/* ══════════════════════════════════════════════════
   LAVIS — style.css
   Fond blanc, frise horizontale, cartouche musée
══════════════════════════════════════════════════ */

:root {
  --bg:           #f9f8f5;
  --bg-white:     #ffffff;
  --text:         #1a1a1a;
  --text-muted:   #888888;
  --text-dim:     #bbbbbb;
  --border:       #e4e2dc;
  --border-dark:  #c2bfb8;
  --card-h:       72vh;   /* hauteur des vignettes dans la frise */
  --font-serif:   Georgia, 'Times New Roman', serif;
  --font-sans:    'Helvetica Neue', Arial, sans-serif;
  --transition:   0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }

/* ══════════════════════════════════════════════════
   SPLASH — aquarelle diluée
══════════════════════════════════════════════════ */
.splash {
  position: fixed;
  inset: 0;
  z-index: 100;
  background: var(--bg-white);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

#splash-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.5;
}

.splash-content {
  position: relative;
  z-index: 2;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3rem;
}

.splash-title-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
}

.splash-title {
  font-family: var(--font-serif);
  font-size: clamp(3.5rem, 12vw, 8rem);
  font-weight: 400;
  letter-spacing: 0.18em;
  color: var(--text);
  text-transform: uppercase;
  line-height: 1;
  animation: fadeInDown 1.1s ease both;
}

.splash-subtitle {
  font-size: clamp(0.7rem, 2vw, 0.85rem);
  letter-spacing: 0.35em;
  color: var(--text-muted);
  text-transform: uppercase;
  animation: fadeInDown 1.1s 0.2s ease both;
}

.splash-enter {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  background: none;
  border: 1px solid var(--border-dark);
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.9rem 2.4rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  font-size: 0.72rem;
  font-family: var(--font-sans);
  transition: border-color var(--transition), color var(--transition), background var(--transition);
  animation: fadeInUp 1.1s 0.5s ease both;
}

.splash-enter:hover {
  border-color: var(--text);
  color: var(--text);
  background: rgba(0,0,0,0.02);
}

.enter-arrow {
  font-size: 1.1rem;
  animation: slideRight 2s 2s infinite;
}

/* ══════════════════════════════════════════════════
   GALERIE
══════════════════════════════════════════════════ */
.gallery {
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

.gallery-header {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: rgba(249, 248, 245, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 10;
}

.btn-back {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.78rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-family: var(--font-sans);
  transition: color var(--transition);
  padding: 0.3rem 0;
}
.btn-back:hover { color: var(--text); }

.scroll-hint {
  font-size: 0.68rem;
  letter-spacing: 0.25em;
  color: var(--text-dim);
  text-transform: uppercase;
}

.gallery-count {
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  color: var(--text-muted);
  text-transform: uppercase;
}

/* ── Frise horizontale ── */
.frise-wrap {
  flex: 1;
  overflow-x: auto;
  overflow-y: hidden;
  cursor: grab;
  scrollbar-width: thin;
  scrollbar-color: var(--border-dark) var(--bg);
  padding: 2rem 2rem;
  display: flex;
  align-items: center;
}

.frise-wrap:active { cursor: grabbing; }

.frise-wrap::-webkit-scrollbar { height: 3px; }
.frise-wrap::-webkit-scrollbar-track { background: var(--bg); }
.frise-wrap::-webkit-scrollbar-thumb { background: var(--border-dark); border-radius: 2px; }

.frise {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 3px;
  height: var(--card-h);
  padding: 0 1rem;
}

/* ── Carte frise ── */
.card {
  position: relative;
  flex-shrink: 0;
  height: 100%;
  cursor: pointer;
  overflow: hidden;
  list-style: none;
  background: var(--bg-white);
  /* La largeur est calculée dynamiquement par JS selon le ratio */
}

.card-img {
  height: 100%;
  width: auto;
  display: block;
  object-fit: cover;
  transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1),
              filter 0.5s ease;
  filter: saturate(0.9) brightness(0.97);
}

.card:hover .card-img {
  transform: scale(1.03);
  filter: saturate(1.05) brightness(1.02);
}

/* Overlay bas au survol */
.card-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.8rem 0.8rem 0.7rem;
  background: linear-gradient(to top, rgba(255,255,255,0.8) 0%, transparent 100%);
  opacity: 0;
  transition: opacity var(--transition);
  pointer-events: none;
}

.card:hover .card-overlay { opacity: 1; }

.card-label {
  font-size: 0.62rem;
  letter-spacing: 0.2em;
  color: rgba(0,0,0,0.5);
  text-transform: uppercase;
  display: block;
}

/* Indicateur légende disponible */
.card-has-legende {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: rgba(0,0,0,0.2);
  transition: background var(--transition);
}
.card:hover .card-has-legende { background: rgba(0,0,0,0.5); }

/* Séparateur vertical entre groupes (optionnel, ajouté par JS) */
.frise-sep {
  flex-shrink: 0;
  width: 1px;
  height: 60%;
  background: var(--border);
  margin: 0 1.5rem;
}

/* ── Barre de progression ── */
.frise-progress {
  flex-shrink: 0;
  height: 2px;
  background: var(--border);
  margin: 0;
}

.frise-progress-bar {
  height: 100%;
  background: var(--border-dark);
  width: 0%;
  transition: width 0.1s linear;
}

/* ══════════════════════════════════════════════════
   VISIONNEUSE
══════════════════════════════════════════════════ */
.viewer {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
}

.viewer-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(249, 248, 245, 0.97);
  cursor: zoom-out;
}

.viewer-stage {
  position: relative;
  z-index: 2;
  max-width: 88vw;
  max-height: 84vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.viewer-img {
  max-width: 88vw;
  max-height: 84vh;
  width: auto;
  height: auto;
  display: block;
  box-shadow: 0 6px 48px rgba(0,0,0,0.10), 0 0 0 1px rgba(0,0,0,0.05);
  animation: viewerIn 0.28s ease both;
}

.viewer-close {
  position: absolute;
  top: 1.2rem;
  right: 1.5rem;
  z-index: 10;
  background: none;
  border: 1px solid var(--border-dark);
  color: var(--text-muted);
  cursor: pointer;
  width: 2.3rem;
  height: 2.3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  transition: border-color var(--transition), color var(--transition);
}
.viewer-close:hover { border-color: var(--text); color: var(--text); }

.viewer-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  z-index: 10;
  background: none;
  border: 1px solid var(--border-dark);
  color: var(--text-muted);
  cursor: pointer;
  width: 2.8rem;
  height: 4.5rem;
  font-size: 1.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color var(--transition), color var(--transition), background var(--transition);
}
.viewer-nav:hover { border-color: var(--text); color: var(--text); background: rgba(0,0,0,0.02); }
.viewer-prev { left: 1.5rem; }
.viewer-next { right: 1.5rem; }

/* Cartouche musée */
.viewer-cartouche {
  position: absolute;
  bottom: 1.4rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  align-items: baseline;
  gap: 3rem;
  max-width: 80vw;
}

.cartouche-left {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.cartouche-id {
  font-size: 0.68rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
}

.cartouche-legende {
  font-family: var(--font-serif);
  font-size: 0.82rem;
  font-style: italic;
  color: var(--text-muted);
  text-align: center;
  max-width: 50vw;
  line-height: 1.4;
  /* Apparaît seulement si non vide */
}
.cartouche-legende:empty { display: none; }

.viewer-counter {
  font-size: 0.65rem;
  letter-spacing: 0.25em;
  color: var(--text-dim);
  white-space: nowrap;
  flex-shrink: 0;
}

/* ══════════════════════════════════════════════════
   ANIMATIONS
══════════════════════════════════════════════════ */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-18px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(18px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes slideRight {
  0%, 100% { transform: translateX(0); }
  50%       { transform: translateX(5px); }
}
@keyframes viewerIn {
  from { opacity: 0; transform: scale(0.97); }
  to   { opacity: 1; transform: scale(1); }
}
@keyframes fadeInPage {
  from { opacity: 0; }
  to   { opacity: 1; }
}
.gallery.fade-in { animation: fadeInPage 0.5s ease both; }

/* ══════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════ */
@media (max-width: 600px) {
  :root { --card-h: 55vh; }
  .viewer-nav { width: 2.2rem; height: 3.2rem; font-size: 1.2rem; }
  .viewer-prev { left: 0.4rem; }
  .viewer-next { right: 0.4rem; }
  .gallery-header { padding: 0.8rem 1rem; }
  .scroll-hint { display: none; }
}

:focus-visible { outline: 1px solid #999; outline-offset: 2px; }

/* ══ Lien retour portail (splash) ══ */
.splash-back-link {
  position: absolute;
  top: 1.4rem;
  left: 1.6rem;
  font-size: 1.1rem;
  line-height: 1;
  color: rgba(0,0,0,0.30);
  text-decoration: none;
  z-index: 20;
  transition: color 0.2s;
  font-family: var(--font-sans, sans-serif);
}
.splash-back-link:hover,
.splash-back-link:focus {
  color: rgba(0,0,0,0.65);
  text-decoration: none;
}