/* ========================================
   app-skin.css - 闪卡系统主题适配器
   把 app.html 的暖橘棕主题映射到平台蓝紫马卡龙
   注：[data-theme="dark"] 暖棕暗色保留不动
======================================== */

/* === 仅重写日间模式色彩变量 === */
:root:not([data-theme="dark"]) {
  --bg: #f8fafc;
  --bg2: #ffffff;
  --bg3: #f1f5f9;
  --bg4: #ede9fe;
  --border: rgba(15,23,42,0.06);
  --border2: rgba(15,23,42,0.10);
  --text: #0f172a;
  --text2: #475569;
  --text3: #64748b;
  --text4: #94a3b8;
  --accent: #6366f1;
  --accent2: #818cf8;
  --accent3: #ede9fe;
  --accent4: #ddd6fe;
  --shadow: rgba(99,102,241,0.05);
  --shadow2: rgba(99,102,241,0.10);
  --green3: #d1fae5;
  --blue3: #dbeafe;
  --yellow3: #fef3c7;
  --red3: #fce7f3;
  --purple3: #ede9fe;
}

/* === 主按钮蓝紫渐变 === */
:root:not([data-theme="dark"]) .btn-p {
  background: linear-gradient(135deg, #818cf8, #6366f1) !important;
}

/* === 隐藏冗余顶部装饰 === */
.fc-app-top-nav { display: none !important; }
.fc-app-login-notice { display: none !important; }
.container > .header { display: none; }

/* === 桌面端布局：左侧给侧边栏让位 === */
@media(min-width: 901px) {
  body { padding-left: 240px; }
  .container { padding-top: 22px; }
}

/* === 侧边栏 === */
.skin-sidebar {
  position: fixed;
  top: 0; left: 0;
  width: 240px;
  height: 100vh;
  background: rgba(255,255,255,0.72);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-right: 1px solid var(--border);
  padding: 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  z-index: 90;
  overflow-y: auto;
  font-family: -apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC",sans-serif;
}
[data-theme="dark"] .skin-sidebar {
  background: rgba(37,32,25,0.78);
  border-right-color: rgba(120,100,70,0.25);
}

.skin-logo {
  display: flex; align-items: center; gap: 10px;
  padding: 4px 8px 18px;
  text-decoration: none; color: inherit;
}
.skin-logo-icon {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg,#6366f1,#a855f7);
  display: grid; place-items: center;
  color: #fff; font-weight: 700; font-size: 16px;
  box-shadow: 0 4px 12px rgba(99,102,241,0.25);
  flex-shrink: 0;
}
.skin-logo-text { font-weight: 600; font-size: 15px; }

.skin-label {
  font-size: 11px;
  color: var(--text4);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 14px 10px 4px;
  font-weight: 500;
}

.skin-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px;
  border-radius: 8px;
  color: var(--text2);
  font-size: 13.5px; font-weight: 500;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.15s;
}
.skin-item:hover { background: var(--accent3); color: var(--accent); }
.skin-item.active {
  background: var(--bg2);
  color: var(--text);
  box-shadow: 0 1px 2px rgba(0,0,0,0.04), 0 0 0 1px var(--border);
}
.skin-item svg { width: 17px; height: 17px; flex-shrink: 0; stroke-width: 2; }

.skin-foot {
  margin-top: auto;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}
.skin-user {
  display: flex; align-items: center; gap: 10px;
  padding: 8px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s;
}
.skin-user:hover { background: var(--bg3); }
.skin-avatar {
  width: 34px; height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg,#818cf8,#c084fc);
  display: grid; place-items: center;
  color: #fff; font-weight: 600; font-size: 14px;
  flex-shrink: 0;
}
.skin-uinfo { min-width: 0; flex: 1; }
.skin-uname {
  font-size: 13px; font-weight: 600;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.skin-urole { font-size: 11px; color: var(--text4); margin-top: 1px; }

/* === FAB 全部统一到右下角竖列 === */
.theme-toggle { right: 16px; bottom: 16px; }
.pomo-fab     { right: 16px; bottom: 68px; }
.memo-fab     { left: auto !important; right: 16px; bottom: 120px; }
.scroll-fab   { right: 16px; bottom: 172px; }

/* 云同步按钮挪到右下顶部 */
.cloud-sync-fabs {
  bottom: auto !important;
  top: 12px !important;
  left: auto !important;
  right: 12px;
  flex-direction: row !important;
  gap: 6px;
  z-index: 95;
}
.cloud-sync-fabs button {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(255,255,255,0.85);
  backdrop-filter: blur(8px);
}

/* 登录 FAB 隐藏（侧边栏已有用户卡片） */
.login-fab { display: none !important; }

/* 撤销按钮挪到主区下方，避免和侧边栏重叠 */
.undo-fab {
  left: auto !important;
  right: 16px;
  bottom: 224px;
}

/* === 顶部 tab 颜色微调 === */
:root:not([data-theme="dark"]) .tabs {
  border-bottom-color: var(--border);
}
:root:not([data-theme="dark"]) .tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
:root:not([data-theme="dark"]) .tab-btn:hover {
  color: var(--accent);
  background: var(--accent3);
}

/* === 移动端：侧边栏变顶部横条 === */
@media(max-width: 900px) {
  body { padding-left: 0; }
  .skin-sidebar {
    position: sticky;
    top: 0;
    width: 100%;
    height: auto;
    flex-direction: row;
    padding: 10px 14px;
    gap: 4px;
    overflow-x: auto;
    overflow-y: hidden;
    border-right: none;
    border-bottom: 1px solid var(--border);
  }
  .skin-label, .skin-foot, .skin-logo-text { display: none; }
  .skin-item span:not(.skin-badge) { display: none; }
  .skin-item { padding: 8px; flex-shrink: 0; }
  .skin-logo { padding: 0 6px 0 0; }
  .undo-fab { left: 16px; right: auto; }
}


/* UI_FINAL_FLASHCARD_SKIN_START */
/* 第 13 批：闪卡系统适配器最终 UI 收口
   只覆盖日间模式和适配器样式；暖棕暗色模式保留不动。
*/

/* ========== 日间变量：奶油蓝玻璃风，不影响 dark ========== */
:root:not([data-theme="dark"]) {
  --bg: #f7f2ea;
  --bg2: rgba(255,255,255,0.88);
  --bg3: rgba(248,250,252,0.78);
  --bg4: #eef2ff;

  --border: rgba(92,74,51,0.08);
  --border2: rgba(92,74,51,0.14);

  --text: #111827;
  --text2: #475569;
  --text3: #64748b;
  --text4: #94a3b8;

  --accent: #6366f1;
  --accent2: #8b5cf6;
  --accent3: rgba(238,242,255,0.92);
  --accent4: rgba(221,214,254,0.88);

  --shadow: rgba(92,74,51,0.055);
  --shadow2: rgba(99,102,241,0.14);

  --green3: #d1fae5;
  --blue3: #dbeafe;
  --yellow3: #fef3c7;
  --red3: #fce7f3;
  --purple3: #ede9fe;
}

/* ========== 闪卡系统整体背景：奶油白 + 冰蓝 + 淡紫 + 浅棕柔光 ========== */
:root:not([data-theme="dark"]) body {
  background-color: var(--bg);
  background-image:
    radial-gradient(circle at 8% 0%, rgba(191,219,254,0.42), transparent 34%),
    radial-gradient(circle at 92% 6%, rgba(216,180,254,0.24), transparent 32%),
    radial-gradient(circle at 50% 100%, rgba(245,202,153,0.26), transparent 42%),
    linear-gradient(180deg, #f8fbff 0%, #faf7f1 48%, #f5efe6 100%);
  background-attachment: fixed;
}

/* 主内容略微呼吸，保持 app.html 原结构不变 */
@media(min-width: 901px) {
  :root:not([data-theme="dark"]) .container {
    padding-top: 24px;
  }
}

/* ========== 侧边栏：与主平台统一的奶油蓝玻璃风 ========== */
:root:not([data-theme="dark"]) .skin-sidebar {
  background:
    linear-gradient(180deg, rgba(224,238,255,0.80) 0%, rgba(248,250,252,0.74) 42%, rgba(255,250,242,0.84) 100%);
  backdrop-filter: blur(30px) saturate(1.12);
  -webkit-backdrop-filter: blur(30px) saturate(1.12);
  border-right: 1px solid rgba(255,255,255,0.72);
  box-shadow:
    inset -1px 0 0 rgba(255,255,255,0.58),
    12px 0 36px rgba(96,165,250,0.085);
}

.skin-logo {
  border-radius: 16px;
}

:root:not([data-theme="dark"]) .skin-logo:hover {
  background: rgba(255,255,255,0.45);
}

:root:not([data-theme="dark"]) .skin-logo-icon {
  border-radius: 12px;
  background:
    radial-gradient(circle at 30% 20%, rgba(255,255,255,0.62), transparent 34%),
    linear-gradient(135deg, #4f46e5 0%, #7c3aed 52%, #c084fc 100%);
  box-shadow:
    0 10px 26px rgba(99,102,241,0.24),
    inset 0 1px 0 rgba(255,255,255,0.42);
}

.skin-logo-text {
  letter-spacing: -0.01em;
  font-weight: 700;
}

:root:not([data-theme="dark"]) .skin-label {
  color: rgba(100,116,139,0.82);
  font-weight: 700;
}

/* 导航项：白色胶囊 + active 高级阴影 */
:root:not([data-theme="dark"]) .skin-item {
  border-radius: 999px;
  color: var(--text2);
  font-weight: 600;
}

:root:not([data-theme="dark"]) .skin-item:hover {
  background: rgba(255,255,255,0.60);
  color: var(--text);
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.66);
}

:root:not([data-theme="dark"]) .skin-item.active {
  background: rgba(255,255,255,0.90);
  color: var(--text);
  box-shadow:
    0 10px 24px rgba(15,23,42,0.06),
    inset 0 0 0 1px rgba(255,255,255,0.80);
}

:root:not([data-theme="dark"]) .skin-item.active svg {
  color: #6366f1;
}

/* 底部用户卡片 */
:root:not([data-theme="dark"]) .skin-foot {
  border-top-color: rgba(92,74,51,0.08);
}

:root:not([data-theme="dark"]) .skin-user {
  border-radius: 16px;
}

:root:not([data-theme="dark"]) .skin-user:hover {
  background: rgba(255,255,255,0.58);
}

:root:not([data-theme="dark"]) .skin-avatar {
  border-radius: 12px;
  background:
    radial-gradient(circle at 30% 20%, rgba(255,255,255,0.55), transparent 34%),
    linear-gradient(135deg, #6366f1, #c084fc);
  box-shadow: 0 8px 18px rgba(99,102,241,0.15);
}

/* ========== 闪卡内部卡片：只增强质感，不改布局 ========== */
:root:not([data-theme="dark"]) .card {
  background:
    radial-gradient(circle at 12% 0%, rgba(255,255,255,0.72), transparent 34%),
    linear-gradient(180deg, rgba(255,255,255,0.90), rgba(255,250,242,0.76));
  border-color: rgba(255,255,255,0.72);
  box-shadow:
    0 14px 36px rgba(92,74,51,0.065),
    inset 0 1px 0 rgba(255,255,255,0.76);
}

/* 卡片标题细节 */
:root:not([data-theme="dark"]) .card h2 {
  color: #4f46e5;
  font-weight: 800;
}

:root:not([data-theme="dark"]) .card h2::after {
  background: linear-gradient(90deg, rgba(99,102,241,0.18), transparent);
}

/* ========== 按钮：主按钮黑色高级胶囊；次按钮奶油白 ========== */
:root:not([data-theme="dark"]) .btn-p {
  border-radius: 999px !important;
  background: linear-gradient(180deg, #111827 0%, #020617 100%) !important;
  color: #ffffff !important;
  box-shadow:
    0 14px 30px rgba(15,23,42,0.20),
    inset 0 1px 0 rgba(255,255,255,0.14) !important;
}

:root:not([data-theme="dark"]) .btn-p:hover {
  transform: translateY(-2px);
  box-shadow:
    0 18px 38px rgba(15,23,42,0.25),
    inset 0 1px 0 rgba(255,255,255,0.16) !important;
}

:root:not([data-theme="dark"]) .btn-s {
  border-radius: 999px;
  background:
    linear-gradient(180deg, rgba(255,255,255,0.88), rgba(255,250,242,0.76));
  border-color: rgba(92,74,51,0.12);
  color: var(--text2);
  box-shadow:
    0 8px 20px rgba(92,74,51,0.045),
    inset 0 1px 0 rgba(255,255,255,0.78);
}

:root:not([data-theme="dark"]) .btn-s:hover {
  background: rgba(255,255,255,0.94);
  border-color: rgba(99,102,241,0.28);
  color: #4f46e5;
  transform: translateY(-1px);
}

/* ========== 顶部 Tabs：白色胶囊分段感 ========== */
:root:not([data-theme="dark"]) .tabs {
  border-bottom-color: rgba(92,74,51,0.08);
  background: rgba(255,255,255,0.38);
  border-radius: 18px;
  padding: 4px;
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.70),
    0 8px 20px rgba(92,74,51,0.04);
}

:root:not([data-theme="dark"]) .tab-btn {
  border-radius: 14px;
  border-bottom: none;
  bottom: 0;
  color: var(--text3);
}

:root:not([data-theme="dark"]) .tab-btn:hover {
  background: rgba(255,255,255,0.58);
  color: #4f46e5;
}

:root:not([data-theme="dark"]) .tab-btn.active {
  background: rgba(255,255,255,0.92);
  color: #4f46e5;
  border-bottom-color: transparent;
  box-shadow:
    0 8px 18px rgba(15,23,42,0.06),
    inset 0 1px 0 rgba(255,255,255,0.82);
}

/* ========== 弹窗：奶油玻璃弹窗 ========== */
:root:not([data-theme="dark"]) .modal-bg {
  background:
    radial-gradient(circle at 50% 10%, rgba(191,219,254,0.24), transparent 36%),
    rgba(15,23,42,0.34);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

:root:not([data-theme="dark"]) .modal {
  background:
    linear-gradient(180deg, rgba(255,255,255,0.94), rgba(255,250,242,0.84));
  border-color: rgba(255,255,255,0.76);
  box-shadow:
    0 30px 80px rgba(15,23,42,0.20),
    0 12px 30px rgba(92,74,51,0.10),
    inset 0 1px 0 rgba(255,255,255,0.86);
}

:root:not([data-theme="dark"]) .modal h3 {
  color: #4f46e5;
  font-weight: 800;
}

/* ========== 右下角 FAB：统一为奶油玻璃小圆钮 ========== */
:root:not([data-theme="dark"]) .theme-toggle,
:root:not([data-theme="dark"]) .pomo-fab,
:root:not([data-theme="dark"]) .memo-fab,
:root:not([data-theme="dark"]) .scroll-fab,
:root:not([data-theme="dark"]) .undo-fab {
  background:
    linear-gradient(180deg, rgba(255,255,255,0.88), rgba(255,250,242,0.76));
  border-color: rgba(255,255,255,0.72);
  box-shadow:
    0 12px 28px rgba(92,74,51,0.09),
    inset 0 1px 0 rgba(255,255,255,0.80);
}

:root:not([data-theme="dark"]) .theme-toggle:hover,
:root:not([data-theme="dark"]) .pomo-fab:hover,
:root:not([data-theme="dark"]) .memo-fab:hover,
:root:not([data-theme="dark"]) .scroll-fab:hover,
:root:not([data-theme="dark"]) .undo-fab:hover {
  transform: translateY(-2px);
}

/* 云同步按钮：保持功能位置，只升级质感 */
:root:not([data-theme="dark"]) .cloud-sync-fabs button {
  border-color: rgba(99,102,241,0.26);
  color: #4f46e5;
  background: rgba(255,255,255,0.82);
  box-shadow:
    0 8px 20px rgba(99,102,241,0.10),
    inset 0 1px 0 rgba(255,255,255,0.78);
}

/* ========== 移动端顶部横条收口 ========== */
@media(max-width: 900px) {
  :root:not([data-theme="dark"]) .skin-sidebar {
    background:
      linear-gradient(90deg, rgba(224,238,255,0.86), rgba(255,250,242,0.84));
    border-bottom: 1px solid rgba(255,255,255,0.72);
    box-shadow:
      0 10px 28px rgba(96,165,250,0.08),
      inset 0 -1px 0 rgba(255,255,255,0.60);
  }

  :root:not([data-theme="dark"]) .skin-item {
    border-radius: 14px;
  }

  :root:not([data-theme="dark"]) .tabs {
    border-radius: 16px;
  }
}

/* 暗色模式保护：明确不覆盖 app.html 原暖棕暗色 */
[data-theme="dark"] .skin-sidebar {
  box-shadow: none;
}

[data-theme="dark"] .skin-item {
  border-radius: 8px;
}

[data-theme="dark"] .tabs {
  background: transparent;
  box-shadow: none;
  padding: 0;
}
/* UI_FINAL_FLASHCARD_SKIN_END */





/* ====== APP_48_RESHAPE_START ======
   闪卡 1B 第49批（marker 复用 48）：番茄钟精确入口 + 计划徽章 + 统计/设置抽屉 + tabs DOM 移除
*/

/* 隐藏冗余 FAB（已搬到侧栏） */
.cloud-sync-fabs,
.memo-fab {
  display: none !important;
}
@media (min-width: 1024px){
  body .pomo-fab { display: none !important; }
}

/* 47 批留下的"闪卡导航"独立分组也隐藏（兜底） */
.skin-app-section { display: none !important; }

/* 桌面端隐藏 .tabs（即便 detach 失败也作 fallback） */
@media (min-width: 1024px){
  body .tabs {
    display: none !important;
  }
  body .header {
    margin-bottom: 16px !important;
  }
}

/* tabs detach 后的隐藏容器 */
#skin-tabs-stash {
  position: absolute !important;
  left: -99999px !important;
  top: -99999px !important;
  width: 0 !important;
  height: 0 !important;
  overflow: hidden !important;
  pointer-events: none !important;
  visibility: hidden !important;
}

/* 学习工具组内的子项 */
.skin-fc-sub {
  display: flex !important;
  align-items: center !important;
  gap: 10px !important;
  margin: 2px 8px !important;
  padding: 8px 12px !important;
  border-radius: 10px !important;
  background: transparent !important;
  border: 0 !important;
  width: calc(100% - 16px) !important;
  cursor: pointer !important;
  font-size: 13px !important;
  font-weight: 700 !important;
  color: #475569 !important;
  text-align: left !important;
  position: relative !important;
  font-family: inherit !important;
  transition: background .15s, color .15s !important;
}
.skin-fc-sub:hover {
  background: rgba(124,58,237,.06) !important;
  color: #1e293b !important;
}
.skin-fc-sub.is-active {
  background: linear-gradient(135deg, rgba(124,58,237,.13), rgba(99,102,241,.10)) !important;
  color: #6d28d9 !important;
  font-weight: 900 !important;
  box-shadow: inset 3px 0 0 #7c3aed !important;
}
.skin-fc-emoji {
  width: 20px;
  font-size: 15px;
  line-height: 1;
  text-align: center;
  flex-shrink: 0;
}
.skin-fc-label {
  flex: 1;
  min-width: 0;
}
.skin-fc-badge {
  display: none;
  min-width: 26px;
  height: 19px;
  padding: 0 8px;
  border-radius: 999px;
  color: #ffffff !important;
  font-size: 10.5px;
  font-weight: 900;
  align-items: center;
  justify-content: center;
  line-height: 1;
  flex-shrink: 0;
  font-variant-numeric: tabular-nums;
  letter-spacing: .2px;
}
.skin-fc-badge.is-show { display: inline-flex; }
.skin-fc-badge.is-streak { background: linear-gradient(135deg, #fbbf24, #f59e0b); }
.skin-fc-badge.is-total  { background: linear-gradient(135deg, #a78bfa, #7c3aed); }
.skin-fc-badge.is-due    { background: linear-gradient(135deg, #f472b6, #ec4899); }
.skin-fc-badge.is-plan   { background: linear-gradient(135deg, #34d399, #10b981); }

/* 抽屉触发按钮 */
.skin-drawer-toggle {
  position: fixed;
  right: 18px;
  bottom: 96px;
  z-index: 940;
  height: 44px;
  padding: 0 16px;
  border: 1px solid rgba(124,58,237,.22);
  border-radius: 999px;
  background: #ffffff;
  color: #6d28d9;
  font-size: 13px;
  font-weight: 900;
  letter-spacing: .3px;
  cursor: pointer;
  display: none;
  align-items: center;
  gap: 6px;
  box-shadow: 0 12px 30px rgba(124,58,237,.18);
  font-family: inherit;
  transition: transform .15s, box-shadow .15s;
}
.skin-drawer-toggle:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px rgba(124,58,237,.26);
}
.skin-drawer-toggle.is-show { display: inline-flex; }

/* 抽屉容器 */
.skin-drawer {
  position: fixed;
  top: 0; bottom: 0;
  right: -520px;
  width: 480px;
  max-width: 100vw;
  z-index: 950;
  background: linear-gradient(180deg, #ffffff 0%, #faf6ff 100%);
  border-left: 1px solid rgba(124,58,237,.18);
  box-shadow: -24px 0 60px rgba(15,23,42,.12);
  transition: right .26s ease;
  display: flex;
  flex-direction: column;
}
.skin-drawer.is-open { right: 0; }

.skin-drawer-mask {
  position: fixed;
  inset: 0;
  z-index: 945;
  background: rgba(15,23,42,.32);
  display: none;
}
.skin-drawer-mask.is-show { display: block; }

.skin-drawer-head {
  flex: 0 0 auto;
  padding: 16px 18px 12px;
  border-bottom: 1px solid rgba(124,58,237,.14);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.skin-drawer-title {
  font-size: 15px;
  font-weight: 950;
  color: #6d28d9;
}
.skin-drawer-close {
  width: 32px; height: 32px;
  border: 0;
  border-radius: 999px;
  background: transparent;
  color: #475569;
  font-size: 18px;
  font-weight: 800;
  cursor: pointer;
  font-family: inherit;
}
.skin-drawer-close:hover {
  background: rgba(124,58,237,.10);
  color: #6d28d9;
}
.skin-drawer-body {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: 14px 16px 28px;
}
.skin-drawer-section {
  display: none;
}
.skin-drawer-section.is-show {
  display: block;
}
.skin-drawer-body .card {
  margin-bottom: 14px !important;
}

/* ====== APP_48_RESHAPE_END ====== */
/* ====== APP_50_TOPBAR_START ======
   第50批：面包屑 + 精简顶条（不动 48 批的抽屉，但抽屉只剩首页用）
*/

/* 顶部精简条：放在 .container 最前 */
.skin-topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 10px 14px;
  margin: 0 0 12px;
  border-radius: 14px;
  background: linear-gradient(135deg, rgba(255,255,255,.85) 0%, rgba(245,243,255,.85) 100%);
  border: 1px solid rgba(124,58,237,.12);
  box-shadow: 0 4px 14px rgba(15,23,42,.04);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  flex-wrap: wrap;
}

.skin-crumb {
  font-size: 13px;
  color: #475569;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
}
.skin-crumb .sk-home {
  color: #6d28d9;
  font-weight: 900;
}
.skin-crumb .sk-sep {
  color: #cbd5e1;
  font-weight: 400;
}
.skin-crumb .sk-cur {
  color: #1e293b;
  font-weight: 900;
}

.skin-quickstats {
  display: flex;
  gap: 14px;
  align-items: center;
  font-size: 12.5px;
  color: #64748b;
  flex-wrap: wrap;
}
.skin-quickstats .qs-item {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 10px;
  border-radius: 999px;
  background: #ffffff;
  border: 1px solid rgba(124,58,237,.12);
  font-weight: 700;
}
.skin-quickstats .qs-item b {
  color: #6d28d9;
  font-weight: 900;
  font-size: 13.5px;
  font-variant-numeric: tabular-nums;
}
.skin-quickstats .qs-item.qs-due b      { color: #ec4899; }
.skin-quickstats .qs-item.qs-mastered b { color: #10b981; }
.skin-quickstats .qs-item.qs-streak b   { color: #f59e0b; }

/* ====== APP_50_TOPBAR_END ====== */
/* ====== APP_51_REVIEW_LIBRARY_SPLIT_START ======
   第51批：复习页拆分 + 加卡片页拆分 + 顶条快捷按钮
*/

/* 1) 顶条快捷按钮 */
.skin-quickstats .qs-action {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  border-radius: 999px;
  background: linear-gradient(135deg, #7c3aed, #6366f1);
  color: #ffffff !important;
  font-size: 12px;
  font-weight: 900;
  border: 0;
  cursor: pointer;
  transition: transform .15s, box-shadow .15s;
  font-family: inherit;
}
.skin-quickstats .qs-action:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(124,58,237,.30);
}

/* 2) 复习页：卡片右上角快速切换开关 */
.skin-recall-toggle {
  position: absolute;
  top: 12px;
  right: 12px;
  z-index: 10;
  display: none;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(255,255,255,.92);
  border: 1px solid rgba(124,58,237,.18);
  font-size: 11px;
  font-weight: 800;
  color: #475569;
  cursor: pointer;
  transition: background .15s, border-color .15s;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
}
.skin-recall-toggle:hover {
  background: rgba(255,255,255,1);
  border-color: rgba(124,58,237,.30);
}
.skin-recall-toggle.is-show {
  display: inline-flex;
}
.skin-recall-toggle .srt-label {
  color: #1e293b;
}
.skin-recall-toggle .srt-mode {
  color: #6d28d9;
  font-weight: 900;
}

/* 3) 评分按钮数字提示 */
.review-btn .rb-key {
  display: inline-block;
  margin-left: 4px;
  padding: 1px 5px;
  border-radius: 4px;
  background: rgba(255,255,255,.20);
  font-size: 10px;
  font-weight: 900;
  opacity: .7;
}

/* 4) 加卡片页左右分栏（桌面端） */
@media (min-width: 1024px){
  #tab-library .card:has(#dynamicFormArea) {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    gap: 16px !important;
    align-items: start !important;
  }
  #tab-library .card:has(#dynamicFormArea) > h2 {
    grid-column: 1 / -1 !important;
  }
  #tab-library .card:has(#dynamicFormArea) > .mt {
    grid-column: 1 / -1 !important;
  }
  #tab-library .card:has(#dynamicFormArea) .lib-type-tabs {
    grid-column: 1 / -1 !important;
  }
  #tab-library .card:has(#dynamicFormArea) #dynamicFormArea {
    grid-column: 1 / 2 !important;
    grid-row: 4 / 5 !important;
  }
  #tab-library .card:has(#dynamicFormArea) > .fr:nth-of-type(1),
  #tab-library .card:has(#dynamicFormArea) > .fr3:nth-of-type(1),
  #tab-library .card:has(#dynamicFormArea) > .fr3:nth-of-type(2),
  #tab-library .card:has(#dynamicFormArea) > .fr:nth-last-of-type(2),
  #tab-library .card:has(#dynamicFormArea) > #pastedImagePreview {
    grid-column: 2 / 3 !important;
  }
  #tab-library .card:has(#dynamicFormArea) > .btn-p {
    grid-column: 1 / -1 !important;
  }
}

/* ====== APP_51_REVIEW_LIBRARY_SPLIT_END ====== */



/* ====== APP_66_DETAIL_READING_START ======
   第66批：闪卡详情阅读体验优化（纯 CSS，零 JS，零业务逻辑改动）
   - 详情展开后：图片优先置顶（flex + order: -1）
   - 中等舒适宽度（Notion 风），最大 820px
   - 标题大 / 正文适中 / 公式突出
   - 仅日间模式生效；暖棕暗色（[data-theme="dark"]）保留不动
*/

/* 1) 详情容器：变 flex 列布局，给 order 让位；中等阅读宽度 */
:root:not([data-theme="dark"]) .lib-detail-expanded {
  display: flex !important;
  flex-direction: column !important;
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
  padding: 18px 24px;
  font-size: 15.5px;
  line-height: 1.85;
  color: #1f2937;
  letter-spacing: 0.01em;
}

/* 2) 图片块置顶：order 拉到 -1 */
:root:not([data-theme="dark"]) .lib-detail-expanded .detail-imgs {
  order: -1 !important;
  margin: 0 0 18px 0 !important;
  padding: 0 !important;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* 3) 图片本身：默认占满正文宽度，不再小到看不清 */
:root:not([data-theme="dark"]) .lib-detail-expanded .detail-imgs img,
:root:not([data-theme="dark"]) .lib-detail-expanded img {
  max-width: 100% !important;
  width: 100% !important;
  height: auto !important;
  border-radius: 12px;
  box-shadow: 0 8px 24px rgba(15, 23, 42, 0.08);
  border: 1px solid rgba(15, 23, 42, 0.06);
  cursor: zoom-in;
  display: block;
  margin: 0 auto;
  background: #fff;
}

/* 4) 标题：明显放大、收紧、蓝紫色；让"小节"有讲义感 */
:root:not([data-theme="dark"]) .lib-detail-expanded h2,
:root:not([data-theme="dark"]) .lib-detail-expanded h3,
:root:not([data-theme="dark"]) .lib-detail-expanded h4,
:root:not([data-theme="dark"]) .lib-detail-expanded .detail-section > strong:first-child,
:root:not([data-theme="dark"]) .lib-detail-expanded .detail-section > b:first-child {
  font-size: 17px !important;
  font-weight: 800 !important;
  color: #4f46e5 !important;
  margin: 22px 0 10px !important;
  letter-spacing: 0.01em;
  display: block;
}

/* 5) 正文段落：行高、字号收口 */
:root:not([data-theme="dark"]) .lib-detail-expanded p,
:root:not([data-theme="dark"]) .lib-detail-expanded li,
:root:not([data-theme="dark"]) .lib-detail-expanded .rendered-content {
  font-size: 15.5px !important;
  line-height: 1.85 !important;
  color: #1f2937 !important;
}

/* 6) KaTeX 公式略微突出 */
:root:not([data-theme="dark"]) .lib-detail-expanded .katex {
  font-size: 1.18em !important;
}

/* 7) 行间公式独占一行 + 浅底色 + 横向滚动兜底 */
:root:not([data-theme="dark"]) .lib-detail-expanded .katex-display {
  margin: 18px 0 !important;
  padding: 12px 10px !important;
  background: rgba(238, 242, 255, 0.45);
  border-radius: 10px;
  overflow-x: auto;
}

/* 8) 小节之间细分隔，讲义感 */
:root:not([data-theme="dark"]) .lib-detail-expanded .detail-section {
  padding: 12px 0;
  border-bottom: 1px dashed rgba(99, 102, 241, 0.10);
}
:root:not([data-theme="dark"]) .lib-detail-expanded .detail-section:last-child {
  border-bottom: none;
}

/* 9) 列表态（折叠）不动：保险起见，明确只命名空间到 .lib-detail-expanded */
/*    这里不写规则，以避免误伤 .lib-card 的折叠展示 */

/* 10) 移动端：宽度自适应、字号略缩 */
@media (max-width: 720px) {
  :root:not([data-theme="dark"]) .lib-detail-expanded {
    padding: 12px 14px;
    font-size: 15px;
    line-height: 1.78;
  }
  :root:not([data-theme="dark"]) .lib-detail-expanded h2,
  :root:not([data-theme="dark"]) .lib-detail-expanded h3,
  :root:not([data-theme="dark"]) .lib-detail-expanded h4 {
    font-size: 16px !important;
  }
  :root:not([data-theme="dark"]) .lib-detail-expanded .katex {
    font-size: 1.12em !important;
  }
}

/* ====== APP_66_DETAIL_READING_END ====== */

/* ====== BATCH03_IMG_BIG_START ======
   批次3：详情图片大图（库展开 + 详情弹窗）
   - 宽度容器 95%，最大高 70vh，object-fit:contain
   - 竖列铺图，居中
   - 不动：复习卡 .rc-images、富文本 .rendered-content img
   - 不动字号/行距/整体宽度；不动暗色模式
*/

/* === 库展开：竖列大图 === */
.lib-detail-expanded .lde-imgs {
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  gap: 12px !important;
  margin-top: 8px !important;
}
.lib-detail-expanded .lde-imgs img {
  width: 95% !important;
  height: auto !important;
  max-height: 70vh !important;
  object-fit: contain !important;
  border-radius: 10px !important;
  border: 1px solid var(--border) !important;
  cursor: pointer !important;
  display: block !important;
}

/* === 详情弹窗：竖列大图 === */
#detailContent .detail-imgs {
  display: flex !important;
  flex-direction: column !important;
  align-items: center !important;
  gap: 12px !important;
  margin-top: 8px !important;
  /* 取消原 grid 布局 */
  grid-template-columns: none !important;
}
#detailContent .detail-imgs img {
  width: 95% !important;
  height: auto !important;
  max-height: 70vh !important;
  object-fit: contain !important;
  border-radius: 10px !important;
  border: 1px solid var(--border) !important;
  cursor: pointer !important;
  display: block !important;
}
/* ====== BATCH03_IMG_BIG_END ====== */


/* ====== BATCH04_READ_SPACING_START ======
   批次4：阅读留白
   - 段落间距 12px（库展开 .lib-detail-expanded + 详情弹窗 #detailContent + 内嵌富文本）
   - 标签换行：lde-label / detail-section 内 b:first-child 独占一行
   - 公式 .katex-display：保持现有 12px 不动（已足够呼吸）
   - 不动复习卡、不动字号、不动行距、不动整体宽度
*/

/* === 1. 库展开：字段间距 + 标签换行 === */
.lib-detail-expanded .lde-field {
  margin-bottom: 12px !important;
}
.lib-detail-expanded .lde-field:last-child {
  margin-bottom: 0 !important;
}
.lib-detail-expanded .lde-label {
  display: block !important;
  margin-bottom: 4px !important;
}

/* === 2. 详情弹窗：段落间距 + 标签换行 === */
/* 排除 .detail-imgs（批次3 已专门处理） */
#detailContent .detail-section > p,
#detailContent .detail-section > div:not(.detail-imgs) {
  margin-top: 12px !important;
  margin-bottom: 12px !important;
}
#detailContent .detail-section > p > b:first-child,
#detailContent .detail-section > div > b:first-child {
  display: block !important;
  margin-bottom: 4px !important;
}

/* === 3. 富文本段落（仅作用于库展开 / 详情弹窗 内部） === */
.lib-detail-expanded .rendered-content p,
#detailContent .rendered-content p {
  margin: 12px 0 !important;
}

/* ====== BATCH04_READ_SPACING_END ====== */


/* ====== BATCH06_MODE_TAB_START ======
   批次6：模式切换 tab（复习 / 阅读 / 讲义）
   - segmented control（iOS 风）整合进 .skin-topbar 中段
   - 切换通过 .container[data-skin-mode] 控制显隐
   - 不动原内容、不动 app.html、不动复习/SM-2
*/

/* === skin-topbar 内部三段式 === */
.skin-topbar {
  flex-wrap: wrap;
}
.skin-topbar > .skin-crumb {
  flex: 0 1 auto;
}
.skin-topbar > .skin-mode-switch {
  flex: 1 1 auto;
  display: flex;
  justify-content: center;
}
.skin-topbar > .skin-quickstats {
  flex: 0 1 auto;
  margin-left: auto;
}

/* === segmented control 容器 === */
.skin-mode-switch {
  display: inline-flex;
  align-items: center;
  gap: 0;
  padding: 3px;
  border-radius: 999px;
  background: rgba(15,23,42,0.06);
  border: 1px solid rgba(124,58,237,.10);
}

/* 暗色：用暖棕半透明 */
[data-theme="dark"] .skin-mode-switch {
  background: rgba(232,168,124,.10);
  border-color: rgba(232,168,124,.20);
}

/* === segmented 单个按钮 === */
.skin-mode-btn {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 14px;
  border: 0;
  background: transparent;
  border-radius: 999px;
  font-size: 12.5px;
  font-weight: 700;
  color: #475569;
  cursor: pointer;
  font-family: inherit;
  transition: background .15s, color .15s, box-shadow .15s, transform .12s;
  white-space: nowrap;
  letter-spacing: .2px;
}
.skin-mode-btn:hover {
  color: #1e293b;
}
.skin-mode-btn.is-active {
  background: #ffffff;
  color: #6d28d9;
  font-weight: 900;
  box-shadow:
    0 6px 14px rgba(15,23,42,.08),
    inset 0 0 0 1px rgba(255,255,255,.9);
}
.skin-mode-btn .smb-icon {
  font-size: 14px;
  line-height: 1;
}

/* 暗色模式 active */
[data-theme="dark"] .skin-mode-btn {
  color: #c4a882;
}
[data-theme="dark"] .skin-mode-btn:hover {
  color: #e8ddd0;
}
[data-theme="dark"] .skin-mode-btn.is-active {
  background: rgba(232,168,124,.16);
  color: #e8a87c;
  box-shadow:
    0 6px 14px rgba(0,0,0,.18),
    inset 0 0 0 1px rgba(232,168,124,.28);
}

/* === 模式切换：用 .container[data-skin-mode] 控制显隐 === */

/* 复习模式（默认）：原内容全部显示，两个新容器隐藏 */
.container:not([data-skin-mode]),
.container[data-skin-mode="review"] {
  /* 用属性选择器隐藏阅读/讲义容器 */
}
.container:not([data-skin-mode]) > #lecture-mode-reader,
.container[data-skin-mode="review"] > #lecture-mode-reader,
.container:not([data-skin-mode]) > #lecture-mode-lecture,
.container[data-skin-mode="review"] > #lecture-mode-lecture {
  display: none !important;
}

/* 阅读模式：原 .tab-content 全部隐藏，仅显示 #lecture-mode-reader 和 .skin-topbar */
.container[data-skin-mode="reader"] > .tab-content,
.container[data-skin-mode="reader"] > .header,
.container[data-skin-mode="reader"] > .storage-card,
.container[data-skin-mode="reader"] > #lecture-mode-lecture {
  display: none !important;
}
.container[data-skin-mode="reader"] > #lecture-mode-reader {
  display: block !important;
}

/* 讲义模式：同上，反过来 */
.container[data-skin-mode="lecture"] > .tab-content,
.container[data-skin-mode="lecture"] > .header,
.container[data-skin-mode="lecture"] > .storage-card,
.container[data-skin-mode="lecture"] > #lecture-mode-reader {
  display: none !important;
}
.container[data-skin-mode="lecture"] > #lecture-mode-lecture {
  display: block !important;
}

/* === 占位卡片样式 === */
.lecture-placeholder {
  margin: 16px 0;
  padding: 60px 24px;
  text-align: center;
  background: var(--bg2);
  border: 1.5px dashed var(--border2);
  border-radius: 18px;
  color: var(--text2);
}
.lecture-placeholder .lp-icon {
  font-size: 56px;
  margin-bottom: 12px;
  line-height: 1;
}
.lecture-placeholder .lp-title {
  font-size: 18px;
  font-weight: 800;
  color: var(--accent);
  margin-bottom: 8px;
}
.lecture-placeholder .lp-desc {
  font-size: 13.5px;
  color: var(--text3);
  max-width: 480px;
  margin: 0 auto;
  line-height: 1.7;
}

/* === 移动端兼容 === */
@media (max-width: 700px) {
  .skin-topbar > .skin-mode-switch {
    order: 3;
    flex: 1 1 100%;
    margin-top: 6px;
  }
  .skin-mode-btn {
    padding: 6px 10px;
    font-size: 12px;
  }
  .skin-mode-btn .smb-icon {
    font-size: 13px;
  }
}
/* ====== BATCH06_MODE_TAB_END ====== */



/* ====== BATCH08_READER_FILTERS_START ======
   批次8：阅读模式扩展筛选 + 修复批次7 数据接入 bug
*/
.lecture-reader-toolbar {
  display: flex; flex-direction: column; align-items: stretch;
  gap: 10px; padding: 14px 16px; margin: 16px 0;
  background: var(--bg2); border: 1.5px solid var(--border);
  border-radius: 14px; box-shadow: 0 2px 12px var(--shadow);
}
.lecture-reader-toolbar .lrt-row {
  display: flex; flex-wrap: wrap; align-items: center; gap: 10px;
}
.lecture-reader-toolbar .lrt-row-1 .lrt-title {
  font-size: 15px; font-weight: 800; color: var(--accent); flex: 0 0 auto;
}
.lecture-reader-toolbar .lrt-search {
  flex: 1 1 240px; padding: 7px 12px; border-radius: 9px;
  border: 1px solid var(--border2); background: var(--bg3);
  color: var(--text); font-size: 13.5px; font-family: inherit; outline: none;
}
.lecture-reader-toolbar .lrt-search:focus {
  border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent3);
}
.lecture-reader-toolbar .lrt-count {
  font-size: 12.5px; color: var(--text3); font-weight: 800;
  padding: 4px 12px; background: var(--bg3); border-radius: 999px; white-space: nowrap;
}
.lecture-reader-toolbar .lrt-field {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 12.5px; color: var(--text2); font-weight: 700;
}
.lecture-reader-toolbar .lrt-field select {
  padding: 5px 28px 5px 10px; border-radius: 9px;
  border: 1px solid var(--border2); background: var(--bg3);
  color: var(--text); font-size: 13px; font-family: inherit;
  cursor: pointer; appearance: none; -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10'%3E%3Cpath fill='%23999' d='M5 7L0 2h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 9px center;
}
.lecture-reader-toolbar .lrt-clear {
  margin-left: auto; padding: 5px 12px;
  border: 1px solid var(--border2); background: var(--bg3);
  color: var(--text2); border-radius: 9px;
  font-size: 12px; font-weight: 700; cursor: pointer; font-family: inherit;
}
.lecture-reader-toolbar .lrt-clear:hover {
  background: var(--accent3); border-color: var(--accent); color: var(--accent);
}

.lecture-reader-list { display: flex; flex-direction: column; gap: 18px; padding-bottom: 32px; }
.lecture-reader-empty { text-align: center; padding: 60px 20px; color: var(--text3); }
.lecture-reader-empty .lre-icon { font-size: 56px; margin-bottom: 12px; }
.lecture-reader-empty .lre-title { font-size: 16px; font-weight: 800; color: var(--accent); margin-bottom: 6px; }
.lecture-reader-empty .lre-desc { font-size: 13px; }

.lecture-card {
  background: var(--bg2); border: 1.5px solid var(--border);
  border-radius: 18px; padding: 22px 24px; box-shadow: 0 2px 12px var(--shadow);
}
.lecture-card .lc-imgs { display: flex; flex-direction: column; align-items: center; gap: 12px; margin-bottom: 16px; }
.lecture-card .lc-imgs img {
  width: 95%; height: auto; max-height: 70vh; object-fit: contain;
  border-radius: 12px; border: 1px solid var(--border); cursor: pointer; display: block;
}
.lecture-card .lc-head { display: flex; align-items: flex-start; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.lecture-card .lc-title {
  flex: 1 1 auto; font-size: 18px; font-weight: 800; color: var(--accent);
  line-height: 1.55; word-break: break-word; white-space: pre-line; margin: 0;
}
.lecture-card .lc-title.rendered-content p { margin: 0 0 4px; }
.lecture-card .lc-type-badge {
  flex-shrink: 0; font-size: 11.5px; font-weight: 700;
  padding: 3px 10px; border-radius: 999px;
  background: var(--accent3); color: var(--accent); white-space: nowrap;
}
.lecture-card .lc-fields { display: flex; flex-direction: column; gap: 14px; margin-bottom: 14px; }
.lecture-card .lc-field-label {
  display: block; font-size: 12px; color: var(--text3);
  font-weight: 700; margin-bottom: 4px; letter-spacing: .2px;
}
.lecture-card .lc-field-value {
  font-size: 14px; color: var(--text); line-height: 1.7;
  white-space: pre-line; word-break: break-word;
}
.lecture-card .lc-field-value.rendered-content p { margin: 8px 0; }
.lecture-card .lc-meta { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; }
.lecture-card .lc-meta-tag {
  font-size: 11.5px; padding: 2px 9px; border-radius: 6px;
  background: var(--bg3); color: var(--text2);
  border: 1px solid var(--border); white-space: nowrap;
}
.lecture-card .lc-meta-subject { background: var(--blue3); color: var(--blue2); border-color: transparent; }
.lecture-card .lc-meta-diff    { background: var(--yellow3); color: var(--yellow2); border-color: transparent; }
.lecture-card .lc-meta-err     { background: var(--red3); color: var(--red2); border-color: transparent; }
.lecture-card .lc-note {
  font-size: 12.5px; color: var(--text2); padding: 8px 12px;
  background: var(--bg3); border-left: 3px solid var(--accent3);
  border-radius: 6px; margin-bottom: 10px; font-style: italic;
}
.lecture-card .lc-foot {
  display: flex; align-items: center; gap: 8px; flex-wrap: wrap;
  padding-top: 12px; border-top: 1px dashed var(--border);
  font-size: 11.5px; color: var(--text3);
}
.lecture-card .lc-mastery { font-weight: 700; padding: 2px 9px; border-radius: 6px; }
.lecture-card .lc-mastery.ms-new       { background: var(--bg3); color: var(--text4); }
.lecture-card .lc-mastery.ms-learning  { background: var(--red3); color: var(--red2); }
.lecture-card .lc-mastery.ms-familiar  { background: var(--yellow3); color: var(--yellow2); }
.lecture-card .lc-mastery.ms-mastered  { background: var(--green3); color: var(--green2); }
.lecture-card .lc-r-info { color: var(--text2); }
.lecture-card .lc-r-info.lc-r-err { color: var(--red2); }

@media (max-width: 700px) {
  .lecture-reader-toolbar { padding: 10px 12px; }
  .lecture-card { padding: 16px 14px; }
  .lecture-card .lc-title { font-size: 16px; }
  .lecture-card .lc-field-value { font-size: 13.5px; }
  .lecture-reader-toolbar .lrt-clear { margin-left: 0; }
}
/* ====== BATCH08_READER_FILTERS_END ====== */




/* ====== BATCH11_READER_CLEAN_START ======
   批次11：拆除阅读模式右侧目录（目录功能将搬到卡片库）
   保留：工具条+单栏卡片+分页+左图右文
*/

/* 列表 */
.lecture-reader-list {
  display: flex; flex-direction: column; gap: 18px; padding-bottom: 8px;
}
.lecture-reader-empty { text-align:center; padding:60px 20px; color:var(--text3); }
.lecture-reader-empty .lre-icon  { font-size:56px; margin-bottom:12px; }
.lecture-reader-empty .lre-title { font-size:16px; font-weight:800; color:var(--accent); margin-bottom:6px; }
.lecture-reader-empty .lre-desc  { font-size:13px; }

/* 左图右文（仅 ≥1024px 启用 split） */
@media (min-width: 1024px) {
  .lecture-reader-list.lrl-split .lecture-card.has-imgs {
    display: flex; gap: 22px; align-items: flex-start;
  }
  .lecture-reader-list.lrl-split .lecture-card.has-imgs .lc-imgs {
    flex: 0 0 40%; margin-bottom: 0;
    position: sticky; top: 16px;
  }
  .lecture-reader-list.lrl-split .lecture-card.has-imgs .lc-imgs img {
    width: 100%; max-height: 60vh;
  }
  .lecture-reader-list.lrl-split .lecture-card.has-imgs .lc-content {
    flex: 1 1 60%; min-width: 0;
  }
}

/* 分页器 */
.lecture-reader-pagination {
  display: flex; align-items: center; justify-content: center;
  gap: 6px; flex-wrap: wrap; padding: 8px 0 28px;
}
.lecture-reader-pagination .lrp-btn {
  min-width: 34px; padding: 6px 10px; border-radius: 9px;
  border: 1.5px solid var(--border2); background: var(--bg2);
  color: var(--text2); cursor: pointer; font-family: inherit;
  font-size: 13px; font-weight: 700; transition: .2s;
}
.lecture-reader-pagination .lrp-btn:hover { border-color: var(--accent); color: var(--accent); }
.lecture-reader-pagination .lrp-btn.active {
  background: linear-gradient(135deg, var(--accent2), var(--accent));
  color: #fff; border-color: transparent;
}
.lecture-reader-pagination .lrp-btn.disabled { opacity: .35; pointer-events: none; }
.lecture-reader-pagination .lrp-info {
  margin-left: 8px; font-size: 12px; color: var(--text3); white-space: nowrap;
}

/* 分类下拉宽度 */
.lecture-reader-toolbar .lrt-category-select { max-width: 260px; }

/* 移动端：版式开关失效（用户感觉得到禁用） */
@media (max-width: 1023px) {
  .lecture-reader-toolbar [data-lr-key="layout"] {
    pointer-events: none; opacity: .4;
  }
}
/* ====== BATCH11_READER_CLEAN_END ====== */


/* ====== BATCH12_LIBRARY_TOC_START ======
   批次12：卡片库右侧目录（≥1280px 显示）
   按分类/章节/学科分组，章节可折叠，跨页跳转
*/
.library-toc {
  position: fixed; right: 16px; top: 80px;
  width: 250px; max-height: calc(100vh - 100px);
  background: var(--bg2); border: 1.5px solid var(--border);
  border-radius: 14px; box-shadow: 0 4px 16px var(--shadow2);
  padding: 0; z-index: 50; overflow: hidden;
  display: none; font-family: inherit;
}
@media (min-width: 1280px) {
  body[data-lib-active="1"] .library-toc { display: flex; flex-direction: column; }
}
.lt-head {
  flex: 0 0 auto; padding: 10px 12px;
  border-bottom: 1px solid var(--border); background: var(--bg3);
}
.lt-head-row { display: flex; align-items: center; gap: 6px; margin-bottom: 6px; }
.lt-title { font-size: 13px; font-weight: 800; color: var(--accent); flex: 1 1 auto; }
.lt-total { font-size: 11.5px; color: var(--text3); font-weight: 700; }
.lt-group-select {
  width: 100%; padding: 4px 22px 4px 8px; font-size: 12px; font-family: inherit;
  border-radius: 7px; border: 1px solid var(--border2); background: var(--bg2);
  color: var(--text); cursor: pointer; appearance: none; -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10'%3E%3Cpath fill='%23999' d='M5 7L0 2h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 7px center;
}
.lt-body { flex: 1 1 auto; overflow-y: auto; padding: 6px 8px 12px; }
.lt-empty { padding: 30px 10px; text-align: center; color: var(--text3); font-size: 12px; }
.lt-group { margin-bottom: 6px; }
.lt-group-title {
  display: flex; align-items: center; gap: 5px;
  padding: 6px 8px; border-radius: 7px;
  font-size: 13px; font-weight: 800; color: var(--text);
  background: var(--accent3); cursor: pointer; user-select: none;
  margin-bottom: 3px;
}
.lt-group-title:hover { background: var(--accent2); color: #fff; }
.lt-fold-arrow { font-size: 10px; color: var(--text3); flex: 0 0 auto; transition: .15s; }
.lt-group-title:hover .lt-fold-arrow { color: #fff; }
.lt-group-name {
  flex: 1 1 auto; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.lt-group-count { flex: 0 0 auto; font-size: 11px; color: var(--text3); font-weight: 700; }
.lt-group-title:hover .lt-group-count { color: rgba(255,255,255,.85); }
.lt-item {
  display: flex; align-items: center; gap: 6px;
  padding: 5px 8px 5px 20px; border-radius: 7px;
  font-size: 13px; color: var(--text2); cursor: pointer;
  border-left: 3px solid transparent; user-select: none;
  margin-bottom: 1px; transition: .12s;
}
.lt-item:hover {
  background: var(--accent3); color: var(--accent);
  border-left-color: var(--accent);
}
.lt-mastery { width: 7px; height: 7px; border-radius: 50%; flex-shrink: 0; }
.lt-mastery.ms-new       { background: var(--text4); }
.lt-mastery.ms-learning  { background: var(--red); }
.lt-mastery.ms-familiar  { background: var(--yellow); }
.lt-mastery.ms-mastered  { background: var(--green); }
.lt-icon { font-size: 12px; flex-shrink: 0; }
.lt-label {
  flex: 1 1 auto; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}

/* 跳转闪烁 */
.lib-card.lib-card-flash { animation: libCardFlash 1.5s ease; }
@keyframes libCardFlash {
  0%, 100% { box-shadow: 0 3px 12px var(--shadow2); }
  20%, 60% { box-shadow: 0 0 0 4px var(--accent3), 0 4px 16px rgba(124,58,237,.35); }
}

/* 滚动条美化 */
.lt-body::-webkit-scrollbar { width: 6px; }
.lt-body::-webkit-scrollbar-thumb { background: var(--border2); border-radius: 3px; }
.lt-body::-webkit-scrollbar-thumb:hover { background: var(--accent3); }

/* 主内容右侧留出目录空间（仅 ≥1280px 且 library tab） */
@media (min-width: 1280px) {
  body[data-lib-active="1"] #tab-library { padding-right: 270px; }
}
/* ====== BATCH12_LIBRARY_TOC_END ====== */


/* ====== BATCH13B_THREE_COLUMN_LAYOUT_START ======
   批次13.5：app.html 三栏布局（仿 Obsidian）
   - body.flashcard-app-page 由 app-skin.js 加，避免影响其他页面
   - --fc-nav-width 由 app-skin.js 动态测量 nav 元素得出
*/
@media (min-width: 1280px) {
  /* 主容器：让出左侧 nav，铺开剩余空间 */
  body.flashcard-app-page .container {
    max-width: none !important;
    width: auto !important;
    margin-left: var(--fc-nav-width, 240px) !important;
    margin-right: 30px !important;
    box-sizing: border-box;
    padding-left: 24px;
    padding-right: 24px;
  }

  /* 卡片库激活时：再让出右侧目录空间（300px） */
  body.flashcard-app-page[data-lib-active="1"] .container {
    margin-right: 310px !important;
  }

  /* 取消批次12 的 padding-right（会双重挤压） */
  body.flashcard-app-page[data-lib-active="1"] #tab-library {
    padding-right: 0 !important;
  }

  /* 右侧目录：撑满全高，贴右 */
  body.flashcard-app-page .library-toc {
    top: 16px !important;
    right: 16px !important;
    bottom: 16px !important;
    max-height: calc(100vh - 32px) !important;
    width: 280px !important;
  }

  /* 阅读模式（覆盖批次10 的 1380px） */
  body.flashcard-app-page .container[data-skin-mode="reader"] {
    max-width: none !important;
    margin-left: var(--fc-nav-width, 240px) !important;
    margin-right: 30px !important;
  }
}

/* 1024-1279px：保持原样（已经合理） */
@media (min-width: 1024px) and (max-width: 1279px) {
  body.flashcard-app-page .container {
    /* 走 globals.css 默认 */
  }
}
/* ====== BATCH13B_THREE_COLUMN_LAYOUT_END ====== */


/* ====== BATCH18_ADD_TO_LECTURE_START ======
   批次18：加入讲义按钮 + 弹窗（卡片库点 ➕ 用）
*/
.lib-acts button[data-flc-add-lecture] {
  background: rgba(124,58,237,.12);
  color: #7c3aed;
  border: 1px solid rgba(124,58,237,.30);
  font-weight: 900;
}
.lib-acts button[data-flc-add-lecture]:hover {
  background: rgba(124,58,237,.22);
  color: #5b21b6;
}

.flc-add-mask {
  position: fixed; inset: 0; z-index: 2147482000;
  display: none; align-items: flex-start; justify-content: center;
  background: rgba(15,23,42,.55);
  -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px);
  padding: 60px 20px 20px;
}
.flc-add-mask.show { display: flex; }

.flc-add-modal {
  width: min(560px, 96vw);
  max-height: calc(100vh - 80px);
  background: linear-gradient(180deg, #ffffff, #fdf6ee);
  border-radius: 18px;
  box-shadow: 0 28px 80px rgba(15,23,42,.28);
  display: flex; flex-direction: column; overflow: hidden;
}
.flc-add-head {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 18px;
  border-bottom: 1.5px solid rgba(0,0,0,.06);
  flex-wrap: wrap;
}
.flc-add-head h3 {
  margin: 0; font-size: 17px; font-weight: 900; color: #0f172a;
}
.flc-add-count {
  color: #7c3aed; font-weight: 800; font-size: 12px;
}
.flc-add-x {
  margin-left: auto; width: 30px; height: 30px;
  border-radius: 50%; border: 0;
  background: rgba(15,23,42,.05);
  font-size: 18px; cursor: pointer; color: #64748b;
}
.flc-add-x:hover { background: rgba(220,38,38,.12); color: #dc2626; }

.flc-add-body {
  padding: 14px 18px; overflow-y: auto; flex: 1;
  display: flex; flex-direction: column; gap: 12px;
}
.flc-add-row {
  display: flex; gap: 10px; align-items: center; flex-wrap: wrap;
}
.flc-add-label {
  font-size: 12.5px; font-weight: 800; color: #0f172a;
}
.flc-add-row select {
  padding: 6px 10px;
  border: 1.5px solid rgba(0,0,0,.10);
  border-radius: 8px;
  background: #ffffff; font-family: inherit;
  font-size: 12.5px; color: #0f172a; cursor: pointer;
}
.flc-add-list {
  display: flex; flex-direction: column; gap: 6px;
  max-height: 320px; overflow-y: auto;
}
.flc-add-empty {
  text-align: center; color: #94a3b8;
  padding: 30px 10px; font-size: 13px; line-height: 1.6;
}
.flc-add-book {
  display: flex; align-items: center; gap: 10px;
  padding: 8px 12px;
  border: 1.5px solid rgba(0,0,0,.08);
  border-radius: 12px;
  cursor: pointer; transition: .15s;
  background: rgba(255,255,255,.65);
}
.flc-add-book:hover {
  background: rgba(124,58,237,.05);
  border-color: rgba(124,58,237,.25);
}
.flc-add-book.selected {
  background: rgba(124,58,237,.10);
  border-color: #7c3aed;
  box-shadow: 0 4px 12px rgba(124,58,237,.18);
}
.flc-add-emoji {
  width: 36px; height: 36px; border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  font-size: 20px; color: #ffffff; flex-shrink: 0;
}
.flc-add-bm { flex: 1 1 auto; min-width: 0; }
.flc-add-bt {
  font-size: 13.5px; font-weight: 800; color: #0f172a;
  line-height: 1.3;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.flc-add-bs {
  font-size: 11.5px; color: #94a3b8;
  margin-top: 2px; font-weight: 700;
}
.flc-add-foot {
  display: flex; gap: 10px; justify-content: flex-end;
  padding: 12px 18px;
  border-top: 1.5px solid rgba(0,0,0,.06);
}
/* ====== BATCH18_ADD_TO_LECTURE_END ====== */

/* ========== BATCH_FLUSH_FLASHCARD_START ==========
   闪卡 .container 全宽（不动 app.html，靠 CSS 覆盖）
*/
@media (min-width: 901px) {
  body .container {
    max-width: none !important;
    margin: 0 !important;
    padding-top: 22px;
    padding-left: 24px !important;
    padding-right: 24px !important;
    padding-bottom: 80px;
    box-sizing: border-box;
  }
}

@media (min-width: 1280px) {
  body.flashcard-app-page .container {
    padding-left: 28px !important;
    padding-right: 28px !important;
  }
}

/* 阅读 / 讲义模式同样铺满 */
@media (min-width: 901px) {
  body .container[data-skin-mode="reader"],
  body .container[data-skin-mode="lecture"] {
    max-width: none !important;
  }
}

/* 段落阅读宽度：在 .container 里给"长文本"单独限宽，避免一行拖太长 */
@media (min-width: 901px) {
  .lecture-card .lc-content,
  .lib-detail-expanded .rendered-content,
  .lecture-reader-list:not(.lrl-split) .lecture-card {
    /* 阅读舒适宽度 */
  }
}
/* ========== BATCH_FLUSH_FLASHCARD_END ========== */

/* ========== BATCH_FLUSH2_KILL_DOUBLE_MARGIN_START ==========
   修中间空一大块根因：BATCH13B 给 body.flashcard-app-page .container
   加了 margin-left: 240px，但 body 本身已经 padding-left: 240px。
   这里用更高 specificity 强覆盖。
*/

@media (min-width: 901px) {
  html body.flashcard-app-page .container,
  html body .container {
    max-width: none !important;
    width: auto !important;
    margin-left: 0 !important;
    margin-right: 0 !important;
    padding-left: 24px !important;
    padding-right: 24px !important;
    padding-top: 22px;
    padding-bottom: 80px;
    box-sizing: border-box;
  }
}

@media (min-width: 1280px) {
  html body.flashcard-app-page .container {
    padding-left: 28px !important;
    padding-right: 28px !important;
  }
  /* 卡片库激活时让出右侧 toc：280px + 30px */
  html body.flashcard-app-page[data-lib-active="1"] .container {
    padding-right: 310px !important;
  }
}

/* 顶部条铺满 */
.skin-topbar {
  width: 100% !important;
  box-sizing: border-box !important;
}

/* 讲义列表网格平板/手机更紧凑 */
@media (max-width: 1023px) {
  .lm-books-grid {
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)) !important;
  }
}
@media (max-width: 700px) {
  .lm-books-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 10px !important;
  }
}

/* ========== BATCH_FLUSH2_KILL_DOUBLE_MARGIN_END ========== */

/* ========== BATCH_LIBRARY_FORM_RESTORE_START ==========
   卡片库加卡片表单恢复单列：
   - 取消 APP_51 的左右分栏 grid
   - dynamicFormArea 恢复 100% 宽
   - 难度/来源/错因默认折叠，由 app-skin.js 注入「更多字段」按钮控制
*/

/* 1) 强制取消 APP_51 的加卡片双栏 grid */
@media (min-width: 1024px) {
  #tab-library .card:has(#dynamicFormArea) {
    display: block !important;
    grid-template-columns: none !important;
    gap: 0 !important;
  }

  #tab-library .card:has(#dynamicFormArea) > h2,
  #tab-library .card:has(#dynamicFormArea) > .mt,
  #tab-library .card:has(#dynamicFormArea) .lib-type-tabs,
  #tab-library .card:has(#dynamicFormArea) #dynamicFormArea,
  #tab-library .card:has(#dynamicFormArea) > .fr,
  #tab-library .card:has(#dynamicFormArea) > .fr3,
  #tab-library .card:has(#dynamicFormArea) > #pastedImagePreview,
  #tab-library .card:has(#dynamicFormArea) > .btn-p {
    grid-column: auto !important;
    grid-row: auto !important;
  }
}

/* 2) 动态字段恢复全宽 */
#tab-library #dynamicFormArea,
#tab-library #dynamicFormArea .dynamic-fields,
#tab-library #dynamicFormArea .fg,
#tab-library #dynamicFormArea textarea,
#tab-library #dynamicFormArea .ft {
  width: 100% !important;
  max-width: none !important;
  box-sizing: border-box !important;
}

#tab-library #dynamicFormArea .fg {
  margin-bottom: 10px !important;
}

#tab-library #dynamicFormArea .ft {
  min-height: 58px;
}

/* textarea 类型字段稍高一点 */
#tab-library #dynamicFormArea textarea[rows="3"] {
  min-height: 84px;
}

/* 3) 更多字段：默认隐藏 难度/来源/错因 所在 fr3 */
#tab-library .card:has(#dynamicFormArea) > .fr3:has(#cl_difficulty),
#tab-library .card:has(#dynamicFormArea) > .fr3:has(#cl_source),
#tab-library .card:has(#dynamicFormArea) > .fr3:has(#cl_errorReason) {
  display: none !important;
}

/* 展开后显示 */
body.fc-more-card-fields-open #tab-library .card:has(#dynamicFormArea) > .fr3:has(#cl_difficulty),
body.fc-more-card-fields-open #tab-library .card:has(#dynamicFormArea) > .fr3:has(#cl_source),
body.fc-more-card-fields-open #tab-library .card:has(#dynamicFormArea) > .fr3:has(#cl_errorReason) {
  display: grid !important;
  grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
  gap: 10px !important;
}

/* 小屏展开后改单列 */
@media (max-width: 700px) {
  body.fc-more-card-fields-open #tab-library .card:has(#dynamicFormArea) > .fr3:has(#cl_difficulty),
  body.fc-more-card-fields-open #tab-library .card:has(#dynamicFormArea) > .fr3:has(#cl_source),
  body.fc-more-card-fields-open #tab-library .card:has(#dynamicFormArea) > .fr3:has(#cl_errorReason) {
    grid-template-columns: 1fr !important;
  }
}

/* 4) 更多字段按钮 */
.fc-more-card-fields-toggle {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  width: auto;
  margin: 6px 0 12px;
  padding: 6px 12px;
  border-radius: 999px;
  border: 1.5px dashed rgba(124,58,237,.28);
  background: rgba(255,255,255,.68);
  color: #6d28d9;
  font-size: 12.5px;
  font-weight: 900;
  cursor: pointer;
  font-family: inherit;
  transition: .15s;
}
.fc-more-card-fields-toggle:hover {
  background: rgba(124,58,237,.08);
  border-color: rgba(124,58,237,.46);
  transform: translateY(-1px);
}

/* 5) 卡片库有右侧目录时，内容区靠近目录，不再留一大片空 */
@media (min-width: 1280px) {
  html body.flashcard-app-page[data-lib-active="1"] .container {
    width: calc(100vw - var(--fc-nav-width, 240px) - 304px) !important;
    max-width: calc(100vw - var(--fc-nav-width, 240px) - 304px) !important;
    margin-left: 0 !important;
    margin-right: 304px !important;
    padding-left: 28px !important;
    padding-right: 18px !important;
    box-sizing: border-box !important;
  }

  html body.flashcard-app-page[data-lib-active="1"] #tab-library {
    padding-right: 0 !important;
    width: 100% !important;
  }

  html body.flashcard-app-page[data-lib-active="1"] #tab-library > .card,
  html body.flashcard-app-page[data-lib-active="1"] .skin-topbar {
    width: 100% !important;
    max-width: none !important;
    box-sizing: border-box !important;
  }

  html body.flashcard-app-page[data-lib-active="1"] .library-toc {
    right: 16px !important;
    width: 280px !important;
  }
}

/* ========== BATCH_LIBRARY_FORM_RESTORE_END ========== */