/* ═══════════════════════════════════════════════════════════════
   Leerblad — futuristisch donker thema (leerling-weergave)
   Alle regels gelden alleen onder [data-theme="dark"]. Zonder dat
   attribuut valt de pagina terug op het lichte leerkracht-thema.
   ═══════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&display=swap');

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #05080f;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-2: rgba(255, 255, 255, 0.07);
  --border: rgba(255, 255, 255, 0.09);
  --border-strong: rgba(255, 255, 255, 0.16);
  --text: #e9eef8;
  --text-2: #9aa7bf;
  --text-3: #5d6a83;
  --text-soon: #3f4a60;
  --acc1: #4da9ff;
  --acc2: #3ce6b4;
  --acc-grad: linear-gradient(90deg, #4da9ff, #3ce6b4);
  --acc-soft: rgba(77, 169, 255, 0.12);
  --acc-border: rgba(77, 169, 255, 0.45);
  --acc-text: #7cc4ff;
  --glow-blue: 0 0 28px rgba(77, 169, 255, 0.25);
  --glow-green: 0 6px 28px rgba(60, 230, 180, 0.28);
  --font-display: 'Space Grotesk', 'Inter', sans-serif;
}

/* ── Basis ── */
[data-theme="dark"] body {
  background:
    radial-gradient(ellipse 900px 600px at 12% -8%, rgba(45, 111, 212, 0.16), transparent 60%),
    radial-gradient(ellipse 800px 550px at 92% 110%, rgba(45, 191, 142, 0.11), transparent 60%),
    radial-gradient(ellipse 600px 400px at 75% 20%, rgba(120, 80, 255, 0.07), transparent 65%),
    var(--bg);
  background-attachment: fixed;
  color: var(--text);
}

/* subtiel raster over de achtergrond */
[data-theme="dark"] body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 0%, #000 30%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 50% 0%, #000 30%, transparent 100%);
  pointer-events: none;
}

[data-theme="dark"] ::selection { background: rgba(77, 169, 255, 0.35); color: #fff; }

[data-theme="dark"] h1,
[data-theme="dark"] h2,
[data-theme="dark"] h3,
[data-theme="dark"] .section-title,
[data-theme="dark"] .page-title,
[data-theme="dark"] .output-title,
[data-theme="dark"] .module-title,
[data-theme="dark"] .result-title,
[data-theme="dark"] .ov-title,
[data-theme="dark"] .hero-text h1 {
  font-family: var(--font-display);
}

/* ── Topbar: donker glas ── */
[data-theme="dark"] .topbar {
  background: rgba(6, 10, 18, 0.72);
  backdrop-filter: blur(18px) saturate(1.4);
  -webkit-backdrop-filter: blur(18px) saturate(1.4);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}
/* Logo bewust NIET aangepast in donker: exact gelijk aan de lichte weergave
   (zelfde font, dikte, letterafstand en kleurverloop). */

[data-theme="dark"] .nav-btn { color: var(--text-2); font-family: var(--font-display); font-weight: 400; }
[data-theme="dark"] .nav-btn:hover,
[data-theme="dark"] .nav-dropdown:hover > .nav-btn {
  background: var(--acc-grad);
  color: #04121c;
  box-shadow: var(--glow-blue);
}
[data-theme="dark"] .nav-btn.active { background: var(--acc-soft); color: var(--acc-text); box-shadow: inset 0 0 0 1px rgba(77, 169, 255, 0.3); }
[data-theme="dark"] .nav-btn.active:hover { background: var(--acc-grad); color: #04121c; }
[data-theme="dark"] .nav-btn.soon { color: var(--text-soon); }
[data-theme="dark"] .nav-btn:not(:hover) .tag { background: rgba(255, 255, 255, 0.06); color: var(--text-3); }
[data-theme="dark"] .nav-btn:hover .tag { background: rgba(0, 0, 0, 0.18); color: inherit; }

[data-theme="dark"] .nav-dropdown-menu-inner {
  background: rgba(10, 15, 26, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.55), var(--glow-blue);
}
[data-theme="dark"] .nav-dropdown-item { color: var(--text-2); }
[data-theme="dark"] .nav-dropdown-item:hover { background: var(--acc-soft); color: var(--acc-text); }
[data-theme="dark"] .nav-dropdown-item.soon { color: var(--text-soon); }
[data-theme="dark"] .nav-dropdown-item.soon .tag { background: rgba(255, 255, 255, 0.05); color: var(--text-soon); }

/* ── Typografie ── */
[data-theme="dark"] .section-title,
[data-theme="dark"] .page-title { color: var(--text); font-weight: 500; letter-spacing: -0.3px; }
[data-theme="dark"] .section-sub,
[data-theme="dark"] .page-sub { color: var(--text-3); }
[data-theme="dark"] .modules-label { color: var(--text-2); }

/* ── Hero (index) ── */
[data-theme="dark"] .hero-text h1 { color: var(--text); font-weight: 500; letter-spacing: -0.5px; }
[data-theme="dark"] .hero-text h1 span {
  background: var(--acc-grad);
  -webkit-background-clip: text;
  background-clip: text;
  filter: drop-shadow(0 0 18px rgba(60, 230, 180, 0.3));
}
[data-theme="dark"] .hero-text p { color: var(--text-2); }
[data-theme="dark"] .hero-img {
  border: 1px solid var(--border-strong);
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.5), var(--glow-blue);
}

/* ── Kaarten ── */
[data-theme="dark"] .module-card,
[data-theme="dark"] .card,
[data-theme="dark"] .output-area,
[data-theme="dark"] .settings-bar,
[data-theme="dark"] .question-box,
[data-theme="dark"] .result-box {
  background: var(--surface);
  border: 1px solid var(--border);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}
[data-theme="dark"] .module-card.active { border-color: rgba(77, 169, 255, 0.35); }
[data-theme="dark"] .module-card.active:hover {
  border-color: var(--acc-border);
  box-shadow: var(--glow-blue);
  background: var(--surface-2);
  transform: translateY(-3px);
}
[data-theme="dark"] .module-card.soon { opacity: 0.45; }
[data-theme="dark"] .module-title { color: var(--text); font-weight: 500; }
[data-theme="dark"] .module-desc { color: var(--text-2); }
[data-theme="dark"] .module-card.active .module-tag,
[data-theme="dark"] .module-tag { background: var(--acc-soft); color: var(--acc-text); border: 1px solid rgba(77, 169, 255, 0.25); }
[data-theme="dark"] .module-card.soon .module-tag { background: rgba(255, 255, 255, 0.05); color: var(--text-soon); border-color: transparent; }

[data-theme="dark"] .card-label { color: var(--acc2); text-shadow: 0 0 12px rgba(60, 230, 180, 0.35); }
[data-theme="dark"] .step-hint { color: var(--text-3); }

/* ── Keuzeknoppen (opt / groep / tafel / aantal / chip / sub / alle) ── */
[data-theme="dark"] .opt,
[data-theme="dark"] .alle-btn,
[data-theme="dark"] .aantal-btn,
[data-theme="dark"] .groep-btn,
[data-theme="dark"] .sub-btn,
[data-theme="dark"] .action-btn,
[data-theme="dark"] .chip,
[data-theme="dark"] .tafel-item label {
  background: rgba(255, 255, 255, 0.045);
  border: 1px solid var(--border);
  color: var(--text-2);
}
[data-theme="dark"] .opt:hover,
[data-theme="dark"] .alle-btn:hover,
[data-theme="dark"] .aantal-btn:hover,
[data-theme="dark"] .groep-btn:hover,
[data-theme="dark"] .sub-btn:hover,
[data-theme="dark"] .action-btn:hover,
[data-theme="dark"] .chip:hover,
[data-theme="dark"] .tafel-item label:hover {
  border-color: var(--acc-border);
  color: var(--acc-text);
  background: var(--acc-soft);
  box-shadow: 0 0 16px rgba(77, 169, 255, 0.18);
}
[data-theme="dark"] .opt.active,
[data-theme="dark"] .alle-btn.active,
[data-theme="dark"] .aantal-btn.active,
[data-theme="dark"] .chip.active,
[data-theme="dark"] .tafel-item input:checked + label {
  border-color: var(--acc-border);
  background: var(--acc-soft);
  color: var(--acc-text);
  box-shadow: 0 0 16px rgba(77, 169, 255, 0.22), inset 0 0 12px rgba(77, 169, 255, 0.08);
}
[data-theme="dark"] .groep-btn.active,
[data-theme="dark"] .sub-btn.active {
  background: var(--acc-grad);
  border-color: transparent;
  color: #04121c;
  box-shadow: var(--glow-blue);
}
[data-theme="dark"] .aantal-label { color: var(--text-3); }

/* ── Primaire knoppen ── */
[data-theme="dark"] .generate-btn,
[data-theme="dark"] .start-btn,
[data-theme="dark"] .action-btn.primary {
  background: var(--acc-grad);
  color: #04121c;
  font-weight: 600;
  box-shadow: var(--glow-green);
}
[data-theme="dark"] .generate-btn:hover,
[data-theme="dark"] .start-btn:hover,
[data-theme="dark"] .action-btn.primary:hover {
  opacity: 1;
  box-shadow: 0 6px 36px rgba(60, 230, 180, 0.45), 0 0 20px rgba(77, 169, 255, 0.3);
  transform: translateY(-2px);
}
[data-theme="dark"] .generate-btn:disabled { box-shadow: none; }

/* ── Output / lijsten ── */
[data-theme="dark"] .output-title { color: var(--text); font-weight: 500; }
[data-theme="dark"] .output-instr { color: var(--text-3); }
[data-theme="dark"] .zinnen-list li { border-bottom-color: rgba(255, 255, 255, 0.06); color: var(--text); }
[data-theme="dark"] .nr { color: var(--text-soon); }
[data-theme="dark"] .som-item { border-bottom-color: rgba(255, 255, 255, 0.07); color: var(--text); }
[data-theme="dark"] .som-item span { border-bottom-color: rgba(255, 255, 255, 0.3) !important; }

/* ── Info & status ── */
[data-theme="dark"] .info-box {
  background: var(--acc-soft);
  border: 1px solid rgba(77, 169, 255, 0.3);
  color: var(--acc-text);
}
[data-theme="dark"] .loading-text { color: var(--acc-text); }
[data-theme="dark"] .soon-placeholder { color: var(--text-soon); }
[data-theme="dark"] #groep-info {
  background: var(--surface) !important;
  border: 1px solid var(--border) !important;
  color: var(--text-2) !important;
}
[data-theme="dark"] #kiesMsg { color: var(--text-3) !important; }

/* ── Spellen ── */
[data-theme="dark"] .settings-label { color: var(--text-3); }
[data-theme="dark"] .score-label,
[data-theme="dark"] .question-lbl { color: var(--text-3); }
[data-theme="dark"] .score-val { color: var(--text); }
[data-theme="dark"] .score-val.moves { color: var(--acc-text); }
[data-theme="dark"] .question-txt {
  background: var(--acc-grad);
  -webkit-background-clip: text;
  background-clip: text;
  filter: drop-shadow(0 0 12px rgba(77, 169, 255, 0.35));
}
[data-theme="dark"] .canvas-wrap {
  border: 1px solid var(--border-strong);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.55), var(--glow-blue);
}
[data-theme="dark"] .result-overlay { background: rgba(4, 6, 12, 0.8); }
[data-theme="dark"] .result-box { box-shadow: 0 24px 64px rgba(0, 0, 0, 0.6), var(--glow-blue); background: rgba(10, 15, 26, 0.92); }
[data-theme="dark"] .result-sub { color: var(--text-2); }
[data-theme="dark"] .card-back { box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4); }
[data-theme="dark"] .card-front { box-shadow: 0 2px 10px rgba(0, 0, 0, 0.45); }
[data-theme="dark"] .card-wrap.matched .card-front { box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.85), 0 0 18px rgba(77, 169, 255, 0.4); }

/* ── Footer (zelfde maten als de lichte variant in role.js; alleen kleur/rand verschillen) ── */
[data-theme="dark"] footer {
  background: transparent !important;
  border-top: 1px solid rgba(255, 255, 255, 0.06) !important;
  color: var(--text-soon) !important;
  text-align: center !important;
  padding: 1.15rem 0 !important;
  margin: 0 !important;
  font-size: 12px !important;
}

/* ── Focus & scrollbar ── */
[data-theme="dark"] :focus-visible { outline: 2px solid var(--acc1); outline-offset: 2px; }
[data-theme="dark"] ::-webkit-scrollbar { width: 10px; height: 10px; }
[data-theme="dark"] ::-webkit-scrollbar-track { background: transparent; }
[data-theme="dark"] ::-webkit-scrollbar-thumb { background: rgba(255, 255, 255, 0.12); border-radius: 6px; }
[data-theme="dark"] ::-webkit-scrollbar-thumb:hover { background: rgba(255, 255, 255, 0.2); }