/* ============================================================
   Piano Tiles — 黑白街机掌机风格
   ============================================================ */

/* ===== 变量 ===== */
:root {
  --cabinet-dark: #23262E;
  --cabinet-mid: #3A3F4A;
  --cabinet-light: #4A5060;
  --cabinet-edge: #14161C;
  --track-white: #F4F2ED;
  --track-white-alt: #E8E5DE;
  --track-black: #1B1D22;
  --accent-glow: #7FD8FF;
  --accent-gold: #FFD76A;
  --danger-red: #E74C3C;
  --text-on-dark: #E0E4EC;
  --text-dim: #8B91A1;
  --bg-env: radial-gradient(ellipse at center, #1a1d2a 0%, #0c0d13 100%);
}

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

html, body {
  height: 100%;
  height: 100dvh;
  width: 100%;
  overflow: hidden;
  overscroll-behavior: none;
  touch-action: none;
  background: var(--bg-env);
  font-family: system-ui, -apple-system, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: var(--text-on-dark);
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.noscript-banner {
  padding: 20px;
  text-align: center;
  color: #fff;
  background: #e74c3c;
}

/* ===== 应用容器 ===== */
#game-app {
  height: 100%;
  height: 100dvh;
  width: 100vw;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 12px clamp(16px, 4vw, 40px) clamp(16px, 3vh, 32px);
  gap: 8px;
  overscroll-behavior: none;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(127,216,255,0.05) 0%, transparent 60%),
    radial-gradient(ellipse at 50% 100%, rgba(127,216,255,0.03) 0%, transparent 60%),
    var(--bg-env);
}

/* ===== 机身顶栏 ===== */
.cabinet-topbar {
  width: min(100%, 820px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  background: linear-gradient(180deg, var(--cabinet-mid), var(--cabinet-dark));
  border: 1px solid var(--cabinet-edge);
  border-radius: 14px 14px 0 0;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.06),
    0 2px 8px rgba(0,0,0,0.4);
}

.cab-title {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: 2px;
  background: linear-gradient(180deg, #E0E4EC, #8B91A1);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.cab-tools {
  display: flex;
  gap: 6px;
}

.cab-btn {
  min-width: 36px;
  height: 32px;
  padding: 0 10px;
  border-radius: 8px;
  border: 1px solid rgba(255,255,255,0.08);
  background: linear-gradient(180deg, var(--cabinet-light), var(--cabinet-mid));
  color: var(--text-on-dark);
  font-size: 13px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.08),
    0 1px 2px rgba(0,0,0,0.3);
  transition: transform 0.08s ease, box-shadow 0.08s ease;
  text-decoration: none;
}

.cab-btn:hover {
  transform: translateY(-1px);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.12),
    0 2px 4px rgba(0,0,0,0.4);
}

.cab-btn:active {
  transform: translateY(1px);
  box-shadow: inset 0 2px 4px rgba(0,0,0,0.3);
}

/* ===== 机身主体 ===== */
.cabinet-body {
  width: min(100%, 820px);
  flex: 1;
  display: grid;
  grid-template-columns: 120px 1fr 120px;
  gap: 0;
  background: linear-gradient(180deg, var(--cabinet-dark), #1a1c22);
  border: 1px solid var(--cabinet-edge);
  border-top: none;
  border-bottom: none;
  box-shadow: inset 0 2px 10px rgba(0,0,0,0.5);
  min-height: 400px;
  max-height: calc(100vh - 140px);
  overflow: hidden;
}

/* ===== 左右面板 ===== */
.side-panel {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 16px 10px;
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(0,0,0,0.1));
  border-right: 1px solid rgba(255,255,255,0.04);
}

.side-right {
  border-right: none;
  border-left: 1px solid rgba(255,255,255,0.04);
}

.panel-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 10px 8px;
  border-radius: 10px;
  background: rgba(0,0,0,0.15);
  border: 1px solid rgba(255,255,255,0.05);
}

.panel-label {
  font-size: 11px;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.panel-value {
  font-size: 22px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text-on-dark);
  text-shadow: 0 0 10px rgba(127,216,255,0.15);
}

.combo-num {
  color: var(--accent-glow);
}

.score-num {
  color: var(--accent-gold);
}

.rank-name {
  font-size: 16px;
  color: var(--accent-gold);
}

/* 心形 */
.hearts-row {
  display: flex;
  gap: 6px;
  font-size: 20px;
}

.heart {
  transition: opacity 0.2s, transform 0.2s;
}
.heart-on { color: #E74C3C; text-shadow: 0 0 8px rgba(231,76,60,0.5); }
.heart-off {
  color: #3A3F4A;
  opacity: 0.5;
  transform: scale(0.85);
}

/* ===== 中央舞台 ===== */
.stage-core {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: #0f1014;
}

.tracks-wrap {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

#game-canvas {
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
  border-radius: 4px;
  box-shadow: inset 0 0 30px rgba(0,0,0,0.8);
  touch-action: none;
}

/* 判定线 UI 层覆盖（canvas 也会画一条，这里做辅助） */
.judge-line {
  position: absolute;
  left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent-glow), transparent);
  pointer-events: none;
  box-shadow: 0 0 12px var(--accent-glow);
}

/* 舞台 shake */
.stage-core.shake {
  animation: shake 0.25s;
}
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-4px); }
  40% { transform: translateX(4px); }
  60% { transform: translateX(-3px); }
  80% { transform: translateX(3px); }
}

/* ===== 分数/Combo bump ===== */
.panel-value.bump {
  animation: bump 0.18s ease;
}
@keyframes bump {
  0% { transform: scale(1); }
  50% { transform: scale(1.18); }
  100% { transform: scale(1); }
}

/* ===== 弹窗 ===== */
.modal-layer {
  position: absolute;
  inset: 0;
  background: rgba(15,16,20,0.75);
  backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  animation: fadeIn 0.2s ease;
}
.modal-layer.hidden { display: none; }

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-card {
  background: linear-gradient(180deg, var(--cabinet-mid), var(--cabinet-dark));
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 16px;
  padding: 24px 28px;
  min-width: 280px;
  max-width: 90%;
  box-shadow:
    0 20px 60px rgba(0,0,0,0.6),
    inset 0 1px 0 rgba(255,255,255,0.06);
  text-align: center;
}

.modal-badge {
  font-size: 32px;
  margin-bottom: 10px;
}

.modal-card h2 {
  font-size: 20px;
  margin-bottom: 8px;
  color: var(--text-on-dark);
}

.modal-text {
  font-size: 14px;
  color: var(--text-dim);
  margin-bottom: 18px;
}

.modal-btn-row {
  display: flex;
  gap: 10px;
  justify-content: center;
  flex-wrap: wrap;
}

.score-summary {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
  text-align: left;
}

.summary-line {
  display: flex;
  justify-content: space-between;
  font-size: 14px;
  color: var(--text-dim);
  padding: 4px 0;
  border-bottom: 1px solid rgba(255,255,255,0.05);
}

.summary-line strong {
  color: var(--text-on-dark);
  font-size: 16px;
}

.summary-line .text-highlight {
  color: var(--accent-gold);
  font-size: 20px;
}

.rules-card { text-align: left; }
.rules-body h3 {
  font-size: 14px;
  color: var(--accent-glow);
  margin: 12px 0 6px;
}
.rules-body ul { padding-left: 18px; }
.rules-body li {
  font-size: 13px;
  color: var(--text-dim);
  line-height: 1.7;
}

/* ===== 操作台按钮 ===== */
.arcade-btn {
  min-width: 100px;
  height: 40px;
  padding: 0 18px;
  font-size: 14px;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--cabinet-dark);
  border: none;
  border-radius: 10px;
  background: linear-gradient(180deg, #FFE89A, #FFC83D);
  cursor: pointer;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.5),
    inset 0 -2px 0 rgba(0,0,0,0.12),
    0 2px 6px rgba(0,0,0,0.4);
  transition: transform 0.08s ease, box-shadow 0.08s ease;
}

.arcade-btn:hover {
  transform: translateY(-1px);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.6),
    inset 0 -2px 0 rgba(0,0,0,0.12),
    0 4px 10px rgba(0,0,0,0.5);
}

.arcade-btn:active {
  transform: translateY(2px);
  box-shadow:
    inset 0 2px 4px rgba(0,0,0,0.2),
    0 0 2px rgba(0,0,0,0.3);
}

.arcade-btn--alt {
  background: linear-gradient(180deg, #E8EBF0, #B8BEC8);
  color: var(--cabinet-dark);
}

.arcade-btn--wide {
  min-width: 80px;
  padding: 0 16px;
  height: 36px;
  font-size: 13px;
}

/* ===== 底部操作台 ===== */
.cabinet-controls {
  width: min(100%, 820px);
  display: flex;
  justify-content: center;
  gap: 16px;
  padding: 10px;
  background: linear-gradient(180deg, var(--cabinet-dark), var(--cabinet-mid));
  border: 1px solid var(--cabinet-edge);
  border-top: none;
  border-radius: 0 0 14px 14px;
  box-shadow:
    inset 0 -1px 0 rgba(255,255,255,0.04),
    0 2px 8px rgba(0,0,0,0.4);
}

/* ===== 响应式：窄屏（≤768px）===== */
@media (max-width: 768px) {
  #game-app {
    padding-bottom: clamp(64px, 12vh, 88px);
  }
  .cabinet-body {
    grid-template-columns: 80px 1fr 80px;
  }
  .side-panel {
    padding: 10px 6px;
    gap: 6px;
  }
  .panel-block {
    padding: 6px 4px;
  }
  .panel-value { font-size: 16px; }
  .panel-label { font-size: 9px; }
  .cab-title { font-size: 14px; letter-spacing: 1px; }
  .cabinet-topbar { padding: 6px 10px; }
  .cab-btn { min-width: 30px; height: 28px; font-size: 11px; padding: 0 6px; }
  .arcade-btn { min-width: 80px; height: 36px; font-size: 13px; }
  .modal-card { padding: 18px; min-width: 240px; }
}

/* ===== 响应式：超窄屏（≤420px）—— 面板进一步压缩 ===== */
@media (max-width: 420px) {
  .cabinet-body {
    grid-template-columns: 64px 1fr 64px;
  }
  .hearts-row { font-size: 16px; gap: 4px; }
  .rank-name { font-size: 13px; }
}

/* ===== reduced-motion 降级 ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}