/**
 * Licencja pilota turystycznego PPL(A): Module Shell CSS (Etap 21, Runda 6)
 *
 * Cel:
 *   Wyciągnięcie zduplikowanego CSS z 12 modułów quizowych. Każdy moduł
 *   miał identyczne ~250 linii CSS (poza 3 zmiennymi kolorów). Po refaktorze:
 *   1. Każdy moduł HTML ma tylko 3 inline CSS variables (--primary, --accent,
 *      --accent-rgba) + link do tego pliku.
 *   2. Reszta stylowania jest tutaj: single source of truth.
 *
 * Wymaga zdefiniowanych w :root kolorów w każdym module HTML:
 *   --primary, --accent, --accent-rgba
 *
 * (Plus standardowe --bg/--ink/--surface z theme-toggle.js i pochodne.)
 *
 * NIE zawiera quiz-engine.css, to osobny plik dla quiz UI.
 */

:root {
  /* Standardowe kolory bazowe: takie same we wszystkich modułach */
  --bg: #0A0E13;
  --bg-elev: #0F141B;
  --surface: #131922;
  --surface-2: #1B232F;
  --surface-3: #232D3C;
  --line: #202A38;
  --line-strong: #2D3A4B;
  --ink: #F3EFE6;
  --ink-dim: #9FAAB8;
  --ink-muted: #7F8B99;
  --gold: #F4B740;
  --green: #4AC68A;
  --red: #E5765A;
  --radius: 16px; --radius-lg: 24px; --radius-sm: 10px;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; margin: 0; padding: 0; }
html, body {
  background: var(--bg); color: var(--ink);
  font-family: 'Bricolage Grotesque', ui-sans-serif, system-ui, sans-serif;
  -webkit-font-smoothing: antialiased; min-height: 100svh;
  overscroll-behavior-y: none;
}
body::before {
  content: ""; position: fixed; inset: 0; z-index: 0;
  background: radial-gradient(90% 60% at 50% -10%, rgba(var(--accent-rgba),0.10), transparent 60%);
  pointer-events: none;
}
.app {
  position: relative; z-index: 1;
  max-width: 600px; margin: 0 auto;
  min-height: 100svh;
  padding:
    calc(var(--safe-top) + 18px) calc(var(--safe-right) + 18px)
    calc(var(--safe-bottom) + 24px) calc(var(--safe-left) + 18px);
}
@keyframes fadeInUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.breadcrumb {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 12px; color: var(--ink-muted);
  font-family: 'JetBrains Mono', monospace; letter-spacing: 0.06em;
  text-decoration: none; margin-bottom: 22px;
  padding: 6px 10px; border-radius: 8px;
  background: var(--surface); border: 1px solid var(--line);
  transition: all .2s var(--ease);
  cursor: pointer;
}
.breadcrumb:hover { color: var(--ink); border-color: var(--line-strong); }
.breadcrumb:active { transform: scale(.97); }
.breadcrumb svg { width: 14px; height: 14px; }
/* === MODULE TOPBAR (Etap 12: link do Postępów obecny w każdym module) === */
.module-topbar {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; margin-bottom: 22px;
}
.module-topbar .breadcrumb { margin-bottom: 0; }
.module-topbar .topbar-action {
  width: 36px; height: 36px; min-height: 44px;
  border-radius: 10px;
  background: var(--surface); border: 1px solid var(--line);
  display: grid; place-items: center; cursor: pointer;
  transition: all .15s var(--ease); color: var(--ink-dim);
  text-decoration: none; flex-shrink: 0;
}
.module-topbar .topbar-action:hover { background: var(--surface-2); color: var(--ink); border-color: var(--line-strong); }
.module-topbar .topbar-action svg { width: 18px; height: 18px; }

.header {
  display: flex; align-items: center; gap: 14px; margin-bottom: 8px;
  animation: fadeInUp .5s var(--ease-out);
}
.header-icon {
  width: 52px; height: 52px; border-radius: 15px;
  background: rgba(var(--accent-rgba), 0.12);
  border: 1px solid rgba(var(--accent-rgba), 0.25);
  display: grid; place-items: center;
  font-size: 24px; font-weight: 700; flex-shrink: 0;
  font-family: 'JetBrains Mono', monospace; color: var(--accent);
  letter-spacing: -0.02em;
}
h1 {
  font-size: clamp(22px, 5.5vw, 30px); font-weight: 700;
  letter-spacing: -0.02em; line-height: 1.1;
}
.lead {
  color: var(--ink-dim); font-size: 14px; line-height: 1.55;
  margin-bottom: 24px; max-width: 54ch;
  animation: fadeInUp .5s .05s var(--ease-out) backwards;
}
.lead b { color: var(--ink); font-weight: 600; }

.stats-bar {
  display: flex; gap: 8px; margin-bottom: 22px;
  animation: fadeInUp .5s .1s var(--ease-out) backwards;
}
.stat-pill {
  flex: 1; padding: 12px 10px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 12px;
  display: flex; flex-direction: column;
  align-items: flex-start; gap: 4px;
}
.stat-pill-label {
  font-size: 11px; color: var(--ink-muted);
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.1em; text-transform: uppercase;
}
.stat-pill-value {
  font-size: 18px; font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}
.stat-pill-value.accent { color: var(--accent); }
.stat-pill-value.green  { color: var(--green); }

.section-title {
  font-size: 11px; font-weight: 700;
  color: var(--ink-muted);
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.16em; text-transform: uppercase;
  margin: 8px 0 10px;
}

.difficulty-row {
  display: flex; gap: 6px; flex-wrap: wrap;
  margin-bottom: 18px;
  animation: fadeInUp .5s .15s var(--ease-out) backwards;
}
.diff-btn {
  padding: 8px 14px; min-height: 44px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--ink-dim); font-size: 13px; font-weight: 500;
  cursor: pointer; font-family: inherit;
  transition: all .15s var(--ease);
}
.diff-btn:hover { color: var(--ink); border-color: var(--line-strong); }
.diff-btn[aria-pressed="true"] {
  background: rgba(var(--accent-rgba), 0.15);
  color: var(--accent);
  border-color: rgba(var(--accent-rgba), 0.4);
}

.categories {
  display: flex; flex-direction: column; gap: 8px;
  margin-bottom: 18px;
}
.category {
  display: flex; align-items: center; gap: 14px;
  padding: 14px 16px; min-height: 60px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 14px;
  cursor: pointer; text-align: left;
  font-family: inherit; color: inherit;
  transition: all .15s var(--ease);
  animation: fadeInUp .5s var(--ease-out) backwards;
  width: 100%;
}
.category:nth-child(1) { animation-delay: .15s; }
.category:nth-child(2) { animation-delay: .2s; }
.category:nth-child(3) { animation-delay: .25s; }
.category:nth-child(4) { animation-delay: .3s; }
.category:nth-child(5) { animation-delay: .35s; }
.category:nth-child(6) { animation-delay: .4s; }
.category:hover {
  border-color: rgba(var(--accent-rgba), 0.4);
  background: var(--surface-2);
  transform: translateX(2px);
}
.category:active { transform: scale(.99); }
.category[data-mode="mixed"] {
  background: linear-gradient(135deg, rgba(var(--accent-rgba), 0.08), var(--surface));
  border-color: rgba(var(--accent-rgba), 0.25);
}
.category-emoji {
  font-size: 24px; flex-shrink: 0;
  display: grid; place-items: center;
  width: 40px; height: 40px;
  border-radius: 10px;
  background: rgba(var(--accent-rgba), 0.10);
}
.category-text { flex: 1; min-width: 0; }
.category-name {
  display: block;
  font-size: 14px; font-weight: 600;
  color: var(--ink); margin-bottom: 2px;
  letter-spacing: -0.01em;
}
.category-meta {
  display: block;
  font-size: 12px; color: var(--ink-muted);
  line-height: 1.4;
}
.category-arrow {
  color: var(--ink-muted); flex-shrink: 0;
  transition: color .15s var(--ease), transform .15s var(--ease);
}
.category:hover .category-arrow {
  color: var(--accent); transform: translateX(2px);
}

.session-info {
  margin-top: 8px; padding: 10px 14px;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: 10px;
  font-size: 12px; color: var(--ink-muted);
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: 0.04em;
}
.session-info b { color: var(--ink-dim); }

.quiz-wrap {
  animation: fadeInUp .35s var(--ease-out);
}

/* === RESPONSIVE BREAKPOINTS === */
@media (min-width: 768px) {
  .app { max-width: 720px; }
  h1 { font-size: clamp(26px, 4vw, 34px); }
  .lead { font-size: 15px; max-width: 56ch; }
}
@media (min-width: 1024px) {
  .app { max-width: 960px; }
  h1 { font-size: 36px; }
  .lead { font-size: 16px; max-width: 60ch; }
}
@media (min-width: 1280px) { .app { max-width: 1100px; } }