/* ===== Reset & Base ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg: #0a0a0f;
  --surface: #14141f;
  --border: #2a2a3a;
  --pink: #ff2d78;
  --cyan: #00e5ff;
  --gold: #ffd700;
  --text: #e8e8f0;
  --text-dim: #8888aa;
}

body {
  font-family: 'Segoe UI', 'Hiragino Sans', 'Noto Sans JP', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  align-items: center;
  user-select: none;
  -webkit-user-select: none;
  overflow-x: hidden;
}

/* ===== Header ===== */
.header {
  text-align: center;
  padding: 16px 8px 8px;
  width: 100%;
  max-width: 480px;
}
.header h1 {
  font-size: 1.6rem;
  background: linear-gradient(135deg, var(--pink), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 2px;
}
.header .subtitle {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 2px;
}

/* ===== Stats Bar ===== */
.stats-bar {
  display: flex;
  gap: 8px;
  justify-content: center;
  padding: 8px;
  width: 100%;
  max-width: 480px;
}
.stat-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 14px;
  text-align: center;
  flex: 1;
  min-width: 0;
}
.stat-box .label {
  font-size: 0.65rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.stat-box .value {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--cyan);
  margin-top: 2px;
}

/* ===== Controls Top ===== */
.controls-top {
  display: flex;
  gap: 8px;
  padding: 4px 8px 8px;
  width: 100%;
  max-width: 480px;
  justify-content: center;
}
.btn {
  background: var(--surface);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.btn:hover { border-color: var(--cyan); color: var(--cyan); }
.btn:active { transform: scale(0.95); }
.btn.primary {
  background: linear-gradient(135deg, var(--pink), #cc1155);
  border-color: var(--pink);
  color: #fff;
  font-weight: 700;
}
.btn.primary:hover { filter: brightness(1.15); }
.btn.big { padding: 12px 32px; font-size: 1rem; }

/* ===== Canvas ===== */
.canvas-wrapper {
  padding: 8px;
  width: 100%;
  max-width: 480px;
  display: flex;
  justify-content: center;
}
#maze-canvas {
  border: 2px solid var(--cyan);
  border-radius: 8px;
  box-shadow: 0 0 16px rgba(0, 229, 255, 0.3), inset 0 0 16px rgba(0, 229, 255, 0.05);
  background: var(--surface);
  max-width: 100%;
  touch-action: none;
}

/* ===== D-Pad ===== */
.dpad {
  display: grid;
  grid-template-columns: 56px 56px 56px;
  grid-template-rows: 56px 56px 56px;
  gap: 4px;
  padding: 12px 0;
  justify-content: center;
  align-items: center;
}
.dpad-btn {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.1s;
  -webkit-tap-highlight-color: transparent;
}
.dpad-btn:active:not(:disabled) {
  background: var(--cyan);
  color: var(--bg);
  border-color: var(--cyan);
  transform: scale(0.9);
}
.dpad-btn:disabled {
  opacity: 0.4;
  cursor: default;
}
.dpad-btn.up   { grid-column: 2; grid-row: 1; }
.dpad-btn.left { grid-column: 1; grid-row: 2; }
.dpad-btn.center { grid-column: 2; grid-row: 2; border-color: var(--pink); }
.dpad-btn.right { grid-column: 3; grid-row: 2; }
.dpad-btn.down { grid-column: 2; grid-row: 3; }

@media (min-width: 768px) {
  .dpad { display: none; }
}

/* ===== Overlay ===== */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  animation: fadeIn 0.3s ease;
}
.overlay[hidden] { display: none; }
.overlay-card {
  background: var(--surface);
  border: 2px solid var(--cyan);
  border-radius: 16px;
  padding: 28px 24px;
  text-align: center;
  max-width: 340px;
  width: 90%;
  box-shadow: 0 0 40px rgba(0, 229, 255, 0.2);
  animation: popIn 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.overlay-card h2 {
  font-size: 1.5rem;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--gold), var(--pink));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.overlay-stats {
  margin-bottom: 20px;
}
.os-row {
  display: flex;
  justify-content: space-between;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}
.os-row.best span:last-child { color: var(--gold); font-weight: 700; }
.overlay-card .btn { margin: 6px 4px; }

/* ===== Patreon CTA ===== */
.patreon-cta {
  padding: 16px 8px;
  width: 100%;
  max-width: 480px;
}
.patreon-cta a {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 20px;
  background: linear-gradient(135deg, var(--pink), #cc1155);
  color: #fff;
  text-decoration: none;
  border-radius: 10px;
  font-weight: 700;
  font-size: 0.95rem;
  transition: filter 0.15s;
}
.patreon-cta a:hover { filter: brightness(1.15); }
.patreon-icon { font-size: 1.3rem; }

/* ===== How to Play ===== */
.how-to-play {
  width: 100%;
  max-width: 480px;
  padding: 0 8px 8px;
}
.how-to-play summary {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 16px;
  cursor: pointer;
  font-weight: 600;
  color: var(--text-dim);
  transition: color 0.15s;
}
.how-to-play summary:hover { color: var(--cyan); }
.htp-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 8px 8px;
  padding: 14px 16px;
  font-size: 0.85rem;
  line-height: 1.6;
  color: var(--text-dim);
}
.htp-content p { margin-bottom: 10px; }
.htp-content p:last-child { margin-bottom: 0; }
.htp-content strong { color: var(--text); }

/* ===== Footer ===== */
.footer {
  text-align: center;
  padding: 16px 8px 24px;
  font-size: 0.75rem;
  color: var(--text-dim);
}
.footer a {
  color: var(--pink);
  text-decoration: none;
}
.footer a:hover { text-decoration: underline; }

/* ===== Animations ===== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes popIn {
  from { opacity: 0; transform: scale(0.8); }
  to { opacity: 1; transform: scale(1); }
}
@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}