/* =====================================================================
   赤雀麻将馆 · UI 现代化增强层 v2.0（2026-09-28）
   ---------------------------------------------------------------------
   定位：后加载覆盖层，只做视觉升级；不改游戏逻辑 / AI / PWA / 存档。
   约束：design/art/art-bible.md（墨夜赤金 · 雀牌入画）为上位规范；
   对比度 ≥4.5:1、触控 ≥48px、prefers-reduced-motion、禁用 emoji 图标。
   回滚：删掉 index.html 里本文件的 <link> 即回到基线样式。
   ===================================================================== */

:root {
  /* —— 现代化追加 token —— */
  --ease-out: cubic-bezier(.22, 1, .36, 1);
  --ease-snap: cubic-bezier(.2, 1.4, .4, 1);
  --shadow-1: 0 2px 8px rgba(0, 0, 0, .45);
  --shadow-2: 0 8px 24px rgba(0, 0, 0, .55);
  --shadow-3: 0 18px 48px rgba(0, 0, 0, .65);
  --gold-glow: 0 0 18px rgba(216, 180, 90, .35);
  --gold-glow-strong: 0 0 32px rgba(243, 217, 139, .5);
  /* 材质：木质 / 绒布纵深 */
  --wood-hi: #a37c4e;
  --wood-mid: #6b4a2b;
  --wood-lo: #2b1a0e;
  --felt-hi: #2f6b4f;
  --felt-lo: #10281e;
  /* 卡片尺寸（桌面放大一档） */
  --card-w: 22vmin;
}

/* =====================================================================
   M2 · 首页 Hero：标题气场 / 英文防挤压 / 日文装饰线
   ===================================================================== */
.hero-title {
  /* 三层光：描边 + 投影 + 鎏金外发光 */
  text-shadow:
    0 2px 0 rgba(34, 22, 9, .85),
    0 6px 20px rgba(0, 0, 0, .6),
    0 0 28px rgba(216, 180, 90, .28);
  letter-spacing: .11em;
}
.hero-en {
  /* 防挤压：允许优雅换行，不断词；窄屏自动收紧字距 */
  white-space: normal;
  overflow-wrap: break-word;
  max-width: 100%;
  line-height: 1.7;
  box-shadow: inset 0 1px 0 rgba(255, 247, 221, .08), var(--shadow-1);
}
@media (max-width: 560px) {
  .hero-en { letter-spacing: .14em; }
}
.hero-jp {
  display: flex;
  align-items: center;
  gap: .8em;
}
.hero-jp::before,
.hero-jp::after {
  content: "";
  height: 1px;
  width: 2.2em;
  background: linear-gradient(90deg, transparent, rgba(216, 180, 90, .55));
}
.hero-jp::after {
  background: linear-gradient(90deg, rgba(216, 180, 90, .55), transparent);
}
.hero-stamp {
  /* 朱印质感：印泥不规则边缘 */
  text-shadow: 0 0 24px rgba(192, 39, 45, .35);
  filter: saturate(1.1);
}

/* SEO 新增：hero 副描述 / 首页介绍 / noscript */
.hero-desc {
  margin-top: .8vmin;
  font-size: clamp(12px, 2.4vmin, 15px);
  line-height: 1.7;
  letter-spacing: .06em;
  color: var(--ivory-dim);
  max-width: 34em;
}
.hero-desc b { color: var(--gold-hi); font-weight: 700; }
#homeIntro {
  margin-top: 1vmin;
  font-size: clamp(11px, 2.1vmin, 13px);
  line-height: 1.8;
  color: var(--ivory-faint);
  max-width: 36em;
}
#homeIntro b { color: var(--ivory-dim); font-weight: 600; }
.noscript-card {
  margin: 12vh auto 0;
  max-width: 34em;
  padding: 28px 32px;
  text-align: center;
  background: linear-gradient(165deg, var(--ink-panel-top), var(--ink-panel-bot));
  border: 2px solid rgba(216, 180, 90, .5);
  border-radius: var(--radius-panel);
  box-shadow: var(--shadow-3), var(--gold-glow);
}
.noscript-card h1 {
  font-family: var(--font-cn-display);
  color: var(--gold-hi);
  letter-spacing: .12em;
  margin-bottom: .6em;
}
.noscript-card p { color: var(--ivory-dim); line-height: 1.8; }

/* =====================================================================
   M2b · CTA 材质升级：三层渐变 + 内高光 + 悬停抬升
   ===================================================================== */
.btn-gold {
  background:
    linear-gradient(180deg, rgba(255, 250, 230, .55), rgba(255, 250, 230, 0) 38%),
    linear-gradient(180deg, #f6dc92, #d8b45a 55%, #a97f2e);
  border: 1px solid #f9e9bd;
  box-shadow:
    0 6px 20px rgba(216, 180, 90, .4),
    0 2px 6px rgba(0, 0, 0, .45),
    inset 0 1px 0 rgba(255, 255, 255, .65),
    inset 0 -2px 4px rgba(122, 84, 20, .35);
  transition: transform .16s var(--ease-out), box-shadow .16s var(--ease-out), filter .16s ease;
}
@media (hover: hover) and (pointer: fine) {
  .btn-gold:not(:disabled):hover {
    transform: translateY(-2px);
    filter: brightness(1.06);
    box-shadow:
      0 10px 28px rgba(216, 180, 90, .5),
      0 2px 6px rgba(0, 0, 0, .45),
      inset 0 1px 0 rgba(255, 255, 255, .65),
      inset 0 -2px 4px rgba(122, 84, 20, .35),
      var(--gold-glow-strong);
  }
}
.btn-plain {
  background: linear-gradient(180deg, rgba(30, 21, 12, .72), rgba(16, 11, 7, .72));
  box-shadow: inset 0 1px 0 rgba(255, 245, 218, .1), var(--shadow-1);
  transition: transform .16s var(--ease-out), border-color .16s ease, box-shadow .16s ease;
}
@media (hover: hover) and (pointer: fine) {
  .btn-plain:hover { border-color: rgba(243, 217, 139, .75); box-shadow: inset 0 1px 0 rgba(255,245,218,.1), var(--shadow-1), var(--gold-glow); }
}

/* =====================================================================
   M3 · 角色卡：放大 / 名牌防溢出 / 选中态强化
   ===================================================================== */
.char-card { width: var(--card-w); }
.cc-frame {
  border-radius: 14px;
  box-shadow:
    0 10px 26px rgba(0, 0, 0, .62),
    0 0 0 1px rgba(0, 0, 0, .4),
    inset 0 0 30px rgba(0, 0, 0, .4);
}
@media (hover: hover) and (pointer: fine) {
  .char-card:hover { transform: translateY(-6px); }
  .char-card:hover .cc-frame {
    border-color: rgba(243, 217, 139, .8);
    box-shadow: 0 16px 34px rgba(0, 0, 0, .65), var(--gold-glow);
  }
}
/* 名牌防溢出："白鹤客卿"类四字称号不再撑破卡片 */
.cc-name, .cc-title {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}
.cc-title {
  font-size: clamp(10px, 2vmin, 14px);
  letter-spacing: .06em;
}
.char-card.picked .cc-frame {
  border-color: var(--gold-hi);
  box-shadow:
    0 0 26px var(--ac),
    0 0 54px rgba(216, 180, 90, .4),
    0 12px 28px rgba(0, 0, 0, .62);
}
.char-card.picked { transform: translateY(-6px); }

/* =====================================================================
   M4 · 牌桌材质重做：木质 + 绒布纵深（纯 CSS）
   ===================================================================== */
#tableFelt {
  background:
    /* 桌面高光 */
    radial-gradient(ellipse at 50% 18%, rgba(255, 240, 200, .07), transparent 55%),
    /* 木纹 */
    repeating-linear-gradient(96deg, rgba(255, 239, 198, .045) 0 1px, rgba(35, 19, 9, .07) 1px 3px),
    repeating-linear-gradient(88deg, rgba(0, 0, 0, .05) 0 2px, transparent 2px 7px),
    /* 木质纵深 */
    linear-gradient(180deg, var(--wood-hi) 0%, var(--wood-mid) 14%, #3a2513 70%, var(--wood-lo) 100%);
  border: 1px solid rgba(240, 210, 145, .85);
  box-shadow:
    0 32px 70px rgba(0, 0, 0, .7),
    0 10px 24px rgba(0, 0, 0, .6),
    inset 0 2px 0 rgba(255, 247, 221, .35),
    inset 0 0 0 3px rgba(39, 24, 12, .82),
    inset 0 0 0 5px rgba(226, 190, 119, .45),
    inset 0 -14px 24px rgba(0, 0, 0, .55),
    var(--gold-glow);
}
#tableFelt::before {
  background:
    /* 绒布顶部受光 */
    radial-gradient(ellipse at 50% 24%, rgba(255, 255, 255, .09), transparent 58%),
    /* 绒布织纹 */
    repeating-linear-gradient(2deg, rgba(230, 241, 221, .028) 0 1px, rgba(1, 18, 12, .045) 1px 3px),
    repeating-linear-gradient(91deg, rgba(255, 255, 255, .014) 0 1px, transparent 1px 4px),
    /* 绒布纵深 */
    radial-gradient(ellipse at 50% 42%, var(--felt-hi) 0%, var(--felt, #234b39) 48%, var(--felt-lo, #153629) 100%);
  box-shadow:
    inset 0 2px 0 rgba(255, 255, 255, .14),
    inset 0 14px 28px rgba(0, 0, 0, .28),
    inset 0 -20px 28px rgba(0, 0, 0, .42),
    0 0 0 4px rgba(37, 23, 12, .94),
    0 0 0 6px rgba(218, 182, 110, .78),
    0 0 0 9px rgba(43, 27, 15, .88);
}
/* 中央"雀"纹章强化：描边 + 微光 */
#tableFelt::after {
  border: 1px solid rgba(231, 198, 129, .2);
  box-shadow:
    inset 0 0 0 5px rgba(231, 198, 129, .05),
    0 0 0 1px rgba(231, 198, 129, .06),
    0 0 34px rgba(216, 180, 90, .1);
  background: radial-gradient(circle, rgba(231, 198, 129, .06), transparent 72%);
  text-shadow: 0 0 22px rgba(216, 180, 90, .3), 0 2px 6px rgba(0, 0, 0, .6);
}

/* =====================================================================
   M4b · 牌河与中央信息分区：中央信息胶囊化
   ===================================================================== */
#topBar .info {
  background: linear-gradient(180deg, rgba(22, 15, 9, .78), rgba(12, 8, 5, .78));
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(216, 180, 90, .35);
  box-shadow: inset 0 1px 0 rgba(255, 245, 218, .1), var(--shadow-1);
  letter-spacing: .08em;
}

/* =====================================================================
   M5 · HUD 顶栏：胶囊毛玻璃 + 层级
   ===================================================================== */
.icon-btn {
  background: linear-gradient(180deg, rgba(30, 21, 12, .78), rgba(14, 10, 7, .78));
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  box-shadow: inset 0 1px 0 rgba(255, 245, 218, .12), var(--shadow-1);
  transition: transform .15s var(--ease-out), border-color .15s ease, box-shadow .15s ease;
}
@media (hover: hover) and (pointer: fine) {
  .icon-btn:hover { border-color: rgba(243, 217, 139, .7); transform: translateY(-1px); }
}
.icon-btn:active { transform: scale(.94); }

/* 生涯信息条 HUD 升级 */
.hud-cell {
  background: linear-gradient(180deg, rgba(32, 23, 14, .92), rgba(15, 11, 7, .92));
  -webkit-backdrop-filter: blur(6px);
  backdrop-filter: blur(6px);
  box-shadow: inset 0 1px 0 rgba(255, 245, 218, .09), var(--shadow-1);
}
.hud-bar { height: 4px; box-shadow: inset 0 1px 2px rgba(0, 0, 0, .5); }
.hud-bar > i {
  box-shadow: 0 0 8px rgba(216, 180, 90, .6);
  transition: width .5s var(--ease-out);
}

/* =====================================================================
   M5b · AI 座位名牌：信息密度 + 材质（沿用既有 .pt-plate DOM）
   ===================================================================== */
.portrait { width: 20vmin; }
.pt-frame {
  border-radius: 14px;
  box-shadow:
    0 10px 26px rgba(0, 0, 0, .66),
    inset 0 1px 0 rgba(255, 245, 218, .1);
}
.pt-plate {
  margin-top: 6px;
  background: linear-gradient(180deg, rgba(24, 17, 10, .92), rgba(14, 10, 7, .88));
  -webkit-backdrop-filter: blur(4px);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(216, 180, 90, .35);
  border-left: 3px solid var(--ac, rgba(216, 180, 90, .5));
  border-radius: 10px;
  padding: 4px 6px;
  box-shadow: inset 0 1px 0 rgba(255, 245, 218, .08), var(--shadow-1);
}
.pt-name {
  text-shadow: 0 1px 0 rgba(8, 6, 4, .95), 0 0 12px var(--ac, transparent);
}
/* 玩家座位名牌：金色左条，座位归属一目了然 */
.p-bottom .pt-plate { border-left-color: var(--gold-hi); }

/* =====================================================================
   M6 · 手牌：选中反馈强化 / 触屏
   ===================================================================== */
.hand-tile {
  transition: transform .14s var(--ease-out), filter .14s ease;
}
.hand-tile.sel {
  transform: translateY(-2.8vmin) scale(1.04);
  filter:
    drop-shadow(0 8px 10px rgba(0, 0, 0, .65))
    drop-shadow(0 0 10px rgba(243, 217, 139, .85));
}
#handLayer {
  background:
    repeating-linear-gradient(92deg, rgba(255, 232, 180, .03) 0 1px, rgba(25, 13, 6, .06) 1px 4px),
    linear-gradient(180deg, rgba(122, 84, 44, .94), rgba(52, 34, 18, .97) 26%, rgba(15, 10, 7, .98));
  box-shadow:
    0 16px 32px rgba(0, 0, 0, .6),
    inset 0 2px 0 rgba(255, 245, 218, .14),
    inset 0 -6px 12px rgba(0, 0, 0, .5);
}
#handLayer.my-turn {
  border-color: rgba(243, 217, 139, .75);
  box-shadow:
    0 16px 32px rgba(0, 0, 0, .6),
    0 0 24px rgba(216, 180, 90, .35),
    inset 0 2px 0 rgba(255, 245, 218, .14),
    inset 0 -6px 12px rgba(0, 0, 0, .5);
}
/* 触屏：可点牌最小热区补强（视觉尺寸不变，热区扩大） */
@media (pointer: coarse) {
  .hand-tile { position: relative; }
  .hand-tile::after {
    content: "";
    position: absolute;
    inset: -6px -4px;
  }
}

/* =====================================================================
   M7 · 动效语言统一：ease-out / transform+opacity / 时长带
   ===================================================================== */
.scene { transition: opacity .45s var(--ease-out), transform .45s var(--ease-out); }
.char-card { transition: transform .25s var(--ease-out); }
.cc-frame { transition: transform .3s var(--ease-out), border-color .3s ease, box-shadow .3s ease; }
.bubble { animation: bubbleIn .3s var(--ease-out) both; }
#toast { transition: opacity .3s var(--ease-out), transform .3s var(--ease-out); }
.ov-inner { animation: panelIn .42s var(--ease-snap) both; }
.hand-tile.dealt { animation: dealIn .5s var(--ease-out) both; }
.river-tile.fresh { animation: popIn .3s var(--ease-out) both; }

/* =====================================================================
   M8 · 结算面板材质统一
   ===================================================================== */
.ov-inner {
  background:
    linear-gradient(180deg, rgba(255, 246, 220, .05), rgba(255, 246, 220, 0) 22%),
    linear-gradient(165deg, rgba(28, 20, 13, .97), rgba(14, 10, 7, .97));
  box-shadow:
    0 0 46px rgba(216, 180, 90, .22),
    0 28px 70px rgba(0, 0, 0, .72),
    inset 0 1px 0 rgba(255, 245, 218, .12);
}
.yaku {
  transition: transform .15s var(--ease-out), box-shadow .15s ease;
}
@media (hover: hover) and (pointer: fine) {
  .yaku:hover { transform: translateY(-1px); box-shadow: var(--shadow-1), var(--gold-glow); }
}

/* =====================================================================
   M9 · 移动端横屏：手牌 / 副露防重叠，纵向呼吸感
   ===================================================================== */
@media (orientation: landscape) and (pointer: coarse) {
  #tableFelt { bottom: 16%; height: 52%; }
  #handLayer { bottom: calc(env(safe-area-inset-bottom, 0px) + 6px); }
  .meld-area { margin-bottom: 1.2vmin; }
}
@media (orientation: portrait) and (pointer: coarse) {
  :root { --card-w: 34vmin; }
  .char-card { width: var(--card-w); }
}

/* =====================================================================
   M10 · 无障碍：reduced-motion 补全新增强动效
   ===================================================================== */
@media (prefers-reduced-motion: reduce) {
  .btn-gold, .btn-plain, .icon-btn, .char-card, .cc-frame,
  .hand-tile, .yaku, .hud-bar > i {
    transition: none !important;
    animation: none !important;
  }
  .cta-main { animation: none !important; }
  @keyframes ctaPulse { 0%, 100% { box-shadow: 0 4px 16px rgba(216, 180, 90, .35), inset 0 1px 0 rgba(255, 255, 255, .6); } }
}

/* =====================================================================
   M11 · 移动端精修（P0 走查 V1–V7）：只调布局尺寸，不动色板；
   动效仅 transform/opacity；本层后加载，可整体移除回滚。
   ===================================================================== */

/* ---- V2/T1 · 粗指针横屏：手牌负 margin 清零，牌间距回到 48px 防误触 ---- */
@media (orientation: landscape) and (pointer: coarse) {
  #handLayer .hand-tile { margin: 0; }
}

/* ---- V3 · 粗指针：选中上浮改固定 13px（390h 下原 -2.8vmin ≈ 11px 仍偏小） ---- */
@media (pointer: coarse) {
  .hand-tile.sel { transform: translateY(-13px) scale(1.04); }
}

/* ---- V4 · 粗指针：顶栏信息字号下限 12px（原 2.6vmin 在 390h 下 ≈10px） ---- */
@media (pointer: coarse) {
  #topBar .info { font-size: max(2.6vmin, 12px); }
}

/* ---- V5 · 横屏矮高度 + 粗指针：牌河牌宽下限 23px（原 4.4vmin ≈17px） ---- */
@media (orientation: landscape) and (max-height: 430px) and (pointer: coarse) {
  .river-tile { width: max(4.4vmin, 23px); height: max(6.2vmin, 32px); }
}

/* ---- V6 · 横屏矮高度：鸣牌条上抬，避开手牌顶部（原 bottom:17.5% ≈68px 会压牌） ---- */
@media (orientation: landscape) and (max-height: 430px) {
  #callBar { bottom: 24%; }
}

/* ---- V7 · 横屏首页：.hud 保持单行但收紧内边距/间距，4 格不再拥挤 ---- */
@media (orientation: landscape) and (max-height: 560px) {
  .hud { gap: .6vmin; }
  .hud-cell { padding: .4vmin .7vmin; }
  .hud-k { font-size: 10px; letter-spacing: .06em; }
  .hud-v { font-size: 12px; }
  .hud-cell.lvl .hud-v { font-size: 15px; }
}

/* ---- V1 · 竖屏横屏提示：不再限粗指针，触屏笔记本/窄桌面窗也有提示 ---- */
@media (orientation: portrait) {
  body.on-table #rotateHint { display: flex; }
}

/* ---- reduced-motion：横屏提示的旋转图标静止（transform 动效豁免补齐） ---- */
@media (prefers-reduced-motion: reduce) {
  #rotateHint span { animation: none; }
}

/* ===== Phase 1 广告位通用占位（无填充时彻底折叠）===== */
.ad-slot {
  display: block;
  margin-left: auto;
  margin-right: auto;
  padding: 0;
  border: 0;
  background: none;
  box-shadow: none;
  min-height: 0;
  overflow: hidden;
}
.ad-slot:empty { display: none !important; }
.ad-slot .adsbygoogle[data-ad-status="unfilled"] { display: none !important; }
/* ===== Phase 1 广告位：ad-slot-menu-banner（首页菜单）===== */
.ad-slot-menu-banner { width: 728px; height: 90px; max-width: 100%; }
@media (max-width: 900px) { .ad-slot-menu-banner { width: 468px; height: 60px; } }
@media (max-width: 520px) { .ad-slot-menu-banner { width: 320px; height: 100px; } }
/* ===== Phase 1 广告位：ad-slot-result-banner（结算面板）===== */
.ad-slot-result-banner { width: 468px; height: 60px; max-width: 100%; margin-top: 1.2vmin; }
@media (max-width: 520px) { .ad-slot-result-banner { width: 320px; height: 100px; } }