/* BlockBreaker - ネオンレトロ・モダンデザイン */
:root {
  --bg: #0a0e27;
  --bg2: #0d1133;
  --cyan: #00d9ff;
  --cyan-dim: rgba(0,217,255,.15);
  --magenta: #ff006e;
  --yellow: #ffbe0b;
  --green: #00ff9f;
  --white: #e8eaf6;
  --gray: #3d4270;
  --panel: rgba(13,17,51,.92);
  --glow-c: 0 0 8px #00d9ff, 0 0 20px rgba(0,217,255,.4);
  --glow-m: 0 0 8px #ff006e, 0 0 20px rgba(255,0,110,.4);
  --glow-y: 0 0 8px #ffbe0b, 0 0 20px rgba(255,190,11,.4);
  --radius: 10px;
  --font: 'Segoe UI', 'Hiragino Sans', sans-serif;
  --font-mono: 'Courier New', monospace;
}

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

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--white);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
  touch-action: none;
}

#bb-app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100svh;
  max-height: 100svh;
  overflow: hidden;
  padding-bottom: env(safe-area-inset-bottom, 0);
}

/* ====== HEADER ====== */
.bb-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 6px 12px;
  background: var(--bg2);
  border-bottom: 1px solid var(--gray);
  flex-shrink: 0;
}
.bb-brand { display: flex; align-items: center; gap: 6px; }
.bb-brand-icon { font-size: 1.2rem; }
.bb-brand-name {
  font-size: .95rem;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--cyan);
  text-shadow: var(--glow-c);
}
.bb-header-controls { display: flex; gap: 6px; }
.bb-icon-btn {
  background: none;
  border: 1px solid var(--gray);
  border-radius: 6px;
  color: var(--white);
  cursor: pointer;
  font-size: 1.1rem;
  padding: 4px 8px;
  transition: border-color .2s;
}
.bb-icon-btn:hover { border-color: var(--cyan); }

/* ====== SCORE BAR ====== */
.bb-scorebar {
  display: flex;
  justify-content: space-around;
  align-items: center;
  padding: 4px 8px;
  background: var(--bg2);
  border-bottom: 1px solid var(--gray);
  flex-shrink: 0;
  flex-wrap: wrap;
  gap: 4px;
}
.bb-stat { display: flex; flex-direction: column; align-items: center; min-width: 60px; }
.bb-stat-label {
  font-size: .6rem;
  color: var(--cyan);
  letter-spacing: .1em;
  font-family: var(--font-mono);
}
.bb-stat-value {
  font-size: 1rem;
  font-weight: 700;
  font-family: var(--font-mono);
  color: var(--yellow);
  text-shadow: var(--glow-y);
}

/* ====== CANVAS AREA ====== */
.bb-canvas-wrap {
  position: relative;
  flex: 1 1 0;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: radial-gradient(ellipse at center, #0f1435 0%, var(--bg) 100%);
  padding: 0 0 max(8px, env(safe-area-inset-bottom, 0));
  min-height: 0;
}

#bb-canvas {
  display: block;
  cursor: none;
  touch-action: none;
}

/* ====== OVERLAYS ====== */
.bb-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(10,14,39,.85);
  z-index: 10;
}
.bb-overlay.bb-hidden { display: none; }

.bb-overlay-box {
  background: var(--panel);
  border: 1px solid var(--cyan);
  border-radius: 16px;
  padding: 28px 32px;
  max-width: 340px;
  width: 90%;
  text-align: center;
  box-shadow: 0 0 30px rgba(0,217,255,.2), 0 8px 32px rgba(0,0,0,.5);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.bb-overlay-icon { font-size: 2.5rem; line-height: 1; }
.bb-overlay-title {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: .12em;
  color: var(--cyan);
  text-shadow: var(--glow-c);
  font-family: var(--font-mono);
}
.bb-overlay-title.bb-red { color: var(--magenta); text-shadow: var(--glow-m); }
.bb-overlay-title.bb-rainbow {
  background: linear-gradient(90deg, var(--cyan), var(--yellow), var(--magenta));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.bb-overlay-info {
  font-size: .9rem;
  color: var(--white);
  line-height: 1.6;
}

/* ====== TITLE SCREEN ====== */
.bb-title-logo { display: flex; flex-direction: column; gap: 4px; }
.bb-title-text {
  font-size: 1.8rem;
  font-weight: 900;
  letter-spacing: .15em;
  color: var(--white);
  font-family: var(--font-mono);
  text-shadow: 0 0 10px rgba(255,255,255,.3);
}
.bb-title-accent { color: var(--cyan); text-shadow: var(--glow-c); }
.bb-title-sub { font-size: .78rem; color: var(--gray); letter-spacing: .06em; }

/* ====== BUTTONS ====== */
.bb-btn-primary {
  width: 100%;
  padding: 11px 20px;
  background: linear-gradient(135deg, var(--cyan), #0099cc);
  border: none;
  border-radius: var(--radius);
  color: #0a0e27;
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: .08em;
  cursor: pointer;
  box-shadow: var(--glow-c);
  transition: opacity .2s, transform .1s;
}
.bb-btn-primary:hover { opacity: .9; transform: translateY(-1px); }
.bb-btn-primary:active { transform: translateY(0); }

.bb-btn-secondary {
  width: 100%;
  padding: 9px 20px;
  background: transparent;
  border: 1px solid var(--gray);
  border-radius: var(--radius);
  color: var(--white);
  font-size: .9rem;
  cursor: pointer;
  transition: border-color .2s, color .2s;
}
.bb-btn-secondary:hover { border-color: var(--cyan); color: var(--cyan); }

/* ====== DIFFICULTY ====== */
.bb-difficulty-select { width: 100%; }
.bb-select-label { font-size: .75rem; color: var(--gray); margin-bottom: 8px; }
.bb-diff-btns { display: flex; gap: 6px; justify-content: center; }
.bb-diff-btn {
  flex: 1;
  padding: 7px 4px;
  background: transparent;
  border: 1px solid var(--gray);
  border-radius: 6px;
  color: var(--white);
  font-size: .8rem;
  font-weight: 700;
  cursor: pointer;
  letter-spacing: .05em;
  transition: all .2s;
}
.bb-diff-btn:hover, .bb-diff-btn.bb-diff-active {
  background: var(--cyan-dim);
  border-color: var(--cyan);
  color: var(--cyan);
  box-shadow: var(--glow-c);
}

/* ====== RANKING ====== */
.bb-ranking-list {
  width: 100%;
  max-height: 220px;
  overflow-y: auto;
}
.bb-ranking-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 8px;
  border-bottom: 1px solid var(--gray);
  font-family: var(--font-mono);
  font-size: .88rem;
}
.bb-rank-no { width: 24px; color: var(--gray); }
.bb-rank-no.bb-gold { color: var(--yellow); font-weight: 700; text-shadow: var(--glow-y); }
.bb-rank-score { flex: 1; color: var(--cyan); font-weight: 700; }
.bb-rank-diff { font-size: .72rem; color: var(--gray); }
.bb-rank-date { font-size: .7rem; color: var(--gray); }
.bb-ranking-empty { color: var(--gray); font-size: .85rem; padding: 16px; }

/* ====== SETTINGS ====== */
.bb-setting-row {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  justify-content: space-between;
  flex-wrap: wrap;
}
.bb-setting-label { font-size: .85rem; color: var(--gray); min-width: 50px; }

.bb-toggle-btn {
  padding: 5px 14px;
  background: var(--cyan-dim);
  border: 1px solid var(--cyan);
  border-radius: 20px;
  color: var(--cyan);
  font-size: .8rem;
  font-weight: 700;
  cursor: pointer;
  transition: all .2s;
}
.bb-toggle-btn.bb-off {
  background: transparent;
  border-color: var(--gray);
  color: var(--gray);
}

.bb-slider {
  flex: 1;
  min-width: 80px;
  accent-color: var(--cyan);
  cursor: pointer;
}

/* ====== PAUSE HINT ====== */
.bb-pause-hint {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--panel);
  border: 1px solid var(--yellow);
  color: var(--yellow);
  border-radius: 8px;
  padding: 10px 20px;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: .06em;
  text-shadow: var(--glow-y);
  z-index: 5;
  pointer-events: none;
}
.bb-pause-hint.bb-hidden { display: none; }

/* ====== HINT BAR ====== */
.bb-hint-bar {
  padding: 4px 12px;
  background: var(--bg2);
  border-top: 1px solid var(--gray);
  font-size: .7rem;
  color: var(--gray);
  text-align: center;
  flex-shrink: 0;
}
.bb-hint-sp { display: none; }

/* ====== LICENSE BANNER ====== */
.bb-license-banner {
  background: rgba(255,190,11,.15);
  border-bottom: 1px solid var(--yellow);
  color: var(--yellow);
  padding: 4px 12px;
  font-size: .78rem;
  text-align: center;
}

/* ====== RESPONSIVE ====== */
@media (max-width: 600px) {
  .bb-brand-name { font-size: .82rem; }
  .bb-stat-value { font-size: .88rem; }
  .bb-overlay-box { padding: 20px 18px; }
  .bb-hint-pc { display: none; }
  .bb-hint-sp { display: inline; }
  .bb-title-text { font-size: 1.4rem; }
}
@media (pointer: coarse) {
  #bb-canvas { cursor: default; }
}