/* ───────── VARIABLES & THÈMES ───────── */
:root {
  --bg: #0b0c10;
  --bg-panel: rgba(11, 12, 16, 0.85);
  --text: #e6e8eb;
  --text-muted: #8b92a0;
  --accent: #a855f7;
  --accent-glow: rgba(168, 85, 247, 0.4);
  --border: #2a2d3a;
  --nav-height: 64px;
  --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --phobia-hover: var(--text);
  --dream-blur: 0px;
  --dream-particles: 0;
}

[data-theme="light"] {
  --bg: #f8f9fa;
  --bg-panel: rgba(248, 249, 250, 0.9);
  --text: #1f2937;
  --text-muted: #6b7280;
  --accent: #7c3aed;
  --accent-glow: rgba(124, 58, 237, 0.2);
  --border: #d1d5db;
}

[data-dream="true"] {
  --dream-blur: 1.5px;
  --dream-particles: 1;
  --bg: linear-gradient(135deg, #0b0c10 0%, #1a1b26 100%);
  --accent: #c084fc;
  --accent-glow: rgba(192, 132, 252, 0.5);
}

/* ───────── BASE & RESET ───────── */
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  transition: background var(--transition), filter var(--transition);
}
[data-dream="true"] body { filter: blur(var(--dream-blur)); }

/* ───────── NAVIGATION ───────── */
.dp-header { position: sticky; top: 0; z-index: 100; backdrop-filter: blur(12px); border-bottom: 1px solid var(--border); }
.dp-nav {
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1400px; margin: 0 auto; padding: 0 1.5rem; height: var(--nav-height);
}
.dp-logo { font-size: 1.5rem; font-weight: 800; color: var(--accent); letter-spacing: -1px; text-decoration: none; }
.nav-primary { display: flex; gap: 1.5rem; list-style: none; }
.nav-link {
  background: none; border: none; color: var(--text); font-size: 0.95rem; font-weight: 500;
  cursor: pointer; padding: 0.5rem 0; position: relative; transition: color var(--transition);
}
.nav-link:hover, .nav-link:focus-visible { color: var(--accent); }
.nav-link::after {
  content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px;
  background: var(--accent); transition: width var(--transition);
}
.nav-link:hover::after, .nav-link:focus-visible::after { width: 100%; }

/* ───────── PROGRESS & ACTIONS ───────── */
.nav-actions { display: flex; align-items: center; gap: 1rem; }
.progress-indicator { display: flex; align-items: center; gap: 0.5rem; font-size: 0.8rem; color: var(--text-muted); }
.progress-bar { width: 60px; height: 6px; background: var(--border); border-radius: 99px; overflow: hidden; }
.progress-fill { height: 100%; background: var(--accent); transition: width 0.4s ease; }
.dream-toggle, .mobile-menu-btn {
  background: none; border: 1px solid var(--border); color: var(--text);
  width: 36px; height: 36px; border-radius: 50%; cursor: pointer; display: flex;
  align-items: center; justify-content: center; font-size: 1.1rem; transition: all var(--transition);
}
.dream-toggle:hover, .dream-toggle:focus-visible { background: var(--accent-glow); border-color: var(--accent); }
.mobile-menu-btn { display: none; }

/* ───────── LEVELS PANEL ───────── */
.levels-panel {
  position: absolute; top: 100%; left: 0; right: 0; background: var(--bg-panel);
  backdrop-filter: blur(16px); border-bottom: 1px solid var(--border); padding: 1.5rem;
  transform: translateY(-10px); opacity: 0; visibility: hidden; transition: all var(--transition);
}
.levels-panel[hidden] { display: none; }
.levels-panel.visible { transform: translateY(0); opacity: 1; visibility: visible; }
.panel-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1rem; }
.panel-header h3 { font-size: 1rem; letter-spacing: 1px; color: var(--text-muted); }
.panel-close { background: none; border: none; color: var(--text); font-size: 1.2rem; cursor: pointer; }
.levels-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }
.level-item {
  display: flex; flex-direction: column; gap: 0.25rem; padding: 1rem; border: 1px solid var(--border);
  border-radius: 8px; background: rgba(255,255,255,0.03); text-decoration: none; color: var(--text);
  transition: all var(--transition); position: relative; overflow: hidden;
}
.level-item:hover { border-color: var(--accent); transform: translateY(-2px); }
.level-item .level-num { font-size: 1.8rem; font-weight: 700; color: var(--accent); opacity: 0.6; }
.level-item .phobia-name { font-weight: 600; text-transform: uppercase; letter-spacing: 0.5px; }
.level-item .hero-name { font-size: 0.85rem; color: var(--text-muted); }
.level-item .level-status { position: absolute; top: 0.75rem; right: 0.75rem; font-size: 0.8rem; }
.level-item.unlocked { border-color: var(--accent); background: linear-gradient(135deg, rgba(168,85,247,0.1), transparent); }
.level-item.unlocked .level-status::after { content: "🔓"; }
.level-item.locked .level-status::after { content: "🔒"; opacity: 0.5; }

/* ───────── PHOBIA HOVER EFFECTS (GPU Optimized) ───────── */
.level-item[data-phobia="Nécrophobie"]:hover { text-shadow: 0 0 8px rgba(147,197,253,0.5); transform: translateY(-2px) rotate(0.3deg); }
.level-item[data-phobia="Photophobie"]:hover { box-shadow: 0 0 12px rgba(251,191,36,0.3); }
.level-item[data-phobia="Pyrophobie"]:hover { background: linear-gradient(135deg, rgba(239,68,68,0.15), transparent); }
.level-item[data-phobia="Claustrophobie"]:hover { transform: scale(0.98); padding: 1.05rem; }
.level-item[data-phobia="Nyctophobie"]:hover { filter: brightness(0.85); }

@media (max-width: 768px) {
  .nav-primary { position: fixed; top: var(--nav-height); left: 0; right: 0; background: var(--bg); flex-direction: column; padding: 1rem; transform: translateY(-100%); transition: transform var(--transition); }
  .nav-primary.open { transform: translateY(0); }
  .mobile-menu-btn { display: flex; }
  .levels-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* ───────── PARTICULES MODE RÊVE ───────── */
#dream-particles {
  position: fixed;
  top: 0; left: 0;
  width: 100vw; height: 100vh;
  pointer-events: none;
  z-index: 1;
  opacity: 0;
  transition: opacity 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}
[data-dream="true"] #dream-particles { opacity: 0.7; }

@media (prefers-reduced-motion: reduce) {
  #dream-particles { display: none !important; }
}

/* ───────── SPA ROUTER ───────── */
.router-container {
  position: relative;
  z-index: 2;
  min-height: 80vh;
  padding: 2.5rem 1.5rem;
  max-width: 1100px;
  margin: 0 auto;
  opacity: 1;
  transition: opacity 0.25s ease;
}
.router-container.loading { opacity: 0.4; }

.route-view {
  animation: dpFadeIn 0.4s ease forwards;
}
@keyframes dpFadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* Adaptation responsive */
@media (max-width: 768px) {
  .router-container { padding: 1.5rem 1rem; }
}