/* =========================================================
   数字华容道 · 黑胡桃木与黄铜雕刻美学风格样式
   ========================================================= */

:root {
  --bg-dark: #120e0b;
  --bg-panel: #1e1712;
  --wood-rim: #3d2c1e;
  --wood-casing: #2b1d14;
  --wood-slot: #150e09;
  --wood-tile: #443021;
  --wood-tile-top: #553e2c;
  --wood-tile-bot: #332317;

  --brass-bright: #ffd24d;
  --brass-main: #d4af37;
  --brass-dark: #8c6a1e;
  --brass-glow: rgba(212, 175, 55, 0.35);

  --text-main: #ecdcc8;
  --text-dim: #a6907d;
  --text-gold: #f7d277;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

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

html, body {
  width: 100%;
  height: 100%;
  background-color: var(--bg-dark);
  background-image: 
    radial-gradient(ellipse at 50% 15%, #2a1f18 0%, #120e0b 80%),
    radial-gradient(circle at 85% 85%, #221711 0%, transparent 50%);
  color: var(--text-main);
  font-family: var(--font-family);
  overscroll-behavior: none;
  -webkit-font-smoothing: antialiased;
}

#game-app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding: 0 16px;
}

/* ================= 顶边一体化紧凑控制栏 ================= */
#stage-bar {
  max-width: 1000px;
  width: 100%;
  margin: 12px auto 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(30, 23, 18, 0.75);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(140, 106, 30, 0.3);
  border-radius: var(--radius-md);
  padding: 6px 14px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
}

.bar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

#stage-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--brass-bright);
  letter-spacing: 1px;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.8);
}

.bar-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(43, 29, 20, 0.85);
  border: 1px solid var(--brass-dark);
  color: var(--text-gold);
  border-radius: var(--radius-sm);
  padding: 4px 10px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.bar-btn:hover {
  background: rgba(68, 48, 33, 0.95);
  border-color: var(--brass-bright);
  transform: translateY(-1px);
}

.bar-btn:active {
  transform: translateY(1px);
}

.stage-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* ================= 主机台双翼布局 ================= */
#stage-core {
  max-width: 1000px;
  width: 100%;
  margin: 10px auto 20px;
  flex: 1;
  display: grid;
  grid-template-columns: 210px 1fr 210px;
  gap: 20px;
  align-items: start;
}

.cabinet-wing {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.panel-card {
  background: linear-gradient(180deg, #241a13 0%, #1a120d 100%);
  border: 1px solid rgba(140, 106, 30, 0.35);
  border-radius: var(--radius-md);
  padding: 14px;
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.45);
}

.card-header {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--brass-bright);
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 10px;
  border-bottom: 1px solid rgba(140, 106, 30, 0.25);
  padding-bottom: 4px;
}

/* 按钮组与选项卡 */
.mode-tabs, .size-tabs {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tab-btn {
  background: rgba(40, 27, 18, 0.9);
  border: 1px solid rgba(140, 106, 30, 0.4);
  color: var(--text-dim);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  text-align: center;
  transition: all 0.2s ease;
}

.tab-btn:hover {
  background: rgba(60, 42, 28, 0.95);
  color: var(--text-main);
  border-color: var(--brass-main);
}

.tab-btn.active {
  background: linear-gradient(180deg, #533923 0%, #3a2617 100%);
  color: var(--brass-bright);
  border-color: var(--brass-bright);
  box-shadow: 0 0 10px var(--brass-glow);
}

/* 纪录卡片 */
.record-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  font-size: 0.85rem;
}

.record-lbl {
  color: var(--text-dim);
}

.record-val {
  color: var(--brass-bright);
  font-family: var(--font-mono);
  font-weight: 700;
}

/* 仪表卡片 */
.meter-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.meter-item {
  background: #110b07;
  border: 1px solid rgba(140, 106, 30, 0.25);
  border-radius: var(--radius-sm);
  padding: 8px 10px;
  text-align: center;
  box-shadow: inset 0 2px 6px rgba(0, 0, 0, 0.6);
}

.meter-title {
  font-size: 0.75rem;
  color: var(--text-dim);
  letter-spacing: 0.5px;
}

.meter-digit {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--brass-bright);
  font-family: var(--font-mono);
  margin-top: 2px;
}

/* 实体按键卡片 */
.actions-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.act-btn {
  width: 100%;
  padding: 10px;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: none;
  transition: transform 0.15s ease, filter 0.15s ease, box-shadow 0.15s ease;
  user-select: none;
}

.act-btn:hover {
  transform: translateY(-2px);
  filter: brightness(1.1);
}

.act-btn:active {
  transform: translateY(2px);
}

.act-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  transform: none;
  filter: none;
}

.brass-btn {
  background: linear-gradient(180deg, #aa8222 0%, #785910 100%);
  color: #fff8e7;
  border: 1px solid var(--brass-bright);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.5);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.8);
}

.wood-btn {
  background: linear-gradient(180deg, #443021 0%, #2b1d14 100%);
  color: var(--text-main);
  border: 1px solid rgba(140, 106, 30, 0.4);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.5);
}

.gold-btn {
  background: linear-gradient(180deg, #f0c342 0%, #b8860b 100%);
  color: #271703;
  font-weight: 800;
  border: 1px solid #ffe680;
  box-shadow: 0 4px 12px rgba(212, 175, 55, 0.4);
}

/* ================= 中央实木棋盒主舞台 ================= */
#center-stage {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

#wood-casing {
  background: radial-gradient(circle at 35% 25%, #463121 0%, #24160d 100%);
  border: 3px solid #7d5a2c;
  border-radius: var(--radius-lg);
  padding: 14px;
  box-shadow: 
    0 16px 36px rgba(0, 0, 0, 0.8),
    inset 0 2px 4px rgba(255, 255, 255, 0.15),
    inset 0 -4px 8px rgba(0, 0, 0, 0.6);
  position: relative;
}

#brass-rim {
  background: #110a06;
  border: 2px solid #5a4120;
  border-radius: calc(var(--radius-lg) - 4px);
  padding: 8px;
  box-shadow: inset 0 4px 14px rgba(0, 0, 0, 0.9);
}

/* 棋盘主网格 */
#puzzle-board {
  position: relative;
  width: 440px;
  height: 440px;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  background: var(--wood-slot);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: inset 0 0 16px #000;
}

/* 棋盘内每一个数字滑块 */
.puzzle-tile {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--wood-tile-top) 0%, var(--wood-tile-bot) 100%);
  border: 1.5px solid #825e30;
  border-radius: var(--radius-sm);
  color: var(--brass-bright);
  font-family: var(--font-family);
  font-weight: 800;
  cursor: pointer;
  user-select: none;
  box-shadow: 
    0 4px 8px rgba(0, 0, 0, 0.5),
    inset 0 1px 2px rgba(255, 255, 255, 0.2),
    inset 0 -2px 4px rgba(0, 0, 0, 0.4);
  transition: left 0.14s cubic-bezier(0.2, 0.8, 0.3, 1), 
              top 0.14s cubic-bezier(0.2, 0.8, 0.3, 1),
              transform 0.1s ease,
              box-shadow 0.2s ease,
              border-color 0.2s ease;
  z-index: 2;
}

.puzzle-tile:hover {
  filter: brightness(1.08);
  border-color: var(--brass-bright);
}

.puzzle-tile:active {
  transform: scale(0.97);
}

/* 字体字号依阶数适配 */
.size-3 .puzzle-tile { font-size: 2.2rem; }
.size-4 .puzzle-tile { font-size: 1.8rem; }
.size-5 .puzzle-tile { font-size: 1.4rem; }

/* 正确归位状态：温润金光漫反射，绝不用救生圈硬描边 */
.puzzle-tile.is-home {
  box-shadow: 
    0 4px 8px rgba(0, 0, 0, 0.5),
    inset 0 0 12px rgba(255, 215, 0, 0.35),
    inset 0 1px 2px rgba(255, 255, 255, 0.3);
  text-shadow: 0 0 8px rgba(255, 215, 0, 0.6);
  border-color: #d4af37;
}

/* 空格槽位指示（可选） */
.blank-slot {
  position: absolute;
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.8);
  border-radius: var(--radius-sm);
  z-index: 1;
}

/* ================= 移动端专属适配 ================= */
.mobile-only {
  display: none;
}

@media (max-width: 899px) {
  #stage-core {
    grid-template-columns: 1fr;
    gap: 14px;
    padding-bottom: max(72px, calc(20px + env(safe-area-inset-bottom))); /* 广告安全避让区 */
  }

  .cabinet-wing {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 10px;
    width: 100%;
  }

  #right-panel {
    order: 3;
  }

  #left-panel {
    order: 2;
  }

  #center-stage {
    order: 1;
    width: 100%;
  }

  #puzzle-board {
    width: min(88vw, 380px);
    height: min(88vw, 380px);
  }

  .mobile-only {
    display: flex;
  }

  #mobile-hud {
    width: 100%;
    max-width: 380px;
    display: flex;
    justify-content: space-around;
    align-items: center;
    background: rgba(30, 23, 18, 0.9);
    border: 1px solid rgba(140, 106, 30, 0.3);
    border-radius: var(--radius-sm);
    padding: 6px 10px;
    margin-bottom: 8px;
    font-size: 0.85rem;
  }

  #mobile-hud strong {
    color: var(--brass-bright);
    font-family: var(--font-mono);
  }

  /* 移动端 D-PAD */
  #mobile-dpad {
    margin-top: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
  }

  .dpad-mid {
    display: flex;
    gap: 20px;
  }

  .dpad-btn {
    width: 48px;
    height: 44px;
    background: #2b1d14;
    border: 1px solid #7d5a2c;
    color: var(--text-gold);
    font-size: 1.1rem;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 3px 6px rgba(0, 0, 0, 0.4);
    touch-action: manipulation;
  }

  .dpad-btn:active {
    background: #443021;
    transform: translateY(2px);
  }
}

/* ================= 弹窗样式 ================= */
.game-modal {
  margin: auto;
  border: none;
  background: transparent;
  padding: 0;
  max-width: 90vw;
  width: 420px;
}

.game-modal::backdrop {
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
}

.modal-box {
  background: linear-gradient(180deg, #2b1d14 0%, #170f0a 100%);
  border: 2px solid var(--brass-main);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.9), 0 0 24px var(--brass-glow);
  color: var(--text-main);
}

.modal-crown {
  font-size: 3rem;
  margin-bottom: 8px;
}

.modal-box h2 {
  font-size: 1.6rem;
  color: var(--brass-bright);
  margin-bottom: 12px;
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.8);
}

.modal-box p {
  font-size: 0.95rem;
  color: var(--text-dim);
  line-height: 1.5;
  margin-bottom: 16px;
}

.win-stars {
  font-size: 1.8rem;
  color: #ffd700;
  letter-spacing: 4px;
  margin-bottom: 12px;
  text-shadow: 0 0 10px rgba(255, 215, 0, 0.5);
}

.win-rank-row {
  margin-bottom: 20px;
  font-size: 1rem;
}

.rank-badge {
  color: var(--brass-bright);
  font-weight: 800;
  background: rgba(212, 175, 55, 0.2);
  padding: 2px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--brass-main);
}

.modal-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
}

.modal-btn {
  padding: 10px 24px;
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: none;
}

/* 帮助弹窗 */
.help-box {
  text-align: left;
}

.help-box h2 {
  text-align: center;
}

.help-content {
  font-size: 0.9rem;
  color: var(--text-main);
  line-height: 1.6;
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}

.help-divider {
  border: none;
  border-top: 1px solid rgba(140, 106, 30, 0.3);
  margin: 10px 0;
}

.keymode-setting {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 0.85rem;
}

.keymode-setting select {
  background: #150f0b;
  border: 1px solid var(--brass-dark);
  color: var(--text-gold);
  border-radius: var(--radius-sm);
  padding: 6px;
  font-size: 0.85rem;
}

/* ================= 动效降级规范 ================= */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001s !important;
  }
}