:root {
    color-scheme: light;
    font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    --bg: #f3f6fb;
    --bg-strong: #0f172a;
    --card: rgba(255, 255, 255, 0.96);
    --card-soft: #f8fafc;
    --text: #0f172a;
    --muted: #64748b;
    --line: #e2e8f0;
    --line-strong: #cbd5e1;
    --primary: #2563eb;
    --primary-soft: #dbeafe;
    --primary-deep: #1d4ed8;
    --success: #16a34a;
    --success-soft: #dcfce7;
    --danger: #dc2626;
    --danger-soft: #fee2e2;
    --shadow: 0 12px 34px rgba(15, 23, 42, .08);
    --shadow-strong: 0 22px 60px rgba(15, 23, 42, .14);
    --radius: 18px;
}

* { box-sizing: border-box; }

html {
    height: 100%;
    background: var(--bg);
}

body {
    min-height: 100%;
    margin: 0;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(37, 99, 235, .10), transparent 26%),
        radial-gradient(circle at top right, rgba(59, 130, 246, .08), transparent 20%),
        var(--bg);
}

body:not(.login-page):not(.public-page) {
    min-height: 100vh;
    overflow-x: hidden;
    overflow-y: auto;
}

html,
body.app-page {
    min-height: 100vh;
}

body.app-page {
    display: block;
    overflow-x: hidden;
}

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

h1, h2, h3, p { margin-top: 0; }
h1 { margin-bottom: 8px; font-size: clamp(28px, 4vw, 38px); }
h2 { margin-bottom: 6px; font-size: 22px; }

.muted { color: var(--muted); }
.mono-text {
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 13px;
    word-break: break-all;
}
.break-link { word-break: break-all; }
.hidden { display: none !important; }

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
    padding: 14px 22px;
    color: #fff;
    background:
        linear-gradient(135deg, rgba(30, 41, 59, .95), rgba(15, 23, 42, .98)),
        var(--bg-strong);
    box-shadow: 0 10px 30px rgba(2, 6, 23, .22);
    flex: 0 0 auto;
}

.compact-topbar {
    padding: 10px 16px;
}

.compact-topbar .topbar-brand h1 {
    font-size: 22px;
}

.compact-topbar .topbar-brand p {
    font-size: 13px;
}

.compact-topbar .nav-link,
.compact-topbar .ghost-btn {
    min-height: 36px;
    padding: 8px 12px;
}

.topbar-brand h1,
.topbar-brand p { margin-bottom: 0; }

.topbar .muted { color: #cbd5e1; }

.topbar-nav {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
}

.nav-link {
    display: inline-flex;
    align-items: center;
    padding: 10px 14px;
    border-radius: 999px;
    color: #dbeafe;
    transition: background .18s ease, color .18s ease;
}

.nav-link:hover {
    text-decoration: none;
    background: rgba(255, 255, 255, .08);
    color: #fff;
}

.nav-link.active {
    background: rgba(255, 255, 255, .14);
    color: #fff;
    font-weight: 700;
}

.container {
    max-width: 1400px;
    width: min(1400px, 100%);
    margin: 0 auto;
    padding: 12px 14px 14px;
    overflow: visible;
}

.app-page .container {
    min-height: 0;
}

.app-container {
    width: 100%;
    flex: 1 1 auto;
    min-height: 0;
}

.app-container-scroll {
    display: flex;
    flex-direction: column;
    gap: 12px;
    min-height: 0;
    overflow: visible;
}

.app-container-scroll > .page-hero,
.app-container-scroll > .alert,
.app-container-scroll > .card:first-of-type,
.app-container-scroll > .grid:first-of-type {
    flex: 0 0 auto;
}

.app-container-scroll > .card,
.app-container-scroll > .grid,
.app-container-scroll > section.card {
    min-height: 0;
}

.app-container-scroll > :last-child {
    flex: 1 1 auto;
    min-height: 0;
}

.app-container-split {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.page-hero {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 10px;
    flex-wrap: wrap;
    padding: 2px 2px 6px;
    flex: 0 0 auto;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 10px;
    padding: 6px 10px;
    border-radius: 999px;
    background: var(--primary-soft);
    color: var(--primary-deep);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: .04em;
    text-transform: uppercase;
}

.hero-meta {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.meta-pill,
.tag {
    display: inline-flex;
    align-items: center;
    padding: 7px 12px;
    border-radius: 999px;
    background: #fff;
    border: 1px solid var(--line);
    color: var(--muted);
    font-size: 13px;
    box-shadow: 0 6px 18px rgba(15, 23, 42, .04);
}

.tag {
    background: var(--primary-soft);
    color: var(--primary-deep);
    border-color: transparent;
    text-transform: capitalize;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 10px;
    margin-bottom: 12px;
}

.stat-card,
.card,
.sub-card {
    background: var(--card);
    border: 1px solid rgba(226, 232, 240, .9);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    backdrop-filter: blur(10px);
}

.stat-card {
    min-width: 0;
    padding: 12px 14px;
}

.stat-label {
    display: block;
    margin-bottom: 6px;
    color: var(--muted);
    font-size: 12px;
}

.stat-value {
    font-size: 22px;
    line-height: 1;
    word-break: break-word;
}

.stat-value-sm {
    font-size: 18px;
    line-height: 1.2;
    word-break: break-word;
}

.card,
.sub-card {
    min-width: 0;
    padding: 16px;
    margin-bottom: 12px;
}

.sub-card {
    margin-bottom: 0;
    background: var(--card-soft);
}

.section-head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
}

.section-head h2,
.section-head p { margin-bottom: 0; }

.action-card {
    background:
        linear-gradient(180deg, rgba(255,255,255,.98), rgba(248,250,252,.98));
}

.admin-layout {
    display: grid;
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 12px;
    align-items: start;
}

.content-stack {
    min-width: 0;
    overflow: visible;
    padding-right: 0;
    padding-bottom: 8px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.content-stack > .card,
.content-stack > .grid,
.content-stack > section {
    margin-bottom: 0;
}

.sidebar-card {
    position: sticky;
    top: 12px;
    max-height: calc(100vh - 110px);
    overflow: auto;
    margin-bottom: 0;
}

.grid {
    display: grid;
    gap: 20px;
}

.grid.two,
.grid.three {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.grid.three {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.app-container-scroll .grid.two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.stack {
    display: grid;
    gap: 14px;
}

label {
    display: grid;
    gap: 7px;
    font-weight: 600;
    font-size: 14px;
}

input, select, button {
    font: inherit;
}

input, select {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: #fff;
    color: var(--text);
    transition: border-color .18s ease, box-shadow .18s ease;
}

input:focus, select:focus {
    outline: none;
    border-color: rgba(37, 99, 235, .55);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, .12);
}

button,
.small-btn,
.ghost-btn,
.danger-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    min-height: 42px;
    padding: 10px 16px;
    border-radius: 12px;
    border: none;
    cursor: pointer;
    transition: transform .12s ease, box-shadow .18s ease, background .18s ease;
}

button:hover,
.small-btn:hover,
.ghost-btn:hover,
.danger-btn:hover {
    text-decoration: none;
    transform: translateY(-1px);
}

button,
.small-btn {
    background: linear-gradient(135deg, var(--primary), var(--primary-deep));
    color: #fff;
    box-shadow: 0 10px 20px rgba(37, 99, 235, .22);
}

.secondary-btn {
    background: #eef4ff;
    color: var(--primary-deep);
    box-shadow: none;
}

.ghost-btn {
    background: transparent;
    border: 1px solid rgba(255,255,255,.18);
    color: #fff;
}

.danger-btn {
    background: linear-gradient(135deg, var(--danger), #b91c1c);
    color: #fff;
    box-shadow: 0 10px 20px rgba(220, 38, 38, .18);
}

.inline-form {
    display: inline-flex;
}

.actions-cell {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.alert {
    padding: 13px 15px;
    border-radius: 14px;
    margin-bottom: 16px;
    border: 1px solid transparent;
    box-shadow: 0 8px 18px rgba(15, 23, 42, .05);
}

.alert.error {
    background: var(--danger-soft);
    color: #991b1b;
    border-color: #fecaca;
}

.alert.success {
    background: var(--success-soft);
    color: #166534;
    border-color: #bbf7d0;
}

.breadcrumb {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.card-strip {
    margin: 18px 0 22px;
    padding: 12px 14px;
    border-radius: 14px;
    background: var(--card-soft);
    border: 1px solid var(--line);
}

.chips {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.chip {
    padding: 8px 12px;
    border-radius: 999px;
    background: #eff6ff;
    color: var(--primary-deep);
    border: 1px solid #dbeafe;
}

.empty-state {
    padding: 28px 16px;
    text-align: center;
    border: 1px dashed var(--line-strong);
    border-radius: 14px;
    background: var(--card-soft);
}

.empty-state.compact {
    padding: 20px 14px;
}

.table-wrap {
    overflow: auto;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: #fff;
    max-width: 100%;
    min-height: 0;
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead {
    background: #f8fafc;
}

th, td {
    padding: 10px 10px;
    border-bottom: 1px solid var(--line);
    text-align: left;
    vertical-align: top;
    word-break: break-word;
}

tbody tr:hover {
    background: #fafcff;
}

.list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    gap: 10px;
}

.rich-list li,
.file-rank-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    padding: 12px 14px;
    border-radius: 14px;
    background: #fff;
    border: 1px solid var(--line);
}

.list-metrics {
    display: grid;
    gap: 12px;
}

.metric-item {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    padding: 12px 14px;
    border-radius: 14px;
    background: var(--card-soft);
    border: 1px solid var(--line);
}

.metric-item span {
    color: var(--muted);
}

.filter-form {
    display: grid;
    grid-template-columns: minmax(0, 1.5fr) minmax(180px, .9fr) auto;
    gap: 10px;
    align-items: end;
}

.filter-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 14px;
}

.password-form {
    max-width: 360px;
    margin: 18px auto 0;
    text-align: left;
}

.upload-progress {
    margin-top: 14px;
    padding: 14px;
    border-radius: 14px;
    background: var(--card-soft);
    border: 1px solid var(--line);
}

.floating-progress {
    margin-bottom: 20px;
}

.progress-bar {
    width: 100%;
    height: 10px;
    overflow: hidden;
    border-radius: 999px;
    background: #dbeafe;
}

.progress-bar span {
    display: block;
    width: 0;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--primary), #60a5fa);
    transition: width .2s ease;
}

.progress-meta {
    display: flex;
    justify-content: space-between;
    gap: 10px;
    margin-top: 10px;
    font-size: 14px;
}

.progress-text {
    color: var(--text);
}

.progress-percent {
    color: var(--primary-deep);
    font-weight: 700;
}

.folder-tree,
.folder-tree ul {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.folder-tree ul {
    padding-left: 18px;
    margin-top: 6px;
    border-left: 1px dashed #d1d5db;
}

.folder-tree li { margin: 6px 0; }

.tree-row {
    display: flex;
    align-items: center;
    gap: 8px;
    border-radius: 12px;
}

.tree-leaf { margin-left: 17px; }

.tree-group > ul { margin-top: 6px; }

.tree-summary {
    display: flex;
    align-items: center;
    list-style: none;
    cursor: pointer;
}

.tree-summary::-webkit-details-marker { display: none; }

.tree-summary::before {
    content: "▶";
    font-size: 11px;
    color: var(--muted);
    margin-right: 6px;
    transition: transform .18s ease;
}

.tree-group[open] > .tree-summary::before {
    transform: rotate(90deg);
}

.tree-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 9px 12px;
    border-radius: 12px;
    color: var(--text);
    flex: 1;
}

.tree-link:hover {
    background: #eff6ff;
    text-decoration: none;
}

.tree-link.active {
    background: var(--primary-soft);
    color: var(--primary-deep);
    font-weight: 700;
}

.tree-row:hover {
    background: #f8fafc;
}

.context-menu {
    position: fixed;
    z-index: 999;
    min-width: 220px;
    padding: 8px;
    border: 1px solid #dbe3f0;
    border-radius: 16px;
    background: #fff;
    box-shadow: var(--shadow-strong);
}

.context-menu-title {
    padding: 8px 10px;
    font-size: 12px;
    color: var(--muted);
    border-bottom: 1px solid #eef2f7;
    margin-bottom: 6px;
}

.context-menu-item {
    width: 100%;
    min-height: 40px;
    text-align: left;
    padding: 10px 12px;
    background: transparent;
    color: var(--text);
    border-radius: 10px;
    box-shadow: none;
}

.context-menu-item:hover {
    background: #eff6ff;
}

.context-menu-item.danger {
    color: #b91c1c;
}

.context-menu-item.danger:hover {
    background: #fef2f2;
}

.login-page,
.public-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.auth-shell,
.public-shell {
    width: min(1060px, 100%);
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 24px;
    align-items: center;
}

.wide-shell {
    grid-template-columns: 1fr;
}

.auth-side,
.public-brand {
    padding: 24px 8px;
}

.auth-side p,
.public-brand p {
    max-width: 520px;
    color: var(--muted);
    font-size: 16px;
    line-height: 1.7;
}

.login-card,
.public-card {
    width: 100%;
}

.public-card.wide {
    width: min(980px, 100%);
}

.info-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 12px;
    margin-bottom: 18px;
}

.info-item {
    padding: 14px 16px;
    border-radius: 14px;
    background: var(--card-soft);
    border: 1px solid var(--line);
}

.info-label {
    display: block;
    margin-bottom: 8px;
    color: var(--muted);
    font-size: 13px;
}

.preview-text-box {
    margin: 0;
    padding: 18px;
    border-radius: 16px;
    border: 1px solid var(--line);
    background: #0f172a;
    color: #e2e8f0;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 13px;
    line-height: 1.65;
    overflow: auto;
    white-space: pre-wrap;
    word-break: break-word;
    max-height: 70vh;
}

@media (max-width: 900px) {
    body:not(.login-page):not(.public-page) {
        min-height: 100vh;
        overflow-y: auto;
    }

    body.app-page {
        display: block;
    }

    .container,
    .app-container {
        height: auto;
        overflow: visible;
    }

    .admin-layout,
    .auth-shell,
    .public-shell {
        grid-template-columns: 1fr;
        height: auto;
        overflow: visible;
    }

    .sidebar-card,
    .content-stack,
    .app-container-scroll > :last-child {
        position: static;
        max-height: none;
        overflow: visible;
    }

    .page-hero {
        align-items: flex-start;
    }

    .filter-form,
    .grid.three {
        grid-template-columns: 1fr;
    }

    .stats-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 720px) {
    .topbar {
        align-items: flex-start;
        padding: 12px;
    }

    .container {
        padding: 12px;
    }

    .card,
    .sub-card {
        padding: 14px;
    }

    table {
        min-width: 640px;
    }

    .table-wrap {
        overflow-x: auto;
    }

    .actions-cell {
        min-width: 150px;
    }

    .progress-meta,
    .metric-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }
}