/* ============================================================================
   DESIGN « NUIT ÉLECTRIQUE »
   Fond bleu nuit, bleu électrique et cyan pour l'identité, rouge pour l'action.
   Mélange de trois pistes :
     E — nuit, grille réseau en fond, nom en dégradé ;
     F — halo coloré derrière l'accueil, cartes à bandeau et icône ;
     G — terminal sur l'accueil, étiquettes en police mono.
   Les noms de classes sont ceux que génère js/site.js.
   ========================================================================== */

:root {
  --bg: #070B1F;
  --panel: rgba(255, 255, 255, .035);
  --panel-2: rgba(255, 255, 255, .06);
  --line: rgba(148, 163, 184, .14);
  --line-strong: rgba(148, 163, 184, .3);
  --ink: #F8FAFC;            /* titres */
  --text: #CBD5E1;           /* texte courant */
  --muted: #8B9AB4;
  --blue: #3B82F6;
  --blue-light: #60A5FA;
  --cyan: #22D3EE;
  --cyan-light: #A5F3FC;
  --red: #E11D48;
  --red-light: #FB7185;
  --radius: 14px;
  --max: 1080px;
  --prose: 70ch;
  --font: 'Inter', system-ui, sans-serif;
  --display: 'Space Grotesk', 'Inter', system-ui, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, monospace;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; background: var(--bg); }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.75 var(--font);
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  position: relative;
  isolation: isolate;
}
::selection { background: rgba(34, 211, 238, .3); color: var(--ink); }

/* Grille « réseau » qui s'efface vers le bas */
body::before {
  content: ''; position: fixed; inset: 0; z-index: -1; pointer-events: none;
  background-image:
    linear-gradient(rgba(148, 163, 184, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, .07) 1px, transparent 1px);
  background-size: 44px 44px;
  -webkit-mask-image: radial-gradient(ellipse 85% 65% at 50% 0%, #000 25%, transparent 75%);
          mask-image: radial-gradient(ellipse 85% 65% at 50% 0%, #000 25%, transparent 75%);
}
/* Halos de couleur fixes */
body::after {
  content: ''; position: fixed; inset: 0; z-index: -2; pointer-events: none;
  background:
    radial-gradient(900px 520px at 88% -12%, rgba(37, 99, 235, .38), transparent 62%),
    radial-gradient(720px 440px at -12% 108%, rgba(225, 29, 72, .17), transparent 62%),
    radial-gradient(620px 420px at 55% 120%, rgba(34, 211, 238, .10), transparent 62%);
}

#page { flex: 1; }
h1, h2, h3, h4 { line-height: 1.2; letter-spacing: -.02em; margin: 0; color: var(--ink); }
a { color: var(--cyan); }
img { max-width: 100%; }
.wrap { max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.muted { color: var(--muted); }

/* --- Accessibilité ------------------------------------------------------ */
.skip-link {
  position: absolute; left: 12px; top: -60px; z-index: 30;
  background: var(--cyan); color: #04122B; padding: 8px 14px; border-radius: 8px; font-weight: 600;
}
.skip-link:focus { top: 8px; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 3px; border-radius: 4px; }
#page:focus { outline: none; }

/* --- Mode édition (local uniquement) ------------------------------------ */
.edit-banner {
  position: relative; z-index: 21;
  background: #F59E0B; color: #1C1302; text-align: center;
  font: 500 12px var(--mono); padding: 7px 12px;
}
.edit-banner a { color: inherit; font-weight: 700; margin-left: 6px; }
.edit-banner-live { background: #38BDF8; color: #04122B; }
.md-consigne {
  display: block; margin: 12px 0 20px; padding: 14px 18px;
  background: rgba(245, 158, 11, .07); border: 1px dashed rgba(245, 158, 11, .55); border-radius: 10px;
  color: #FCD34D; font-size: 14px; line-height: 1.6;
}
.md-consigne::before {
  content: 'Consigne — invisible en ligne'; display: block;
  font: 600 11px var(--mono); text-transform: uppercase; letter-spacing: .06em;
  margin-bottom: 6px; opacity: .8;
}
.a-ecrire {
  margin: 16px 0; padding: 14px 18px; border-radius: 10px;
  background: rgba(245, 158, 11, .12); border: 1px solid rgba(245, 158, 11, .4);
  color: #FDE68A; font-size: 15px;
}
.a-ecrire code { background: rgba(0, 0, 0, .25) !important; color: #FDE68A !important; }
.tag-draft { background: rgba(245, 158, 11, .14) !important; color: #FCD34D !important; }

/* --- En-tête ------------------------------------------------------------ */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: rgba(7, 11, 31, .72);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
          backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; gap: 24px; height: 68px; }
.brand {
  display: inline-flex; align-items: center; gap: 10px;
  font: 600 16px var(--display); color: var(--ink); text-decoration: none; letter-spacing: -.01em;
}
.brand-mark {
  display: grid; place-items: center; width: 34px; height: 34px; border-radius: 10px;
  background: linear-gradient(135deg, var(--blue), var(--cyan));
  color: #04122B; font: 700 13px var(--display); letter-spacing: 0;
  box-shadow: 0 6px 20px -6px rgba(34, 211, 238, .7);
}
.site-nav { display: flex; gap: 2px; margin-left: auto; }
.site-nav a {
  position: relative; padding: 8px 14px; border-radius: 8px;
  color: var(--muted); text-decoration: none; font-size: 15px; font-weight: 500;
  transition: color .15s, background .15s;
}
.site-nav a:hover { color: var(--ink); background: var(--panel-2); }
.site-nav a[aria-current="page"] { color: var(--ink); }
.site-nav a[aria-current="page"]::after {
  content: ''; position: absolute; left: 14px; right: 14px; bottom: 1px; height: 2px; border-radius: 2px;
  background: linear-gradient(90deg, var(--blue-light), var(--cyan));
}
.nav-cours {
  display: inline-flex; align-items: center; padding: 8px 16px; border-radius: 999px;
  font-size: 14px; font-weight: 600; background: var(--red); color: #fff;
  text-decoration: none; white-space: nowrap;
  box-shadow: 0 8px 24px -8px rgba(225, 29, 72, .75);
  transition: transform .15s, box-shadow .15s;
}
.nav-cours:hover { transform: translateY(-1px); box-shadow: 0 12px 28px -6px rgba(225, 29, 72, .9); }

/* --- Pied de page ------------------------------------------------------- */
.site-footer {
  border-top: 1px solid var(--line); margin-top: 96px; padding: 28px 0;
  font: 13px var(--mono); color: var(--muted); background: rgba(2, 6, 23, .45);
}
.footer-inner { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--cyan); }

/* --- Boutons ------------------------------------------------------------ */
.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 30px; }
.btn {
  display: inline-flex; align-items: center; gap: 8px; padding: 11px 20px; border-radius: 10px;
  border: 1px solid var(--line-strong); color: var(--ink); background: rgba(255, 255, 255, .03);
  text-decoration: none; font-weight: 600; font-size: 15px;
  transition: border-color .15s, background .15s, transform .15s, box-shadow .15s;
}
.btn:hover { border-color: var(--cyan); background: rgba(34, 211, 238, .07); transform: translateY(-1px); }
.btn-primary {
  background: var(--red); border-color: transparent; color: #fff;
  box-shadow: 0 10px 30px -10px rgba(225, 29, 72, .85);
}
.btn-primary:hover { background: var(--red); border-color: transparent; box-shadow: 0 14px 34px -8px rgba(225, 29, 72, 1); }

/* --- Accueil ------------------------------------------------------------ */
.hero {
  position: relative;
  display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
  gap: 56px; align-items: center;
  padding-top: 92px; padding-bottom: 76px;
}
/* Halo de F derrière le terminal */
.hero::before {
  content: ''; position: absolute; z-index: -1; pointer-events: none;
  right: 0; top: -6%; width: min(640px, 100%); height: 115%;
  background:
    radial-gradient(closest-side at 55% 45%, rgba(37, 99, 235, .55), rgba(14, 165, 233, .18) 55%, transparent),
    radial-gradient(closest-side at 8% 92%, rgba(225, 29, 72, .12), transparent);
}
.hero-main { min-width: 0; }
.badge {
  display: inline-flex; align-items: center; gap: 10px; margin: 0 0 24px;
  padding: 6px 14px 6px 12px; border-radius: 999px;
  background: rgba(34, 211, 238, .08); border: 1px solid rgba(34, 211, 238, .35);
  color: var(--cyan-light); font-size: 13.5px; font-weight: 500; line-height: 1.4;
}
.badge::before {
  content: ''; flex: none; width: 8px; height: 8px; border-radius: 50%; background: var(--cyan);
  animation: pouls 2.2s ease-out infinite;
}
@keyframes pouls {
  0%       { box-shadow: 0 0 0 0 rgba(34, 211, 238, .6); }
  70%, 100% { box-shadow: 0 0 0 9px rgba(34, 211, 238, 0); }
}
.hero h1 {
  font: 700 clamp(2.8rem, 7.2vw, 5rem)/1.02 var(--display); letter-spacing: -.035em;
  padding-bottom: .06em;
  background: linear-gradient(95deg, #FFFFFF 25%, #93C5FD 62%, var(--cyan) 96%);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.hero-titre { font: 500 15px var(--mono); color: var(--muted); margin: 16px 0 24px; }
.hero-titre::before { content: '// '; color: var(--cyan); }
.hero-texte { max-width: 56ch; font-size: 17px; }

/* Terminal (G) — n'affiche que des faits tirés de contenu/ */
.terminal {
  min-width: 0; border-radius: 16px; overflow: hidden;
  background: rgba(2, 6, 23, .84); border: 1px solid rgba(96, 165, 250, .3);
  box-shadow: 0 30px 80px -30px rgba(37, 99, 235, .7);
  font: 13.5px/1.85 var(--mono);
}
.t-bar {
  display: flex; align-items: center; gap: 7px; padding: 11px 14px;
  background: rgba(15, 23, 42, .92); border-bottom: 1px solid var(--line);
}
.t-bar span { width: 11px; height: 11px; border-radius: 50%; background: #FF5F57; }
.t-bar span:nth-child(2) { background: #FEBC2E; }
.t-bar span:nth-child(3) { background: #28C840; }
.t-bar em { flex: 1; text-align: center; margin-right: 50px; font-style: normal; font-size: 12px; color: var(--muted); }
.t-body { padding: 16px 18px 18px; overflow-wrap: anywhere; }
.t-body > * { animation: t-ligne .4s ease-out both; animation-delay: calc(var(--i, 0) * .3s + .25s); }
@keyframes t-ligne { from { opacity: 0; transform: translateY(4px); } }
.t-cmd { color: var(--ink); }
.t-user { color: var(--cyan); }
.t-path { color: var(--blue-light); }
.t-out { color: #93A4BF; margin-bottom: 10px; }
.t-out a { color: #93C5FD; text-decoration: none; }
.t-out a:hover { color: var(--cyan); text-decoration: underline; }
.t-ls { display: flex; flex-wrap: wrap; column-gap: 20px; }
.t-caret {
  display: inline-block; width: 9px; height: 17px; vertical-align: -3px;
  background: var(--cyan); animation: caret 1.1s steps(1) infinite;
}
@keyframes caret { 50% { opacity: 0; } }

.section { padding-top: 8px; }
.section-head {
  display: flex; align-items: flex-end; justify-content: space-between; gap: 16px; margin-bottom: 26px;
}
.section-head h2, .section-titre { font: 600 1.65rem/1.2 var(--display); letter-spacing: -.02em; }
.section-head h2::before, .section-titre::before { content: '// '; color: var(--cyan); font: 500 .75em var(--mono); }
.section-head a { color: var(--cyan-light); text-decoration: none; font-weight: 500; font-size: 15px; white-space: nowrap; }
.section-head a:hover { color: var(--cyan); }
.section-titre { margin: 56px 0 22px; }
.section-titre:first-of-type { margin-top: 36px; }

/* --- Couleur par catégorie (cartes et fiche projet) --------------------- */
.card, .projet-head { --cat: var(--blue-light); --cat-rgb: 96, 165, 250; }
[data-cat="stage"] { --cat: var(--red-light); --cat-rgb: 251, 113, 133; }
[data-cat="bts"]   { --cat: var(--cyan);      --cat-rgb: 34, 211, 238; }

/* --- Cartes de projet (F) ----------------------------------------------- */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 20px; }
.card {
  position: relative; display: flex; flex-direction: column; gap: 12px;
  padding: 24px 22px 20px; border-radius: var(--radius); overflow: hidden;
  background: linear-gradient(180deg, rgba(255, 255, 255, .055), rgba(255, 255, 255, .018));
  border: 1px solid var(--line); color: inherit; text-decoration: none;
  transition: transform .2s, border-color .2s, box-shadow .2s;
}
.card::before {
  content: ''; position: absolute; left: 0; right: 0; top: 0; height: 3px;
  background: linear-gradient(90deg, var(--cat), rgba(var(--cat-rgb), 0));
}
.card::after {
  content: ''; position: absolute; inset: 0; pointer-events: none;
  background: radial-gradient(420px 170px at 0% 0%, rgba(var(--cat-rgb), .13), transparent 70%);
}
.card:hover {
  transform: translateY(-4px); border-color: rgba(var(--cat-rgb), .55);
  box-shadow: 0 26px 50px -26px rgba(var(--cat-rgb), .6);
}
.card[hidden] { display: none; }
.card-img {
  width: calc(100% + 44px); margin: -24px -22px 4px; aspect-ratio: 16/9; object-fit: cover;
  border-bottom: 1px solid var(--line);
}
.card-top { display: flex; align-items: center; justify-content: space-between; }
.card-ico {
  display: grid; place-items: center; width: 42px; height: 42px; border-radius: 12px;
  background: rgba(var(--cat-rgb), .12); border: 1px solid rgba(var(--cat-rgb), .32); color: var(--cat);
}
.card-ico svg { width: 22px; height: 22px; }
.card-fleche { color: var(--muted); font-size: 18px; transition: transform .2s, color .2s; }
.card:hover .card-fleche { transform: translate(3px, -3px); color: var(--cat); }
.card h3 { font: 600 1.18rem/1.3 var(--display); margin: 2px 0 0; }
.card p { margin: 0; font-size: 15px; line-height: 1.6; color: var(--muted); }
.card .card-meta { margin-top: auto; padding-top: 14px; border-top: 1px solid var(--line); }
.card-meta { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.tag {
  font: 500 11.5px var(--mono); letter-spacing: .02em; padding: 3px 9px; border-radius: 6px;
  background: rgba(var(--cat-rgb, 96, 165, 250), .12); color: var(--cat, var(--blue-light));
}
.card-date { font: 12px var(--mono); color: var(--muted); margin-left: auto; }

.filtres { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 20px; }
.filtres button {
  font: 500 14px var(--font); padding: 6px 14px; border-radius: 999px;
  border: 1px solid var(--line-strong); background: transparent; color: var(--text); cursor: pointer;
}
.filtres button[aria-pressed="true"] { background: var(--cyan); border-color: var(--cyan); color: #04122B; }

/* --- Pages -------------------------------------------------------------- */
.page { padding-top: 64px; }
body:not([data-page="accueil"]):not([data-page="projets"]) .page { max-width: 880px; }
.page > h1, .projet-head h1 {
  font: 700 clamp(2.3rem, 5.5vw, 3.5rem)/1.08 var(--display); letter-spacing: -.03em;
  background: linear-gradient(95deg, #FFFFFF 35%, #93C5FD 75%, var(--cyan));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.page > h1 { margin-bottom: 24px; }
.intro { margin-bottom: 8px; }

/* --- Fiche projet ------------------------------------------------------- */
.retour {
  display: inline-block; margin-bottom: 22px;
  font: 500 13px var(--mono); color: var(--muted); text-decoration: none;
}
.retour:hover { color: var(--cyan); }
.projet-head {
  position: relative; overflow: hidden; padding: 32px; margin-bottom: 44px; border-radius: 20px;
  border: 1px solid var(--line);
  background:
    radial-gradient(600px 260px at 100% 0%, rgba(var(--cat-rgb), .2), transparent 70%),
    linear-gradient(180deg, rgba(255, 255, 255, .05), rgba(255, 255, 255, .015));
}
.projet-head::before {
  content: ''; position: absolute; left: 0; right: 0; top: 0; height: 3px;
  background: linear-gradient(90deg, var(--cat), rgba(var(--cat-rgb), 0));
}
.projet-head h1 { font-size: clamp(1.9rem, 4.6vw, 2.8rem); margin: 16px 0 14px; }
.lead { font-size: 1.12rem; line-height: 1.65; color: var(--text); margin: 0; max-width: 65ch; }
.tags { list-style: none; padding: 0; margin: 22px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.tags li {
  font: 12.5px var(--mono); padding: 4px 11px; border-radius: 8px;
  background: rgba(34, 211, 238, .07); border: 1px solid rgba(34, 211, 238, .22); color: var(--cyan-light);
}
.voisins { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 64px; }
.voisins a {
  display: block; padding: 18px 20px; border-radius: 14px;
  border: 1px solid var(--line); background: var(--panel);
  color: var(--ink); text-decoration: none; font-weight: 600; line-height: 1.45;
  transition: border-color .15s, transform .15s;
}
.voisins a:hover { border-color: var(--cyan); transform: translateY(-2px); }
.voisins small { display: block; font: 500 12px var(--mono); color: var(--muted); margin-bottom: 4px; }
.voisins .suiv { grid-column: 2; text-align: right; }

/* --- Contact ------------------------------------------------------------ */
.coordonnees {
  margin: 32px 0 0; display: grid; border: 1px solid var(--line); border-radius: 16px;
  overflow: hidden; background: var(--panel);
}
.coordonnees div { display: flex; gap: 16px; padding: 16px 22px; border-top: 1px solid var(--line); }
.coordonnees div:first-child { border-top: 0; }
.coordonnees dt { width: 140px; flex: none; font: 500 13px/1.9 var(--mono); color: var(--muted); }
.coordonnees dd { margin: 0; color: var(--ink); }
.coordonnees a { color: var(--cyan-light); text-decoration: none; }
.coordonnees a:hover { text-decoration: underline; }

/* --- Texte écrit en Markdown -------------------------------------------- */
.prose { max-width: var(--prose); }
/* Espace entre paragraphes : la marge du haut vient de « * + * », celle
   du bas est retirée (sinon les deux se cumulent ou s’annulent). */
.prose > :first-child { margin-top: 0; }
.prose > * + * { margin-top: 1.05em; }
.prose p { margin-bottom: 0; }
.prose h2 { font: 600 1.55rem/1.25 var(--display); letter-spacing: -.02em; margin-top: 2.3em; }
.prose h2::before {
  content: ''; display: block; width: 36px; height: 3px; border-radius: 3px; margin-bottom: .75em;
  background: linear-gradient(90deg, var(--blue-light), var(--cyan));
}
.prose > h2:first-child { margin-top: 0; }
.prose h3 { font: 600 1.12rem/1.35 var(--display); color: #E2E8F0; margin-top: 1.7em; }
.prose h2 + *, .prose h3 + * { margin-top: .6em; }
.prose strong { color: var(--ink); font-weight: 600; }
.prose a { color: var(--cyan); text-decoration-color: rgba(34, 211, 238, .4); text-underline-offset: 3px; }
.prose ul, .prose ol { padding-left: 1.3em; margin-bottom: 0; }
.prose li + li { margin-top: .35em; }
.prose li::marker { color: var(--cyan); }
.prose code { font: .88em var(--mono); background: rgba(148, 163, 184, .12); color: #E2E8F0; padding: 2px 6px; border-radius: 5px; }
.prose pre {
  background: rgba(2, 6, 23, .85); border: 1px solid var(--line); color: #E2E8F0;
  padding: 16px 18px; border-radius: 12px; overflow-x: auto;
}
.prose pre code { background: none; padding: 0; color: inherit; }
.prose blockquote { margin-left: 0; padding: 2px 0 2px 18px; border-left: 3px solid var(--red); color: var(--text); }
.prose figure { margin: 1.6em 0; }
.prose figure img { border-radius: 12px; border: 1px solid var(--line); }
.prose figcaption { font-size: 14px; color: var(--muted); margin-top: 8px; }
.prose hr { border: 0; border-top: 1px solid var(--line); margin: 2.4em 0; }
.md-table { overflow-x: auto; }
.prose table { border-collapse: collapse; width: 100%; font-size: 15px; }
.prose th, .prose td { border: 1px solid var(--line); padding: 9px 12px; text-align: left; }
.prose th { background: var(--panel-2); color: var(--ink); }
.md-check { display: inline-block; width: 14px; height: 14px; border: 1.5px solid var(--muted); border-radius: 3px; margin-right: 8px; vertical-align: -2px; }
.md-check.is-done { background: var(--cyan); border-color: var(--cyan); }

/* --- Écrans moyens ------------------------------------------------------ */
@media (max-width: 900px) {
  .hero { grid-template-columns: minmax(0, 1fr); gap: 44px; padding-top: 60px; padding-bottom: 56px; }
  .hero::before { top: 35%; height: 70%; }
}

/* --- Petits écrans ------------------------------------------------------ */
@media (max-width: 720px) {
  .wrap { padding-left: 16px; padding-right: 16px; }
  .hero { padding-top: 40px; padding-bottom: 48px; gap: 36px; }
  .section-head { flex-wrap: wrap; align-items: baseline; gap: 6px 16px; }
  .section-head h2, .section-titre { font-size: 1.4rem; }
  .header-inner { flex-wrap: wrap; height: auto; padding-top: 10px; padding-bottom: 6px; gap: 8px 12px; }
  .site-nav { order: 3; width: 100%; margin-left: 0; overflow-x: auto; }
  .site-nav a { padding: 6px 12px; }
  .nav-cours { margin-left: auto; padding: 6px 13px; font-size: 13px; }
  .terminal { font-size: 12.5px; }
  .page { padding-top: 44px; }
  .projet-head { padding: 24px 20px; }
  .cards { grid-template-columns: minmax(0, 1fr); }
  .voisins { grid-template-columns: minmax(0, 1fr); }
  .voisins .suiv { grid-column: auto; }
  .coordonnees div { flex-direction: column; gap: 2px; }
}

/* --- Animations coupées si le système le demande ------------------------ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}