/* ==========================================================================
   Expérimentarium — feuille de style partagée
   ========================================================================== */

:root {
  --bg: #0f0e1a;
  --bg-soft: #1a1830;
  --card: #211f3a;
  --ink: #f4f2ff;
  --ink-soft: #b9b4dd;
  --accent: #ff5db1;
  --accent-2: #5df0ff;
  --accent-3: #ffd95d;
  --radius: 20px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Trebuchet MS", "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 800px at 10% -10%, #2a1e46 0%, transparent 55%),
    radial-gradient(1000px 700px at 110% 10%, #10304a 0%, transparent 55%),
    var(--bg);
  overflow-x: hidden;
}

a { color: inherit; }

/* ---------- Barre de navigation « retour » (pages d'expérience) ---------- */
.topbar {
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 50;
  display: flex;
  gap: 10px;
  align-items: center;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  color: var(--ink);
  text-decoration: none;
  font-weight: bold;
  backdrop-filter: blur(8px);
  transition: transform 0.15s ease, background 0.15s ease;
}
.back-link:hover { transform: translateX(-3px); background: rgba(255, 255, 255, 0.16); }

.page-tag {
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.85rem;
  color: var(--ink-soft);
  backdrop-filter: blur(8px);
}

/* ---------- En-tête / héros ---------- */
.hero {
  text-align: center;
  padding: 90px 20px 40px;
}

.badge {
  display: inline-block;
  padding: 8px 18px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  color: #131022;
  font-weight: 800;
  letter-spacing: 0.03em;
  font-size: 0.85rem;
  box-shadow: 0 8px 30px rgba(255, 93, 177, 0.35);
}

.title {
  font-size: clamp(2.6rem, 8vw, 5rem);
  line-height: 1.05;
  margin: 22px 0 12px;
  font-weight: 900;
  letter-spacing: -0.02em;
}

.wiggle {
  display: inline-block;
  background: linear-gradient(90deg, var(--accent), var(--accent-3), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  animation: wiggle 3s ease-in-out infinite;
}
@keyframes wiggle {
  0%, 100% { transform: rotate(-2deg); }
  50%      { transform: rotate(2deg); }
}

.subtitle {
  max-width: 640px;
  margin: 0 auto;
  color: var(--ink-soft);
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  line-height: 1.6;
}

/* ---------- Grille de la page d'accueil ---------- */
.grid {
  max-width: 1080px;
  margin: 30px auto 60px;
  padding: 0 20px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 22px;
}

.tile {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 26px 24px 22px;
  border-radius: var(--radius);
  background: var(--card);
  border: 1px solid rgba(255, 255, 255, 0.08);
  text-decoration: none;
  overflow: hidden;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}
.tile::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(400px 200px at 80% -20%, rgba(255, 255, 255, 0.12), transparent 70%);
  opacity: 0;
  transition: opacity 0.2s ease;
}
.tile:hover {
  transform: translateY(-6px) rotate(-0.4deg);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.45);
  border-color: rgba(255, 255, 255, 0.22);
}
.tile:hover::before { opacity: 1; }

.tile-emoji {
  font-size: 3rem;
  filter: drop-shadow(0 6px 10px rgba(0, 0, 0, 0.4));
  transition: transform 0.3s ease;
}
.tile:hover .tile-emoji { transform: scale(1.15) rotate(-8deg); }

.tile h2 { margin: 6px 0 0; font-size: 1.35rem; }
.tile p { margin: 0; color: var(--ink-soft); line-height: 1.5; flex: 1; }
.tile-go {
  margin-top: 10px;
  font-weight: 800;
  color: var(--accent-2);
}

/* Petits accents de couleur par tuile */
.tile-ghost:hover   { border-color: #b9b4dd; }
.tile-confetti:hover { border-color: var(--accent); }
.tile-rainbow:hover { border-color: var(--accent-3); }
.tile-gravity:hover { border-color: #7dffb0; }
.tile-matrix:hover  { border-color: #37ff8b; }
.tile-button:hover  { border-color: var(--accent-2); }

/* ---------- Pied de page ---------- */
.footer {
  text-align: center;
  padding: 30px 20px 50px;
  color: var(--ink-soft);
}
.footer .tiny { font-size: 0.8rem; opacity: 0.7; }

/* ---------- Pages « expérience » plein écran ---------- */
.experience {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
}

.experience .hint {
  position: absolute;
  bottom: 26px;
  left: 50%;
  transform: translateX(-50%);
  padding: 12px 22px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--ink);
  font-size: 0.95rem;
  backdrop-filter: blur(8px);
  z-index: 20;
  pointer-events: none;
  animation: floaty 2.4s ease-in-out infinite;
}
@keyframes floaty {
  0%, 100% { transform: translate(-50%, 0); }
  50%      { transform: translate(-50%, -6px); }
}

canvas { display: block; }

/* Curseurs personnalisés */
.no-cursor { cursor: none; }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; }
}