/* =============================================================
   DK Product Drawer — Phase B 样式（真实 Catalog：缩略图 + 三态）
   唯一依据：4.7/DK_Product_Drawer_Freeze_Spec_V1.md（V1.1）
   只在 max-width: 768px 生效，桌面端完全不受影响。

   协议对齐（4.7/DK_ARCHITECTURE_PROTOCOL.md）：
   §4 状态驱动 — 显隐一律 class / [data-mode] / [data-busy] /
      opacity / transform / pointer-events / aria-hidden，禁止 display 切换热路径
   §5 渲染主权 — 挂 #dkShell 内；bottom 复用 --dk-nav-h，遮罩不盖底部导航
   §7 性能 — 位移动画只用 translate3d；will-change 由 JS 动画期动态管理
   视觉 — 紫色 Shell Token（--dk-primary 系），对齐 Templates V2 量级；
          禁止 Order Drawer 黑白 Token
   ============================================================= */

@media (max-width: 768px) {

  /* ── 遮罩：停在底部导航上方（对齐 .dk-tpl-overlay 约定） ── */
  .dk-pd-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: var(--dk-nav-h);
    background: rgba(0, 0, 0, 0.40);
    z-index: 118;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.28s ease;
    touch-action: none;
  }
  .dk-pd-overlay.dk-pd-overlay-show {
    opacity: 1;
    pointer-events: auto;
  }

  /* ── 抽屉本体：底部导航上方停靠（对齐 .dk-tpl-sheet 约定）。
     关闭态需额外移出 nav-h + 24px 缓冲，确保完全离场不遮底部导航。 ── */
  .dk-pd-sheet {
    position: absolute;
    bottom: var(--dk-nav-h);
    left: 0;
    right: 0;
    transform: translate3d(0, calc(100% + var(--dk-nav-h) + 24px), 0);
    opacity: 0;
    z-index: 120;
    background: var(--dk-surface);
    border-radius: 24px 24px 0 0;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    max-height: 76dvh;
    overflow: hidden;
    pointer-events: none;
    box-shadow: 0 -8px 40px rgba(26, 26, 44, 0.16);
    transition: transform 0.32s cubic-bezier(0.32, 0.72, 0, 1), opacity 0.22s ease;
    /* will-change 由 JS 动画期动态管理（协议 §7），静态不声明 */
  }
  .dk-pd-sheet.dk-pd-open {
    transform: translate3d(0, 0, 0);
    opacity: 1;
    pointer-events: auto;
  }

  /* busy 态（Phase C 换品中）：内容禁交互，视觉减淡 */
  .dk-pd-sheet[data-busy="true"] .dk-pd-body,
  .dk-pd-sheet[data-busy="true"] .dk-pd-cats {
    opacity: 0.45;
    pointer-events: none;
  }

  /* ── 手柄 ── */
  .dk-pd-handle-row {
    display: flex;
    justify-content: center;
    padding: 12px 0 4px;
    flex-shrink: 0;
    cursor: grab;
  }
  .dk-pd-pill {
    width: 36px;
    height: 4px;
    border-radius: 2px;
    background: var(--dk-border);
  }

  /* ── Header ── */
  .dk-pd-header {
    padding: 2px 20px 10px;
    flex-shrink: 0;
  }
  .dk-pd-kicker {
    display: block;
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 1.6px;
    color: var(--dk-primary);
  }
  .dk-pd-title {
    margin-top: 2px;
    font-size: 19px;
    font-weight: 700;
    color: var(--dk-text-1);
    letter-spacing: 0.1px;
  }

  /* ── 分类 pills（横滑） ── */
  .dk-pd-cats {
    display: flex;
    gap: 8px;
    padding: 2px 20px 12px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    flex-shrink: 0;
  }
  .dk-pd-cats::-webkit-scrollbar { display: none; }
  .dk-pd-cat {
    flex-shrink: 0;
    padding: 8px 16px;
    border-radius: 999px;
    border: 1.5px solid transparent;
    background: var(--dk-primary-soft);
    color: var(--dk-text-2);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.2px;
    transition: transform 0.15s ease, border-color 0.2s, color 0.2s, background 0.2s;
  }
  .dk-pd-cat:active { transform: scale(0.94); }
  .dk-pd-cat-active {
    border-color: var(--dk-primary);
    background: var(--dk-surface);
    color: var(--dk-primary);
    font-weight: 700;
  }

  /* ── 内容滚动区 ── */
  .dk-pd-body {
    flex: 1 1 auto;
    overflow-y: auto;
    overflow-x: hidden;
    -webkit-overflow-scrolling: touch;
    touch-action: pan-y;
    padding: 0 20px 12px;
  }

  /* ── 缩略图（Phase B：真实 <img> 叠首字母占位之上；
     图加载失败 onerror 自摘除 → 底层字母自然露出） ── */
  .dk-pd-thumb {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    background: var(--dk-bg);
    color: var(--dk-primary);
    font-weight: 800;
    border-radius: 12px;
    flex-shrink: 0;
  }
  .dk-pd-thumb-lg { width: 64px; height: 64px; font-size: 22px; }
  .dk-pd-thumb-sm { width: 44px; height: 44px; font-size: 16px; border-radius: 10px; }
  .dk-pd-thumb-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: var(--dk-bg);
  }

  /* ── Current 摘要卡 ── */
  .dk-pd-current {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px;
    border-radius: 16px;
    background: var(--dk-surface);
    border: 1px solid var(--dk-border);
    box-shadow: 0 2px 10px rgba(26, 26, 44, 0.05);
  }
  .dk-pd-current:empty { display: none; }
  .dk-pd-cur-info { min-width: 0; }
  .dk-pd-cur-name {
    font-size: 15px;
    font-weight: 700;
    color: var(--dk-text-1);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .dk-pd-cur-price {
    margin-top: 1px;
    font-size: 13px;
    font-weight: 600;
    color: var(--dk-text-2);
  }

  /* ── 信任标签（冻结：All-In Price / 3–7 Day Delivery） ── */
  .dk-pd-trust {
    display: flex;
    gap: 6px;
    margin-top: 8px;
    flex-wrap: wrap;
  }
  .dk-pd-trust-pill {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 4px 10px;
    border-radius: 999px;
    background: var(--dk-primary-soft);
    color: var(--dk-primary);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.2px;
    white-space: nowrap;
  }
  .dk-pd-trust-pill svg { flex-shrink: 0; }

  /* ── Section ── */
  .dk-pd-section { margin-top: 16px; }
  .dk-pd-sec-label {
    font-size: 11px;
    font-weight: 800;
    letter-spacing: 1.4px;
    color: var(--dk-primary);
    margin-bottom: 10px;
  }
  /* single 模式：Style 区整体隐藏（状态驱动，aria + data-mode 双保险） */
  .dk-pd-sheet[data-mode="single"] .dk-pd-styles-wrap { display: none; }

  /* ── Style 卡容器：uiMode 驱动布局（Freeze Spec §5） ── */
  .dk-pd-styles {
    display: grid;
    gap: 10px;
  }
  .dk-pd-sheet[data-mode="dual"]   .dk-pd-styles { grid-template-columns: 1fr 1fr; }
  .dk-pd-sheet[data-mode="triple"] .dk-pd-styles {
    grid-template-columns: repeat(3, minmax(104px, 1fr));
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }
  .dk-pd-sheet[data-mode="triple"] .dk-pd-styles::-webkit-scrollbar { display: none; }
  /* scroll（≥4）：横滑，卡宽固定不压缩（Freeze Spec §5） */
  .dk-pd-sheet[data-mode="scroll"] .dk-pd-styles {
    display: flex;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 4px;
    margin-right: -20px;
    padding-right: 20px;
  }
  .dk-pd-sheet[data-mode="scroll"] .dk-pd-styles::-webkit-scrollbar { display: none; }
  .dk-pd-sheet[data-mode="scroll"] .dk-pd-card {
    flex: 0 0 124px;
    width: 124px;
  }

  /* ── Style 卡 ── */
  .dk-pd-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 14px 10px 12px;
    border-radius: 16px;
    border: 1.5px solid var(--dk-border);
    background: var(--dk-surface);
    box-shadow: 0 2px 8px rgba(26, 26, 44, 0.04);
    transition: transform 0.15s ease, border-color 0.2s, box-shadow 0.2s;
    text-align: center;
  }
  .dk-pd-card:active { transform: scale(0.96); }
  .dk-pd-card .dk-pd-thumb { width: 56px; height: 56px; font-size: 20px; }
  .dk-pd-card-name {
    font-size: 13px;
    font-weight: 700;
    color: var(--dk-text-1);
    line-height: 1.25;
  }
  .dk-pd-card-price {
    font-size: 12px;
    font-weight: 700;
    color: var(--dk-primary);
  }
  .dk-pd-card-tag {
    font-size: 11px;
    font-weight: 600;
    color: var(--dk-text-2);
  }
  /* 选中态：紫描边 + 右上角圆形勾选徽章（Freeze Spec §6） */
  .dk-pd-card-badge {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--dk-primary);
    color: #FFFFFF;
    opacity: 0;
    transform: scale(0.6);
    transition: opacity 0.18s ease, transform 0.18s ease;
  }
  .dk-pd-card-sel {
    border-color: var(--dk-primary);
    box-shadow: 0 4px 14px rgba(92, 86, 245, 0.18);
  }
  .dk-pd-card-sel .dk-pd-card-badge {
    opacity: 1;
    transform: scale(1);
  }

  /* ── More Categories（Phase A.1：横向推荐卡片，对齐冻结效果图）──
     - horizontal scroll，卡片固定宽度不压缩（与 styles scroll 同款手感）
     - 当前已选分类由 renderMore() 跳过，不出现在推荐里
     - 右缘出血：滚动可视暗示 */
  .dk-pd-more {
    display: flex;
    flex-direction: row;
    gap: 10px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    padding-bottom: 4px;
    margin-right: -20px;
    padding-right: 20px;
  }
  .dk-pd-more::-webkit-scrollbar { display: none; }
  .dk-pd-more-row {
    flex: 0 0 172px;
    width: 172px;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 10px 10px 12px;
    border-radius: 14px;
    border: 1px solid var(--dk-border);
    background: var(--dk-surface);
    box-shadow: 0 2px 8px rgba(26, 26, 44, 0.04);
    transition: transform 0.15s ease, background 0.2s;
    text-align: left;
  }
  .dk-pd-more-row:active {
    transform: scale(0.97);
    background: var(--dk-primary-soft);
  }
  .dk-pd-more-info {
    display: flex;
    flex-direction: column;
    min-width: 0;
    flex: 1;
  }
  .dk-pd-more-name {
    font-size: 13px;
    font-weight: 700;
    color: var(--dk-text-1);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  .dk-pd-more-price {
    font-size: 12px;
    font-weight: 600;
    color: var(--dk-text-2);
    margin-top: 1px;
    white-space: nowrap;
  }
  .dk-pd-more-chevron {
    color: var(--dk-text-2);
    display: flex;
    flex-shrink: 0;
  }

  /* ── Footer CTA ── */
  .dk-pd-footer {
    flex-shrink: 0;
    padding: 12px 20px calc(14px + var(--dk-safe-b, 0px));
    background: var(--dk-surface);
    border-top: 1px solid var(--dk-border);
  }
  .dk-pd-continue {
    width: 100%;
    padding: 15px 16px;
    border-radius: 16px;
    border: none;
    background: var(--dk-primary);
    color: #FFFFFF;
    font-size: 15px;
    font-weight: 700;
    letter-spacing: 0.3px;
    box-shadow: 0 6px 18px rgba(92, 86, 245, 0.30);
    transition: transform 0.15s ease, opacity 0.2s;
  }
  .dk-pd-continue:active { transform: scale(0.97); }
  .dk-pd-continue:disabled {
    opacity: 0.45;
    pointer-events: none;
  }

  /* ── 三态呈现（Phase B，[data-status] 状态驱动）──
     非 ready：隐藏内容区块，只展示 status 块（skeleton / empty / error）。
     此为整块内容的进出场切换（非热路径高频切换），display 可用。 ── */
  .dk-pd-status { display: none; padding: 8px 0 4px; }
  .dk-pd-sheet:not([data-status="ready"]) .dk-pd-status { display: block; }
  .dk-pd-sheet:not([data-status="ready"]) .dk-pd-current,
  .dk-pd-sheet:not([data-status="ready"]) .dk-pd-styles-wrap,
  .dk-pd-sheet:not([data-status="ready"]) .dk-pd-more-sec {
    display: none;
  }

  /* loading 骨架屏 */
  .dk-pd-skel {
    border-radius: 16px;
    background: linear-gradient(100deg,
      var(--dk-bg) 40%, var(--dk-primary-soft) 50%, var(--dk-bg) 60%);
    background-size: 200% 100%;
    animation: dkPdShimmer 1.2s ease-in-out infinite;
  }
  .dk-pd-skel-lg { height: 92px; }
  .dk-pd-skel-row {
    display: flex;
    gap: 10px;
    margin-top: 12px;
  }
  .dk-pd-skel-row .dk-pd-skel {
    flex: 1;
    height: 132px;
  }
  @keyframes dkPdShimmer {
    0%   { background-position: 180% 0; }
    100% { background-position: -80% 0; }
  }

  /* empty / error 提示 + Retry */
  .dk-pd-msg {
    padding: 22px 8px 4px;
    text-align: center;
    font-size: 13.5px;
    font-weight: 600;
    color: var(--dk-text-2);
    line-height: 1.5;
  }
  .dk-pd-retry {
    display: block;
    margin: 14px auto 8px;
    padding: 10px 26px;
    border-radius: 999px;
    border: 1.5px solid var(--dk-primary);
    background: var(--dk-surface);
    color: var(--dk-primary);
    font-size: 13px;
    font-weight: 700;
    letter-spacing: 0.3px;
    transition: transform 0.15s ease, background 0.2s;
  }
  .dk-pd-retry:active {
    transform: scale(0.95);
    background: var(--dk-primary-soft);
  }

  /* ── 按钮基础重置（sheet 内所有 button） ── */
  .dk-pd-sheet button {
    font-family: inherit;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
  }
}