/* ===== 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: 520px;
}
.header h1 {
  font-size: 1.5rem;
  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: 0.72rem;
  color: var(--text-dim);
  margin-top: 2px;
}

/* ===== Score Bar ===== */
.score-bar {
  display: flex;
  gap: 8px;
  justify-content: center;
  margin: 8px 0;
  width: 100%;
  max-width: 520px;
  flex-wrap: wrap;
}
.score-box {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 6px 14px;
  text-align: center;
  min-width: 72px;
}
.score-box .label {
  font-size: 0.6rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
}
.score-box .value {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--cyan);
}
.score-box .value.best { color: var(--gold); }
.score-box .value.lives { font-size: 1rem; color: var(--pink); }

/* ===== Controls ===== */
.controls {
  display: flex;
  gap: 8px;
  margin: 6px 0;
  flex-wrap: wrap;
  justify-content: center;
  max-width: 520px;
}
.btn {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 14px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 4px;
}
.btn:hover { border-color: var(--pink); background: #1a1a2e; }
.btn:active { transform: scale(0.95); }
.btn.primary {
  background: linear-gradient(135deg, var(--pink), #cc1155);
  border-color: var(--pink);
  font-weight: 600;
}
.btn.primary:hover { filter: brightness(1.15); }

/* ===== Canvas ===== */
.canvas-wrapper {
  position: relative;
  margin: 8px 0;
  border: 2px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  background: var(--surface);
  box-shadow: 0 0 30px rgba(0, 229, 255, 0.08), 0 0 60px rgba(255, 45, 120, 0.05);
}

#game-canvas {
  display: block;
  background: #0c0c18;
}

/* ===== Overlay ===== */
.overlay {
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 15, 0.88);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 10;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
  padding: 20px;
}
.overlay.active {
  opacity: 1;
  pointer-events: all;
}
.overlay h2 {
  font-size: 1.5rem;
  margin-bottom: 8px;
  text-align: center;
  background: linear-gradient(135deg, var(--pink), var(--cyan));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.overlay h2 .en {
  font-size: 0.85rem;
  display: block;
}
.overlay .overlay-desc {
  font-size: 0.85rem;
  color: var(--text-dim);
  margin-bottom: 16px;
  text-align: center;
  line-height: 1.6;
}
.overlay .overlay-desc .en {
  font-size: 0.72rem;
}
.overlay .final-score {
  font-size: 1.1rem;
  color: var(--cyan);
  margin-bottom: 8px;
}
.overlay .final-detail {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-bottom: 12px;
}
.overlay .btn { margin: 4px; }

/* ===== Combo Display ===== */
.combo-display {
  text-align: center;
  min-height: 24px;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--gold);
  transition: opacity 0.3s;
}

/* ===== Patreon CTA ===== */
.patreon-cta {
  margin: 12px 0;
  text-align: center;
}
.patreon-cta a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: linear-gradient(135deg, #ff424d, #ff2d78);
  color: #fff;
  text-decoration: none;
  padding: 10px 20px;
  border-radius: 24px;
  font-weight: 700;
  font-size: 0.85rem;
  transition: all 0.2s;
  box-shadow: 0 4px 15px rgba(255,45,120,0.3);
}
.patreon-cta a:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(255,45,120,0.4); }
.patreon-cta .cta-sub {
  font-size: 0.7rem;
  color: var(--text-dim);
  margin-top: 4px;
}

/* ===== How to Play ===== */
.how-to-play {
  max-width: 520px;
  width: 100%;
  padding: 0 16px;
  margin-bottom: 16px;
}
.how-to-play details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 12px;
}
.how-to-play summary {
  cursor: pointer;
  font-size: 0.8rem;
  color: var(--cyan);
  font-weight: 600;
}
.how-to-play .content {
  font-size: 0.75rem;
  color: var(--text-dim);
  margin-top: 8px;
  line-height: 1.6;
}

/* ===== Footer ===== */
.footer {
  text-align: center;
  padding: 12px;
  color: var(--text-dim);
  font-size: 0.7rem;
  max-width: 520px;
}
.footer a { color: var(--pink); text-decoration: none; }
.footer a:hover { text-decoration: underline; }

/* ===== Responsive ===== */
@media (max-width: 440px) {
  .header h1 { font-size: 1.2rem; }
  .score-box { padding: 4px 8px; min-width: 60px; }
  .score-box .value { font-size: 1rem; }
}