:root {
  /* 色板：沿用设计稿 —— 深科技蓝 #1A5DE0 + 青绿 #26C4A0 */
  color-scheme: light;
  /* 下拉自绘箭头（chevron，muted 色）——select 统一外观用 */
  --select-arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235d6d92' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  --primary: #1a5de0; --primary-2: #2c6bff; --primary-deep: #1246b8; --primary-soft: #e8f2fc;
  --teal: #26c4a0; --teal-soft: #e0f7f1;
  --bg-1: #eef4fe; --bg-2: #e2ecfb; --bg-blob-1: rgba(26, 93, 224, .16); --bg-blob-2: rgba(38, 196, 160, .16); --bg-blob-3: rgba(124, 92, 246, .12);
  --surface: #ffffff; --surface-2: #f5f9ff; --surface-3: #eaf1fc;
  --border: #dfe7f4; --border-strong: #c7d5ec;
  --text: #16233f; --muted: #5d6d92; --faint: #61708f;
  --input-bg: #f6f9ff;
  --nav-bg: #fbfdff;
  --nav-active-bg: #e8f2fc; --nav-active-text: #1a5de0;
  --link: #1a5de0;
  --shadow: 0 20px 45px -18px rgba(30, 70, 180, .28);
  --shadow-sm: 0 10px 24px -12px rgba(30, 70, 180, .18);
  --ring: rgba(26, 93, 224, .22);
  --error: #e5484d; --error-bg: rgba(229, 72, 77, .08); --error-border: rgba(229, 72, 77, .4);
  --success: #11906a; --success-bg: rgba(38, 196, 160, .14);
  --scrim: rgba(18, 40, 90, .35);
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Consolas, "Roboto Mono", monospace;
}
[data-theme="dark"] {
  color-scheme: dark;
  /* 深色主题下 chevron 用深色主题的 muted 色 */
  --select-arrow: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2396a6cc' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  --primary: #4f8bff; --primary-2: #6ea3ff; --primary-deep: #5c93f8; --primary-soft: rgba(79, 139, 255, .16);
  --teal: #34d9b4; --teal-soft: rgba(52, 217, 180, .14);
  --bg-1: #0a1026; --bg-2: #0e1733; --bg-blob-1: rgba(53, 103, 255, .26); --bg-blob-2: rgba(52, 217, 180, .15); --bg-blob-3: rgba(124, 120, 255, .18);
  --surface: #121b38; --surface-2: #0d1530; --surface-3: #1a2547;
  --border: #253154; --border-strong: #35436e;
  --text: #e7edfb; --muted: #96a6cc; --faint: #7c8cb8;
  --input-bg: #0d1530;
  --nav-bg: #101830;
  --nav-active-bg: rgba(79, 139, 255, .18); --nav-active-text: #8db4ff;
  --link: #8db4ff;
  --shadow: 0 22px 50px -18px rgba(0, 0, 0, .55);
  --shadow-sm: 0 12px 26px -14px rgba(0, 0, 0, .45);
  --ring: rgba(79, 139, 255, .35);
  --error: #ff6b70; --error-bg: rgba(255, 107, 112, .1); --error-border: rgba(255, 107, 112, .4);
  --success: #3ddcb6; --success-bg: rgba(52, 217, 180, .14);
  --scrim: rgba(0, 0, 0, .5);
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }
body {
  margin: 0; min-height: 100vh;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "HarmonyOS Sans SC", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  color: var(--text);
  background: linear-gradient(160deg, var(--bg-1), var(--bg-2) 55%, var(--bg-1));
  transition: background-color .35s, color .35s;
  overflow-x: hidden;
}
[hidden] { display: none !important; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }
button, a, input, .nav-item { touch-action: manipulation; }
.brand-logo, .auth-logo { display: block; }

/* 悬浮装饰光斑（纯 CSS，移动端更省性能） */
.deco { position: fixed; inset: 0; z-index: 0; overflow: hidden; pointer-events: none; }
.deco i { position: absolute; border-radius: 50%; filter: blur(56px); opacity: .9; }
.deco i:nth-child(1) { width: 340px; height: 340px; left: -80px; top: -60px; background: var(--bg-blob-1); animation: drift 26s ease-in-out infinite alternate; }
.deco i:nth-child(2) { width: 300px; height: 300px; right: -70px; top: 20%; background: var(--bg-blob-2); animation: drift 32s ease-in-out infinite alternate-reverse; }
.deco i:nth-child(3) { width: 260px; height: 260px; left: 30%; bottom: -90px; background: var(--bg-blob-3); animation: drift 38s ease-in-out infinite alternate; }
@keyframes drift { from { transform: translate3d(0, 0, 0) scale(1); } to { transform: translate3d(40px, -30px, 0) scale(1.08); } }
@media (prefers-reduced-motion: reduce) { .deco i { animation: none; } }
/* ---------- 顶栏 ---------- */
.app { position: relative; z-index: 1; width: min(1160px, 100%); margin: 0 auto; padding: calc(20px + env(safe-area-inset-top, 0px)) 20px calc(28px + env(safe-area-inset-bottom, 0px)); min-height: 100vh; display: flex; flex-direction: column; }
/* 大屏宽版：桌面大显示器下显示更多内容（列表 / 统计 / 设置同步加宽） */
@media (min-width: 1440px) {
  .app { width: min(1560px, 100% - 48px); }
}
@media (min-width: 1800px) {
  .app { width: min(1760px, 100% - 48px); }
}
.app-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 20px; }
.brand { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand-logo { width: 42px; height: 42px; flex: none; border-radius: 10px; box-shadow: 0 8px 18px -8px rgba(26, 93, 224, .55); }
.brand-text { min-width: 0; line-height: 1.2; }
.brand-name { display: block; font-size: 1.16rem; font-weight: 800; letter-spacing: .01em; }
.brand-sub { display: block; font-size: .78rem; color: var(--muted); margin-top: 2px; }
.top-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.icon-btn { width: 42px; height: 42px; min-width: 42px; border-radius: 12px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--border); background: var(--surface); color: var(--text); cursor: pointer; transition: background-color .18s, border-color .18s, transform .12s; padding: 0; text-decoration: none; -webkit-tap-highlight-color: transparent; }
.icon-btn:hover { background: var(--surface-2); border-color: var(--border-strong); }
.icon-btn:active { transform: scale(.94); }
.icon-btn svg { width: 20px; height: 20px; }
.icon-btn .icon-github { width: 19px; height: 19px; fill: currentColor; }
/* 头部「关于」图标按钮：宽屏隐藏（侧边栏已有「关于项目」），
   ≤860px 侧边栏退场、底部导航不含关于项，由它在 GitHub 图标后补位 */
.icon-btn.about-top { display: none; }
@media (max-width: 860px) { .icon-btn.about-top { display: inline-flex; } }
.text-btn { height: 42px; padding: 0 15px; border-radius: 12px; display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--border); background: var(--surface); color: var(--text); font-size: .875rem; font-weight: 600; font-family: inherit; cursor: pointer; transition: background-color .18s, border-color .18s; text-decoration: none; -webkit-tap-highlight-color: transparent; }
.text-btn:hover { background: var(--surface-2); border-color: var(--border-strong); }
.text-btn svg { width: 16px; height: 16px; }
.text-btn:disabled { opacity: .6; cursor: not-allowed; }
/* 蓝底导航按钮（管理后台 / 返回前台）：与「生成短链」主按钮同款蓝色渐变 */
.text-btn.btn-blue { background: linear-gradient(135deg, var(--primary-2), var(--primary)); color: #fff; border-color: transparent; box-shadow: 0 8px 18px -10px rgba(26, 93, 224, .55); }
.text-btn.btn-blue:hover { filter: brightness(1.06); color: #fff; border-color: transparent; }

/* 主题图标初始显隐（避免闪烁） */
html[data-theme="light"] #icon-sun { display: none; }
html[data-theme="dark"] #icon-moon { display: none; }

/* ---------- 布局：桌面侧边栏 + 小屏底部导航 ---------- */
.app-body { display: grid; grid-template-columns: 216px 1fr; gap: 20px; align-items: start; }
.sidebar { position: sticky; top: calc(20px + env(safe-area-inset-top, 0px)); display: flex; flex-direction: column; gap: 6px; background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 10px; box-shadow: var(--shadow-sm); }
.nav-item { display: flex; align-items: center; gap: 10px; width: 100%; padding: 12px 14px; border: 0; border-radius: 11px; background: transparent; color: var(--muted); font-size: .92rem; font-weight: 600; font-family: inherit; cursor: pointer; text-align: left; position: relative; transition: background-color .16s, color .16s; -webkit-tap-highlight-color: transparent; text-decoration: none; }
.nav-item svg { width: 19px; height: 19px; flex: none; }
.nav-item:hover { background: var(--surface-2); color: var(--text); }
.nav-item.active { background: var(--nav-active-bg); color: var(--nav-active-text); }
.nav-item.active::before { content: ""; position: absolute; left: 0; top: 20%; bottom: 20%; width: 3px; border-radius: 3px; background: var(--primary); }
.nav-sep { height: 1px; margin: 6px 10px; background: var(--border); flex: none; }
/* 侧边栏「回收站」菜单项的计数徽标：推到行尾 */
.nav-item .nav-trash-count, .nav-item .nav-list-count { margin-left: auto; }

/* 底部导航（管理后台）：仅小窗口 / 移动端显示（≤860px），图标在上文字在下；
   各项 flex 均分 + 文本省略，不会横向溢出 */
.footer-nav { display: none; }
.footer-nav .nav-item span { max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.content { min-width: 0; display: flex; flex-direction: column; gap: 20px; }
/* 视图容器：内部卡片与图表区保持统一间距，避免贴边重叠 */
.view { display: flex; flex-direction: column; gap: 20px; min-width: 0; }
.card { background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: clamp(18px, 3vw, 26px); box-shadow: var(--shadow); }
.card-title { margin: 0 0 14px; font-size: 1.05rem; font-weight: 800; display: flex; align-items: center; gap: 8px; }
.card-title svg { width: 18px; height: 18px; color: var(--primary); }
.card-title-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 14px; }
.card-title-row .card-title { margin: 0; }
.card-desc { margin: -6px 0 16px; font-size: .85rem; color: var(--muted); }

/* ---------- 按钮 ---------- */
.btn-primary { height: 48px; padding: 0 22px; border: 0; border-radius: 12px; background: linear-gradient(135deg, var(--primary-2), var(--primary)); color: #fff; font-size: .95rem; font-weight: 700; font-family: inherit; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 8px; box-shadow: 0 10px 22px -10px rgba(26, 93, 224, .65), inset 0 1px 0 rgba(255, 255, 255, .18); transition: transform .12s, box-shadow .18s, filter .18s; -webkit-tap-highlight-color: transparent; }
.btn-primary svg { width: 18px; height: 18px; }
.btn-primary:hover { filter: brightness(1.06); box-shadow: 0 12px 26px -10px rgba(26, 93, 224, .7), inset 0 1px 0 rgba(255, 255, 255, .18); }
.btn-primary:active { transform: translateY(1px) scale(.99); }
.btn-primary:disabled { opacity: .65; cursor: not-allowed; filter: saturate(.7); transform: none; }
.btn-ghost { height: 44px; padding: 0 16px; border-radius: 12px; border: 1px solid var(--border); background: var(--surface); color: var(--text); font-weight: 600; font-size: .9rem; font-family: inherit; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; gap: 6px; transition: background-color .16s, border-color .16s; -webkit-tap-highlight-color: transparent; text-decoration: none; }
.btn-ghost:hover { background: var(--surface-2); border-color: var(--border-strong); }
.btn-ghost svg { width: 16px; height: 16px; flex: none; }
.btn-ghost .icon-github { fill: currentColor; }

/* ---------- 表单 ---------- */
/* 控件高度四档体系（新增控件请对号入座，勿再引入新档位）：
   1) 主 CTA / 主输入：48px（auth-form、#url-input）
   2) 工具栏：42px（search-wrap、tb-select、tb-btn，圆角 11）
   3) 标准表单：40px（opts-grid，圆角 10）
   4) 紧凑表单：38px（settings-card、edit-form、batch-row，圆角 9） */
.url-row { display: flex; gap: 10px; align-items: center; }
#url-input { flex: 1; min-width: 0; min-height: 48px; padding: 12px 16px; border-radius: 12px; border: 1px solid var(--border-strong); background: var(--input-bg); color: var(--text); font-size: .95rem; font-family: inherit; transition: border-color .18s, box-shadow .18s, background-color .18s; -webkit-appearance: none; }
#url-input::placeholder { color: var(--faint); }
#url-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px var(--ring); }
/* 锁定浏览器自动填充底色，避免输入框被渲染成黄/粉色 */
input:-webkit-autofill, #url-input:-webkit-autofill, #slug-input:-webkit-autofill, .auth-form input:-webkit-autofill { box-shadow: 0 0 0 1000px var(--input-bg) inset; -webkit-text-fill-color: var(--text); caret-color: var(--text); }
.slug-row { margin-top: 14px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.slug-label { font-size: .85rem; font-weight: 600; color: var(--muted); flex: none; }
.slug-toggle { display: inline-flex; align-items: center; gap: 6px; background: none; border: 0; padding: 8px 2px; color: var(--primary); font-weight: 700; font-size: .88rem; font-family: inherit; cursor: pointer; -webkit-tap-highlight-color: transparent; }
.slug-toggle svg { width: 15px; height: 15px; }
#slug-input { flex: 1; min-width: 180px; min-height: 44px; padding: 10px 14px; border-radius: 11px; border: 1px solid var(--border-strong); background: var(--input-bg); color: var(--text); font-size: .9rem; font-family: inherit; transition: border-color .18s, box-shadow .18s; -webkit-appearance: none; }
#slug-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px var(--ring); }
@keyframes fade-slide { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }
.hint-line { margin: 12px 0 0; font-size: .8rem; color: var(--muted); display: flex; gap: 6px; align-items: flex-start; line-height: 1.55; }

/* ---------- 结果框 ---------- */
.result-box { display: flex; align-items: stretch; gap: 10px; background: var(--primary-soft); border: 1px solid rgba(26, 93, 224, .18); border-radius: 12px; padding: 12px 14px; }
.result-url { flex: 1; min-width: 0; display: flex; align-items: center; color: var(--link); font-weight: 700; font-size: .95rem; font-family: var(--mono); text-decoration: none; word-break: break-all; }
.result-url:hover { text-decoration: underline; }
.copy-btn { flex: none; height: 40px; padding: 0 15px; border: 0; border-radius: 10px; background: var(--primary); color: #fff; font-size: .85rem; font-weight: 700; font-family: inherit; display: inline-flex; align-items: center; justify-content: center; gap: 6px; cursor: pointer; transition: background-color .16s, transform .12s; -webkit-tap-highlight-color: transparent; }
.copy-btn svg { width: 15px; height: 15px; }
.copy-btn:hover { background: var(--primary-deep); }
.copy-btn:active { transform: scale(.96); }
.copy-btn.copied { background: var(--teal); }

/* ---------- 消息（默认隐藏，出错/成功时由 JS 设置 display） ---------- */
.message { display: none; margin-top: 14px; padding: 12px 14px; border-radius: 12px; border: 1px solid transparent; font-size: .88rem; line-height: 1.55; }
.message.error { color: var(--error); background: var(--error-bg); border-color: var(--error-border); }
.message.success { color: var(--success); background: var(--success-bg); border-color: rgba(38, 196, 160, .35); }

/* ---------- 统计卡片 ---------- */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.stat-card { background: var(--surface-2); border: 1px solid var(--border); border-radius: 14px; padding: 16px; }
.stat-head { display: flex; align-items: center; gap: 8px; color: var(--muted); font-size: .78rem; font-weight: 600; white-space: nowrap; }
.stat-icon { width: 30px; height: 30px; border-radius: 9px; display: inline-flex; align-items: center; justify-content: center; color: var(--primary); background: var(--primary-soft); flex: none; }
.stat-icon svg { width: 16px; height: 16px; }
.stat-value { display: block; margin-top: 12px; font-size: 1.65rem; font-weight: 800; letter-spacing: -.01em; line-height: 1; font-variant-numeric: tabular-nums; }
/* 文本型统计值（如「最近创建」的相对日期）：缩小字号，避免日期按大数字渲染 */
.stat-value.stat-value-text { font-size: 1.2rem; line-height: 1.3; margin-top: 15px; letter-spacing: 0; }
.stat-note { margin-top: 14px; font-size: .8rem; color: var(--muted); display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.stat-note .btn-ghost { height: 34px; padding: 0 12px; font-size: .8rem; border-radius: 10px; }

/* ---------- 表格 ---------- */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 12px; }
.table-wrap table { width: 100%; border-collapse: collapse; font-size: .88rem; min-width: 620px; }
table th, table td { padding: 12px 7px; text-align: left; border-bottom: 1px solid var(--border); color: var(--text); }
table th:first-child, table td:first-child { padding-left: 12px; }
table th { background: var(--surface-2); color: var(--muted); font-weight: 700; font-size: .8rem; white-space: nowrap; }
table tbody tr:last-child td { border-bottom: 0; }
table tbody tr:hover td { background: var(--surface-2); }
table td a { color: var(--primary); text-decoration: none; font-weight: 600; }
table td a:hover { text-decoration: underline; }
.slug-link { font-family: var(--mono); }
/* 短链列：单行布局，长链省略号截断（悬停见完整 URL），复制按钮不换行 */
.slug-cell { white-space: normal; }
.slug-cell .slug-link { display: inline-block; max-width: 100%; overflow: hidden; white-space: normal; word-break: break-all; vertical-align: middle; }
.td-nowrap { white-space: nowrap; }
td.td-actions { white-space: nowrap; }
.td-orig a { display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2; overflow: hidden; overflow-wrap: anywhere; max-width: 240px; text-align: left; }
/* 原始链接随窗口宽度折叠展示：宽屏显示更多信息 */
@media (min-width: 1440px) { .td-orig a { max-width: 480px; } .cell-note { max-width: 420px; } }
@media (min-width: 1800px) { .td-orig a { max-width: 640px; } .cell-note { max-width: 560px; } }
.delete-btn { height: 34px; padding: 0 10px; border: 1px solid var(--error-border); border-radius: 9px; background: transparent; color: var(--error); font-size: .78rem; font-weight: 700; font-family: inherit; cursor: pointer; white-space: nowrap; transition: background-color .16s, border-color .16s, transform .12s; -webkit-tap-highlight-color: transparent; }
.delete-btn:hover { background: var(--error-bg); border-color: var(--error); }
.delete-btn svg { width: 14px; height: 14px; display: block; }
.delete-btn:active { transform: scale(.96); }
/* 操作列：删除是破坏性动作，与前面的图标按钮拉开间距 */
.td-actions .delete-btn { margin-left: 10px; }
.badge { display: inline-flex; align-items: center; height: 24px; padding: 0 10px; border-radius: 999px; background: var(--primary-soft); color: var(--nav-active-text); font-size: .76rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.empty { text-align: center; color: var(--muted); padding: 26px 0; }
/* 紧凑空态：卡片内小列表（如 Token 列表）用，保持 .empty 语义但减小占位 */
.empty.empty-compact { padding: 10px 0; font-size: .8rem; }
/* 长列表分页：一次渲染前 N 条，「加载更多」追加 */
.load-more { display: flex; justify-content: center; margin-top: 12px; }

/* ---------- 图表 ---------- */
.chart-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 14px; }
.chart-card { background: var(--surface-2); border: 1px solid var(--border); border-radius: 14px; padding: 16px; }
.chart-card h3 { margin: 0 0 14px; font-size: .85rem; color: var(--muted); font-weight: 700; }
.bar-chart { display: flex; align-items: flex-end; gap: 8px; }
.bar-col { flex: 1; min-width: 0; height: 150px; display: flex; flex-direction: column; justify-content: flex-end; gap: 8px; padding-top: 20px; }
.bar-track { position: relative; width: 70%; max-width: 34px; margin: 0 auto; height: 100%; background: var(--primary-soft); border-radius: 7px 7px 3px 3px; }
.bar-val { position: absolute; top: -20px; left: 0; right: 0; text-align: center; font-size: .72rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.bar-fill { position: absolute; bottom: 0; left: 0; width: 100%; background: linear-gradient(180deg, var(--primary-2), var(--primary)); border-radius: 7px 7px 3px 3px; }
.bar-fill.today { background: var(--teal); }
.bar-label { text-align: center; font-size: .72rem; color: var(--muted); font-weight: 600; font-variant-numeric: tabular-nums; }
.top-links { display: flex; flex-direction: column; gap: 12px; padding-top: 2px; }
.top-link-head { display: flex; justify-content: space-between; gap: 10px; font-size: .82rem; margin-bottom: 6px; }
.top-link-slug { font-family: var(--mono); color: var(--text); font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
a.top-link-slug { text-decoration: none; }
a.top-link-slug:hover { color: var(--primary); }
.top-link-count { color: var(--muted); font-variant-numeric: tabular-nums; font-weight: 600; }
.progress { height: 8px; border-radius: 999px; background: var(--primary-soft); overflow: hidden; }
.progress i { display: block; height: 100%; border-radius: 999px; background: linear-gradient(90deg, var(--primary), var(--teal)); }

/* ---------- 登录页 ---------- */
.auth-wrap { position: relative; z-index: 1; min-height: 100vh; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 84px 20px 32px; }
.auth-top { position: fixed; top: calc(16px + env(safe-area-inset-top, 0px)); right: calc(16px + env(safe-area-inset-right, 0px)); z-index: 2; display: flex; gap: 8px; align-items: center; }
.auth-card { width: 100%; max-width: 420px; background: var(--surface); border: 1px solid var(--border); border-radius: 20px; padding: 34px 30px 28px; box-shadow: var(--shadow); text-align: center; }
.auth-logo { width: 58px; height: 58px; border-radius: 15px; margin: 0 auto 16px; box-shadow: 0 12px 26px -10px rgba(26, 93, 224, .6); }
.auth-card h1 { margin: 0; font-size: 1.45rem; letter-spacing: .01em; }
.auth-sub { margin: 8px 0 0; color: var(--muted); font-size: .88rem; }
.auth-divider { width: 44px; height: 3px; margin: 18px auto; border-radius: 3px; background: linear-gradient(90deg, var(--primary), var(--teal)); }
.auth-label { margin: 0 0 14px; font-size: .85rem; color: var(--muted); text-align: left; font-weight: 600; }
.auth-form { display: flex; flex-direction: column; gap: 12px; }
.auth-form input { min-height: 48px; padding: 12px 16px; border-radius: 12px; border: 1px solid var(--border-strong); background: var(--input-bg); color: var(--text); font-size: .95rem; font-family: inherit; transition: border-color .18s, box-shadow .18s; -webkit-appearance: none; }
.auth-form input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px var(--ring); }
.auth-error { display: none; margin-top: 12px; padding: 10px 14px; border-radius: 11px; font-size: .85rem; color: var(--error); background: var(--error-bg); border: 1px solid var(--error-border); }
/* 服务端渲染的密码页错误：带 .on 类直接显示（登录页 JS 走 style.display，两态并存） */
.auth-error.on { display: block; }

/* ---------- 页脚 / Toast ---------- */
.app-footer { display: flex; justify-content: center; gap: 4px 8px; flex-wrap: nowrap; text-align: center; font-size: .78rem; color: var(--faint); }
.app-footer .foot-links { white-space: nowrap; }
/* 应用页页脚吸底；登录页页脚跟在卡片下方（不参与吸底，保证卡片居中） */
.app > .app-footer { margin-top: auto; padding-top: 12px; }
.auth-wrap .app-footer { margin-top: 14px; }
.app-footer a { color: var(--muted); text-decoration: none; transition: color .16s; }
.app-footer a:hover { color: var(--text); }
/* 窄屏页脚自动换两行：版权一行，反馈链接一行 */
@media (max-width: 620px) {
  .app-footer { flex-wrap: wrap; }
  .app-footer > span:first-child { flex-basis: 100%; }
}
/* 顶部胶囊提示：fixed 相对视口（非页面文档），滚动时始终停在窗口顶部中央。
   居中用 inset-inline + margin auto + max-content，不经 transform——
   transform 定位在部分移动端浏览器会把 fixed 降级为随页面滚动 */
.toast { position: fixed; left: 0; right: 0; margin-inline: auto; width: max-content; top: calc(24px + env(safe-area-inset-top, 0px)); transform: translateY(-12px) scale(.98); opacity: 0; pointer-events: none; z-index: 50; background: var(--text); color: var(--surface); padding: 11px 18px; border-radius: 999px; font-size: .85rem; font-weight: 600; box-shadow: 0 12px 30px -10px rgba(0, 0, 0, .35); transition: opacity .2s, transform .2s; max-width: calc(100vw - 40px); text-align: center; }
.toast.show { opacity: 1; transform: translateY(0) scale(1); }
/* 错误类提示：红色底区分于中性提示 */
.toast.error { background: var(--error); color: #fff; }
/* 可关闭提醒（登录成功等）：3 秒自动消失，点 × 或气泡立即关闭 */
.toast-closable { display: inline-flex; align-items: center; gap: 10px; pointer-events: auto; }
.toast-text { min-width: 0; }
.toast-close { flex: none; width: 20px; height: 20px; border: 0; border-radius: 50%; background: transparent; color: inherit; font-size: 15px; line-height: 1; display: inline-flex; align-items: center; justify-content: center; cursor: pointer; padding: 0; opacity: .6; font-family: inherit; }
.toast-close:hover { opacity: 1; }

/* ---------- 列表工具栏（搜索 / 刷新） ---------- */
.table-toolbar { display: flex; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; align-items: center; }
.search-wrap { position: relative; flex: 1; min-width: 200px; }
.search-wrap > svg { position: absolute; left: 13px; top: 50%; transform: translateY(-50%); width: 15px; height: 15px; color: var(--faint); pointer-events: none; }
.search-wrap input { width: 100%; min-height: 42px; padding: 10px 14px 10px 37px; border-radius: 11px; border: 1px solid var(--border-strong); background: var(--input-bg); color: var(--text); font-size: .9rem; font-family: inherit; transition: border-color .18s, box-shadow .18s; -webkit-appearance: none; }
.search-wrap input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px var(--ring); }
.search-wrap input::placeholder { color: var(--faint); }
.tb-btn { height: 42px; padding: 0 14px; font-size: .85rem; }
.tb-btn svg { width: 15px; height: 15px; }
.tb-btn.spinning svg { animation: spin .8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@media (prefers-reduced-motion: reduce) { .tb-btn.spinning svg { animation: none; } }
/* 工具栏状态筛选下拉：与搜索框 / 按钮同高同风格 */
.tb-select { height: 42px; padding: 0 10px; border-radius: 11px; border: 1px solid var(--border-strong); background: var(--input-bg); color: var(--text); font-size: .85rem; font-weight: 600; font-family: inherit; cursor: pointer; -webkit-appearance: none; appearance: none; transition: border-color .18s, box-shadow .18s; }
.tb-select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px var(--ring); }
/* 回收站专属按钮（恢复全部 / 清空回收站）：危险色弱化呈现 */
.tb-btn.trash-only { color: var(--error); border-color: var(--error-border); }
.tb-btn.trash-only:hover { background: var(--error-bg); border-color: var(--error); }

/* 移动端「更多」收纳菜单：桌面隐藏（按钮平铺），≤620px 显示为工具栏内的下拉弹层 */
.more-wrap { display: none; }
.more-menu { position: absolute; right: 0; top: calc(100% + 6px); z-index: 45; min-width: 172px; padding: 6px; display: flex; flex-direction: column; gap: 2px; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; box-shadow: var(--shadow-sm); }
.more-menu button { display: flex; align-items: center; gap: 9px; height: 38px; padding: 0 12px; border: 0; border-radius: 8px; background: transparent; color: var(--text); font-size: .85rem; font-weight: 600; font-family: inherit; text-align: left; cursor: pointer; -webkit-tap-highlight-color: transparent; }
.more-menu button svg { width: 15px; height: 15px; flex: none; color: var(--muted); }
.more-menu button:hover, .more-menu button:active { background: var(--surface-2); }
.more-menu button.danger { color: var(--error); }
.more-menu button.danger svg { color: var(--error); }
/* 小窗口/移动端：低频按钮（tb-flat）隐藏、由更多菜单承载；搜索整行，筛选+回收站+⋯ 一行放完 */
@media (max-width: 620px) {
  .more-wrap { display: block; position: relative; flex: none; }
  .more-btn { width: 42px; padding: 0; justify-content: center; }
  .more-btn svg { width: 18px; height: 18px; }
}
/* >620px 桌面窄窗口：JS 测得平铺按钮放不下（toolbar 换行）时加 .overflowing，
   显示「更多」按钮，把收进菜单的按钮藏到弹层里，保证工具栏始终单行 */
.table-toolbar.overflowing .more-wrap { display: block; position: relative; flex: none; }
.table-toolbar.overflowing .more-btn { width: 42px; padding: 0; justify-content: center; }
.table-toolbar.overflowing .more-btn svg { width: 18px; height: 18px; }

/* 可排序表头（访问次数 / 创建时间）：鼠标点击 + 键盘 Tab/回车 */
th.th-sort { cursor: pointer; user-select: none; -webkit-user-select: none; }
th.th-sort:hover { color: var(--text); }
th.th-sort:focus-visible { outline: 2px solid var(--primary); outline-offset: -2px; border-radius: 6px; }
th.th-sort .arrow { display: inline-block; margin-left: 3px; color: var(--primary); }

/* 行内复制按钮（表格短链列） */
.row-copy { width: 30px; height: 30px; margin-left: 8px; padding: 0; vertical-align: middle; display: inline-flex; align-items: center; justify-content: center; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); color: var(--muted); cursor: pointer; transition: color .16s, border-color .16s, background-color .16s; -webkit-tap-highlight-color: transparent; }
.row-copy:hover { color: var(--primary); border-color: var(--primary); background: var(--primary-soft); }
.row-copy.copied { color: var(--success); border-color: var(--success); }
.row-copy svg { width: 14px; height: 14px; }

/* ---------- 骨架屏 ---------- */
.skel { height: 14px; border-radius: 7px; background: linear-gradient(90deg, var(--surface-2) 25%, var(--surface-3) 45%, var(--surface-2) 65%); background-size: 200% 100%; animation: skel 1.2s ease infinite; }
td .skel { width: 82%; }
@keyframes skel { from { background-position: 200% 0; } to { background-position: -200% 0; } }
@media (prefers-reduced-motion: reduce) { .skel { animation: none; } }

/* ---------- 确认弹窗（删除等破坏性操作） ---------- */
dialog { width: min(520px, calc(100% - 32px)); border: 1px solid var(--border); border-radius: 16px; padding: 24px; background: var(--surface); color: var(--text); box-shadow: var(--shadow); }
dialog[open] { animation: dialog-pop .22s cubic-bezier(0.16, 1, 0.3, 1) forwards; }
dialog h2 { margin: 0 0 12px; font-size: 1.1rem; display: flex; align-items: center; gap: 8px; }
/* 弹窗标题图标默认主色；危险弹窗（删除确认 / 格式警告）加 .danger-title 转红 */
dialog h2 svg { width: 18px; height: 18px; color: var(--primary); }
.danger-title svg { color: var(--error); }
dialog::backdrop { background: var(--scrim); animation: backdrop-fade .2s ease forwards; }
@keyframes dialog-pop { from { opacity: 0; transform: scale(.96) translateY(8px); } to { opacity: 1; transform: scale(1) translateY(0); } }
@keyframes backdrop-fade { from { opacity: 0; } to { opacity: 1; } }
@media (prefers-reduced-motion: reduce) { dialog[open] { animation: none; } dialog::backdrop { animation: none; } }
/* 列表项删除 / 恢复退出动效 */
tr.row-exit { opacity: 0 !important; transform: translateX(18px); transition: opacity .2s ease, transform .2s ease; }
.dialog-text { margin: 0 0 18px; font-size: .9rem; color: var(--muted); line-height: 1.6; word-break: break-all; }
.dialog-text b { color: var(--text); font-family: var(--mono); }
.row-btns { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
/* 单按钮弹窗底部：占满整行（替代内联 grid-template-columns） */
.row-btns.single { grid-template-columns: 1fr; }
/* 详情弹窗底部三键（复制短链 / 二维码 / 关闭） */
.row-btns.detail-actions { margin-top: 16px; grid-template-columns: repeat(3, 1fr); }
.btn-danger { height: 44px; border: 0; border-radius: 12px; background: var(--error); color: #fff; font-weight: 700; font-size: .9rem; font-family: inherit; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; transition: filter .16s, transform .12s; -webkit-tap-highlight-color: transparent; }
.btn-danger:hover { filter: brightness(1.08); }
.btn-danger:active { transform: scale(.98); }

/* 访问详情弹窗：宽版横向布局（移动端自动收窄为单列） */
#detail-dialog { width: min(760px, calc(100% - 32px)); }
#detail-body { display: flex; flex-direction: column; gap: 14px; }
.detail-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.detail-grid .span-2 { grid-column: 1 / -1; }
.detail-grid .bar-chart { gap: 3px; }
.detail-grid .bar-label { font-size: .64rem; }
@media (max-width: 620px) { .detail-grid { grid-template-columns: 1fr; } .opt-pair { grid-template-columns: 1fr; } }

/* 二维码弹窗 */
.qr-view { display: flex; justify-content: center; padding: 4px 0 16px; }
.qr-view canvas { width: 240px; height: 240px; image-rendering: pixelated; border-radius: 8px; background: #fff; }

/* ---------- 「关于项目」弹窗 ---------- */
.about-close { position: absolute; top: 12px; right: 12px; width: 30px; height: 30px; border: 0; border-radius: 9px; background: transparent; color: var(--muted); cursor: pointer; display: inline-flex; align-items: center; justify-content: center; padding: 0; transition: background-color .16s, color .16s; }
.about-close:hover { background: var(--surface-2); color: var(--text); }
.about-close svg { width: 16px; height: 16px; }
/* 弹窗右上角 X 关闭钮：qr-zoom 等无底部关闭键的弹窗共用（与 about-close 同款手感）。
   桌面 32px；移动端命中区扩大到 44px（点按舒适），并适当加大图标 */
.dialog-x { position: absolute; top: 12px; right: 12px; width: 32px; height: 32px; border: 0; border-radius: 9px; background: transparent; color: var(--muted); cursor: pointer; display: inline-flex; align-items: center; justify-content: center; padding: 0; transition: background-color .16s, color .16s; }
.dialog-x:hover { background: var(--surface-2); color: var(--text); }
.dialog-x svg { width: 16px; height: 16px; }
@media (pointer: coarse), (max-width: 620px) {
  .dialog-x { width: 44px; height: 44px; top: 6px; right: 6px; border-radius: 12px; }
  .dialog-x svg { width: 20px; height: 20px; }
}
.about-card { text-align: center; }
.about-card h2 { margin: 0; justify-content: center; font-size: 1.2rem; }
.about-logo { width: 54px; height: 54px; border-radius: 13px; margin: 0 auto 12px; box-shadow: 0 12px 26px -10px rgba(26, 93, 224, .6); }
.about-sub { margin: 6px 0 0; font-size: .85rem; color: var(--muted); }
.version-badge { display: inline-flex; align-items: center; height: 24px; padding: 0 12px; margin-top: 10px; border-radius: 999px; background: var(--primary-soft); color: var(--nav-active-text); font-size: .78rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.about-desc { margin: 14px 0; font-size: .84rem; color: var(--muted); line-height: 1.7; }
.about-info { display: flex; flex-direction: column; gap: 9px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 12px; padding: 13px 15px; margin-bottom: 16px; text-align: left; }
.about-info-row { display: flex; justify-content: space-between; gap: 12px; font-size: .82rem; line-height: 1.5; }
.about-info-row .k { color: var(--muted); flex: none; }
.about-info-row .v { color: var(--text); font-weight: 600; text-align: right; word-break: break-all; }

/* 登录页「关于项目」入口 */
.auth-about { display: inline-flex; align-items: center; gap: 5px; margin-top: 18px; border: 0; background: none; padding: 6px 10px; border-radius: 9px; color: var(--faint); font-size: .78rem; font-weight: 600; font-family: inherit; cursor: pointer; -webkit-tap-highlight-color: transparent; }
.auth-about:hover { color: var(--primary); background: var(--primary-soft); }
.auth-about svg { width: 14px; height: 14px; flex: none; }
.auth-about span { white-space: nowrap; }

/* ---------- 登录页口令可见性切换 ---------- */
.pw-wrap { position: relative; }
.pw-wrap input { width: 100%; padding-right: 48px; }
.eye-btn { position: absolute; right: 2px; top: 50%; transform: translateY(-50%); width: 44px; height: 44px; border: 0; border-radius: 10px; background: transparent; color: var(--muted); cursor: pointer; display: inline-flex; align-items: center; justify-content: center; padding: 0; -webkit-tap-highlight-color: transparent; }
.eye-btn:hover { background: var(--surface-3); color: var(--text); }
.eye-btn svg { width: 18px; height: 18px; }

/* ---------- 生成结果 + 二维码 ---------- */
/* 结果卡与创建卡同宽：同在 .content 流内自然等宽，不做限宽居中 */
.result-flex { display: flex; gap: 14px; align-items: stretch; }
.result-flex .result-box { flex: 1; min-width: 0; flex-direction: column; align-items: stretch; gap: 12px; justify-content: center; padding: 16px 18px; }
.result-meta { display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.result-label { font-size: .72rem; font-weight: 700; letter-spacing: .04em; color: var(--faint); }
.result-flex .copy-btn { align-self: flex-end; }
.result-qr { flex: none; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 7px; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 12px; margin: 0; box-shadow: var(--shadow-sm); }
.result-qr canvas { display: block; width: 124px; height: 124px; border-radius: 8px; image-rendering: pixelated; }
.qr-cap { font-size: .72rem; color: var(--muted); font-weight: 600; white-space: nowrap; }
.qr-dl-btn { height: 30px; padding: 0 10px; font-size: .76rem; border-radius: 9px; }
.qr-dl-btn svg { width: 13px; height: 13px; }

/* 批量结果行：行内二维码缩略图 + 短链 + 复制，卡片式行块（区别于旧版裸分隔线） */
.batch-result-row { display: flex; align-items: center; gap: 14px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 12px; padding: 10px 14px; }
.batch-result-row + .batch-result-row { margin-top: 10px; }
.batch-result-row.batch-err-row { background: var(--error-bg); border-color: var(--error-border); }
.batch-result-row.batch-all-row { background: transparent; border: 0; padding-top: 4px; justify-content: flex-end; }
.batch-qr { flex: none; width: 56px; height: 56px; padding: 4px; border: 1px solid var(--border-strong); border-radius: 10px; background: #fff; cursor: zoom-in; transition: border-color .16s, transform .12s; }
.batch-qr:hover { border-color: var(--primary); }
.batch-qr:active { transform: scale(.95); }
.batch-qr canvas { display: block; width: 100%; height: 100%; border-radius: 6px; image-rendering: pixelated; }
.batch-result-main { flex: 1; min-width: 0; display: flex; align-items: center; gap: 10px; }
.batch-result-main .result-url { flex: 1; }
.batch-result-main .copy-btn { height: 36px; padding: 0 13px; font-size: .8rem; }
.batch-err { color: var(--error); font-size: .82rem; line-height: 1.5; word-break: break-all; }

/* 长链重复提醒弹窗：冲突项列表（URL + 原因），红色调警示 */
.conflict-list { display: flex; flex-direction: column; gap: 8px; max-height: 40vh; overflow-y: auto; margin-bottom: 18px; }
.conflict-item { background: var(--error-bg); border: 1px solid var(--error-border); border-radius: 10px; padding: 10px 12px; display: flex; flex-direction: column; gap: 3px; }
.conflict-url { font-family: var(--mono); font-size: .84rem; color: var(--text); word-break: break-all; font-weight: 600; }
.conflict-reason { font-size: .76rem; color: var(--error); line-height: 1.5; }

/* 自定义短链实时反馈 */
#slug-input.invalid { border-color: var(--error); box-shadow: 0 0 0 4px var(--error-bg); }
.slug-count { font-size: .76rem; color: var(--faint); font-variant-numeric: tabular-nums; }

/* ---------- 创建表单扩展（单条/批量模式切换 + 更多选项） ---------- */
/* 卡片标题行右侧的模式切换（segmented control）：单条/批量互斥，
   滑块高亮当前模式，替代原先两个独立折叠开关（主动线不再被批量入口打断） */
.mode-switch { position: relative; display: inline-flex; flex: none; padding: 3px; gap: 2px; border: 1px solid var(--border-strong); border-radius: 11px; background: var(--surface-2); }
.mode-btn { position: relative; z-index: 1; display: inline-flex; align-items: center; justify-content: center; gap: 6px; min-width: 64px; height: 32px; padding: 0 14px; border: 0; border-radius: 8px; background: transparent; color: var(--muted); font-size: .82rem; font-weight: 700; font-family: inherit; cursor: pointer; transition: color .18s; -webkit-tap-highlight-color: transparent; }
.mode-btn svg { width: 14px; height: 14px; }
.mode-btn:hover { color: var(--text); }
.mode-btn[aria-selected="true"] { color: var(--nav-active-text); }
.mode-btn:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; border-radius: 8px; }
/* 滑块：真实元素（.mode-thumb）而非伪元素 —— 伪元素方案在此环境实测 transform 不生效；
   JS 按目标按钮的 offsetLeft/offsetWidth 设置像素位移动画，两按钮不等宽也能精确对齐。
   不加 transition：部分内嵌浏览器对 transform 过渡的合成动画不推进，滑块会卡在旧位置 */
.mode-switch .mode-thumb { position: absolute; z-index: 0; top: 3px; bottom: 3px; left: 0; width: 64px; border-radius: 8px; background: var(--surface); border: 1px solid var(--border); box-shadow: 0 1px 4px rgba(30, 70, 180, .14); }
/* 模式面板：同一时间只显示一个 */
.mode-pane[hidden] { display: none; }
.mode-pane { animation: fade-slide .22s ease; }
/* 「更多选项」共享位：位于两个模式面板下方（面板外），对两种模式都生效 */
.opts-shared { margin-top: 14px; }
.opts-shared + .opts-panel { margin-top: 0; }
.form-toggles { display: flex; gap: 4px 16px; flex-wrap: wrap; align-items: center; margin-top: 12px; }
.opts-panel { margin-top: 10px; background: var(--surface-2); border: 1px solid var(--border); border-radius: 12px; padding: 14px; display: flex; flex-direction: column; gap: 12px; animation: fade-slide .22s ease; }
.opts-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px 16px; }
.opts-grid label { display: flex; flex-direction: column; gap: 6px; font-size: .8rem; font-weight: 600; color: var(--muted); }
.opts-grid input, .opts-grid select { height: 40px; padding: 0 12px; border-radius: 10px; border: 1px solid var(--border-strong); background: var(--input-bg); color: var(--text); font-size: .9rem; font-family: inherit; transition: border-color .18s, box-shadow .18s; -webkit-appearance: none; }
.opts-grid input:focus, .opts-grid select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px var(--ring); }
#batch-import { width: 100%; resize: vertical; min-height: 72px; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--border-strong); background: var(--input-bg); color: var(--text); font-size: .88rem; font-family: var(--mono); line-height: 1.6; transition: border-color .18s, box-shadow .18s; }
#batch-import:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px var(--ring); }
.batch-import-wrap { display: flex; flex-direction: column; gap: 8px; }
.batch-import-ops { display: flex; gap: 8px; flex-wrap: wrap; }
/* 批量面板内边距：批量模式无 url-row 在上，面板与工具行保持呼吸感 */
#pane-batch { display: flex; flex-direction: column; gap: 12px; }
.batch-submit { align-self: stretch; width: 100%; }
/* 批量逐行编辑器：≥820px 一行排开（序号 + 三个输入框 + 删除）；
   窄屏切换为固定两档网格（序号左栏贯穿，右侧三行），任何宽度都不会错位 */
.batch-rows { display: flex; flex-direction: column; gap: 8px; }
.batch-row-edit { display: grid; grid-template-columns: min-content minmax(260px, 2.2fr) minmax(170px, 1.3fr) minmax(150px, 1fr) 38px; gap: 8px; align-items: center; border: 1px solid var(--border); border-radius: 10px; background: var(--input-bg); padding: 10px; }
.batch-row-edit.invalid { border-color: var(--error); box-shadow: 0 0 0 3px var(--error-bg); }
/* 序号徽章：小圆底，随行数自动编号；网格对齐见下方媒体查询 */
.bre-idx { width: 22px; height: 22px; display: inline-flex; align-items: center; justify-content: center; border-radius: 50%; background: var(--surface-3); font-size: .72rem; font-weight: 700; color: var(--muted); font-variant-numeric: tabular-nums; }
.batch-row-edit input { min-width: 0; min-height: 38px; padding: 9px 10px; border-radius: 9px; border: 1px solid var(--border-strong); background: var(--surface); color: var(--text); font-size: .9rem; font-family: inherit; transition: border-color .18s, box-shadow .18s; }
.batch-row-edit input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px var(--ring); }
/* 删除钮：红色实心（用户偏好保留原样式） */
.bre-del { width: 38px; min-height: 38px; border: 0; border-radius: 9px; background: var(--error); color: #fff; cursor: pointer; display: inline-flex; align-items: center; justify-content: center; padding: 0; transition: filter .16s, transform .12s; }
.bre-del:hover { filter: brightness(1.08); }
.bre-del:active { transform: scale(.94); }
.bre-del svg { width: 14px; height: 14px; }
@media (max-width: 820px) {
  /* 窄屏三行布局：第一行 序号徽章+删除钮（头条行，两钮等尺寸 28px，右对齐），
     第二行 目标链接满宽，第三行 短链+备注 —— 数字与关闭钮不再挤在链接框两侧 */
  .batch-row-edit { grid-template-columns: 1fr 1fr; grid-template-areas: "idx del" "url url" "slug note"; row-gap: 8px; }
  .bre-idx { grid-area: idx; justify-self: start; }
  .bre-del { grid-area: del; justify-self: end; }
  .br-url { grid-area: url; }
  .br-slug { grid-area: slug; }
  .br-note { grid-area: note; }
  /* 头条行两钮统一尺寸：序号徽章加大到与删除钮同高（28px 圆形），视觉平衡 */
  .batch-row-edit .bre-idx { width: 28px; height: 28px; font-size: .78rem; }
  .batch-row-edit .bre-del { width: 28px; min-height: 28px; }
  .batch-row-edit .bre-del svg { width: 12px; height: 12px; }
}
.batch-ops { display: flex; gap: 8px; flex-wrap: wrap; }
.batch-op { height: 36px; padding: 0 12px; font-size: .8rem; }
.cell-note { max-width: 240px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: .72rem; color: var(--faint); margin-top: 2px; }
.cell-badge { display: inline-flex; margin-left: 6px; height: 18px; padding: 0 7px; align-items: center; border-radius: 999px; font-size: .68rem; font-weight: 700; background: var(--surface-3); color: var(--muted); vertical-align: middle; }
.cell-badge.warn { background: var(--error-bg); color: var(--error); }
.row-edit { height: 34px; padding: 0 8px; margin-right: 4px; border: 1px solid var(--border); border-radius: 9px; background: var(--surface); color: var(--muted); font-size: .78rem; font-weight: 700; font-family: inherit; cursor: pointer; white-space: nowrap; transition: color .16s, border-color .16s; -webkit-tap-highlight-color: transparent; }
.row-edit svg { width: 14px; height: 14px; display: block; }
.row-edit:hover { color: var(--primary); border-color: var(--primary); }
.row-restore { color: var(--success); border-color: var(--success); }
.row-restore:hover { color: var(--success); border-color: var(--success); background: var(--success-bg); }
.trash-toggle.on { color: var(--nav-active-text); border-color: var(--primary); background: var(--nav-active-bg); }
/* 激活态（返回列表）下徽标底色与按钮底色相同会隐形：改白底保持胶囊观感 */
.trash-toggle.on .badge { background: var(--surface); color: var(--primary); }

/* 多选列与批量操作条 */
.col-check { width: 36px; text-align: center; white-space: nowrap; }
.col-check input[type="checkbox"] { width: 15px; height: 15px; margin: 0; accent-color: var(--primary); cursor: pointer; vertical-align: middle; }
.batch-bar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 12px; padding: 8px 12px; border: 1px solid var(--primary); border-radius: 12px; background: var(--primary-soft); }
.batch-count { font-size: .85rem; font-weight: 700; color: var(--text); margin-right: auto; }
.batch-bar .tb-btn { height: 36px; padding: 0 12px; font-size: .8rem; }

/* ---------- 系统设置 ---------- */
/* 设置网格：默认 2×2（四张普通卡两行摆齐），≥1400px 宽屏一行四卡，≤620px 手机单列。
   不用 auto-fit：三列的中间态会把第四张卡挤成 3+1 参差布局 */
.settings-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
@media (min-width: 1400px) { .settings-grid { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (max-width: 620px) { .settings-grid { grid-template-columns: 1fr; } }
.settings-card { border: 1px solid var(--border); border-radius: 12px; background: var(--surface-2); padding: 14px 16px 16px; display: flex; flex-direction: column; gap: 12px; margin: 0; }
/* 分组标题：卡片内部首行，主色竖条 + 正文字色加粗（替代 fieldset legend 骑线渲染） */
.settings-group-title { display: flex; align-items: center; gap: 8px; margin: 0; font-size: .92rem; font-weight: 700; color: var(--text); }
.settings-group-title::before { content: ''; flex: none; width: 4px; height: 14px; border-radius: 2px; background: var(--primary); }
/* 存储用量卡片：统计值网格 + 底部「上次统计时间 + 重新统计」 */
.usage-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px 10px; }
.usage-item { display: flex; flex-direction: column; gap: 2px; background: var(--surface); border: 1px solid var(--border); border-radius: 10px; padding: 9px 11px; }
/* 卡片内第 5 块瓦片独占一行，避免半宽孤块；窄屏单列卡片时行为一致 */
.usage-item:last-child { grid-column: 1 / -1; }
.usage-value { font-size: 1.25rem; font-weight: 800; color: var(--text); font-variant-numeric: tabular-nums; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.usage-label { font-size: .74rem; font-weight: 600; color: var(--faint); }
.usage-foot { display: flex; align-items: center; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.usage-foot .settings-hint { margin: 0; }
.settings-card label { display: flex; flex-direction: column; gap: 5px; font-size: .8rem; font-weight: 600; color: var(--muted); }
.settings-card label.chk { flex-direction: row; align-items: center; gap: 8px; }
.settings-card input[type="text"], .settings-card input[type="password"], .settings-card input[type="number"], .settings-card select, .settings-card textarea { width: 100%; min-width: 0; height: 38px; padding: 0 10px; border-radius: 9px; border: 1px solid var(--border-strong); background: var(--input-bg); color: var(--text); font-size: .88rem; font-family: inherit; transition: border-color .18s, box-shadow .18s; -webkit-appearance: none; }
.settings-card textarea { height: auto; padding: 8px 10px; resize: vertical; font-family: var(--mono); font-size: .8rem; line-height: 1.6; }
.settings-card input:focus, .settings-card select:focus, .settings-card textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px var(--ring); }
.settings-card input[type="color"] { padding: 0; height: 38px; width: 64px; border: 1px solid var(--border-strong); border-radius: 9px; background: var(--surface); cursor: pointer; -webkit-appearance: none; appearance: none; }
/* 色块自定义渲染：移动端浏览器原生色块外露白边且观感破碎，统一为圆角色片 */
.settings-card input[type="color"]::-webkit-color-swatch-wrapper { padding: 2px; }
.settings-card input[type="color"]::-webkit-color-swatch { border: none; border-radius: 7px; }
.settings-card input[type="color"]::-moz-color-swatch { border: none; border-radius: 7px; }
.settings-card input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--primary); }
.settings-hint { margin: 0; font-size: .76rem; color: var(--faint); line-height: 1.6; }
/* API Token 卡片内容横向较长，占满设置网格整行 */
.settings-card-wide { grid-column: 1 / -1; }
/* 设置页保存按钮：仅保留标题行右侧一个（底部保存条已移除） */
.settings-save-btn { height: 40px; padding: 0 18px; }
.opt-pair { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.qr-logo-row { display: flex; gap: 14px; align-items: center; }
.qr-logo-preview { width: 56px; height: 56px; border-radius: 12px; background: #fff; border: 1px solid var(--border); object-fit: contain; padding: 5px; box-sizing: border-box; flex: none; }
.qr-logo-ops { display: flex; flex-direction: column; gap: 8px; align-items: stretch; }
.qr-logo-ops .btn-ghost { height: 36px; padding: 0 14px; font-size: .8rem; justify-content: center; }
.qr-upload-btn { cursor: pointer; }
.qr-upload-btn input[type="file"] { display: none; }
.token-create { display: flex; gap: 8px; }
.token-create input { flex: 1; min-width: 0; }
/* Token 生成弹窗：明文展示条（仅显示一次，关闭即从 DOM 清除） */
.token-reveal { display: flex; align-items: center; gap: 10px; background: var(--success-bg); border: 1px solid rgba(38, 196, 160, .35); border-radius: 10px; padding: 10px 12px; margin-bottom: 14px; }
.token-reveal code { flex: 1; font-family: var(--mono); font-size: .78rem; word-break: break-all; color: var(--success); font-weight: 700; user-select: all; }
.token-warn b { color: var(--error); }
.token-list { display: flex; flex-direction: column; gap: 6px; }
.token-item { display: flex; align-items: center; gap: 10px; font-size: .82rem; padding: 8px 10px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); }
.token-item .t-name { font-weight: 700; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.token-item .t-time { color: var(--faint); font-size: .74rem; white-space: nowrap; }

/* 编辑短链弹窗（与设置卡同属后台紧凑表单档：38px 高 / 9px 圆角） */
.edit-form { display: flex; flex-direction: column; gap: 12px; margin-bottom: 16px; }
.edit-form label { display: flex; flex-direction: column; gap: 5px; font-size: .8rem; font-weight: 600; color: var(--muted); }
.edit-form label.chk { flex-direction: row; align-items: center; gap: 8px; }
.edit-form input, .edit-form select { width: 100%; min-width: 0; height: 38px; padding: 0 10px; border-radius: 9px; border: 1px solid var(--border-strong); background: var(--input-bg); color: var(--text); font-size: .88rem; font-family: inherit; transition: border-color .18s, box-shadow .18s; -webkit-appearance: none; }
.edit-form input:focus, .edit-form select:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 4px var(--ring); }
.edit-form input[type="checkbox"] { width: 16px; height: 16px; accent-color: var(--primary); }
/* 有效期快捷预设（7/30/90 天、永久） */
.exp-wrap { display: flex; flex-direction: column; gap: 8px; min-width: 0; }
.exp-presets { display: flex; flex-wrap: wrap; gap: 6px; }
.chip { height: 28px; padding: 0 11px; border-radius: 999px; border: 1px solid var(--border-strong); background: var(--surface); color: var(--muted); font-size: .74rem; font-weight: 600; font-family: inherit; cursor: pointer; transition: color .15s, border-color .15s, background-color .15s; -webkit-tap-highlight-color: transparent; }
.chip:hover { color: var(--primary); border-color: var(--primary); background: var(--primary-soft); }
.detail-section { margin-top: 14px; }

/* ---------- 下拉选择统一美化（tb-select / opts-grid / settings / edit-form 四档共用） ---------- */
/* 1) 原生弹层跟随主题：color-scheme 已在 :root / dark 声明，Chromium/Firefox 深色主题下拉面板自动深色；
   2) 自绘 chevron 箭头替代各浏览器原生箭头，颜色随主题（--select-arrow）；
   3) option 配色兜底（Firefox 生效）。高度仍按分档体系（42/40/38），视觉语言统一 */
.tb-select, .opts-grid select, .settings-card select, .edit-form select {
  background-image: var(--select-arrow);
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 12px 12px;
  padding-right: 30px;
}
select option { background: var(--surface); color: var(--text); }

/* 主题切换过渡：仅在切换瞬间由 JS 挂上 theme-anim 类，避免首屏闪烁与日常动画冲突 */
html.theme-anim * { transition: background-color .3s ease, color .3s ease, border-color .3s ease, box-shadow .3s ease; }

/* 卡片入场动画（reduced-motion 下禁用） */
@keyframes rise { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
.card { animation: rise .4s ease both; }
.content .card:nth-of-type(2) { animation-delay: .05s; }
.content .card:nth-of-type(3) { animation-delay: .1s; }
.auth-card { animation: rise .45s ease both; }
@media (prefers-reduced-motion: reduce) { .card, .auth-card { animation: none; } }

/* ---------- 响应式 ---------- */
@media (max-width: 860px) {
  /* 空间不够 / 移动端：侧边栏退场，菜单移到底部固定栏（图标上、文字下、常显） */
  .app-body { grid-template-columns: 1fr; }
  .sidebar { display: none; }
  .footer-nav { display: flex; position: fixed; left: 0; right: 0; bottom: 0; z-index: 40; align-items: stretch; background: var(--surface); border-top: 1px solid var(--border); padding: 6px 10px calc(6px + env(safe-area-inset-bottom, 0px)); box-shadow: 0 -10px 30px -18px rgba(30, 70, 180, .35); }
  .app.has-footer-nav { padding-bottom: calc(80px + env(safe-area-inset-bottom, 0px)); }
  .footer-nav .nav-item { flex: 1 1 0; min-width: 0; flex-direction: column; align-items: center; justify-content: center; gap: 3px; padding: 7px 4px; border-radius: 10px; text-align: center; font-size: .72rem; }
  .footer-nav .nav-item svg { width: 20px; height: 20px; }
  .footer-nav .nav-item.active::before { left: 0; top: 20%; bottom: 20%; width: 3px; height: auto; border-radius: 3px; }
  .chart-grid { grid-template-columns: 1fr; }
}
@media (max-width: 860px) {
  /* 小窗口/移动端单条结果：上下结构——短链框在上，二维码+复制按钮在下 */
  .result-flex { flex-direction: column; }
  .result-flex .result-qr { cursor: zoom-in; }
}
@media (max-width: 820px) {
  /* 小窗/移动端单条动线：目标链接 → 自定义短链 → 生成按钮（提交键在表单末尾更顺手）。
     三行全部满宽：目标链接与自定义短链布局同构（标签小标题 + 满宽输入框） */
  .pane-single-stack { display: flex; flex-direction: column; gap: 12px; }
  .pane-single-stack .url-row { display: contents; }
  .pane-single-stack .slug-row { margin-top: 0; display: contents; }
  .pane-single-stack #url-input { order: 1; width: 100%; }
  .pane-single-stack .slug-row .slug-label { order: 2; }
  .pane-single-stack #slug-input { order: 3; width: 100%; min-width: 0; flex: none; }
  .pane-single-stack #submit-btn { order: 4; width: 100%; height: 48px; }
  .pane-single-stack .url-row .slug-label { order: 0; }
  .pane-single-stack .slug-count { display: none; }
  .pane-single-stack .hint-line { order: 5; }
  /* 手机上模式切换移到标题下方独立一行，占满宽度方便点按 */
  .card-title-row { flex-wrap: wrap; }
  .mode-switch { width: 100%; }
  .mode-btn { flex: 1; }
  .url-row { flex-direction: column; }
  .url-row .btn-primary { width: 100%; }
  /* 小窗口/移动端单条结果：上下结构——短链框在上，二维码+复制按钮一行在下 */
  .result-flex .result-box { flex-direction: column; align-items: stretch; padding: 14px 16px; }
  .result-flex .copy-btn { align-self: stretch; }
  /* 小窗/移动端二维码放大提示与弹窗内 canvas 可长按保存（不阻断默认呼出菜单） */
  .result-flex .result-qr { margin: 0; align-self: stretch; flex-direction: row; justify-content: center; padding: 12px; }
  .result-flex .result-qr canvas { width: 140px; height: 140px; }
  /* 批量结果行窄屏：二维码缩略图 + 短链 + 纯图标复制钮一行排开（不换行、不占整行） */
  .batch-result-main { flex-wrap: nowrap; }
  .batch-result-main .result-url { flex: 1 1 auto; }
  .batch-result-main .copy-btn { width: 38px; height: 38px; padding: 0; justify-content: center; flex: none; }
  .batch-result-main .copy-btn span { display: none; }
  /* 移动端隐藏「原始链接」「创建时间」「访问次数」列（按列类名隐藏，列序调整时不会错位），
     换取「操作」列完整进入首屏；访问次数可在访问详情弹窗查看 */
  .col-orig { display: none; }
  .col-created { display: none; }
  .col-visits { display: none; }
  /* 多选列在窄屏收窄，保住操作列完整可见 */
  .col-check { width: 28px; }
  .table-wrap table { min-width: 320px; }
  /* 操作列在窄屏收紧内边距，确保 4 个动作完整可见 */
  .td-actions .row-edit { padding: 0 6px; }
  .td-actions .delete-btn { padding: 0 8px; margin-left: 6px; }
  /* 移动端工具栏单行化：搜索整行，下一行 筛选 + 回收站 + ⋯ 直达；
     低频操作（tb-flat：刷新/导出/恢复全部/清空）收进「更多」菜单，不再撑出多行大按钮 */
  .table-toolbar { flex-direction: row; }
  .search-wrap { flex: 1 1 100%; min-width: 0; }
  .tb-select { flex: 1 1 auto; min-width: 0; font-size: 16px; }
  .tb-btn { flex: 0 0 auto; justify-content: center; }
  .tb-flat { display: none; }
  .stat-value { font-size: 1.45rem; }
  /* 极窄屏幕：底部导航文字再缩一档并收窄内边距，四个菜单完整显示不溢出 */
  .footer-nav { padding-left: 4px; padding-right: 4px; }
  .footer-nav .nav-item { font-size: .66rem; padding: 6px 2px; }
  /* iOS 聚焦时禁止自动放大 */
  input, #url-input, #slug-input, .auth-form input { font-size: 16px; }
}