/* 交互方案对比：仅在 html[data-ui=a|b|c|d|e] 下生效，原版页面本身不改 */

.ui-picker {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 4000;
    height: 46px;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 0 12px;
    background: #1c1917;
    color: #e7e5e4;
    font-size: 13px;
    overflow-x: auto;
    white-space: nowrap;
}

.ui-picker-label {
    color: #a8a29e;
    margin-right: 6px;
    flex-shrink: 0;
}

.ui-picker button {
    border: 0;
    background: transparent;
    color: #d6d3d1;
    padding: 5px 10px;
    border-radius: 4px;
    font-size: 13px;
    line-height: 1.2;
}

.ui-picker button:hover {
    background: #44403c;
    color: #fff;
}

.ui-picker button.is-active {
    background: #fafaf9;
    color: #1c1917;
    font-weight: 600;
}

body {
    padding-top: 46px;
}

/* ========== 方案 A：侧栏工作台 ========== */
html[data-ui="a"] {
    --ink: #1c1917;
    --paper: #f4f1ea;
    --accent: #c45c26;
    --line: #e7e0d6;
}

html[data-ui="a"] body {
    background: var(--paper);
    color: var(--ink);
}

html[data-ui="a"] .navbar {
    position: fixed;
    top: 46px;
    left: 0;
    bottom: 0;
    width: 220px;
    z-index: 1030;
    display: flex;
    align-items: stretch;
    background: #1c1917 !important;
    padding: 16px 0;
}

html[data-ui="a"] .navbar .container {
    flex-direction: column;
    align-items: stretch;
    max-width: none;
    width: 100%;
    padding: 0 12px;
    height: 100%;
}

html[data-ui="a"] .navbar-brand {
    font-size: 1rem;
    letter-spacing: 0.04em;
    margin-bottom: 18px;
    padding: 0 8px;
}

html[data-ui="a"] .navbar-toggler {
    display: none;
}

html[data-ui="a"] #navbarNav {
    display: flex !important;
    flex-direction: column;
    flex: 1;
}

html[data-ui="a"] #navbarNav .navbar-nav {
    flex-direction: column;
}

html[data-ui="a"] #navbarNav .navbar-nav .nav-link {
    padding: 8px 10px;
    border-radius: 6px;
    color: #d6d3d1;
}

html[data-ui="a"] #navbarNav .navbar-nav .nav-link:hover {
    background: #292524;
    color: #fff;
}

html[data-ui="a"] .app-main {
    margin-left: 220px;
    padding: 20px 24px 40px;
}

html[data-ui="a"] .file-list,
html[data-ui="a"] .category-list,
html[data-ui="a"] .docs-page,
html[data-ui="a"] .container,
html[data-ui="a"] .container-fluid {
    max-width: none;
}

html[data-ui="a"] .file-list table,
html[data-ui="a"] .category-list table {
    font-size: 13px;
    box-shadow: none;
    border: 1px solid var(--line);
}

html[data-ui="a"] .file-list th,
html[data-ui="a"] .category-list th {
    background: #ebe6dc;
    font-size: 12px;
    padding: 8px 10px;
}

html[data-ui="a"] .file-list td,
html[data-ui="a"] .category-list td {
    padding: 8px 10px;
}

html[data-ui="a"] .file-actions {
    opacity: 0;
    transition: opacity .15s;
}

html[data-ui="a"] tr:hover .file-actions,
html[data-ui="a"] tr:focus-within .file-actions {
    opacity: 1;
}

html[data-ui="a"] .btn-upload,
html[data-ui="a"] .btn-add {
    background: var(--accent);
    border-color: var(--accent);
}

html[data-ui="a"] .search-input {
    border-color: var(--line);
    background: #fff;
}

@media (max-width: 960px) {
    html[data-ui="a"] .navbar {
        position: relative;
        top: 0;
        width: 100%;
        height: auto;
        bottom: auto;
    }

    html[data-ui="a"] .navbar .container,
    html[data-ui="a"] #navbarNav,
    html[data-ui="a"] #navbarNav .navbar-nav {
        flex-direction: row;
        flex-wrap: wrap;
    }

    html[data-ui="a"] .app-main {
        margin-left: 0;
        padding: 12px;
    }
}

/* ========== 方案 B：卡片墙 ========== */
html[data-ui="b"] {
    --accent: #2d6a4f;
    --paper: #f3eee6;
}

html[data-ui="b"] body {
    background: var(--paper);
}

html[data-ui="b"] .navbar {
    background: #1b4332 !important;
    box-shadow: none;
}

html[data-ui="b"] .app-main {
    padding: 20px 16px 48px;
}

html[data-ui="b"] .file-list,
html[data-ui="b"] .category-list {
    background: transparent;
    box-shadow: none;
    padding: 0;
}

html[data-ui="b"] .file-list table,
html[data-ui="b"] .category-list table {
    display: block;
    background: transparent;
    box-shadow: none;
    border: 0;
}

html[data-ui="b"] .file-list thead,
html[data-ui="b"] .category-list thead {
    display: none;
}

html[data-ui="b"] .file-list tbody,
html[data-ui="b"] .category-list tbody {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 14px;
}

html[data-ui="b"] .file-list tr,
html[data-ui="b"] .category-list tr {
    display: flex;
    flex-direction: column;
    background: #fff;
    border-radius: 10px;
    padding: 16px;
    border: 1px solid #e8e0d4;
    box-shadow: none;
}

html[data-ui="b"] .file-list td,
html[data-ui="b"] .category-list td {
    display: block;
    border: 0;
    padding: 4px 0;
}

html[data-ui="b"] .file-list .preview-image {
    width: 100% !important;
    height: 140px !important;
    border-radius: 8px;
}

html[data-ui="b"] .file-list .file-actions,
html[data-ui="b"] .bookmark-actions {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: .2s ease;
}

html[data-ui="b"] .file-list tr.is-open .file-actions,
html[data-ui="b"] .file-list tr:hover .file-actions,
html[data-ui="b"] .bookmark-item.is-open .bookmark-actions,
html[data-ui="b"] .bookmark-item:hover .bookmark-actions {
    max-height: 200px;
    opacity: 1;
}

html[data-ui="b"] #folderContent {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
    gap: 14px;
}

html[data-ui="b"] .bookmark-item {
    margin: 0;
    min-height: 150px;
    border-radius: 10px;
    border-color: #e8e0d4;
    box-shadow: none;
}

html[data-ui="b"] .bookmark-item:hover {
    transform: none;
    border-color: var(--accent);
}

html[data-ui="b"] .btn-upload,
html[data-ui="b"] .btn-primary {
    background: var(--accent);
    border-color: var(--accent);
}

html[data-ui="b"] .docs-card,
html[data-ui="b"] .card {
    border-radius: 10px;
    border: 1px solid #e8e0d4;
    box-shadow: none;
}

/* ========== 方案 C：左右分栏 ========== */
html[data-ui="c"] {
    --accent: #3f4f5f;
    --paper: #e8eef2;
}

html[data-ui="c"] body {
    background: var(--paper);
}

html[data-ui="c"] .navbar {
    background: #243039 !important;
}

html[data-ui="c"] .app-main {
    padding: 12px 12px 24px;
}

html[data-ui="c"] .ui-split {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: calc(100vh - 140px);
    border: 1px solid #cfd8df;
    background: #fff;
    border-radius: 6px;
    overflow: hidden;
}

html[data-ui="c"] .ui-split-nav {
    border-right: 1px solid #cfd8df;
    overflow: auto;
    background: #f7fafc;
}

html[data-ui="c"] .ui-split-nav-item {
    display: block;
    width: 100%;
    text-align: left;
    border: 0;
    border-bottom: 1px solid #edf2f6;
    background: transparent;
    padding: 10px 14px;
    font-size: 14px;
    color: #243039;
}

html[data-ui="c"] .ui-split-nav-item:hover {
    background: #eef3f7;
}

html[data-ui="c"] .ui-split-nav-item.is-active {
    background: #fff;
    box-shadow: inset 3px 0 0 #3f4f5f;
    font-weight: 600;
}

html[data-ui="c"] .ui-split-pane {
    padding: 20px 24px;
    overflow: auto;
}

html[data-ui="c"] .file-list.ui-has-split table tbody tr,
html[data-ui="c"] .category-list.ui-has-split table tbody tr {
    display: none;
}

html[data-ui="c"] .file-list.ui-has-split table tbody tr.ui-row-active,
html[data-ui="c"] .category-list.ui-has-split table tbody tr.ui-row-active {
    display: table-row;
}

html[data-ui="c"] .file-list.ui-has-split table,
html[data-ui="c"] .category-list.ui-has-split table {
    box-shadow: none;
    margin: 0;
}

html[data-ui="c"] .folder-sidebar {
    background: #f7fafc;
    height: calc(100vh - 110px);
}

html[data-ui="c"] .bookmark-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 10px 12px;
    margin: 0;
    border-radius: 0;
    border-left: 0;
    border-right: 0;
    border-top: 0;
}

html[data-ui="c"] .bookmark-item:hover {
    transform: none;
    background: #f7fafc;
    box-shadow: none;
}

html[data-ui="c"] .bookmark-title {
    margin: 0;
    flex: 1;
    font-size: 15px;
}

html[data-ui="c"] .bookmark-description {
    display: none;
}

@media (max-width: 800px) {
    html[data-ui="c"] .ui-split {
        grid-template-columns: 1fr;
    }
}

/* ========== 方案 D：抽屉操作 ========== */
html[data-ui="d"] {
    --accent: #9a3412;
    --paper: #fafafa;
}

html[data-ui="d"] body {
    background: var(--paper);
}

html[data-ui="d"] .navbar {
    background: #292524 !important;
}

html[data-ui="d"] .app-main {
    padding: 16px;
}

html[data-ui="d"] .modal-dialog {
    position: fixed !important;
    right: 0;
    top: 0;
    margin: 0 !important;
    height: 100%;
    max-width: 420px;
    width: min(420px, 100%);
    transform: translate(100%, 0) !important;
    transition: transform .22s ease;
}

html[data-ui="d"] .modal.show .modal-dialog {
    transform: translate(0, 0) !important;
}

html[data-ui="d"] .modal-content {
    height: 100% !important;
    width: 100% !important;
    margin: 0 !important;
    border-radius: 0 !important;
    border: 0 !important;
}

html[data-ui="d"] #addModal .modal-content,
html[data-ui="d"] #editModal .modal-content {
    position: fixed;
    right: 0;
    top: 0;
    bottom: 0;
    margin: 0 !important;
    width: min(400px, 100%) !important;
    height: 100%;
    border-radius: 0;
}

html[data-ui="d"] .file-list td.file-actions {
    display: none;
}

html[data-ui="d"] .file-list tr.is-open td.file-actions {
    display: table-cell;
}

html[data-ui="d"] .file-list tr.is-open {
    background: #fff7ed;
}

html[data-ui="d"] .bookmark-actions {
    display: none;
}

html[data-ui="d"] .bookmark-item.is-open .bookmark-actions {
    display: flex;
}

html[data-ui="d"] .ui-row-hint {
    font-size: 12px;
    color: #a8a29e;
}

html[data-ui="d"] .btn-upload,
html[data-ui="d"] .btn-primary {
    background: var(--accent);
    border-color: var(--accent);
}

/* ========== 方案 E：先选再看 ========== */
html[data-ui="e"] {
    --ink: #1f1b16;
    --paper: #f7f3eb;
    --accent: #b45309;
}

html[data-ui="e"] body {
    background: var(--paper);
    color: var(--ink);
}

html[data-ui="e"] .navbar {
    background: transparent !important;
    box-shadow: none;
    border-bottom: 1px solid #e8dfd0;
}

html[data-ui="e"] .navbar .navbar-brand,
html[data-ui="e"] .navbar .nav-link {
    color: var(--ink) !important;
}

html[data-ui="e"] .navbar.navbar-dark .navbar-toggler-icon {
    filter: invert(1);
}

html[data-ui="e"] .app-main {
    max-width: 880px;
    margin: 0 auto;
    padding: 32px 20px 64px;
}

html[data-ui="e"] .search-input {
    font-size: 18px;
    height: 48px;
    border-radius: 0;
    border: 0;
    border-bottom: 2px solid var(--ink);
    background: transparent;
}

html[data-ui="e"] .file-list,
html[data-ui="e"] .category-list,
html[data-ui="e"] .card,
html[data-ui="e"] .docs-card,
html[data-ui="e"] .docs-hero {
    background: transparent;
    box-shadow: none;
    border: 0;
}

html[data-ui="e"] .file-list table,
html[data-ui="e"] .category-list table {
    box-shadow: none;
    background: transparent;
}

html[data-ui="e"] .file-list th:nth-child(n+5):not(:last-child),
html[data-ui="e"] .file-list td:nth-child(n+5):not(:last-child) {
    display: none;
}

html[data-ui="e"] .file-actions {
    opacity: 0;
}

html[data-ui="e"] tr:hover .file-actions,
html[data-ui="e"] tr:focus-within .file-actions {
    opacity: 1;
}

html[data-ui="e"] .ui-folder-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 24px;
}

html[data-ui="e"] .ui-chip {
    border: 1px solid #d6cbb8;
    background: #fff;
    color: var(--ink);
    padding: 8px 14px;
    border-radius: 999px;
    font-size: 14px;
}

html[data-ui="e"] .ui-chip.is-active {
    background: var(--ink);
    color: #f7f3eb;
    border-color: var(--ink);
}

html[data-ui="e"] .ui-e-hide-sidebar {
    display: none !important;
}

html[data-ui="e"] h1,
html[data-ui="e"] h2,
html[data-ui="e"] h3,
html[data-ui="e"] .navbar-brand {
    font-family: "Songti SC", "Noto Serif SC", Georgia, serif;
    font-weight: 600;
}

html[data-ui="e"] .btn-upload,
html[data-ui="e"] .btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    border-radius: 2px;
}

html[data-ui="e"] .login .card,
html[data-ui="e"] form .card {
    background: transparent;
}

html[data-ui="e"] .docs-page {
    max-width: none;
}