*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: 'DM Sans', system-ui, sans-serif;
  overflow: hidden;
}

/* ── Layout ── */
.page {
  display: flex;
  flex-direction: column;
  height: 100vh;
}

/* ── Header ── */
.game-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
  padding: 0 1.25rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border-strong);
  flex-shrink: 0;
  position: relative;
}

.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.875rem;
  font-family: 'JetBrains Mono', monospace;
  transition: color 0.2s;
  z-index: 1;
}
.back-btn:hover,
.back-btn:focus-visible { color: var(--accent); }
.back-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; border-radius: 4px; }
.back-btn svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

.game-title {
  font-family: 'Chakra Petch', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  z-index: 1;
}

.game-tags {
  display: flex;
  gap: 0.4rem;
}

.tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.63rem;
  background: rgba(var(--accent-rgb), 0.18);
  border: 1px solid rgba(var(--accent-rgb), 0.35);
  color: var(--accent-hover);
  padding: 0.15rem 0.5rem;
  border-radius: 999px;
}

.fullscreen-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--surface-raised);
  border: 1px solid var(--border-strong);
  border-radius: 6px;
  color: var(--text-muted);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
}
.fullscreen-btn:hover { color: var(--accent); border-color: var(--accent); }
.fullscreen-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.fullscreen-btn svg { width: 16px; height: 16px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }

/* ── Canvas area ── */
.canvas-area {
  position: relative;
  flex: 1;
  overflow: hidden;
  background: #000;
}

#canvas {
  display: block;
  width: 100%;
  height: 100%;
  outline: none;
}

/* ── Loader overlay ── */
#loader {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  background: var(--bg);
  z-index: 20;
  transition: opacity 0.5s ease;
}
#loader.fade-out { opacity: 0; pointer-events: none; }

.loader-ring {
  position: relative;
  width: 64px;
  height: 64px;
}
.loader-ring svg {
  width: 64px;
  height: 64px;
  transform: rotate(-90deg);
}
.loader-ring .track {
  fill: none;
  stroke: var(--border-strong);
  stroke-width: 4;
}
.loader-ring .fill {
  fill: none;
  stroke: var(--accent);
  stroke-width: 4;
  stroke-linecap: round;
  stroke-dasharray: 163; /* 2π × r26 ≈ 163 */
  stroke-dashoffset: 163;
  transition: stroke-dashoffset 0.3s ease;
}
.loader-ring.indeterminate .fill {
  animation: arc-spin 1.2s linear infinite;
  stroke-dashoffset: 40;
}
@keyframes arc-spin {
  from { transform: rotate(0deg); }
  to   { transform: rotate(360deg); }
}
.loader-ring.indeterminate svg {
  transform-origin: center;
  animation: ring-rotate 1.4s linear infinite;
}
@keyframes ring-rotate {
  to { transform: rotate(360deg); }
}

.loader-info {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  text-align: center;
}

.loader-name {
  font-family: 'Chakra Petch', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--text);
}

.loader-status {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-muted);
  min-height: 1.2em;
}

/* ── Barre de progression ── */
.progress-track {
  width: 220px;
  height: 3px;
  background: var(--border-strong);
  border-radius: 99px;
  overflow: hidden;
}
.progress-fill {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--accent-hover));
  border-radius: 99px;
  transition: width 0.25s ease;
}

/* ── État d'erreur ── */
#error-state {
  position: absolute;
  inset: 0;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  background: var(--bg);
  z-index: 20;
  padding: 2rem;
  text-align: center;
}
#error-state.visible { display: flex; }

.error-icon {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: rgba(239, 68, 68, 0.12);
  border: 1px solid rgba(239, 68, 68, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ef4444;
  font-size: 1.3rem;
}

.error-title {
  font-family: 'Chakra Petch', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

.error-msg {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--text-muted);
  max-width: 440px;
  line-height: 1.6;
  white-space: pre-line;
}

.btn-back-lg {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
  padding: 0.55rem 1.1rem;
  background: var(--surface-raised);
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  color: var(--text);
  text-decoration: none;
  font-size: 0.875rem;
  font-family: 'JetBrains Mono', monospace;
  transition: border-color 0.2s, color 0.2s;
}
.btn-back-lg:hover { border-color: var(--accent); color: var(--accent); }

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  .loader-ring.indeterminate .fill,
  .loader-ring.indeterminate svg { animation: none; }
  #loader { transition: none; }
  .progress-fill { transition: none; }
}

/* ── Mobile ── */
@media (max-width: 480px) {
  .game-title { font-size: 0.8rem; }
  .game-tags  { display: none; }
}