/* =========================================================================
   Portfolio Gabriel Chouvet — feuille de style unique
   Sommaire :
   1.  Tokens & thèmes
   2.  Reset & base
   3.  Typographie
   4.  Utilitaires & accessibilité
   5.  Liquid glass (subtil)
   6.  Boutons & liens
   7.  En-tête / navigation intelligente
   8.  Recherche & menu mobile
   9.  Hero vitrail (accueil)
   10. Sections accueil (projets récents, agenda)
   11. Cartes
   12. Pages claires : enveloppe & titres
   13. Archive (filtres, grille, fiche détaillée, lightbox)
   14. Biographie (portrait, frise)
   15. Formation
   16. Contact (formulaire)
   17. Footer + bandeau universel
   18. Responsive
   19. prefers-reduced-motion
   ========================================================================= */

/* 1. TOKENS & THÈMES ----------------------------------------------------- */
:root {
  /* Palette « vitrail » — encre profonde, pierre froide (volontairement pas le
     cream « IA »), duotone cobalt ↔ grenat (rosace) réservé à la signature. */
  --bg-dark: #0B0B10;
  --ink-dark: #F4F3EE;
  --bg-light: #E7E8EA;
  --bg-light-alt: #FFFFFF;
  --ink-light: #16171B;
  --ink-light-muted: #63646B;

  /* Accent duotone : cobalt + grenat (les deux verres dominants du vitrail) */
  --accent: #2247B8;
  --accent-2: #8E2D4D;
  --accent-weak: rgba(34, 71, 184, 0.12);
  --accent-grad: linear-gradient(95deg, var(--accent) 0%, #5a3a8f 52%, var(--accent-2) 100%);
  --accent-ink: #ffffff;

  --line-light: rgba(0, 0, 0, 0.08);
  --line-dark: rgba(255, 255, 255, 0.08);

  /* Typographie */
  --font-serif: "Fraunces", Georgia, "Times New Roman", serif;
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "Space Mono", "SF Mono", ui-monospace, Menlo, Consolas, monospace;

  /* Échelle d'espacement */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4.5rem;
  --space-7: 7rem;

  --maxw: 1200px;
  --maxw-narrow: 760px;
  --radius: 14px;
  --radius-lg: 22px;
  --radius-pill: 999px;

  --ease-glass: cubic-bezier(0.25, 0.46, 0.45, 0.94);

  /* En-tête */
  --header-h: 64px;
}

/* Thème clair (pages intérieures) — par défaut */
body.theme-light {
  --bg: var(--bg-light);
  --bg-alt: var(--bg-light-alt);
  --ink: var(--ink-light);
  --ink-muted: var(--ink-light-muted);
  --line: var(--line-light);

  --surface: #ffffff;
  --glass-bg: rgba(255, 255, 255, 0.6);
  --glass-bg-strong: rgba(255, 255, 255, 0.78);
  --glass-border: rgba(255, 255, 255, 0.7);
  --glass-hi: rgba(255, 255, 255, 0.85);
  --glass-lo: rgba(0, 0, 0, 0.06);
  --glass-drop: 0 6px 24px rgba(0, 0, 0, 0.08);
  --header-glass: rgba(245, 245, 247, 0.72);
}

/* Thème sombre (accueil) */
body.theme-dark {
  --bg: var(--bg-dark);
  --bg-alt: #0d0d10;
  --ink: var(--ink-dark);
  --ink-muted: rgba(245, 245, 247, 0.6);
  --line: var(--line-dark);

  --surface: rgba(255, 255, 255, 0.04);
  --glass-bg: rgba(255, 255, 255, 0.07);
  --glass-bg-strong: rgba(255, 255, 255, 0.12);
  --glass-border: rgba(255, 255, 255, 0.16);
  --glass-hi: rgba(255, 255, 255, 0.35);
  --glass-lo: rgba(0, 0, 0, 0.35);
  --glass-drop: 0 8px 30px rgba(0, 0, 0, 0.5);
  --header-glass: rgba(10, 10, 12, 0.6);
}

/* 2. RESET & BASE -------------------------------------------------------- */
*,
*::before,
*::after { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img,
svg,
video,
iframe { max-width: 100%; display: block; }

img { height: auto; }

a { color: inherit; text-decoration: none; }

button { font: inherit; color: inherit; cursor: pointer; background: none; border: none; }

ul { list-style: none; margin: 0; padding: 0; }

:focus { outline: none; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* 3. TYPOGRAPHIE --------------------------------------------------------- */
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1.08;
  letter-spacing: -0.01em;
  margin: 0 0 0.4em;
  font-optical-sizing: auto;
}

p { margin: 0 0 1.1em; }
p:last-child { margin-bottom: 0; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin: 0 0 var(--space-2);
}

.meta {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.02em;
  color: var(--ink-muted);
}

em { font-style: italic; }

.todo {
  font-family: var(--font-mono);
  font-size: 0.78em;
  color: var(--accent);
  background: var(--accent-weak);
  padding: 0.05em 0.4em;
  border-radius: 6px;
}

/* 4. UTILITAIRES & ACCESSIBILITÉ ---------------------------------------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
}

.section { padding-block: clamp(3.5rem, 9vw, 7rem); }

.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

.skip-link {
  position: fixed;
  top: -100px;
  left: 1rem;
  z-index: 1000;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 0.6rem 1rem;
  border-radius: 8px;
  transition: top 0.2s ease;
}
.skip-link:focus { top: 1rem; }

[hidden] { display: none !important; }

/* 5. LIQUID GLASS (subtil) ---------------------------------------------- */
/* Appliqué aux éléments cliquables : cartes, boutons, liens nav, filtres, CTA.
   Reflet spéculaire simulé par box-shadow multi-couches. Mise à l'échelle légère. */
.glass {
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  backdrop-filter: blur(16px) saturate(160%);
  border: 1px solid var(--glass-border);
  box-shadow:
    inset 0 1px 0 var(--glass-hi),
    inset 0 -1px 0 var(--glass-lo),
    var(--glass-drop);
  transition: transform 300ms var(--ease-glass),
              background 300ms var(--ease-glass),
              box-shadow 300ms var(--ease-glass),
              border-color 300ms var(--ease-glass);
}

.glass-hover { transition: transform 300ms var(--ease-glass), background 300ms var(--ease-glass), box-shadow 300ms var(--ease-glass), border-color 300ms var(--ease-glass); }

.glass-hover:hover,
.glass-hover:focus-visible {
  background: var(--glass-bg-strong);
  -webkit-backdrop-filter: blur(16px) saturate(170%);
  backdrop-filter: blur(16px) saturate(170%);
  border-color: var(--glass-border);
  box-shadow:
    inset 0 1px 0 var(--glass-hi),
    inset 0 -1px 0 var(--glass-lo),
    var(--glass-drop);
  transform: scale(1.02);
}

/* 6. BOUTONS & LIENS ----------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-weight: 500;
  font-size: 0.95rem;
  line-height: 1;
  padding: 0.8rem 1.3rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: var(--glass-bg);
  -webkit-backdrop-filter: blur(14px) saturate(150%);
  backdrop-filter: blur(14px) saturate(150%);
  color: var(--ink);
  transition: transform 300ms var(--ease-glass), background 300ms var(--ease-glass), border-color 300ms var(--ease-glass), color 200ms;
}
.btn:hover,
.btn:focus-visible { transform: scale(1.02); border-color: var(--accent); }

.btn-accent {
  background: var(--accent-grad);
  border-color: transparent;
  color: var(--accent-ink);
}
.btn-accent:hover,
.btn-accent:focus-visible { filter: brightness(1.08); border-color: var(--accent); }

.btn .arrow { transition: transform 300ms var(--ease-glass); }
.btn:hover .arrow { transform: translateX(3px); }

.link-accent {
  color: var(--accent);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}
.link-accent .arrow { transition: transform 300ms var(--ease-glass); }
.link-accent:hover .arrow { transform: translateX(3px); }

/* Soulignement animé pour liens de prose */
.prose a {
  color: var(--accent);
  background-image: linear-gradient(var(--accent), var(--accent));
  background-size: 0% 1px;
  background-position: 0 100%;
  background-repeat: no-repeat;
  transition: background-size 300ms var(--ease-glass);
}
.prose a:hover { background-size: 100% 1px; }

/* 7. EN-TÊTE / NAVIGATION INTELLIGENTE ---------------------------------- */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  transition: transform 250ms ease, background 300ms var(--ease-glass),
              backdrop-filter 300ms var(--ease-glass), border-color 300ms;
  border-bottom: 1px solid transparent;
}
.site-header.is-hidden { transform: translateY(-100%); }

/* Accueil : transparent par-dessus le hero, glass une fois le hero franchi */
body.page-home .site-header { color: var(--ink-dark); }
body.page-home .site-header.is-solid {
  background: var(--header-glass);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  backdrop-filter: blur(16px) saturate(160%);
  border-bottom-color: var(--line-dark);
}

/* Pages intérieures : glass dès le chargement */
body:not(.page-home) .site-header {
  background: var(--header-glass);
  -webkit-backdrop-filter: blur(16px) saturate(160%);
  backdrop-filter: blur(16px) saturate(160%);
  border-bottom-color: var(--line);
}

.site-header__inner {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.brand {
  font-family: var(--font-serif);
  font-size: 1.18rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.nav-primary { display: flex; align-items: center; gap: 0.35rem; }
.nav-primary a {
  position: relative;
  padding: 0.45rem 0.8rem;
  border-radius: var(--radius-pill);
  font-size: 0.92rem;
  font-weight: 450;
  transition: color 200ms, background 300ms var(--ease-glass), transform 300ms var(--ease-glass);
}
.nav-primary a:hover,
.nav-primary a:focus-visible { color: var(--accent); transform: scale(1.02); }
.nav-primary a[aria-current="page"] { color: var(--accent); }
.nav-primary a[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 50%; bottom: 0.15rem;
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--accent);
  transform: translateX(-50%);
}

.header-tools { display: flex; align-items: center; gap: 0.25rem; }

.icon-btn {
  width: 40px; height: 40px;
  display: inline-flex; align-items: center; justify-content: center;
  border-radius: 50%;
  transition: background 300ms var(--ease-glass), transform 300ms var(--ease-glass), color 200ms;
}
.icon-btn:hover,
.icon-btn:focus-visible { color: var(--accent); transform: scale(1.05); }
.icon-btn svg { width: 20px; height: 20px; }

/* Sélecteur de langue */
.lang-switch { display: flex; align-items: center; gap: 0.15rem; font-family: var(--font-mono); font-size: 0.78rem; }
.lang-switch a {
  padding: 0.3rem 0.5rem;
  border-radius: var(--radius-pill);
  letter-spacing: 0.04em;
  transition: color 200ms, background 300ms var(--ease-glass);
}
.lang-switch a[aria-current="true"] { color: var(--accent); font-weight: 700; }
.lang-switch a:not([aria-current="true"]):hover { color: var(--accent); }
.lang-switch .sep { opacity: 0.4; }

.nav-toggle { display: none; }

/* 8. RECHERCHE & MENU MOBILE -------------------------------------------- */
.search-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 12vh;
  background: rgba(8, 8, 10, 0.55);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  backdrop-filter: blur(20px) saturate(160%);
  opacity: 0;
  visibility: hidden;
  transition: opacity 250ms ease, visibility 250ms ease;
}
.search-overlay.is-open { opacity: 1; visibility: visible; }

.search-box {
  width: min(680px, 90vw);
  color: #f5f5f7;
}
.search-field {
  display: flex; align-items: center; gap: 0.75rem;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: 0.9rem 1.2rem;
}
.search-field svg { width: 22px; height: 22px; flex: none; opacity: 0.8; }
.search-field input {
  flex: 1;
  background: none; border: none; outline: none;
  color: #fff;
  font-family: var(--font-serif);
  font-size: 1.5rem;
}
.search-field input::placeholder { color: rgba(255, 255, 255, 0.45); }

.search-results { margin-top: var(--space-3); display: grid; gap: 0.4rem; max-height: 56vh; overflow-y: auto; }
.search-result {
  display: flex; align-items: baseline; justify-content: space-between; gap: 1rem;
  padding: 0.85rem 1.1rem;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid transparent;
  transition: background 200ms, border-color 200ms, transform 200ms var(--ease-glass);
}
.search-result:hover { background: rgba(255, 255, 255, 0.1); border-color: rgba(255, 255, 255, 0.16); transform: scale(1.01); }
.search-result__title { font-family: var(--font-serif); font-size: 1.15rem; }
.search-result__meta { font-family: var(--font-mono); font-size: 0.74rem; color: rgba(255, 255, 255, 0.55); white-space: nowrap; }
.search-empty { color: rgba(255, 255, 255, 0.55); padding: 1rem; font-family: var(--font-mono); font-size: 0.85rem; }
.search-close { position: absolute; top: 1.4rem; right: 1.4rem; color: #fff; }

/* 9. HERO VITRAIL (accueil) --------------------------------------------- */
/* Scène fixe en arrière-plan : la séquence reste figée sur sa dernière frame
   une fois le hero franchi (décision validée §4.1). */
.vitrail-stage {
  position: fixed;
  inset: 0;
  z-index: -2;
  background: #050505;
  pointer-events: none;
  /* Fondu d'apparition : démarre tamisé puis se révèle (pas « hyper lumineux » d'emblée).
     En reduced-motion, l'override global ramène à l'état final instantanément. */
  animation: vitrail-in 1900ms cubic-bezier(0.22, 0.61, 0.36, 1) both;
}
@keyframes vitrail-in {
  from { opacity: 0; filter: brightness(0.32) saturate(0.85); }
  to   { opacity: 1; filter: none; }
}
.vitrail-stage canvas,
.vitrail-stage img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
/* Voile dégradé pour la lisibilité du nom par-dessus le vitrail */
.vitrail-veil {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  /* Halo sombre derrière le nom (centre) + assombrissement haut (sous la nav) et bas,
     pour la lisibilité du texte par-dessus le vitrail. */
  background:
    radial-gradient(58% 42% at 50% 50%, rgba(5, 5, 8, 0.66) 0%, rgba(5, 5, 8, 0.32) 52%, transparent 76%),
    linear-gradient(180deg, rgba(5, 5, 8, 0.58) 0%, rgba(5, 5, 8, 0.12) 20%, transparent 42%, transparent 60%, rgba(5, 5, 8, 0.72) 100%);
}

.hero {
  position: relative;
  height: 220vh; /* longueur de défilement pour la séquence */
}
.hero__inner {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: var(--space-4);
  color: var(--ink-dark);
}
.hero__name {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(2.8rem, 9vw, 7rem);
  letter-spacing: -0.02em;
  line-height: 0.98;
  margin: 0;
  text-shadow: 0 2px 30px rgba(0, 0, 0, 0.9), 0 1px 6px rgba(0, 0, 0, 0.7);
}
.hero__tagline {
  font-family: var(--font-mono);
  font-size: clamp(0.8rem, 2vw, 1rem);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-top: var(--space-3);
  color: rgba(245, 245, 247, 0.92);
  text-shadow: 0 1px 12px rgba(0, 0, 0, 0.85);
}
.scroll-hint {
  position: absolute;
  bottom: 2.2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(245, 245, 247, 0.65);
}
.scroll-hint .chevron {
  width: 22px; height: 22px;
  animation: bob 2s ease-in-out infinite;
}
@keyframes bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(6px); } }

/* 10. SECTIONS ACCUEIL -------------------------------------------------- */
/* Le contenu arrive par-dessus le vitrail figé : voile sombre translucide
   pour la lisibilité, le vitrail transparaît subtilement. */
.home-content {
  position: relative;
  z-index: 1;
  background: rgba(5, 5, 5, 0.86);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--line-dark);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  flex-wrap: wrap;
}
.section-head h2 { font-size: clamp(1.8rem, 4vw, 2.6rem); margin: 0; }

/* Agenda */
.agenda-list { display: grid; gap: 0.6rem; }
.agenda-item {
  display: grid;
  grid-template-columns: 130px 1fr auto;
  gap: var(--space-3);
  align-items: baseline;
  padding: 1.1rem 1.3rem;
  border-radius: var(--radius);
}
.agenda-item .date { font-family: var(--font-mono); font-size: 0.82rem; color: var(--accent); }
.agenda-item .title { font-family: var(--font-serif); font-size: 1.2rem; }
.agenda-item .place { font-family: var(--font-mono); font-size: 0.78rem; color: var(--ink-muted); }
.agenda-empty {
  padding: 2rem 1.3rem;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-muted);
  text-align: center;
  border: 1px dashed var(--line);
}

/* 11. CARTES ------------------------------------------------------------ */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: clamp(1rem, 2.5vw, 1.6rem);
}
.card-grid--3 { grid-template-columns: repeat(3, 1fr); }

.card {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius-lg);
  overflow: hidden;
  text-align: left;
  width: 100%;
  cursor: pointer;
}
.card__media {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: #111;
}
.card__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 600ms var(--ease-glass);
}
.card:hover .card__media img { transform: scale(1.05); }
.card__type {
  position: absolute;
  top: 0.8rem; left: 0.8rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-pill);
  background: rgba(0, 0, 0, 0.45);
  -webkit-backdrop-filter: blur(8px);
  backdrop-filter: blur(8px);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.18);
}
.card__body { padding: 1.1rem 1.2rem 1.3rem; flex: 1; display: flex; flex-direction: column; gap: 0.5rem; }
.card__title { font-family: var(--font-serif); font-style: italic; font-size: 1.35rem; line-height: 1.12; margin: 0; }
.card__meta {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--ink-muted);
  display: flex;
  flex-wrap: wrap;
  gap: 0.3rem 0.8rem;
  margin-top: auto;
}
.card__meta .dot::before { content: "·"; margin-right: 0.5rem; opacity: 0.5; }

/* 12. PAGES CLAIRES : ENVELOPPE & TITRES -------------------------------- */
main { min-height: 60vh; }
body:not(.page-home) main { padding-top: var(--header-h); }

.page-hero {
  padding-block: clamp(3rem, 8vw, 6rem) clamp(1.5rem, 4vw, 3rem);
}
.page-hero h1 { font-size: clamp(2.4rem, 6vw, 4.2rem); margin: 0; }
.page-hero .lead {
  max-width: var(--maxw-narrow);
  margin-top: var(--space-3);
  font-size: clamp(1.05rem, 2.2vw, 1.3rem);
  color: var(--ink-muted);
}

.prose {
  max-width: var(--maxw-narrow);
  font-size: 1.12rem;
  line-height: 1.75;
}
.prose h2 { font-size: 1.7rem; margin-top: 2.2em; }
.prose h3 { font-size: 1.3rem; margin-top: 1.8em; font-family: var(--font-sans); font-weight: 600; }

/* 13. ARCHIVE ----------------------------------------------------------- */
.archive-controls {
  position: sticky;
  top: var(--header-h);
  z-index: 30;
  padding-block: var(--space-3);
  margin-bottom: var(--space-4);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.archive-search {
  display: flex; align-items: center; gap: 0.6rem;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  padding: 0.7rem 1.1rem;
  margin-bottom: var(--space-3);
  max-width: 520px;
}
.archive-search svg { width: 18px; height: 18px; opacity: 0.5; flex: none; }
.archive-search input { flex: 1; border: none; background: none; outline: none; color: var(--ink); font-size: 0.98rem; }

.archive-filters { display: flex; flex-wrap: wrap; gap: 0.5rem; align-items: center; }
.filter-chip {
  font-family: var(--font-sans);
  font-size: 0.88rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: var(--bg-alt);
  color: var(--ink);
  transition: transform 300ms var(--ease-glass), background 250ms, color 250ms, border-color 250ms;
}
.filter-chip:hover { transform: scale(1.03); border-color: var(--accent); }
.filter-chip[aria-pressed="true"] {
  background: var(--accent-grad);
  border-color: transparent;
  color: var(--accent-ink);
}
.archive-year {
  margin-left: auto;
  display: flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-muted);
}
.archive-year select {
  font: inherit;
  color: var(--ink);
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  padding: 0.45rem 0.9rem;
}
.archive-meta {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  margin-bottom: var(--space-3);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ink-muted);
}
.archive-empty { padding: 4rem 1rem; text-align: center; color: var(--ink-muted); font-family: var(--font-mono); }

/* Fiche détaillée (modale) */
.detail-overlay {
  position: fixed; inset: 0; z-index: 300;
  display: flex; justify-content: center;
  padding: clamp(0.5rem, 3vw, 2rem);
  overflow-y: auto;
  background: rgba(8, 8, 10, 0.6);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  opacity: 0; visibility: hidden;
  transition: opacity 250ms ease, visibility 250ms ease;
}
.detail-overlay.is-open { opacity: 1; visibility: visible; }
.detail-panel {
  position: relative;
  width: min(900px, 100%);
  margin: auto;
  background: var(--bg-light);
  color: var(--ink-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.4);
  transform: translateY(16px) scale(0.99);
  transition: transform 300ms var(--ease-glass);
}
.detail-overlay.is-open .detail-panel { transform: none; }
.detail-cover { aspect-ratio: 16 / 9; background: #111; }
.detail-cover img { width: 100%; height: 100%; object-fit: cover; }
.detail-body { padding: clamp(1.5rem, 4vw, 3rem); }
.detail-body h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); font-style: italic; margin-bottom: 0.2em; }
.detail-tags { display: flex; flex-wrap: wrap; gap: 0.5rem 1.2rem; margin-bottom: var(--space-3); }
.detail-tags dt { font-family: var(--font-mono); font-size: 0.68rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-light-muted); }
.detail-tags dd { margin: 0 0 0.4rem; font-family: var(--font-mono); font-size: 0.84rem; }
.detail-tags .pair { display: flex; flex-direction: column; }
.detail-section { margin-top: var(--space-4); }
.detail-section h3 {
  font-family: var(--font-mono);
  font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-light-muted);
  margin-bottom: var(--space-2);
}
.detail-close {
  position: absolute; top: 0.9rem; right: 0.9rem; z-index: 2;
  width: 42px; height: 42px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255, 255, 255, 0.7);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(0, 0, 0, 0.08);
  transition: transform 250ms var(--ease-glass);
}
.detail-close:hover { transform: scale(1.08) rotate(90deg); }

/* Façade média (YouTube / Spotify chargés au clic — §7.6) */
.media-facade {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  border-radius: var(--radius);
  overflow: hidden;
  background: #000 center/cover no-repeat;
  display: flex; align-items: center; justify-content: center;
}
.media-facade--audio { aspect-ratio: auto; min-height: 120px; background: #14141a; }
.media-facade .play-btn {
  display: inline-flex; align-items: center; gap: 0.6rem;
  padding: 0.8rem 1.4rem;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.92);
  color: #1d1d1f;
  font-weight: 600; font-size: 0.95rem;
  transition: transform 250ms var(--ease-glass);
}
.media-facade:hover .play-btn { transform: scale(1.05); }
.media-frame { width: 100%; aspect-ratio: 16 / 9; border: none; border-radius: var(--radius); }
.media-frame--audio { aspect-ratio: auto; height: 152px; }
audio.media-frame { width: 100%; height: auto; aspect-ratio: auto; }

/* Carrousel média polyvalent (fiches d'archive + démonstrations des cours) */
.detail-media { background: #0b0b0e; }
.demos .carousel { max-width: 900px; margin: 0 auto; }
.carousel { width: 100%; }
.carousel__stage { position: relative; width: 100%; }
.carousel__stage.is-portrait { display: flex; justify-content: center; background: #0b0b0e; padding: 0.75rem 0; border-radius: var(--radius); }
.carousel__media { width: 100%; display: block; }
.carousel__stage .media-frame,
.carousel__stage .media-facade { aspect-ratio: 16 / 9; width: 100%; }
.carousel__stage.is-portrait .media-frame,
.carousel__stage.is-portrait .media-facade { aspect-ratio: 9 / 16; width: auto; height: min(68vh, 560px); border-radius: var(--radius); }
.carousel__image { margin: 0; }
.carousel__image img { width: 100%; display: block; cursor: zoom-in; border-radius: var(--radius); }
.carousel__stage.is-portrait .carousel__image img { width: auto; height: min(68vh, 560px); }
.carousel__image figcaption { padding: 0.5rem 0.2rem 0; font-family: var(--font-mono); font-size: 0.74rem; color: var(--ink-muted); }
.carousel__controls { display: flex; align-items: center; justify-content: center; gap: 1rem; padding: 0.7rem; }
.carousel__counter { font-family: var(--font-mono); font-size: 0.78rem; color: var(--ink-muted); min-width: 56px; text-align: center; }
.carousel-arrow {
  width: 42px; height: 42px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--line); background: var(--bg-alt); color: var(--ink);
  transition: transform 250ms var(--ease-glass), border-color 200ms, color 200ms;
}
.carousel-arrow:hover { transform: scale(1.08); border-color: var(--accent); color: var(--accent); }

/* Galerie + lightbox */
.gallery-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 0.6rem; }
.gallery-grid button { border-radius: var(--radius); overflow: hidden; aspect-ratio: 1; }
.gallery-grid img { width: 100%; height: 100%; object-fit: cover; transition: transform 400ms var(--ease-glass); }
.gallery-grid button:hover img { transform: scale(1.06); }

.lightbox {
  position: fixed; inset: 0; z-index: 400;
  display: flex; align-items: center; justify-content: center;
  background: rgba(5, 5, 5, 0.92);
  opacity: 0; visibility: hidden;
  transition: opacity 250ms ease, visibility 250ms ease;
}
.lightbox.is-open { opacity: 1; visibility: visible; }
.lightbox img { max-width: 92vw; max-height: 84vh; border-radius: 6px; }
.lightbox figcaption { position: absolute; bottom: 1.5rem; left: 0; right: 0; text-align: center; color: #f5f5f7; font-family: var(--font-mono); font-size: 0.82rem; }
.lightbox-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 52px; height: 52px; border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: rgba(255, 255, 255, 0.1); color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: background 200ms, transform 200ms var(--ease-glass);
}
.lightbox-nav:hover { background: rgba(255, 255, 255, 0.22); }
.lightbox-prev { left: 1.5rem; }
.lightbox-next { right: 1.5rem; }
.lightbox-close { top: 1.5rem; right: 1.5rem; transform: none; }

/* 14. BIOGRAPHIE -------------------------------------------------------- */
.bio-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}
.bio-portrait {
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: sticky;
  top: calc(var(--header-h) + 2rem);
  aspect-ratio: 3 / 4;
  background: var(--bg-alt);
}
.bio-portrait img { width: 100%; height: 100%; object-fit: cover; }

.timeline { margin-top: var(--space-6); border-top: 1px solid var(--line); }
.timeline h2 { font-size: clamp(1.6rem, 4vw, 2.2rem); margin: var(--space-5) 0 var(--space-4); }
.timeline-item {
  display: grid;
  grid-template-columns: 90px 1fr;
  gap: var(--space-3);
  padding: 1.3rem 0;
  border-bottom: 1px solid var(--line);
  align-items: baseline;
}
.timeline-item .year {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  font-weight: 700;
  background: var(--accent-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.timeline-item .what { font-family: var(--font-serif); font-style: italic; font-size: 1.3rem; line-height: 1.2; }
.timeline-item .where { font-family: var(--font-mono); font-size: 0.8rem; color: var(--ink-muted); margin-top: 0.25rem; }

/* 15. FORMATION --------------------------------------------------------- */
.training-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 4rem);
  margin-top: var(--space-5);
}
.feature-list { display: grid; gap: 0.9rem; }
.feature-list li {
  position: relative;
  padding-left: 1.8rem;
  font-size: 1.05rem;
  line-height: 1.5;
}
.feature-list li::before {
  content: "";
  position: absolute; left: 0; top: 0.55em;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--accent);
}
.panel {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 4vw, 2.5rem);
}
.cta-band {
  margin-top: var(--space-6);
  padding: clamp(2rem, 6vw, 4rem);
  border-radius: var(--radius-lg);
  background: var(--ink-light);
  color: #fff;
  text-align: center;
}
body.theme-dark .cta-band { background: var(--bg-alt); }
.cta-band h2 { font-size: clamp(1.6rem, 4vw, 2.4rem); color: #fff; }
.cta-band p { color: rgba(255, 255, 255, 0.7); max-width: 48ch; margin: 0 auto var(--space-3); }

/* 16. CONTACT ----------------------------------------------------------- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: clamp(2rem, 6vw, 5rem);
  margin-top: var(--space-4);
}
.contact-block { margin-bottom: var(--space-5); }
.contact-block h2 {
  font-family: var(--font-mono);
  font-size: 0.74rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: var(--space-2);
}
.contact-line { display: block; font-family: var(--font-serif); font-size: 1.5rem; margin-bottom: 0.4rem; }
.contact-line:hover { color: var(--accent); }
.social-links { display: flex; flex-direction: column; gap: 0.6rem; }
.social-links a { display: inline-flex; align-items: center; gap: 0.7rem; font-size: 1.05rem; }
.social-links a:hover { color: var(--accent); }
.social-links svg { width: 22px; height: 22px; }
.rgpd { margin-top: var(--space-4); font-size: 0.82rem; color: var(--ink-muted); max-width: 42ch; }

.form-field { margin-bottom: var(--space-3); }
.form-field label { display: block; font-size: 0.85rem; font-weight: 500; margin-bottom: 0.4rem; }
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  font: inherit;
  color: var(--ink);
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 0.85rem 1rem;
  transition: border-color 200ms, box-shadow 200ms;
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-weak);
  outline: none;
}
.form-field textarea { min-height: 150px; resize: vertical; }
.form-status { margin-top: var(--space-2); font-size: 0.9rem; }
.form-status.ok { color: #1a7f37; }
.form-status.ko { color: #c0392b; }
.honeypot { position: absolute; left: -5000px; }

/* 17. FOOTER + BANDEAU UNIVERSEL --------------------------------------- */
.site-footer {
  background: var(--bg-dark);
  color: var(--ink-dark);
  padding-block: clamp(3rem, 7vw, 5rem) var(--space-5);
  border-top: 1px solid var(--line-dark);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr 1fr;
  gap: var(--space-4);
}
.footer-brand .name { font-family: var(--font-serif); font-size: 1.6rem; font-weight: 600; }
.footer-brand p { color: rgba(245, 245, 247, 0.6); font-family: var(--font-mono); font-size: 0.8rem; margin-top: 0.6rem; max-width: 30ch; }
.footer-col h3 {
  font-family: var(--font-mono);
  font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: rgba(245, 245, 247, 0.5);
  margin-bottom: var(--space-2);
}
.footer-col a { display: block; padding: 0.25rem 0; color: rgba(245, 245, 247, 0.85); font-size: 0.95rem; transition: color 200ms; }
.footer-col a:hover { color: var(--accent); }

/* Bandeau universel (§7.9) — fond très sombre, Space Mono */
.global-bar {
  background: #0a0a0a;
  color: rgba(245, 245, 247, 0.55);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.global-bar__inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1.2rem clamp(1.25rem, 5vw, 3rem);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.8rem 1.5rem;
}
.global-bar a { transition: color 200ms; }
.global-bar a:hover { color: #f5f5f7; }
.global-bar .gb-contact { display: flex; gap: 1.2rem; flex-wrap: wrap; }
.global-bar .gb-social { display: flex; gap: 0.9rem; align-items: center; }
.global-bar .gb-social svg { width: 17px; height: 17px; }
.global-bar .gb-links { display: flex; gap: 1rem; flex-wrap: wrap; }
.global-bar .gb-legal { letter-spacing: 0.04em; }

/* 17a. SIGNATURE : filet de lumière réfractée (dégradé cobalt ↔ grenat) -- */
.page-hero h1::after,
.section-head h2::after,
.timeline > h2::after,
.demos > h2::after,
.rencontres > h2::after {
  content: "";
  display: block;
  width: 64px;
  height: 3px;
  margin-top: 0.85rem;
  border-radius: 2px;
  background: var(--accent-grad);
}
.section-head { align-items: center; }

/* Composants ajoutés : titres de panneau, téléchargements, démos, rencontres */
.panel-title { font-family: var(--font-sans); font-size: 1.25rem; font-weight: 600; margin: 0 0 1rem; }

.download-list { display: flex; flex-wrap: wrap; gap: 0.6rem; }
.download-link {
  display: inline-flex; align-items: center; gap: 0.5rem;
  padding: 0.6rem 1rem;
  border-radius: var(--radius-pill);
  border: 1px solid var(--line);
  background: var(--bg-alt);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  transition: transform 300ms var(--ease-glass), border-color 250ms, color 250ms;
}
.download-link:hover { transform: scale(1.03); border-color: var(--accent); color: var(--accent); }
.download-link svg { width: 16px; height: 16px; flex: none; }

.demos { margin-top: var(--space-6); }
.demo-videos {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
  margin-bottom: var(--space-3);
}
.demos .media-facade { border: 1px solid var(--line); }

.rencontres { margin-top: var(--space-6); border-top: 1px solid var(--line); padding-top: var(--space-4); }
.rencontres-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
}
.rencontre { margin: 0; border-radius: var(--radius); overflow: hidden; background: var(--bg-alt); border: 1px solid var(--line); }
.rencontre img { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: transform 500ms var(--ease-glass); }
.rencontre:hover img { transform: scale(1.04); }
.rencontre figcaption { padding: 0.6rem 0.8rem; font-family: var(--font-mono); font-size: 0.74rem; color: var(--ink-muted); }

/* 17b. RÉVÉLATION AU SCROLL (apparition fluide, façon framer-motion) ---- */
/* La classe .reveal n'est ajoutée que par JS : sans JS, le contenu reste
   visible (amélioration progressive). Désactivé en reduced-motion. */
@media (prefers-reduced-motion: no-preference) {
  .reveal {
    opacity: 0;
    transform: translateY(22px);
    transition: opacity 700ms var(--ease-glass), transform 700ms var(--ease-glass);
    will-change: opacity, transform;
  }
  .reveal.is-visible {
    opacity: 1;
    transform: none;
  }
}

/* 18. RESPONSIVE -------------------------------------------------------- */
@media (max-width: 920px) {
  .bio-layout { grid-template-columns: 1fr; }
  .bio-portrait { position: static; max-width: 320px; }
  .training-grid,
  .contact-layout { grid-template-columns: 1fr; }
  .card-grid--3 { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  body { font-size: 16px; }
  .nav-primary { display: none; }
  .nav-toggle { display: inline-flex; }

  /* Menu mobile en plein écran */
  .nav-primary.is-open {
    display: flex;
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    bottom: 0;
    width: 100vw;
    height: calc(100vh - var(--header-h));
    z-index: 90;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
    padding: var(--space-4) clamp(1.25rem, 5vw, 3rem);
    overflow-y: auto;
    background: var(--bg); /* opaque : couvre entièrement la page */
    -webkit-backdrop-filter: blur(20px) saturate(160%);
    backdrop-filter: blur(20px) saturate(160%);
  }
  body.page-home .nav-primary.is-open { background: var(--bg-dark); }
  .nav-primary.is-open a { font-family: var(--font-serif); font-size: 1.8rem; padding: 0.4rem 0; }

  .agenda-item { grid-template-columns: 1fr; gap: 0.3rem; }
  .card-grid--3 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-3); }
  .archive-year { margin-left: 0; width: 100%; }
  .global-bar__inner { flex-direction: column; align-items: flex-start; }
}

/* 19. PREFERS-REDUCED-MOTION ------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  /* La nav reste visible en permanence (pas de glissement) */
  .site-header { transform: none !important; }
  /* Liquid glass : pas de mise à l'échelle, simple changement de couleur */
  .glass-hover:hover,
  .card:hover .card__media img,
  .btn:hover,
  .filter-chip:hover { transform: none !important; }
  /* Hero figé : pas de longue zone de scroll */
  .hero { height: 100vh; }
  .scroll-hint { display: none; }
}