/* ==========================================================
   统一文件托管 · 全站样式
   设计体系：靛蓝→紫 品牌色，浅色 / 深色双主题（<html data-theme>）
   结构：令牌 → 基础 → 布局骨架 → 组件 → 业务模块 → 响应式
   ========================================================== */

/* ========================= 1. 令牌 ========================= */
:root {
    color-scheme: light;

    /* 品牌色阶 */
    --brand-50:  #eef2ff;
    --brand-100: #e0e7ff;
    --brand-500: #6366f1;
    --brand-600: #4f46e5;
    --brand-700: #4338ca;
    --violet-500:#8b5cf6;
    --violet-600:#7c3aed;
    --grad-brand: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    --grad-soft:  linear-gradient(135deg, rgba(79,70,229,.10), rgba(124,58,237,.10));

    /* 中性色 */
    --bg:          #f4f6fb;
    --bg-tint:     #eaedf6;
    --surface:     #ffffff;
    --surface-2:   #f8fafc;
    --surface-3:   #f1f5f9;
    --border:      #e4e8f0;
    --border-strong:#d2dae7;

    /* 文字 */
    --text:   #0f1729;
    --text-2: #3c4859;
    --muted:  #6a7788;

    /* 语义色 */
    --primary:      #4f46e5;
    --primary-hover:#4338ca;
    --primary-soft: #eef0fe;
    --violet-soft:  rgba(139,92,246,.12);
    --primary-ring: rgba(79,70,229,.20);
    --on-primary:   #ffffff;
    --success:      #15803d;
    --success-soft: #e8f6ed;
    --danger:       #dc2626;
    --danger-soft:  #fdeeee;
    --danger-border:#f6cccc;
    --warning:      #b45309;
    --warning-soft: #fdf3e2;
    --info:         #0369a1;
    --info-soft:    #e6f3fb;

    /* 圆角 */
    --radius-xs: 6px;
    --radius-sm: 8px;
    --radius:    12px;
    --radius-lg: 16px;
    --radius-xl: 22px;
    --radius-pill: 999px;

    /* 间距 */
    --sp-1: 4px;
    --sp-2: 8px;
    --sp-3: 12px;
    --sp-4: 16px;
    --sp-5: 22px;
    --sp-6: 28px;
    --sp-8: 40px;

    /* 阴影 */
    --shadow-xs: 0 1px 2px rgba(15,23,41,.05);
    --shadow-sm: 0 1px 2px rgba(15,23,41,.05), 0 1px 3px rgba(15,23,41,.04);
    --shadow:    0 6px 18px -6px rgba(15,23,41,.12), 0 1px 3px rgba(15,23,41,.05);
    --shadow-lg: 0 22px 48px -14px rgba(15,23,41,.22), 0 6px 14px -6px rgba(15,23,41,.10);
    --ring: 0 0 0 3px var(--primary-ring);

    /* 排版 */
    --font: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC",
            "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    --mono: ui-monospace, SFMono-Regular, "JetBrains Mono", Menlo, Consolas, monospace;
    --fs-xs: 12px;
    --fs-sm: 13px;
    --fs-md: 14px;
    --fs-lg: 15px;
    --fs-xl: 17px;
    --fs-2xl: 22px;

    /* 布局 */
    --side-w: 236px;
    --top-h: 62px;
    --header-blur: saturate(180%) blur(10px);
}

[data-theme="dark"] {
    color-scheme: dark;

    --grad-brand: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    --grad-soft:  linear-gradient(135deg, rgba(99,102,241,.16), rgba(139,92,246,.16));

    --bg:          #090d17;
    --bg-tint:     #0c1220;
    --surface:     #111827;
    --surface-2:   #0e1522;
    --surface-3:   #1a2334;
    --border:      #232f45;
    --border-strong:#33415c;

    --text:   #e9edf7;
    --text-2: #c0cadd;
    --muted:  #8c9ab3;

    --primary:      #8b96fb;
    --primary-hover:#a5b0fd;
    --primary-soft: rgba(129,140,248,.15);
    --violet-soft:  rgba(139,92,246,.18);
    --primary-ring: rgba(129,140,248,.34);
    --on-primary:   #0a1020;
    --success:      #5ed690;
    --success-soft: rgba(94,214,144,.14);
    --danger:       #ff8f8f;
    --danger-soft:  rgba(255,143,143,.13);
    --danger-border:rgba(255,143,143,.30);
    --warning:      #fcd34d;
    --warning-soft: rgba(252,211,77,.13);
    --info:         #7dd3fc;
    --info-soft:    rgba(125,211,252,.13);

    --shadow-xs: 0 1px 2px rgba(0,0,0,.5);
    --shadow-sm: 0 1px 2px rgba(0,0,0,.45), 0 1px 3px rgba(0,0,0,.35);
    --shadow:    0 8px 22px -8px rgba(0,0,0,.6), 0 1px 3px rgba(0,0,0,.4);
    --shadow-lg: 0 26px 54px -16px rgba(0,0,0,.72), 0 8px 18px -8px rgba(0,0,0,.5);
}

/* ========================= 2. 基础 ========================= */
* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    font-size: var(--fs-md);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    transition: background .2s ease, color .2s ease;
}

h1, h2, h3, h4 { margin: 0; font-weight: 600; letter-spacing: -.01em; }

a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }

::selection { background: var(--primary-soft); color: var(--text); }

* { scrollbar-width: thin; scrollbar-color: var(--border-strong) transparent; }
*::-webkit-scrollbar { width: 10px; height: 10px; }
*::-webkit-scrollbar-thumb {
    background: var(--border-strong);
    border: 3px solid transparent;
    background-clip: content-box;
    border-radius: var(--radius-pill);
}
*::-webkit-scrollbar-thumb:hover { background: var(--muted); background-clip: content-box; }

/* 图标：所有 SVG 统一由 JS 尺寸类控制 */
.ico { width: 16px; height: 16px; flex: 0 0 auto; display: inline-block; vertical-align: -3px; }
.ico-fill { fill: currentColor; }
.ico-lg { width: 26px; height: 26px; }
.ico-xl { width: 40px; height: 40px; stroke-width: 1.2; }

/* ========================= 3. 布局骨架 ========================= */
.shell { display: flex; min-height: 100vh; }

/* ---- 侧栏 ---- */
.side {
    width: var(--side-w);
    flex: 0 0 var(--side-w);
    background: var(--surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 0;
    height: 100vh;
    z-index: 60;
}
.side-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 18px var(--sp-5) 16px;
    font-size: var(--fs-lg);
    font-weight: 650;
    letter-spacing: -.015em;
    border-bottom: 1px solid var(--border);
    min-height: var(--top-h);
}
.side-brand .logo {
    width: 26px; height: 26px; border-radius: 8px;
    background: var(--grad-brand);
    display: inline-flex; align-items: center; justify-content: center;
    color: #fff; flex: 0 0 auto;
    box-shadow: 0 4px 12px -4px rgba(79,70,229,.6);
}
.side-brand .logo .ico { width: 15px; height: 15px; stroke-width: 2; }
.side-brand .brand-text { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.side-brand .brand-sub {
    display: block; font-size: 11px; font-weight: 500; color: var(--muted);
    letter-spacing: .02em; margin-top: -1px;
}

.side-scroll { flex: 1; overflow: auto; padding: var(--sp-3) var(--sp-3) var(--sp-4); }
.side-group-title {
    padding: var(--sp-3) var(--sp-3) var(--sp-2);
    font-size: 11px; font-weight: 600; letter-spacing: .06em;
    text-transform: uppercase; color: var(--muted);
}

/* 侧栏导航复用 .tabs/.tab 类名，让既有 JS 选择器（.tabs .tab）零改动；
   选择器写成 .tabs.side-nav 是为了压过后面的通用 .tabs 规则 */
.tabs.side-nav {
    display: flex; flex-direction: column; gap: 2px;
    border: 0; margin: 0; flex-wrap: nowrap;
}
.tabs.side-nav .tab {
    position: relative;
    display: flex; align-items: center; gap: 10px;
    padding: 9px var(--sp-3);
    border: 0; background: none;
    border-radius: var(--radius-sm);
    color: var(--text-2);
    font: inherit; font-size: var(--fs-md); font-weight: 500;
    margin: 0; text-align: left; cursor: pointer;
    transition: background .14s, color .14s;
}
.tabs.side-nav .tab .ico { width: 17px; height: 17px; color: var(--muted); transition: color .14s; }
.tabs.side-nav .tab:hover { background: var(--surface-3); color: var(--text); }
.tabs.side-nav .tab.active {
    background: var(--primary-soft);
    color: var(--primary);
    font-weight: 600;
}
.tabs.side-nav .tab.active .ico { color: var(--primary); }
.tabs.side-nav .tab.active::before {
    content: ""; position: absolute; left: -12px; top: 50%;
    width: 3px; height: 18px; transform: translateY(-50%);
    border-radius: 0 3px 3px 0; background: var(--grad-brand);
}
.tabs.side-nav .tab:focus-visible { outline: none; box-shadow: var(--ring); }

.side-foot {
    padding: var(--sp-3) var(--sp-4);
    border-top: 1px solid var(--border);
    font-size: var(--fs-xs); color: var(--muted);
    display: flex; align-items: center; justify-content: space-between; gap: var(--sp-2);
}

/* ---- 右列 ---- */
.shell-main { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.app-header {
    position: sticky; top: 0; z-index: 50;
    min-height: var(--top-h);
    display: flex; align-items: center; justify-content: space-between; gap: var(--sp-4);
    padding: 0 var(--sp-6);
    background: color-mix(in srgb, var(--surface) 82%, transparent);
    -webkit-backdrop-filter: var(--header-blur);
    backdrop-filter: var(--header-blur);
    border-bottom: 1px solid var(--border);
}
/* color-mix 兜底：老浏览器直接用品面色 */
@supports not (background: color-mix(in srgb, red 50%, transparent)) {
    .app-header { background: var(--surface); }
}
.app-header .page-title { font-size: var(--fs-xl); font-weight: 650; }
.app-header .page-sub { font-size: var(--fs-sm); color: var(--muted); margin-top: -2px; }
.app-header nav, .header-actions { display: flex; align-items: center; gap: var(--sp-2); }
.app-header nav a { color: var(--text-2); font-size: var(--fs-sm); padding: 6px 10px; border-radius: var(--radius-sm); }
.app-header nav a:hover { background: var(--surface-3); color: var(--text); text-decoration: none; }

.user-chip {
    display: flex; align-items: center; gap: 8px;
    padding: 4px 10px 4px 4px;
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    background: var(--surface);
    font-size: var(--fs-sm); color: var(--text-2);
}
.user-chip .avatar {
    width: 24px; height: 24px; border-radius: 50%;
    background: var(--grad-brand); color: #fff;
    display: inline-flex; align-items: center; justify-content: center;
    font-size: 11px; font-weight: 700;
}

/* 独立顶栏（上传中心等没有侧栏的页面） */
.top-bar {
    background: var(--surface);
    -webkit-backdrop-filter: none;
    backdrop-filter: none;
    padding: 0 var(--sp-6);
}
.top-bar .brand {
    display: flex; align-items: center; gap: 10px;
    font-size: var(--fs-lg); font-weight: 650; letter-spacing: -.015em;
}
.top-bar .brand .logo {
    width: 26px; height: 26px; border-radius: 8px;
    background: var(--grad-brand); color: #fff;
    display: inline-flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 12px -4px rgba(79,70,229,.6);
}
.top-bar .brand .logo .ico { width: 15px; height: 15px; stroke-width: 2; }
.top-bar .brand .brand-sub {
    display: block; font-size: 11px; font-weight: 500;
    color: var(--muted); letter-spacing: .02em; margin-top: -2px;
}

/* 提示条 */
.notice {
    display: flex; align-items: flex-start; gap: 8px;
    padding: 10px 13px;
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: var(--fs-sm); color: var(--text-2);
}
.notice-warn {
    background: var(--warning-soft);
    border-color: color-mix(in srgb, var(--warning) 26%, transparent);
    color: var(--warning);
}

.container { width: 100%; max-width: 1280px; margin: 0 auto; padding: var(--sp-6) var(--sp-6) var(--sp-8); }
.container.narrow { max-width: 620px; }

/* ========================= 4. 卡片与标题 ========================= */
.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--sp-5);
    margin-bottom: var(--sp-5);
}
.card > h2, .card > h3 { margin: 0 0 var(--sp-4); font-size: var(--fs-xl); font-weight: 650; }
.card > h3 { font-size: var(--fs-lg); }
.card-flush { padding: 0; overflow: hidden; }

.section-head {
    display: flex; align-items: flex-start; justify-content: space-between;
    gap: var(--sp-4); flex-wrap: wrap; margin-bottom: var(--sp-4);
}
.section-head h2, .section-head h3 { margin: 0; font-size: var(--fs-lg); font-weight: 650; }
.section-head .sub { font-size: var(--fs-sm); color: var(--muted); margin: 2px 0 0; max-width: 72ch; }

/* ========================= 5. 按钮 ========================= */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    padding: 8px 15px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    border-radius: var(--radius-sm);
    font: inherit; font-size: var(--fs-md); font-weight: 500;
    cursor: pointer; white-space: nowrap;
    box-shadow: var(--shadow-xs);
    transition: background .14s, border-color .14s, color .14s, box-shadow .14s, transform .1s;
}
.btn:hover { background: var(--surface-3); border-color: var(--border-strong); }
.btn:active { transform: translateY(1px); }
.btn:focus-visible { outline: none; box-shadow: var(--ring); }
.btn:disabled { opacity: .5; cursor: not-allowed; box-shadow: none; }
.btn .ico { width: 15px; height: 15px; color: var(--muted); }

.btn-primary {
    background: var(--grad-brand);
    border-color: transparent;
    color: var(--on-primary);
    box-shadow: 0 6px 16px -8px rgba(79,70,229,.7), var(--shadow-xs);
}
.btn-primary:hover { background: var(--grad-brand); filter: brightness(1.06); border-color: transparent; }
.btn-primary .ico { color: currentColor; }

.btn-danger { background: var(--surface); border-color: var(--danger-border); color: var(--danger); }
.btn-danger:hover { background: var(--danger-soft); border-color: var(--danger); }
.btn-danger .ico { color: currentColor; }

.btn-ghost { background: transparent; border-color: transparent; box-shadow: none; color: var(--text-2); }
.btn-ghost:hover { background: var(--surface-3); border-color: transparent; }

.btn-sm { padding: 5px 10px; font-size: var(--fs-sm); border-radius: var(--radius-xs); gap: 4px; }
.btn-sm .ico { width: 14px; height: 14px; }
.btn-lg { padding: 11px 20px; font-size: var(--fs-lg); border-radius: var(--radius); }
.btn-block { width: 100%; }

/* 纯图标按钮 */
.icon-btn {
    display: inline-flex; align-items: center; justify-content: center;
    width: 34px; height: 34px; padding: 0;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface); color: var(--text-2);
    cursor: pointer; box-shadow: var(--shadow-xs);
    transition: background .14s, color .14s, border-color .14s;
}
.icon-btn:hover { background: var(--surface-3); color: var(--text); }
.icon-btn:focus-visible { outline: none; box-shadow: var(--ring); }
.icon-btn .ico { width: 17px; height: 17px; }

/* ========================= 6. 表单 ========================= */
.form-group { margin-bottom: var(--sp-4); }
.form-group label {
    display: block; margin-bottom: 6px;
    font-size: var(--fs-sm); font-weight: 600; color: var(--text-2);
}
.form-control {
    width: 100%; padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font: inherit; font-size: var(--fs-md);
    color: var(--text);
    background: var(--surface);
    transition: border-color .14s, box-shadow .14s, background .14s;
}
.form-control::placeholder { color: color-mix(in srgb, var(--muted) 78%, transparent); }
.form-control:hover { border-color: var(--border-strong); }
.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: var(--ring);
}
.form-control:disabled { background: var(--surface-2); color: var(--muted); cursor: not-allowed; }
select.form-control {
    appearance: none;
    background-image: linear-gradient(45deg, transparent 50%, var(--muted) 50%),
                      linear-gradient(135deg, var(--muted) 50%, transparent 50%);
    background-position: calc(100% - 16px) 17px, calc(100% - 11px) 17px;
    background-size: 5px 5px, 5px 5px;
    background-repeat: no-repeat;
    padding-right: 34px;
}
textarea.form-control { min-height: 92px; font-family: var(--mono); font-size: var(--fs-sm); resize: vertical; }
.form-hint { font-size: var(--fs-xs); color: var(--muted); margin-top: 5px; }
.form-row { display: flex; gap: var(--sp-3); align-items: flex-end; flex-wrap: wrap; }
.form-row .form-group { flex: 1 1 180px; margin-bottom: 0; }

/* 验证码 */
.captcha-row { display: flex; gap: 10px; align-items: stretch; }
.captcha-row .form-control { flex: 1; }
.captcha-img {
    height: 40px; min-width: 118px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer; background: #fff; display: block;
    transition: border-color .14s, box-shadow .14s;
}
.captcha-img:hover { border-color: var(--primary); box-shadow: var(--ring); }
.captcha-wrap { position: relative; }
.captcha-wrap .refresh-hint {
    position: absolute; right: 0; bottom: -17px;
    font-size: var(--fs-xs); color: var(--muted);
}

/* 复选框 */
.checkbox-group {
    display: flex; flex-wrap: wrap; gap: var(--sp-2) var(--sp-4);
    padding: var(--sp-2) 0;
}
.checkbox-inline {
    display: inline-flex; align-items: center; gap: 7px;
    margin: 0; font-weight: 400; color: var(--text-2); cursor: pointer;
    padding: 4px 10px; border: 1px solid var(--border); border-radius: var(--radius-pill);
    background: var(--surface); font-size: var(--fs-sm);
    transition: border-color .14s, background .14s, color .14s;
}
.checkbox-inline:hover { border-color: var(--primary); color: var(--primary); }
.checkbox-inline input { accent-color: var(--primary); margin: 0; }
.checkbox-inline:has(input:checked) {
    background: var(--primary-soft); border-color: var(--primary); color: var(--primary); font-weight: 600;
}

/* ========================= 7. 拖拽上传区 ========================= */
.dropzone {
    border: 1.5px dashed var(--border-strong);
    border-radius: var(--radius-lg);
    background: var(--surface-2);
    padding: 34px 20px;
    text-align: center;
    cursor: pointer;
    transition: border-color .16s, background .16s, box-shadow .16s, transform .16s;
}
.dropzone:hover, .dropzone.dragging {
    border-color: var(--primary);
    border-style: solid;
    background: var(--primary-soft);
    box-shadow: var(--ring);
}
.dropzone .icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 46px; height: 46px; margin-bottom: 10px;
    border-radius: var(--radius);
    background: var(--grad-soft); color: var(--primary);
}
.dropzone .icon .ico { width: 22px; height: 22px; }
.dropzone .title { font-weight: 600; margin-bottom: 2px; }
.dropzone .hint { color: var(--muted); font-size: var(--fs-sm); }

/* ========================= 8. 表格 ========================= */
.table-wrap {
    overflow: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface);
}
table.table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    font-size: var(--fs-sm);
}
table.table th, table.table td {
    padding: 11px 14px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}
table.table thead th {
    position: sticky; top: 0; z-index: 2;
    background: var(--surface-2);
    color: var(--muted);
    font-size: 11.5px; font-weight: 600;
    letter-spacing: .04em; text-transform: uppercase;
    white-space: nowrap;
}
table.table tbody tr:last-child td { border-bottom: 0; }
table.table tbody tr { transition: background .12s; }
table.table tbody tr:hover td { background: var(--surface-2); }
table.table td.text-right, table.table th.text-right {
    font-variant-numeric: tabular-nums;
}
table.table .cell-title { font-family: var(--mono); font-size: var(--fs-sm); color: var(--text); }
table.table img.thumb-sm {
    width: 44px; height: 44px; object-fit: cover;
    border-radius: var(--radius-sm);
    background: var(--surface-3);
    border: 1px solid var(--border);
    display: block;
}
table.table td .btn + .btn { margin-left: 4px; }
/*  colspan 提示行（暂无数据）统一居中最小化 */
table.table td[colspan] { text-align: center; color: var(--muted); padding: 30px 16px; font-size: var(--fs-sm); }
table.table td[colspan].empty-row { text-align: center; }

.nowrap { white-space: nowrap; }
.mono { font-family: var(--mono); font-size: 12.5px; }
.text-muted { color: var(--muted); }
.text-right { text-align: right; }
.empty-row { padding: 34px 16px; text-align: center; color: var(--muted); font-size: var(--fs-sm); }

/* ========================= 9. 统计卡 ========================= */
.stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: var(--sp-4);
    margin-bottom: var(--sp-5);
}
.stat-card {
    position: relative;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--sp-4) var(--sp-5);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}
.stat-card::after {
    content: ""; position: absolute; inset: 0 0 auto 0; height: 2px;
    background: var(--grad-brand); opacity: .55;
}
.stat-card .label {
    display: flex; align-items: center; gap: 7px;
    font-size: var(--fs-sm); color: var(--muted); margin-bottom: 6px;
}
.stat-card .label .ico { width: 15px; height: 15px; color: var(--primary); }
.stat-card .value {
    font-size: 27px; font-weight: 700; line-height: 1.15;
    letter-spacing: -.02em; font-variant-numeric: tabular-nums;
}
.stat-card .sub { font-size: var(--fs-xs); color: var(--muted); margin-top: 3px; }

/* ========================= 10. 分段控件（上传方式切换） ========================= */
.tabs {
    display: flex; gap: 4px; flex-wrap: wrap;
    border-bottom: 1px solid var(--border);
    margin-bottom: var(--sp-5);
}
.tabs .tab {
    padding: 9px 16px; cursor: pointer;
    border-bottom: 2px solid transparent;
    color: var(--muted); font-weight: 500; margin-bottom: -1px;
    background: none; border-left: 0; border-right: 0; border-top: 0;
    font: inherit; font-size: var(--fs-md);
}
.tabs .tab:hover { color: var(--text); }
.tabs .tab.active { color: var(--primary); border-bottom-color: var(--primary); font-weight: 600; }

.segmented {
    display: inline-flex; gap: 2px; padding: 3px;
    background: var(--surface-3);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    margin-bottom: var(--sp-4);
}
.segmented .tab {
    padding: 7px 16px; border: 0; background: none; border-radius: var(--radius-pill);
    font: inherit; font-size: var(--fs-sm); font-weight: 500; color: var(--muted); cursor: pointer;
    display: inline-flex; align-items: center; gap: 6px;
}
.segmented .tab:hover { color: var(--text); }
.segmented .tab.active {
    background: var(--surface); color: var(--primary); font-weight: 600;
    box-shadow: var(--shadow-xs);
}

/* ========================= 11. 登录页 ========================= */
.login-wrapper {
    min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    padding: var(--sp-5);
    background:
        radial-gradient(1100px 520px at 12% -8%, var(--primary-soft), transparent 62%),
        radial-gradient(880px 480px at 92% 8%, var(--violet-soft), transparent 60%),
        var(--bg);
}
.login-box {
    position: relative;
    width: 100%; max-width: 424px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: 34px 32px 28px;
}
.login-box .login-brand {
    display: inline-flex; align-items: center; justify-content: center;
    width: 44px; height: 44px; border-radius: var(--radius);
    background: var(--grad-brand); color: #fff;
    margin-bottom: var(--sp-4);
    box-shadow: 0 10px 22px -10px rgba(79,70,229,.8);
}
.login-box .login-brand .ico { width: 22px; height: 22px; stroke-width: 2; }
.login-box .login-title { font-size: 20px; font-weight: 650; letter-spacing: -.02em; }
.login-box .login-sub { color: var(--muted); margin: 2px 0 var(--sp-5); font-size: var(--fs-sm); }
.login-box .login-foot {
    margin-top: var(--sp-5); padding-top: var(--sp-4);
    border-top: 1px solid var(--border);
    display: flex; align-items: center; justify-content: space-between; gap: var(--sp-2);
    font-size: var(--fs-sm);
}
.login-theme { position: absolute; top: 18px; right: 18px; }

/* ========================= 12. Toast ========================= */
#toast-container {
    position: fixed; top: 18px; right: 18px; z-index: 9999;
    display: flex; flex-direction: column; gap: 10px;
    pointer-events: none;
}
.toast {
    pointer-events: auto;
    display: flex; align-items: flex-start; gap: 10px;
    min-width: 240px; max-width: 400px;
    padding: 12px 14px;
    border-radius: var(--radius);
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
    color: var(--text);
    font-size: var(--fs-md);
    animation: toast-in .24s cubic-bezier(.16,1,.3,1);
}
.toast .toast-ico { width: 18px; height: 18px; margin-top: 1px; color: var(--primary); }
.toast .toast-msg { min-width: 0; word-break: break-word; }
.toast.success .toast-ico { color: var(--success); }
.toast.error   .toast-ico { color: var(--danger); }
.toast.warning .toast-ico { color: var(--warning); }
.toast.success { border-color: color-mix(in srgb, var(--success) 32%, var(--border)); }
.toast.error   { border-color: color-mix(in srgb, var(--danger) 32%, var(--border)); }
.toast.warning { border-color: color-mix(in srgb, var(--warning) 32%, var(--border)); }
.toast.leaving { opacity: 0; transform: translateX(18px) scale(.98); transition: opacity .22s, transform .22s; }
@keyframes toast-in {
    from { opacity: 0; transform: translateX(22px) scale(.97); }
    to   { opacity: 1; transform: translateX(0) scale(1); }
}

/* ========================= 13. 弹窗 ========================= */
.modal-mask {
    position: fixed; inset: 0; z-index: 200;
    display: flex; align-items: center; justify-content: center;
    padding: var(--sp-5);
    background: rgba(9,13,23,.52);
    -webkit-backdrop-filter: blur(3px);
    backdrop-filter: blur(3px);
    animation: mask-in .16s ease-out;
}
.modal {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    width: 100%; max-width: 520px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    animation: modal-in .22s cubic-bezier(.16,1,.3,1);
}
.modal.modal-lg { max-width: 940px; }
.modal .modal-head {
    padding: 15px var(--sp-5);
    border-bottom: 1px solid var(--border);
    font-weight: 650; font-size: var(--fs-lg);
    display: flex; align-items: center; justify-content: space-between; gap: var(--sp-3);
    background: var(--surface-2);
}
.modal-close {
    display: inline-flex; align-items: center; justify-content: center;
    width: 30px; height: 30px; padding: 0;
    background: none; border: 0; border-radius: var(--radius-sm);
    color: var(--muted); cursor: pointer;
    transition: background .14s, color .14s;
}
.modal-close:hover { background: var(--surface-3); color: var(--text); }
.modal-close .ico { width: 18px; height: 18px; }
.modal .modal-body { padding: var(--sp-5); max-height: 70vh; overflow: auto; text-align: center; }
.modal .modal-body img,
.modal .modal-body video {
    max-width: 100%; max-height: 62vh;
    border-radius: var(--radius); background: var(--surface-3);
}
.modal .modal-body audio { width: 100%; }
.modal .modal-foot {
    padding: 14px var(--sp-5);
    border-top: 1px solid var(--border);
    display: flex; align-items: center; justify-content: flex-end; gap: 10px; flex-wrap: wrap;
    background: var(--surface-2);
}
.preview-na {
    padding: 40px 20px; color: var(--muted);
    display: flex; flex-direction: column; align-items: center; gap: 10px;
}
.preview-na .ico { color: var(--border-strong); }
.preview-na-name { color: var(--text); font-weight: 600; font-size: var(--fs-lg); word-break: break-all; }
.preview-na-tip { font-size: var(--fs-sm); max-width: 46ch; }
.secret-box {
    background: var(--warning-soft);
    border: 1px solid color-mix(in srgb, var(--warning) 30%, transparent);
    color: var(--warning);
    padding: 11px 13px; border-radius: var(--radius-sm);
    font-size: var(--fs-sm); margin-top: var(--sp-3); text-align: left;
    word-break: break-all;
}
@keyframes mask-in  { from { opacity: 0; } to { opacity: 1; } }
@keyframes modal-in {
    from { opacity: 0; transform: translateY(12px) scale(.985); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}

/* ========================= 14. 徽章 / 药丸 ========================= */
.badge {
    display: inline-flex; align-items: center; gap: 4px;
    padding: 2px 9px; border-radius: var(--radius-pill);
    font-size: var(--fs-xs); font-weight: 600; line-height: 1.7;
    background: var(--surface-3); color: var(--text-2);
    border: 1px solid transparent; white-space: nowrap;
}
.badge-image    { background: var(--primary-soft); color: var(--primary); }
.badge-video    { background: #fae8ff; color: #a21caf; }
.badge-audio    { background: var(--warning-soft); color: var(--warning); }
.badge-package  { background: var(--danger-soft);  color: var(--danger); }
.badge-document { background: var(--success-soft); color: var(--success); }
.badge-on  { background: var(--success-soft); color: var(--success); }
.badge-off { background: var(--surface-3);    color: var(--muted); }
.badge .ico { width: 12px; height: 12px; }
/* JS 填充前的占位徽章（还没数据）不显示，避免出现一个空药丸 */
.badge:empty { display: none; }

/* 非图片文件的表格占位 */
.file-icon {
    display: inline-flex; align-items: center; justify-content: center;
    width: 44px; height: 44px; border-radius: var(--radius-sm);
    background: var(--surface-3); color: var(--muted);
    border: 1px solid var(--border);
}
.file-icon .ico { width: 20px; height: 20px; }
.thumb-lg {
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 6px;
    height: 132px; background: var(--surface-3); color: var(--muted); font-size: var(--fs-sm);
}
.thumb-lg .ico { width: 28px; height: 28px; }

/* ========================= 15. 条形图（无图表库） ========================= */
.bar-row { display: flex; align-items: center; gap: var(--sp-3); margin-bottom: 11px; }
.bar-label { width: 76px; flex: 0 0 auto; font-size: var(--fs-sm); color: var(--text-2); }
.bar-track {
    flex: 1; height: 8px;
    background: var(--surface-3);
    border-radius: var(--radius-pill); overflow: hidden;
}
.bar-track > i {
    display: block; height: 100%;
    background: var(--grad-brand);
    border-radius: var(--radius-pill);
    transition: width .3s cubic-bezier(.16,1,.3,1);
}
.bar-value {
    width: 190px; flex: 0 0 auto; text-align: right;
    font-size: var(--fs-sm); color: var(--muted);
    font-variant-numeric: tabular-nums;
}

/* ========================= 16. 服务器文件浏览 ========================= */
.fs-crumb {
    margin-bottom: var(--sp-4); padding: 10px var(--sp-4);
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: var(--fs-sm); line-height: 1.9; word-break: break-all;
}
.fs-crumb a { color: var(--primary); }
.fs-crumb .sep { margin: 0 6px; color: var(--muted); }

.fs-dir {
    display: inline-flex; align-items: center; gap: 5px;
    color: var(--primary); font-weight: 500; text-decoration: none;
}
.fs-dir .ico { width: 14px; height: 14px; color: var(--muted); }
.fs-dir:hover { text-decoration: underline; }
.fs-ico { margin-right: 4px; }

.fs-path-hint { font-size: var(--fs-xs); color: var(--muted); word-break: break-all; }
.fs-path-hint .badge, .fs-card-meta .badge { font-size: 11px; padding: 0 6px; }

/* ---- 自定义文件夹 ---- */
.fs-saved {
    margin-bottom: var(--sp-4); padding: var(--sp-4);
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}
.fs-saved-head { display: flex; align-items: baseline; gap: 10px; margin-bottom: 10px; flex-wrap: wrap; }
.fs-saved-title {
    font-weight: 650; font-size: var(--fs-sm);
    display: inline-flex; align-items: center; gap: 6px;
}
.fs-saved-title .ico { width: 15px; height: 15px; color: var(--primary); }
.fs-saved-head .text-muted { font-size: var(--fs-xs); }
.fs-saved-list { display: flex; flex-wrap: wrap; gap: var(--sp-2); }

.fs-chip {
    display: inline-flex; align-items: center; max-width: 100%;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-pill);
    padding: 4px 6px 4px 12px;
    font-size: var(--fs-sm);
    box-shadow: var(--shadow-xs);
    transition: border-color .14s, background .14s, box-shadow .14s;
}
.fs-chip:hover { border-color: var(--border-strong); }
.fs-chip > a {
    display: inline-flex; align-items: center; gap: 6px;
    min-width: 0; color: var(--text-2); text-decoration: none;
}
.fs-chip > a .ico { width: 14px; height: 14px; color: var(--muted); }
.fs-chip > a span { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 240px; }
.fs-chip > a:hover { color: var(--primary); }
.fs-chip > a:hover .ico { color: var(--primary); }
.fs-chip-bad { background: var(--danger-soft); border-color: var(--danger-border); }
.fs-chip-bad > a { color: var(--danger); text-decoration: line-through; }
.fs-chip-x {
    display: inline-flex; align-items: center; justify-content: center;
    width: 20px; height: 20px; margin-left: 4px; padding: 0;
    border: 0; background: transparent; color: var(--muted);
    border-radius: 50%; cursor: pointer;
    transition: background .14s, color .14s;
}
.fs-chip-x .ico { width: 13px; height: 13px; }
.fs-chip-x:hover { color: var(--danger); background: var(--danger-soft); }
.fs-chip-active {
    background: var(--primary-soft);
    border-color: var(--primary);
    box-shadow: var(--ring);
}
.fs-chip-active > a { color: var(--primary); font-weight: 600; }
.fs-chip-active > a .ico { color: var(--primary); }

/* ---- 工具栏 ---- */
.fs-toolbar { display: flex; align-items: center; gap: var(--sp-2); flex-wrap: wrap; }
.fs-toolbar .sync-tip {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: var(--fs-xs); color: var(--muted);
    max-width: 260px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.fs-toolbar .sync-tip::before {
    content: ""; width: 6px; height: 6px; border-radius: 50%; flex: 0 0 auto;
    background: var(--success);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--success) 22%, transparent);
}
.fs-toolbar .sync-tip.off::before { background: var(--muted); box-shadow: none; }

/* ---- 文件卡片网格 ---- */
.fs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
    gap: var(--sp-3);
    max-height: 620px; overflow: auto;
    padding: 2px;
}
.fs-card {
    display: flex; flex-direction: column; overflow: hidden;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: border-color .16s, box-shadow .16s, transform .16s;
}
.fs-card:hover {
    border-color: var(--border-strong);
    box-shadow: var(--shadow);
    transform: translateY(-2px);
}
.fs-card-linked { border-color: color-mix(in srgb, var(--primary) 38%, var(--border)); }
.fs-card-thumb {
    position: relative; height: 116px;
    background: var(--surface-3);
    cursor: zoom-in;
    display: flex; align-items: center; justify-content: center;
    overflow: hidden;
}
.fs-card-plain { background: var(--surface-2); cursor: pointer; }
.fs-card-img {
    display: block; width: 100%; height: 100%;
    object-fit: contain;
    transition: transform .24s cubic-bezier(.16,1,.3,1);
}
.fs-card-thumb:hover .fs-card-img { transform: scale(1.04); }
.fs-card-ico { display: inline-flex; color: var(--muted); }
.fs-card-ico .ico { width: 30px; height: 30px; stroke-width: 1.4; }
.fs-card-ico-alt { position: absolute; display: none; }
.fs-thumb-failed .fs-card-ico-alt { display: inline-flex; }
.fs-card-body { flex: 1; min-width: 0; padding: 9px 11px 6px; }
.fs-card-name {
    font-size: var(--fs-sm); font-weight: 600; color: var(--text);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.fs-card-meta {
    margin-top: 2px; font-size: var(--fs-xs); color: var(--muted);
    white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
    font-variant-numeric: tabular-nums;
}
.fs-card-rel {
    font-size: 11px; color: var(--muted);
    display: inline-flex; align-items: center; gap: 3px; text-decoration: none;
}
.fs-card-rel .ico { width: 11px; height: 11px; }
.fs-card-rel:hover { color: var(--primary); text-decoration: none; }
.fs-card-ops {
    display: flex; flex-wrap: wrap; gap: 4px;
    padding: 6px 8px 8px;
    border-top: 1px solid var(--border);
    background: var(--surface-2);
}
.fs-card-ops .btn { padding: 3px 8px; font-size: 12px; box-shadow: none; }
.fs-card-ops .btn .ico { width: 12px; height: 12px; }
.fs-card-ops a.btn:hover { text-decoration: none; }
.fs-card-blocked .fs-card-thumb { cursor: default; }
.fs-grid .empty-row { grid-column: 1 / -1; }

/* ========================= 17. 代码块（接入示例） ========================= */
.code {
    margin: 0; padding: var(--sp-4);
    background: var(--surface-2);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: auto;
    font-family: var(--mono);
    font-size: 12.5px;
    line-height: 1.7;
    color: var(--text-2);
    tab-size: 4;
}
.code-lang {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: var(--fs-xs); font-weight: 600; letter-spacing: .06em;
    text-transform: uppercase; color: var(--muted);
    margin-bottom: 8px;
}
code.inline {
    background: var(--surface-3);
    border: 1px solid var(--border);
    padding: 1px 6px; border-radius: var(--radius-xs);
    font-family: var(--mono); font-size: 12.5px; color: var(--text-2);
}

/* ========================= 18. 上传结果 ========================= */
.upload-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--sp-4);
}
.upload-item {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    display: flex; flex-direction: column;
    box-shadow: var(--shadow-xs);
    transition: border-color .16s, box-shadow .16s;
}
.upload-item:hover { border-color: var(--border-strong); box-shadow: var(--shadow); }
.upload-item .thumb {
    width: 100%; height: 132px; object-fit: cover;
    background: var(--surface-3); display: block;
}
.upload-item .meta {
    flex: 1; padding: 9px 11px;
    font-size: var(--fs-xs); color: var(--muted);
    border-top: 1px solid var(--border);
    display: flex; flex-direction: column; gap: 3px;
}
.upload-item .meta strong { color: var(--text); font-variant-numeric: tabular-nums; }
.upload-item .actions {
    display: flex; gap: 6px; flex-wrap: wrap;
    padding: 8px 10px;
    border-top: 1px solid var(--border);
    background: var(--surface-2);
}
.upload-item .actions .btn { box-shadow: none; }
.progress-bar {
    height: 4px; background: var(--surface-3);
    border-radius: var(--radius-pill); overflow: hidden; margin-top: 8px;
}
.progress-bar > i {
    display: block; height: 100%; width: 0;
    background: var(--grad-brand);
    transition: width .25s cubic-bezier(.16,1,.3,1);
}
.upload-pending {
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 10px;
    height: 132px; padding: 0 14px;
    color: var(--muted); font-size: var(--fs-sm);
    background: var(--surface-2);
}
.upload-pending .ico { width: 22px; height: 22px; color: var(--primary); }
.upload-pending .progress-bar { width: 100%; margin-top: 0; }
.meta-dedup {
    display: inline-flex; align-items: center; gap: 4px;
    color: var(--success); font-weight: 600;
}
.meta-dedup .ico { width: 12px; height: 12px; }
.upload-failed { border-color: var(--danger-border); }
.upload-failed .upload-failed-body {
    display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 8px;
    min-height: 132px; padding: 16px 14px; text-align: center;
    color: var(--danger); font-size: var(--fs-sm);
    background: var(--danger-soft);
}
.upload-failed .ico { width: 22px; height: 22px; }

/* ========================= 19. 工具类 ========================= */
.hidden { display: none !important; }
.flex-between {
    display: flex; align-items: center; justify-content: space-between;
    gap: var(--sp-3); flex-wrap: wrap;
}
.flex { display: flex; align-items: center; gap: var(--sp-2); flex-wrap: wrap; }
.stack { display: flex; flex-direction: column; gap: var(--sp-3); }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.divider { height: 1px; background: var(--border); margin: var(--sp-4) 0; }

/* ========================= 20. 响应式 ========================= */
@media (max-width: 1080px) {
    .shell { flex-direction: column; }
    .side {
        width: auto; flex: none; height: auto;
        border-right: 0; border-bottom: 1px solid var(--border);
        position: sticky; top: 0;
    }
    .side-brand { border-bottom: 0; padding: 12px var(--sp-4); min-height: 54px; }
    .side-scroll { padding: 0 var(--sp-3) var(--sp-3); overflow: visible; }
    .side-group-title { display: none; }
    .tabs.side-nav { flex-direction: row; gap: 6px; overflow: auto; padding-bottom: 2px; }
    .tabs.side-nav .tab { padding: 8px 12px; white-space: nowrap; }
    .tabs.side-nav .tab.active::before { display: none; }
    .side-foot { display: none; }
    .container { padding: var(--sp-5) var(--sp-4); }
    .app-header { padding: 0 var(--sp-4); }
}

@media (max-width: 640px) {
    .container { padding: var(--sp-4) var(--sp-3) var(--sp-6); }
    .card { padding: var(--sp-4); border-radius: var(--radius); }
    .stat-grid { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: var(--sp-3); }
    .stat-card .value { font-size: 22px; }
    .bar-value { width: 108px; }
    .fs-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
    .app-header .page-sub { display: none; }
    #toast-container { left: var(--sp-3); right: var(--sp-3); top: auto; bottom: var(--sp-3); }
    .toast { max-width: none; min-width: 0; }
    .modal .modal-foot { justify-content: stretch; }
    .modal .modal-foot .btn { flex: 1 1 auto; }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
    }
}