/* ─── CSS Custom Properties ─────────────────────────────── */
:root {
  --clr-bg: #f5f5f0;
  --clr-surface: #ffffff;
  --clr-surface2: #f0ede8;
  --clr-border: #ddd8d0;
  --clr-text: #1a1a1a;
  --clr-text-muted: #6b6b6b;
  --clr-primary: #2563eb;
  --clr-primary-hover: #1d4ed8;
  --clr-success: #16a34a;
  --clr-warn: #d97706;
  --clr-danger: #dc2626;
  --clr-shadow: rgba(0,0,0,0.08);
  --radius: 10px;
  --radius-sm: 6px;
  --nav-w: 240px;
  --transition: 0.18s ease;
}

[data-theme="dark"] {
  --clr-bg: #111110;
  --clr-surface: #1c1c1a;
  --clr-surface2: #252523;
  --clr-border: #333330;
  --clr-text: #ececec;
  --clr-text-muted: #9a9a9a;
  --clr-primary: #3b82f6;
  --clr-primary-hover: #60a5fa;
  --clr-shadow: rgba(0,0,0,0.35);
}

/* ─── Reset & Base ───────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.6;
  min-height: 100vh;
  transition: background var(--transition), color var(--transition);
}
a { color: var(--clr-primary); text-decoration: none; }
button { cursor: pointer; font: inherit; }
h1, h2, h3, h4 { line-height: 1.3; font-weight: 700; }
ul { list-style: none; }

/* ─── Layout ─────────────────────────────────────────────── */
#app { display: flex; min-height: 100vh; }

/* Sidebar */
#sidebar {
  width: var(--nav-w);
  background: var(--clr-surface);
  border-right: 1px solid var(--clr-border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  transition: transform var(--transition);
  overflow-y: auto;
}

.sidebar-header {
  padding: 20px 18px 14px;
  border-bottom: 1px solid var(--clr-border);
}
.sidebar-title {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--clr-text-muted);
  letter-spacing: .08em;
  text-transform: uppercase;
  margin-bottom: 4px;
}
.sidebar-subtitle { font-size: 1rem; font-weight: 700; }

nav ul { padding: 10px 0; }
nav li a, nav li button.nav-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 18px;
  color: var(--clr-text);
  font-size: 0.9rem;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  border-radius: 0;
  transition: background var(--transition);
}
nav li a:hover, nav li button.nav-btn:hover,
nav li a.active, nav li button.nav-btn.active {
  background: var(--clr-surface2);
  color: var(--clr-primary);
}
nav li a.active, nav li button.nav-btn.active { font-weight: 600; }
.nav-icon { font-size: 1em; width: 20px; text-align: center; }
.nav-section {
  padding: 14px 18px 4px;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: .08em;
}

.sidebar-footer {
  margin-top: auto;
  padding: 14px 18px;
  border-top: 1px solid var(--clr-border);
  display: flex;
  gap: 8px;
  align-items: center;
}

/* Main content */
#main {
  margin-left: var(--nav-w);
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Topbar */
#topbar {
  position: sticky;
  top: 0;
  background: var(--clr-surface);
  border-bottom: 1px solid var(--clr-border);
  padding: 12px 28px;
  display: flex;
  align-items: center;
  gap: 12px;
  z-index: 50;
}
#topbar h2 { font-size: 1.1rem; flex: 1; }
#menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.3rem;
  color: var(--clr-text);
}

#content { padding: 28px; flex: 1; max-width: 960px; }

/* ─── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-size: 0.9rem;
  font-weight: 600;
  transition: background var(--transition), opacity var(--transition);
}
.btn-primary { background: var(--clr-primary); color: #fff; }
.btn-primary:hover { background: var(--clr-primary-hover); }
.btn-secondary { background: var(--clr-surface2); color: var(--clr-text); border-color: var(--clr-border); }
.btn-secondary:hover { background: var(--clr-border); }
.btn-success { background: var(--clr-success); color: #fff; }
.btn-warn { background: var(--clr-warn); color: #fff; }
.btn-sm { padding: 5px 11px; font-size: 0.82rem; }
.btn-icon { padding: 7px 10px; }
.btn:disabled { opacity: .4; cursor: default; }

/* ─── Cards ──────────────────────────────────────────────── */
.card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: 0 1px 3px var(--clr-shadow);
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

/* ─── Progress Bar ───────────────────────────────────────── */
.progress-wrap { background: var(--clr-surface2); border-radius: 99px; height: 8px; overflow: hidden; margin-top: 8px; }
.progress-bar { height: 100%; border-radius: 99px; background: var(--clr-primary); transition: width 0.4s; }
.progress-bar.green { background: var(--clr-success); }

/* ─── Dashboard ──────────────────────────────────────────── */
.dash-hero {
  background: linear-gradient(135deg, var(--clr-primary) 0%, #7c3aed 100%);
  color: #fff;
  border-radius: var(--radius);
  padding: 28px;
  margin-bottom: 24px;
}
.dash-hero h1 { font-size: 1.5rem; margin-bottom: 6px; }
.dash-hero p { opacity: .9; font-size: 0.95rem; }
.exam-badges { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 14px; }
.exam-badge {
  background: rgba(255,255,255,0.2);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: var(--radius-sm);
  padding: 6px 14px;
  font-size: 0.85rem;
  font-weight: 600;
}

/* ─── Countdown ──────────────────────────────────────────── */
.countdown-banner {
  background: linear-gradient(135deg, #f59e0b 0%, #ef4444 100%);
  color: #fff;
  border-radius: var(--radius);
  padding: 18px 20px;
  margin-bottom: 24px;
  text-align: center;
  box-shadow: 0 2px 10px var(--clr-shadow);
}
.countdown-banner.urgent { animation: pulse-urgent 2s ease-in-out infinite; }
@keyframes pulse-urgent {
  0%, 100% { box-shadow: 0 2px 10px rgba(239,68,68,0.3); }
  50% { box-shadow: 0 4px 22px rgba(239,68,68,0.65); }
}
.countdown-title { font-size: 0.9rem; font-weight: 700; letter-spacing: .02em; opacity: .95; }
.countdown-clock { display: flex; justify-content: center; gap: 14px; margin: 10px 0 6px; flex-wrap: wrap; }
.cd-unit { display: flex; flex-direction: column; align-items: center; min-width: 56px; }
.cd-unit b { font-size: 1.9rem; font-weight: 800; line-height: 1; }
.cd-unit { font-size: 0.72rem; text-transform: uppercase; letter-spacing: .06em; }
.countdown-sub { font-size: 0.82rem; opacity: .9; }
@media (prefers-reduced-motion: reduce) {
  .countdown-banner.urgent { animation: none; }
}

.quiz-done-msg {
  margin-top: 10px;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--clr-success);
}

.welcome-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 24px;
  border: 1px solid var(--clr-border);
  background: linear-gradient(135deg, rgba(245,158,11,0.08), rgba(236,72,153,0.06));
}
.welcome-emoji { font-size: 2rem; line-height: 1; flex-shrink: 0; }

.section-heading { font-size: 1.1rem; font-weight: 700; margin: 24px 0 12px; }
.context-card {
  border-left: 4px solid;
  cursor: pointer;
  transition: box-shadow var(--transition);
}
.context-card:hover { box-shadow: 0 4px 12px var(--clr-shadow); }
.context-card-title { font-size: 1.05rem; font-weight: 700; display: flex; gap: 8px; align-items: center; }
.context-card-period { font-size: 0.82rem; color: var(--clr-text-muted); margin-bottom: 8px; }
.progress-label { display: flex; justify-content: space-between; font-size: 0.82rem; color: var(--clr-text-muted); margin-top: 10px; }

.tv-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 12px; }
.tv-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 16px;
  cursor: pointer;
  transition: box-shadow var(--transition);
}
.tv-card:hover { box-shadow: 0 4px 10px var(--clr-shadow); }
.tv-nr { font-size: 0.72rem; font-weight: 700; color: var(--clr-text-muted); text-transform: uppercase; letter-spacing: .06em; }
.tv-name { font-size: 0.95rem; font-weight: 700; margin: 2px 0; }
.tv-period { font-size: 0.8rem; color: var(--clr-text-muted); }

/* ─── Context Page ───────────────────────────────────────── */
.ctx-header { border-left: 5px solid; padding-left: 16px; margin-bottom: 24px; }
.ctx-header h1 { font-size: 1.5rem; }
.ctx-header p { color: var(--clr-text-muted); font-size: 0.9rem; }

.tabs { display: flex; gap: 4px; border-bottom: 2px solid var(--clr-border); margin-bottom: 20px; flex-wrap: wrap; }
.tab {
  padding: 8px 16px;
  font-size: 0.88rem;
  font-weight: 600;
  border: none;
  background: none;
  color: var(--clr-text-muted);
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: color var(--transition);
}
.tab.active { color: var(--clr-primary); border-bottom-color: var(--clr-primary); }
.tab:hover:not(.active) { color: var(--clr-text); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

.lq-list { counter-reset: lq; }
.lq-item { counter-increment: lq; display: flex; gap: 12px; margin-bottom: 10px; }
.lq-item::before {
  content: counter(lq);
  min-width: 26px; height: 26px;
  background: var(--clr-primary);
  color: #fff;
  border-radius: 50%;
  font-size: 0.78rem;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  margin-top: 2px;
}
.lq-text { font-size: 0.95rem; }

.summary-item { margin-bottom: 18px; }
.summary-q {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--clr-primary);
  margin-bottom: 6px;
}
.summary-text { font-size: 0.93rem; color: var(--clr-text); line-height: 1.7; }

/* Timeline */
.timeline { position: relative; padding-left: 28px; }
.timeline::before {
  content: '';
  position: absolute;
  left: 7px; top: 0; bottom: 0;
  width: 2px;
  background: var(--clr-border);
}
.tl-item { position: relative; margin-bottom: 18px; }
.tl-dot {
  position: absolute;
  left: -25px; top: 5px;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--clr-primary);
  border: 2px solid var(--clr-surface);
  box-shadow: 0 0 0 2px var(--clr-primary);
}
.tl-year { font-size: 0.8rem; font-weight: 700; color: var(--clr-primary); }
.tl-event { font-size: 0.93rem; }

/* Terms */
.term-list { display: flex; flex-direction: column; gap: 10px; }
.term-item {
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.term-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  cursor: pointer;
  font-weight: 700;
  font-size: 0.93rem;
  background: var(--clr-surface2);
}
.term-head:hover { background: var(--clr-border); }
.term-body {
  padding: 10px 14px;
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--clr-text);
  border-top: 1px solid var(--clr-border);
  display: none;
}
.term-body.open { display: block; }
.term-toggle { font-size: 0.8rem; color: var(--clr-text-muted); }

/* ─── Flashcards ─────────────────────────────────────────── */
.flash-controls { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 20px; align-items: center; }
.flash-controls select, .flash-controls input {
  padding: 7px 12px;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  background: var(--clr-surface);
  color: var(--clr-text);
  font: inherit;
  font-size: 0.88rem;
}
.flash-stats { font-size: 0.85rem; color: var(--clr-text-muted); margin-left: auto; }

.flashcard-area { display: flex; flex-direction: column; align-items: center; }
.flashcard {
  width: 100%;
  max-width: 540px;
  min-height: 220px;
  background: var(--clr-surface);
  border: 2px solid var(--clr-border);
  border-radius: var(--radius);
  cursor: pointer;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px 28px;
  text-align: center;
  perspective: 1200px;
  transition: box-shadow var(--transition);
  position: relative;
  user-select: none;
}
.flashcard:hover { box-shadow: 0 6px 20px var(--clr-shadow); }
.card-front, .card-back { width: 100%; }
.card-label { font-size: 0.75rem; font-weight: 700; color: var(--clr-text-muted); text-transform: uppercase; letter-spacing: .08em; margin-bottom: 12px; }
.card-term { font-size: 1.3rem; font-weight: 700; }
.card-def { font-size: 0.95rem; line-height: 1.65; }
.card-back { display: none; }
.flashcard.flipped .card-front { display: none; }
.flashcard.flipped .card-back { display: block; }
.flip-hint { font-size: 0.78rem; color: var(--clr-text-muted); margin-top: 12px; }

.flash-actions { display: flex; gap: 12px; margin-top: 18px; }
.flash-nav { display: flex; gap: 8px; margin-top: 14px; }
.flash-progress { font-size: 0.85rem; color: var(--clr-text-muted); margin-top: 10px; }

.flash-empty { text-align: center; color: var(--clr-text-muted); padding: 40px; font-size: 0.95rem; }

/* ─── Quiz ───────────────────────────────────────────────── */
.quiz-controls { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 20px; align-items: center; }
.quiz-controls select {
  padding: 7px 12px;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  background: var(--clr-surface);
  color: var(--clr-text);
  font: inherit;
  font-size: 0.88rem;
}
.quiz-controls select option { color: var(--clr-text); background: var(--clr-surface); }
.flash-controls select option { color: var(--clr-text); background: var(--clr-surface); }
.quiz-score-bar { background: var(--clr-surface2); border-radius: var(--radius-sm); padding: 12px 16px; margin-bottom: 18px; display: flex; gap: 18px; font-size: 0.9rem; }
.score-num { font-weight: 700; font-size: 1.1rem; }
.score-label { font-size: 0.78rem; color: var(--clr-text-muted); }

.quiz-q {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 14px;
}
.q-nr { font-size: 0.78rem; font-weight: 700; color: var(--clr-text-muted); text-transform: uppercase; margin-bottom: 6px; }
.q-ctx-tag {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 99px;
  margin-bottom: 10px;
  color: #fff;
}
.q-text { font-size: 0.98rem; font-weight: 600; margin-bottom: 14px; }

.mc-options { display: flex; flex-direction: column; gap: 8px; }
.mc-opt {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 14px;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.9rem;
  text-align: left;
  color: var(--clr-text);
  background: var(--clr-surface2);
  transition: background var(--transition), border-color var(--transition);
}
.mc-opt:disabled { opacity: 1; }
.opt-letter { color: var(--clr-text); }
.mc-opt:hover:not(.selected):not(.revealed) { background: var(--clr-border); }
.mc-opt.selected { border-color: var(--clr-primary); background: rgba(37, 99, 235, 0.08); }
.mc-opt.correct { border-color: var(--clr-success); background: rgba(22, 163, 74, 0.1); color: var(--clr-success); }
.mc-opt.wrong { border-color: var(--clr-danger); background: rgba(220, 38, 38, 0.08); color: var(--clr-danger); }
.opt-letter {
  min-width: 22px; height: 22px;
  border-radius: 50%;
  background: var(--clr-border);
  font-size: 0.78rem;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  margin-top: 1px;
}

.open-answer textarea {
  width: 100%;
  min-height: 90px;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: 10px;
  font: inherit;
  font-size: 0.9rem;
  background: var(--clr-surface2);
  color: var(--clr-text);
  resize: vertical;
}
.open-answer textarea:focus { outline: none; border-color: var(--clr-primary); }
.model-answer {
  margin-top: 12px;
  background: rgba(22, 163, 74, 0.07);
  border: 1px solid rgba(22, 163, 74, 0.25);
  border-radius: var(--radius-sm);
  padding: 12px;
  font-size: 0.88rem;
  line-height: 1.7;
  display: none;
}
.model-answer.open { display: block; }
.model-answer-label { font-weight: 700; color: var(--clr-success); font-size: 0.8rem; margin-bottom: 4px; }

.self-grade { margin-top: 12px; padding: 12px; background: var(--clr-surface2); border-radius: var(--radius-sm); }
.self-grade-label { display: block; font-size: 0.85rem; font-weight: 600; margin-bottom: 8px; }
.self-grade-btns { display: flex; gap: 8px; flex-wrap: wrap; }
.self-grade-result { margin-top: 12px; padding: 8px 12px; border-radius: var(--radius-sm); font-size: 0.85rem; font-weight: 600; }
.self-grade-result.correct { background: rgba(22,163,74,0.1); color: var(--clr-success); }
.self-grade-result.partial { background: rgba(217,119,6,0.1); color: var(--clr-warn); }
.self-grade-result.wrong { background: rgba(220,38,38,0.08); color: var(--clr-danger); }
.explain-box {
  margin-top: 10px;
  padding: 10px 12px;
  background: var(--clr-surface2);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  line-height: 1.65;
  display: none;
}
.explain-box.open { display: block; }

/* ─── Begrippenlijst ─────────────────────────────────────── */
.begrip-search-wrap { position: relative; margin-bottom: 16px; }
.begrip-search {
  width: 100%;
  padding: 10px 14px 10px 38px;
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  background: var(--clr-surface);
  color: var(--clr-text);
  font: inherit;
  font-size: 0.93rem;
}
.begrip-search:focus { outline: none; border-color: var(--clr-primary); }
.begrip-search-icon { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--clr-text-muted); }
.begrip-filters { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.filter-btn {
  padding: 5px 12px;
  border-radius: 99px;
  border: 1px solid var(--clr-border);
  background: var(--clr-surface2);
  color: var(--clr-text);
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition);
}
.filter-btn.active { background: var(--clr-primary); color: #fff; border-color: var(--clr-primary); }
.begrip-count { font-size: 0.82rem; color: var(--clr-text-muted); margin-bottom: 12px; }

.begrip-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; }
.begrip-table th { text-align: left; padding: 8px 12px; border-bottom: 2px solid var(--clr-border); font-size: 0.78rem; text-transform: uppercase; color: var(--clr-text-muted); }
.begrip-table td { padding: 10px 12px; border-bottom: 1px solid var(--clr-border); vertical-align: top; }
.begrip-table tr:hover td { background: var(--clr-surface2); }
.begrip-term { font-weight: 700; }
.begrip-source { font-size: 0.78rem; color: var(--clr-text-muted); }

/* ─── Tijdlijn overzicht ─────────────────────────────────── */
.global-tl { position: relative; margin-left: 80px; padding: 10px 0; }
.global-tl::before {
  content: '';
  position: absolute;
  left: -24px; top: 0; bottom: 0;
  width: 3px;
  background: var(--clr-border);
}
.gtl-item { position: relative; margin-bottom: 22px; }
.gtl-dot {
  position: absolute;
  left: -30px; top: 6px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--clr-surface);
  border: 3px solid var(--clr-primary);
}
.gtl-year {
  position: absolute;
  left: -84px; top: 4px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--clr-text-muted);
  white-space: nowrap;
}
.gtl-text { font-size: 0.9rem; }
.gtl-source { font-size: 0.75rem; color: var(--clr-text-muted); }

/* ─── Tijdvak page ───────────────────────────────────────── */
.tv-header { margin-bottom: 22px; }
.tv-header h1 { font-size: 1.3rem; }
.tv-header p { color: var(--clr-text-muted); font-size: 0.9rem; }

.ka-list { display: flex; flex-direction: column; gap: 12px; }
.ka-item {
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  overflow: hidden;
}
.ka-head {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 12px 16px;
  cursor: pointer;
}
.ka-head:hover { background: var(--clr-surface2); }
.ka-nr {
  min-width: 36px; height: 36px;
  background: var(--clr-primary);
  color: #fff;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.ka-text { font-size: 0.93rem; font-weight: 600; line-height: 1.5; }
.ka-body {
  padding: 0 16px 14px 64px;
  font-size: 0.88rem;
  line-height: 1.7;
  display: none;
}
.ka-body.open { display: block; }
.ka-example-label { font-weight: 700; color: var(--clr-text-muted); font-size: 0.78rem; text-transform: uppercase; margin-bottom: 4px; }

/* ─── Notice ─────────────────────────────────────────────── */
.notice {
  display: flex;
  gap: 10px;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  line-height: 1.5;
  margin-bottom: 16px;
}
.notice-warn { background: rgba(217, 119, 6, 0.1); border: 1px solid rgba(217, 119, 6, 0.3); color: var(--clr-warn); }
.notice-info { background: rgba(37, 99, 235, 0.07); border: 1px solid rgba(37, 99, 235, 0.2); color: var(--clr-primary); }

/* ─── Dark mode toggle ───────────────────────────────────── */
#dark-toggle {
  background: var(--clr-surface2);
  border: 1px solid var(--clr-border);
  border-radius: 99px;
  padding: 6px 12px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--clr-text);
  display: flex; gap: 6px; align-items: center;
}
#dark-toggle:hover { background: var(--clr-border); }

/* ─── Badge ──────────────────────────────────────────────── */
.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 7px;
  border-radius: 99px;
  vertical-align: middle;
}
.badge-know { background: rgba(22,163,74,0.15); color: var(--clr-success); }
.badge-learn { background: rgba(220,38,38,0.12); color: var(--clr-danger); }
.badge-new { background: var(--clr-surface2); color: var(--clr-text-muted); }

/* ─── Overlay sidebar (mobile) ───────────────────────────── */
#sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.4);
  z-index: 90;
}

/* ─── Responsive ─────────────────────────────────────────── */
@media (max-width: 768px) {
  #sidebar {
    transform: translateX(-100%);
  }
  #sidebar.open {
    transform: translateX(0);
  }
  #sidebar-overlay.open { display: block; }
  #main { margin-left: 0; }
  #menu-toggle { display: block; }
  #content { padding: 16px; }
  .card-grid { grid-template-columns: 1fr; }
  .tv-grid { grid-template-columns: 1fr 1fr; }
  .global-tl { margin-left: 60px; }
  .gtl-year { left: -66px; font-size: 0.75rem; }
  .flash-actions { flex-wrap: wrap; justify-content: center; }
}
@media (max-width: 480px) {
  .tv-grid { grid-template-columns: 1fr; }
  .tabs { gap: 0; }
  .tab { padding: 8px 10px; font-size: 0.82rem; }
}