/* ══════════════════════════════════════════════════
   APLATS — style.css
   Fond blanc, typographie sobre, couleurs des œuvres
══════════════════════════════════════════════════ */

:root {
  --bg:           #f8f7f4;
  --bg-white:     #ffffff;
  --text:         #1a1a1a;
  --text-muted:   #888888;
  --text-dim:     #aaaaaa;
  --border:       #e2e0db;
  --border-dark:  #c0bdb6;
  --accent:       #1a1a1a;
  --radius:       1px;
  --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
══════════════════════════════════════════════════ */
.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: 1.0;
}

.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(3rem, 10vw, 7rem);
  font-weight: 400;
  letter-spacing: 0.12em;
  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;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  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(0,0,0,0.03);
}

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

/* ══════════════════════════════════════════════════
   GALERIE
══════════════════════════════════════════════════ */
.gallery {
  min-height: 100vh;
  padding-bottom: 4rem;
}

.gallery-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 2rem;
  background: rgba(248, 247, 244, 0.93);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.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); }

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

/* ── Grille ── */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 2px;
  padding: 2px;
  background: var(--border);
}

/* ── Carte ── */
.card {
  position: relative;
  background: var(--bg-white);
  cursor: pointer;
  overflow: hidden;
  aspect-ratio: 1 / 1;
  list-style: none;
}

.card-img-wrap {
  position: absolute;
  inset: 0;
}

.card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.55s cubic-bezier(0.4, 0, 0.2, 1),
              filter 0.55s ease;
  filter: saturate(0.92) brightness(0.97);
}

.card:hover .card-img {
  transform: scale(1.04);
  filter: saturate(1.08) brightness(1.02);
}

/* Overlay blanc semi-transparent au survol */
.card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(255,255,255,0.72) 0%,
    rgba(255,255,255,0.05) 45%,
    transparent 100%
  );
  opacity: 0;
  transition: opacity var(--transition);
  display: flex;
  align-items: flex-end;
  padding: 1rem;
}

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

.card-label {
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  color: rgba(0,0,0,0.55);
  text-transform: uppercase;
  font-family: var(--font-sans);
}

/* Numéro d'index */
.card-index {
  position: absolute;
  top: 0.7rem;
  right: 0.8rem;
  font-size: 0.62rem;
  color: rgba(0,0,0,0.18);
  letter-spacing: 0.08em;
  transition: color var(--transition);
}

.card:hover .card-index { color: rgba(0,0,0,0.45); }

/* Ligne décorative */
.card::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: rgba(0,0,0,0.15);
  transition: width 0.45s ease;
}

.card:hover::after { width: 100%; }

/* ══════════════════════════════════════════════════
   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(248, 247, 244, 0.97);
  cursor: zoom-out;
}

.viewer-stage {
  position: relative;
  z-index: 2;
  max-width: 90vw;
  max-height: 88vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.viewer-img {
  max-width: 90vw;
  max-height: 88vh;
  width: auto;
  height: auto;
  display: block;
  box-shadow: 0 4px 40px rgba(0,0,0,0.12), 0 0 0 1px rgba(0,0,0,0.06);
  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(0,0,0,0.03);
}

.viewer-prev { left: 1.5rem; }
.viewer-next { right: 1.5rem; }

.viewer-info {
  position: absolute;
  bottom: 1.4rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 2rem;
  font-size: 0.68rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ══════════════════════════════════════════════════
   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 bounce {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(5px); }
}

@keyframes viewerIn {
  from { opacity: 0; transform: scale(0.97); }
  to   { opacity: 1; transform: scale(1); }
}

@keyframes cardReveal {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.gallery.fade-in {
  animation: fadeInPage 0.5s ease both;
}

@keyframes fadeInPage {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ══════════════════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════════════════ */
@media (max-width: 600px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
  .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: 0.9rem 1rem; }
}

@media (max-width: 380px) {
  .grid { grid-template-columns: 1fr; }
}

/* ══════════════════════════════════════════════════
   SCROLLBAR
══════════════════════════════════════════════════ */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border-dark); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: #999; }

: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;
}