
  opacity: 0.4;
}

.lernen-plan-group {
  grid-column: 1 / -1;                /* Plan-Gruppe nimmt volle Breite */
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin: 4px 0 14px;
  padding: 14px 14px 10px;
  /* Innerhalb wieder 2-Spalten-Grid für die Schritt-Karten */
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.lernen-plan-group-head {
  grid-column: 1 / -1;                /* Plan-Titel über volle Breite */
}

@media (max-width: 760px) {
  .lernen-plan-group { grid-template-columns: 1fr; }
}

.lernen-plan-group-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 8px 10px;
  border-bottom: 1px dashed var(--border2);
  margin-bottom: 6px;
  gap: 10px;
}

.lernen-plan-group-title {
  font-size: 13.5px;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--text);
}

.lernen-plan-group-select-all {
  font-size: 11.5px;
  padding: 4px 10px;
}

.lernen-topic-step-badge {
  display: inline-block;
  padding: 2px 7px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.5px;
  background: var(--accent);
  color: #fff;
  border-radius: 4px;
  margin-right: 8px;
  vertical-align: middle;
}

/* Karten-Seite: Section-Headings + Plan-Gruppen */
.karten-section-heading {
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 1.8px;
  text-transform: uppercase;
  color: var(--text);
  padding: 18px 4px 10px;
  border-bottom: 2px solid var(--border2);
  margin: 18px 0 8px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.karten-section-heading::before,
.karten-section-heading::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
  opacity: 0.5;
}

.karten-section-heading span {
  flex-shrink: 0;
  padding: 0 4px;
}

.karten-section-heading.karten-section-plan {
  color: var(--accent);
  border-bottom-color: var(--accent);
  margin-top: 32px;
}

.karten-section-heading.karten-section-plan::before,
.karten-section-heading.karten-section-plan::after {
  background: var(--accent);
  opacity: 0.4;
}

.karten-plan-group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin: 12px 0 18px;
  padding: 14px 14px 4px;
}

.karten-plan-group-head {
  padding: 2px 6px 12px;
  border-bottom: 1px dashed var(--border2);
  margin-bottom: 10px;
}

.karten-plan-group-title {
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: -0.015em;
  color: var(--text);
}

.card-group-step-badge {
  display: inline-block;
  padding: 2px 7px;
  font-size: 10.5px;
  font-weight: 700;
  letter-spacing: 0.5px;
  background: var(--accent);
  color: #fff;
  border-radius: 4px;
  margin-right: 8px;
}

/* ═══════════════════════════════════════════════════
   ADMIN: AI-USAGE-STATS
   ═══════════════════════════════════════════════════ */
.admin-layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 36px;
}

.admin-header {
  position: relative;
  margin-bottom: 28px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--border);
}

.admin-header h2 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin-bottom: 6px;
}

.admin-header p {
  font-size: 13.5px;
  color: var(--text-muted);
  line-height: 1.55;
  max-width: 680px;
}

#adminRefreshBtn {
  position: absolute;
  top: 0;
  right: 0;
  font-size: 12.5px;
  padding: 8px 14px;
}

.admin-empty {
  padding: 60px 30px;
  text-align: center;
  background: var(--surface);
  border: 1px dashed var(--border2);
  border-radius: var(--radius-lg);
  color: var(--text-muted);
  font-size: 14px;
}

.admin-summary-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  margin-bottom: 32px;
}

.admin-stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.admin-stat-card.admin-stat-cost {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent-soft, rgba(168, 85, 247, 0.1)) 50%, var(--surface));
}

.admin-stat-label {
  font-size: 11.5px;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.admin-stat-value {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}

.admin-stat-card.admin-stat-cost .admin-stat-value {
  color: var(--accent);
}

.admin-stat-sub {
  font-size: 11.5px;
  color: var(--text-dim);
}

.admin-section {
  margin-bottom: 36px;
}

.admin-section h3 {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -0.015em;
  margin-bottom: 4px;
}

.admin-section-hint {
  font-size: 12.5px;
  color: var(--text-muted);
  margin-bottom: 12px;
}

.admin-table-wrap {
  overflow-x: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.admin-table th,
.admin-table td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.admin-table th {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--text-dim);
  background: color-mix(in srgb, var(--surface2, var(--surface)) 80%, var(--bg));
  position: sticky;
  top: 0;
}

.admin-table tbody tr:last-child td {
  border-bottom: none;
}

.admin-table tbody tr:hover {
  background: color-mix(in srgb, var(--accent-soft, rgba(168, 85, 247, 0.06)) 30%, transparent);
}

.admin-table td.num,
.admin-table th.num {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.admin-table .num-strong {
  font-weight: 700;
  color: var(--accent);
}

@media (max-width: 880px) {
  .admin-layout { padding: 22px 16px; }
  .admin-summary-cards { grid-template-columns: 1fr; }
  #adminRefreshBtn {
    position: static;
    margin-top: 12px;
  }
  .admin-table { font-size: 12px; }
  .admin-table th, .admin-table td { padding: 8px 10px; }
}