/* Ambiance : noir profond, violet, touche rétro-futuriste (grille en
   perspective, libellés en police mono) — sans effets superflus. */
:root {
  color-scheme: dark;
  --bg: #09080d;
  --surface: #121019;
  --surface-2: #17141f;
  --text: #ece9f5;
  --muted: #c9c3dc;
  --line: #262233;
  --accent: #c4b5fd;
  --accent-strong: #7c3aed;
  --accent-soft: rgba(167, 139, 250, 0.08);
  --accent-line: rgba(167, 139, 250, 0.4);
  --grid: rgba(167, 139, 250, 0.22);
  --glow: rgba(124, 58, 237, 0.22);
  --btn-glow: rgba(124, 58, 237, 0.4);
  --header-bg: rgba(9, 8, 13, 0.85);
  --band: rgba(124, 58, 237, 0.12);
  --todo-bg: #3a2f00;
  --todo-text: #ffe08a;
  --radius: 10px;
  --max: 1080px;
  --mono: ui-monospace, "JetBrains Mono", "SF Mono", "Cascadia Code", Consolas, monospace;
}

/* Pages tracelia : palette de l'application (lib/core/theme/app_theme.dart)
   — fond crème, bleu canard. */
body.theme-tracelia {
  color-scheme: light;
  --bg: #f7f5f1;
  --surface: #ffffff;
  --surface-2: #faf8f5;
  --text: #1d1a15;
  --muted: #66635d;
  --line: #e1ded7;
  --accent: #007a7b;
  --accent-strong: #007a7b;
  --accent-soft: #d1f3f2;
  --accent-line: rgba(0, 122, 123, 0.4);
  --grid: rgba(0, 122, 123, 0.14);
  --glow: rgba(0, 122, 123, 0.12);
  --btn-glow: rgba(0, 122, 123, 0.18);
  --header-bg: rgba(247, 245, 241, 0.9);
  --band: rgba(0, 122, 123, 0.08);
  --todo-bg: #fee3c5;
  --todo-text: #915200;
}
body.theme-tracelia .notice { color: #005556; }

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 17px;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
}

a { color: var(--accent); }

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

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.narrow { max-width: 760px; }

/* En-tête */
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: var(--header-bg);
  backdrop-filter: blur(8px);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px 16px;
  min-height: 64px;
  flex-wrap: wrap;
}
.brand {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.brand span { color: var(--accent); }
.site-header nav { display: flex; gap: 6px 20px; flex-wrap: wrap; }
.site-header nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.92rem;
}
.site-header nav a:hover, .site-header nav a[aria-current] { color: var(--accent); }

/* Sections */
.hero {
  position: relative;
  padding: 104px 0 96px;
  overflow: hidden;
}
/* Grille en perspective qui s'efface vers le haut. */
.hero::before {
  content: "";
  position: absolute;
  left: -50%;
  right: -50%;
  bottom: -20%;
  height: 90%;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 56px 56px;
  transform: perspective(420px) rotateX(62deg);
  transform-origin: bottom;
  -webkit-mask-image: linear-gradient(to top, #000 10%, transparent 75%);
  mask-image: linear-gradient(to top, #000 10%, transparent 75%);
  pointer-events: none;
}
/* Halo violet discret derrière le titre. */
.hero::after {
  content: "";
  position: absolute;
  top: -30%;
  left: 50%;
  width: 720px;
  height: 480px;
  transform: translateX(-50%);
  background: radial-gradient(closest-side, var(--glow), transparent);
  pointer-events: none;
}
.hero .wrap { position: relative; z-index: 1; }

.eyebrow {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.eyebrow::before { content: "// "; opacity: 0.6; }
h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin: 0 0 22px;
  max-width: 820px;
}
h2 {
  font-size: 1.6rem;
  letter-spacing: -0.01em;
  line-height: 1.25;
  margin: 0 0 16px;
}
h3 { font-size: 1.08rem; margin: 0 0 8px; }
.lead { font-size: 1.15rem; color: var(--muted); max-width: 640px; }

/* Chapitres : filet dégradé en tête et un fond teinté une section sur deux. */
section.block { position: relative; padding: 72px 0; }
section.block::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-strong), transparent);
  opacity: 0.7;
}
section.block:nth-of-type(even) {
  background: linear-gradient(180deg, var(--band), transparent 85%);
}

.btn {
  display: inline-block;
  padding: 11px 22px;
  border-radius: 6px;
  background: var(--accent-strong);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.95rem;
  margin: 10px 12px 0 0;
  border: 1px solid var(--accent-strong);
  box-shadow: 0 0 24px var(--btn-glow);
  transition: box-shadow 0.2s, background 0.2s;
}
.btn:hover { box-shadow: 0 0 36px var(--btn-glow); }
.btn.ghost {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent-line);
  box-shadow: none;
}
.btn.ghost:hover { background: var(--accent-soft); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-top: 28px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 0.2s;
}
.card:hover { border-color: var(--accent-line); }
.card p { margin: 0; color: var(--muted); font-size: 0.96rem; }

.app-feature {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 16px;
  align-items: stretch;
}
@media (max-width: 760px) {
  .app-feature { grid-template-columns: 1fr; }
}
.app-panel {
  background: var(--surface-2);
  border: 1px dashed var(--accent-line);
  border-radius: var(--radius);
  padding: 24px;
}
.app-panel ul { margin: 0; padding-left: 20px; }
.app-panel li { margin: 6px 0; }
.app-panel li::marker { color: var(--accent); }
.app-panel h3 { margin-bottom: 8px; }
.app-panel p { margin: 0 0 12px; color: var(--muted); }

.step {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: 10px;
}
.step::before { content: "0"; }

.links-list { list-style: none; padding: 0; margin: 16px 0 0; }
.links-list li { margin: 8px 0; }

.meta { color: var(--muted); font-size: 0.9rem; }

/* Pages légales */
.doc { padding: 56px 0 80px; }
.doc h2 {
  font-size: 1.25rem;
  margin-top: 2.4rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--line);
}
.doc table { width: 100%; border-collapse: collapse; margin: 12px 0; font-size: 0.95rem; }
.doc th, .doc td {
  text-align: left;
  vertical-align: top;
  padding: 10px 12px;
  border-bottom: 1px solid var(--line);
}
.doc th {
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.table-scroll { overflow-x: auto; }

/* Valeurs à compléter avant mise en ligne — repérables visuellement. */
.todo {
  background: var(--todo-bg);
  color: var(--todo-text);
  border-radius: 4px;
  padding: 0 4px;
  font-weight: 600;
}

.notice {
  background: var(--accent-soft);
  border-left: 3px solid var(--accent);
  border-radius: 6px;
  padding: 16px 20px;
  margin: 20px 0;
}

/* Pied de page */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 32px 0 44px;
  color: var(--muted);
  font-size: 0.85rem;
}
.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.site-footer > .wrap > span { font-family: var(--mono); }
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--accent); }
.site-footer nav { display: flex; gap: 8px 18px; flex-wrap: wrap; }