:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #14141f;
  --bg-tertiary: #1e1e2e;
  --text-primary: #ffffff;
  --text-secondary: #a0a0b0;
  --text-muted: #606070;
  --accent: #00d4ff;
  --accent-secondary: #00ff88;
  --danger: #ff4466;
  --focus-ring: #00d4ff;
  --focus-glow: rgba(0, 212, 255, 0.4);
  --radius-md: 12px;
  --radius-sm: 8px;
}

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

html, body {
  width: 600px;
  height: 600px;
  overflow: hidden;
  background: #000;
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  -webkit-font-smoothing: antialiased;
}

#app { width: 100%; height: 100%; position: relative; }

.screen {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  flex-direction: column;
  padding: 24px;
}

.screen.hidden { display: none; }

.focusable {
  transition: all 0.15s ease;
  border: 2px solid transparent;
  cursor: pointer;
  outline: none;
}

.focusable:focus {
  border-color: var(--focus-ring);
  box-shadow: 0 0 20px var(--focus-glow);
}

.hidden { display: none !important; }

/* ==== HEADER ==== */
.header {
  text-align: center;
  margin-bottom: 20px;
}

.header.sm { margin-bottom: 16px; }

.title {
  font-size: 56px;
  font-weight: 800;
  letter-spacing: 6px;
  color: var(--text-primary);
  background: linear-gradient(180deg, #fff 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.title.sm { font-size: 36px; letter-spacing: 4px; }

.subtitle {
  font-size: 18px;
  color: var(--text-secondary);
  margin-top: 4px;
  letter-spacing: 1px;
}

/* ==== HOME ==== */
.best-banner {
  display: flex;
  align-items: baseline;
  justify-content: center;
  gap: 10px;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 16px;
  margin-bottom: 20px;
  border: 1px solid var(--bg-tertiary);
}

.best-label {
  font-size: 18px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 2px;
}

.best-value {
  font-size: 42px;
  font-weight: 800;
  color: var(--accent-secondary);
  font-variant-numeric: tabular-nums;
}

.best-unit {
  font-size: 18px;
  color: var(--text-muted);
}

.menu {
  display: flex;
  flex-direction: column;
  gap: 12px;
  flex: 1;
}

.menu-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-secondary);
  color: var(--text-primary);
  padding: 18px 22px;
  border-radius: var(--radius-md);
  font-size: 22px;
  font-weight: 600;
  min-height: 64px;
  border: 2px solid transparent;
  text-align: left;
  width: 100%;
}

.menu-item.primary {
  background: linear-gradient(135deg, #0066aa 0%, #00aabb 100%);
}

.menu-item.compact {
  padding: 14px 18px;
  font-size: 18px;
  min-height: 50px;
}

.menu-icon {
  font-size: 28px;
  width: 36px;
  text-align: center;
  color: var(--accent);
}

.menu-item.primary .menu-icon { color: #fff; }

.menu-text { flex: 1; }

.hint {
  text-align: center;
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 12px;
  letter-spacing: 1px;
}

/* ==== PLAY SCREEN ==== */
#play { padding: 0; }

.play-stage {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  transition: background 0.05s ease;
  position: relative;
}

.play-stage.waiting { background: #1a0a14; }
.play-stage.go { background: #00ff88; }
.play-stage.early { background: #2a0a0f; }
.play-stage.result { background: var(--bg-secondary); }

.play-content {
  text-align: center;
  padding: 32px;
}

.play-headline {
  font-size: 72px;
  font-weight: 800;
  letter-spacing: 4px;
  color: var(--text-primary);
  line-height: 1;
}

.play-stage.go .play-headline {
  color: #001a0d;
  font-size: 96px;
}

.play-stage.early .play-headline {
  color: var(--danger);
}

.play-sub {
  margin-top: 16px;
  font-size: 22px;
  color: var(--text-secondary);
  letter-spacing: 1px;
}

.play-stage.go .play-sub {
  color: #002a18;
  font-weight: 600;
}

.result-value {
  font-size: 96px;
  font-weight: 800;
  color: var(--accent-secondary);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.result-unit {
  font-size: 28px;
  color: var(--text-secondary);
  margin-left: 8px;
}

.result-tier {
  margin-top: 12px;
  font-size: 22px;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-weight: 700;
}

.result-tier.elite { color: var(--accent-secondary); }
.result-tier.sharp { color: var(--accent); }
.result-tier.average { color: var(--text-secondary); }

.play-actions {
  display: flex;
  gap: 12px;
  padding: 16px;
  background: var(--bg-primary);
}

.play-actions.hidden { display: none; }

.play-btn {
  flex: 1;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  padding: 16px;
  border-radius: var(--radius-md);
  font-size: 20px;
  font-weight: 600;
  min-height: 60px;
  border: 2px solid transparent;
}

.play-btn:first-child {
  background: linear-gradient(135deg, #0066aa 0%, #00aabb 100%);
}

/* ==== STATS ==== */
.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-bottom: 16px;
}

.stat-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  border: 1px solid var(--bg-tertiary);
}

.stat-label {
  font-size: 13px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 4px;
}

.stat-value {
  font-size: 36px;
  font-weight: 800;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.stat-card:first-child .stat-value { color: var(--accent-secondary); }

.stat-unit {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 2px;
}

.recent {
  flex: 1;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  margin-bottom: 12px;
  border: 1px solid var(--bg-tertiary);
  overflow: hidden;
}

.recent-label {
  font-size: 13px;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 8px;
}

.recent-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.recent-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 16px;
  padding: 6px 10px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
}

.recent-rank {
  color: var(--text-muted);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.recent-time {
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text-primary);
}

.recent-empty {
  color: var(--text-muted);
  font-size: 14px;
  text-align: center;
  padding: 12px;
}

.stats-actions {
  display: flex;
  gap: 10px;
}

.stats-actions .menu-item { flex: 1; justify-content: center; }

/* ==== HELP ==== */
.help-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
  flex: 1;
}

.help-list li {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--bg-secondary);
  padding: 14px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--bg-tertiary);
}

.step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent);
  color: #001a22;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 18px;
  flex-shrink: 0;
}

.step-text {
  font-size: 19px;
  color: var(--text-primary);
}

.help-tier {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  margin-bottom: 12px;
  border: 1px solid var(--bg-tertiary);
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.tier {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 16px;
  color: var(--text-secondary);
}

.tier-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}

.tier-dot.good { background: var(--accent-secondary); }
.tier-dot.ok { background: var(--accent); }
.tier-dot.slow { background: var(--text-muted); }

.help-actions { display: flex; }
.help-actions .menu-item { flex: 1; justify-content: center; }