:root {
    --bg: #fff;
    --bg-secondary: #f5f5f5;
    --text: #1a1a1a;
    --text-secondary: #666;
    --border: #e0e0e0;
    --accent: #2563eb;
    --accent-hover: #1d4ed8;
    --danger: #dc2626;
    --success: #16a34a;
    --shadow: 0 1px 3px rgba(0,0,0,0.1);
    --radius: 8px;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #121212;
        --bg-secondary: #1e1e1e;
        --text: #e0e0e0;
        --text-secondary: #999;
        --border: #333;
        --shadow: 0 1px 3px rgba(0,0,0,0.3);
    }
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

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

.container { max-width: 1400px; margin: 0 auto; padding: 20px; }

.header { margin-bottom: 30px; }
.header h1 { font-size: 2rem; font-weight: 600; }

.breadcrumbs { display: flex; gap: 8px; align-items: center; margin-bottom: 10px; font-size: 0.9rem; flex-wrap: wrap; }
.breadcrumbs .separator { color: var(--text-secondary); }

.folders-section, .photos-section { margin-bottom: 40px; }
.folders-section h2, .photos-section h2 { font-size: 1.2rem; margin-bottom: 15px; color: var(--text-secondary); }

.folders-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 20px;
}

.folder-card {
    display: block;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
    text-decoration: none;
    color: inherit;
}

.folder-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); text-decoration: none; }

.folder-cover {
    aspect-ratio: 4/3;
    background: var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
}

.folder-cover img { width: 100%; height: 100%; object-fit: cover; }

.folder-icon {
    width: 48px;
    height: 48px;
    color: var(--text-secondary);
}

.folder-info { padding: 12px; }
.folder-name { display: block; font-weight: 500; margin-bottom: 4px; word-break: break-word; }
.folder-count { font-size: 0.85rem; color: var(--text-secondary); }

.masonry {
    columns: 4 280px;
    column-gap: 15px;
}

.photo-item {
    display: block;
    break-inside: avoid;
    margin-bottom: 15px;
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--bg-secondary);
    position: relative;
}

.photo-item img {
    width: 100%;
    display: block;
    transition: opacity 0.3s, filter 0.3s;
}

.photo-item img.loading { opacity: 0.5; filter: blur(10px); }

.viewer-container {
    min-height: 100vh;
    max-height: 100vh;
    display: flex;
    flex-direction: column;
    background: #0a0a0a;
    overflow: hidden;
}

.viewer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    background: rgba(0,0,0,0.9);
    color: #fff;
    gap: 15px;
    flex-shrink: 0;
    z-index: 20;
    height: 60px;
    box-sizing: border-box;
}

.viewer-header .breadcrumbs { margin-bottom: 0; }
.viewer-header .breadcrumbs a { color: rgba(255,255,255,0.8); }
.viewer-header .breadcrumbs a:hover { color: #fff; }

.viewer-header-left {
    display: flex;
    align-items: center;
    gap: 15px;
    flex: 1;
    min-width: 0;
}

.viewer-header-right {
    display: flex;
    align-items: center;
    gap: 5px;
    flex-shrink: 0;
}

.viewer-header-right .btn-icon {
    color: rgba(255,255,255,0.7);
    padding: 8px;
    border-radius: var(--radius);
}

.viewer-header-right .btn-icon:hover {
    color: #fff;
    background: rgba(255,255,255,0.1);
}

.viewer-header-right .btn-icon svg {
    width: 20px;
    height: 20px;
}

.photo-counter {
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
    white-space: nowrap;
}

.viewer-body {
    flex: 1;
    display: flex;
    min-height: 0;
    overflow: hidden;
}

.viewer-main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    min-width: 0;
    padding: 20px;
    overflow: hidden;
}

.viewer-image {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.viewer-image img {
    max-width: 100%;
    max-height: calc(100vh - 100px);
    object-fit: contain;
    cursor: zoom-in;
    transition: transform 0.1s ease-out;
    transform-origin: center center;
}

.viewer-image img.zoomed {
    max-width: none;
    max-height: none;
    cursor: grab;
}

.viewer-nav {
    position: absolute;
    inset: 0;
    display: flex;
    justify-content: space-between;
    align-items: stretch;
    pointer-events: none;
    z-index: 10;
    transition: opacity 0.2s;
}

.nav-btn {
    width: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255,255,255,0.6);
    background: transparent;
    opacity: 0;
    transition: opacity 0.2s, background 0.2s, color 0.2s;
    text-decoration: none;
    pointer-events: none;
}

a.nav-btn {
    pointer-events: auto;
}

a.nav-btn:hover {
    background: rgba(0,0,0,0.5);
    color: #fff;
    opacity: 1;
    text-decoration: none;
}

.viewer-body:hover a.nav-btn {
    opacity: 1;
}

.nav-btn svg { width: 40px; height: 40px; }

.viewer-sidebar {
    width: 320px;
    background: var(--bg);
    overflow-y: auto;
    flex-shrink: 0;
    border-left: 1px solid var(--border);
    max-height: calc(100vh - 60px);
}

.sidebar-toggle {
    display: none;
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--accent);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    z-index: 101;
    align-items: center;
    justify-content: center;
    color: #fff;
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.sidebar-toggle svg { width: 24px; height: 24px; }

.sidebar-content { padding: 20px; }
.sidebar-content h2 {
    margin-bottom: 15px;
    font-size: 1.2rem;
    word-break: break-word;
    line-height: 1.4;
}
.sidebar-content h3 {
    margin: 25px 0 12px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.description { color: var(--text-secondary); margin-bottom: 15px; }

.note {
    background: var(--bg-secondary);
    padding: 12px;
    border-radius: var(--radius);
    margin-bottom: 15px;
}

.exif-list { display: grid; grid-template-columns: auto 1fr; gap: 6px 15px; }
.exif-list dt { color: var(--text-secondary); font-size: 0.9rem; }
.exif-list dd { font-size: 0.9rem; word-break: break-word; }

.more-exif summary {
    cursor: pointer;
    color: var(--accent);
    margin: 15px 0 10px;
}

.btn-icon {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    opacity: 0.7;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius);
    transition: opacity 0.2s, background 0.2s;
}

.btn-icon:hover { opacity: 1; background: rgba(255,255,255,0.1); }
.btn-icon svg { width: 20px; height: 20px; }
.close-btn { color: #fff; }
.close-btn svg { width: 24px; height: 24px; }

.admin-container { display: flex; min-height: 100vh; }

.admin-nav {
    width: 220px;
    background: var(--bg-secondary);
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 5px;
    flex-shrink: 0;
}

.admin-nav a {
    padding: 12px 15px;
    border-radius: var(--radius);
    color: var(--text);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: background 0.2s;
}

.admin-nav a svg { width: 18px; height: 18px; opacity: 0.7; }
.admin-nav a:hover { background: var(--border); text-decoration: none; }
.admin-nav a.active { background: var(--accent); color: #fff; }
.admin-nav a.active svg { opacity: 1; }

.admin-main { flex: 1; padding: 30px; overflow-x: auto; min-width: 0; }
.admin-main h1 { margin-bottom: 25px; }

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    gap: 15px;
    flex-wrap: wrap;
}

.page-header .count { color: var(--text-secondary); }

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.95rem;
    color: var(--text);
    text-decoration: none;
    transition: background 0.2s;
    white-space: nowrap;
}

.btn svg { width: 16px; height: 16px; }
.btn:hover { background: var(--border); text-decoration: none; }
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); }
.btn-secondary { background: transparent; }
.btn-danger { background: var(--danger); color: #fff; border-color: var(--danger); }
.btn-danger:hover { background: #b91c1c; }
.btn-small { padding: 6px 12px; font-size: 0.85rem; }

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--bg-secondary);
    padding: 20px;
    border-radius: var(--radius);
    text-align: center;
}

.stat-value { display: block; font-size: 2rem; font-weight: 600; }
.stat-label { color: var(--text-secondary); }

.actions-section, .upload-section { margin-bottom: 30px; }
.actions-section h2, .upload-section h2 { margin-bottom: 15px; font-size: 1.1rem; }

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

.upload-form { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.upload-form input[type="file"] { flex: 1; min-width: 200px; }
.upload-form select {
    padding: 10px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
}

.folders-table-container { overflow-x: auto; }

.admin-table {
    width: 100%;
    border-collapse: collapse;
    min-width: 600px;
}

.admin-table th, .admin-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.admin-table th { background: var(--bg-secondary); font-weight: 500; white-space: nowrap; }

.preview-cell { width: 60px; }
.table-preview { width: 50px; height: 50px; object-fit: cover; border-radius: 4px; display: block; }
.no-preview {
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--border);
    border-radius: 4px;
}
.no-preview svg { width: 24px; height: 24px; color: var(--text-secondary); }
.path-cell { font-family: monospace; font-size: 0.85rem; color: var(--text-secondary); }
.actions-cell { white-space: nowrap; }
.actions-cell .btn { margin-right: 5px; margin-bottom: 5px; }

.admin-dialog {
    border: none;
    border-radius: var(--radius);
    padding: 25px;
    background: var(--bg);
    color: var(--text);
    max-width: 500px;
    width: calc(100% - 40px);
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.admin-dialog::backdrop { background: rgba(0,0,0,0.5); }
.admin-dialog h2 { margin-bottom: 20px; }

.form-group { margin-bottom: 15px; }
.form-group label { display: block; margin-bottom: 5px; font-weight: 500; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg);
    color: var(--text);
    font-size: 1rem;
}

.form-group input:disabled { opacity: 0.6; }
.form-group textarea { resize: vertical; font-family: inherit; min-height: 80px; }
.form-group small { display: block; margin-top: 5px; color: var(--text-secondary); font-size: 0.85rem; }
.dialog-actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 20px; }

.filters { margin-bottom: 20px; }
.filter-form { display: flex; gap: 15px; align-items: center; flex-wrap: wrap; }
.filter-form select {
    padding: 8px 12px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
}
.checkbox-label { display: flex; align-items: center; gap: 5px; cursor: pointer; }

.search-box {
    display: flex;
    gap: 8px;
    flex: 1;
    max-width: 300px;
}

.search-box input {
    flex: 1;
    padding: 8px 12px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
}

.bulk-actions {
    display: none;
    gap: 10px;
    align-items: center;
    padding: 10px 15px;
    background: var(--accent);
    color: #fff;
    border-radius: var(--radius);
    margin-bottom: 15px;
}

.bulk-actions .btn {
    background: rgba(255,255,255,0.2);
    border-color: transparent;
    color: #fff;
}

.bulk-actions .btn:hover {
    background: rgba(255,255,255,0.3);
}

.photos-admin-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 15px;
}

.photo-admin-card {
    background: var(--bg-secondary);
    border-radius: var(--radius);
    overflow: hidden;
    transition: opacity 0.2s;
    position: relative;
}

.photo-admin-card.hidden-photo { opacity: 0.5; }
.photo-admin-card img { width: 100%; aspect-ratio: 1; object-fit: cover; display: block; }

.photo-select-wrapper {
    position: absolute;
    top: 8px;
    left: 8px;
    z-index: 5;
}

.photo-select {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--accent);
}

.photo-admin-info {
    padding: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 8px;
}

.photo-admin-info .filename {
    font-size: 0.85rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    min-width: 0;
}

.photo-admin-actions { display: flex; gap: 2px; flex-shrink: 0; }
.photo-admin-actions .btn-icon { padding: 6px; }
.photo-admin-actions .btn-icon svg { width: 16px; height: 16px; }

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.page-info { color: var(--text-secondary); }

.photo-edit-layout {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 30px;
    align-items: start;
}

.photo-preview { text-align: center; }
.photo-preview img { max-width: 100%; border-radius: var(--radius); margin-bottom: 15px; }
.photo-preview-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }

.edit-form { background: var(--bg-secondary); padding: 25px; border-radius: var(--radius); }
.edit-form h3 { margin: 20px 0 15px; font-size: 1rem; color: var(--text-secondary); }
.edit-form h3:first-child { margin-top: 0; }

.meta-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

.exif-panel {
    background: var(--bg-secondary);
    padding: 20px;
    border-radius: var(--radius);
    font-size: 0.9rem;
    margin-top: 20px;
}

.exif-panel h3 { margin-bottom: 10px; font-size: 1rem; }
.exif-panel h3:not(:first-child) { margin-top: 20px; }

.cover-section { margin-top: 30px; }
.cover-section h2 { margin-bottom: 15px; }

.cover-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    gap: 10px;
    margin-bottom: 15px;
}

.cover-option {
    cursor: pointer;
    border: 3px solid transparent;
    border-radius: var(--radius);
    overflow: hidden;
    transition: border-color 0.2s;
}
.cover-option:hover { border-color: var(--accent); }
.cover-option.selected { border-color: var(--success); }
.cover-option img { width: 100%; aspect-ratio: 1; object-fit: cover; display: block; }

@media (max-width: 1200px) {
    .photo-edit-layout {
        grid-template-columns: 300px 1fr;
    }
}

@media (max-width: 900px) {
    .viewer-sidebar {
        position: fixed;
        right: 0;
        top: 0;
        bottom: 0;
        transform: translateX(100%);
        z-index: 100;
        box-shadow: -5px 0 20px rgba(0,0,0,0.3);
        width: 300px;
        max-width: calc(100% - 60px);
    }
    .viewer-sidebar.open { transform: translateX(0); }
    .sidebar-toggle { display: flex; }

    .photo-edit-layout {
        grid-template-columns: 1fr;
    }
    .photo-preview img { max-width: 350px; }

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

@media (max-width: 768px) {
    .admin-container { flex-direction: column; }
    .admin-nav {
        width: 100%;
        flex-direction: row;
        overflow-x: auto;
        padding: 10px;
        gap: 5px;
    }
    .admin-nav a { padding: 10px 12px; white-space: nowrap; }
    .admin-main { padding: 20px; }
    .masonry { columns: 2 150px; }
    .folders-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 15px; }
    .viewer-header { padding: 10px 15px; }
    .nav-btn { width: 50px; }
    .nav-btn svg { width: 24px; height: 24px; }
}

@media (max-width: 480px) {
    .container { padding: 15px; }
    .header h1 { font-size: 1.5rem; }
    .masonry { columns: 1; }
    .folders-grid { grid-template-columns: 1fr 1fr; gap: 10px; }
    .photos-admin-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .btn { padding: 8px 14px; font-size: 0.9rem; }
}

.folder-tree-container {
    background: var(--bg-secondary);
    border-radius: var(--radius);
    overflow: hidden;
}

.folder-tree {
    padding: 10px 0;
}

.empty-tree {
    padding: 40px 20px;
    text-align: center;
    color: var(--text-secondary);
}

.tree-item {
    border-bottom: 1px solid var(--border);
}

.tree-item:last-child {
    border-bottom: none;
}

.tree-item.collapsed > .tree-item {
    display: none;
}

.tree-row {
    display: flex;
    align-items: center;
    padding: 10px 15px;
    padding-left: calc(15px + var(--depth, 0) * 28px);
    gap: 10px;
    transition: background 0.15s;
}

.tree-row:hover {
    background: var(--border);
}

.tree-indent {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.tree-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: transform 0.2s, background 0.15s;
}

.tree-toggle:hover {
    background: var(--bg);
    color: var(--text);
}

.tree-toggle svg {
    width: 16px;
    height: 16px;
}

.tree-toggle.expanded {
    transform: rotate(90deg);
}

.tree-toggle-placeholder {
    width: 24px;
    height: 24px;
}

.tree-icon {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.tree-icon svg {
    width: 20px;
    height: 20px;
}

.tree-preview {
    width: 32px;
    height: 32px;
    object-fit: cover;
    border-radius: 4px;
}

.tree-content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.tree-name {
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tree-meta {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.tree-path {
    flex: 0 0 200px;
    font-family: monospace;
    font-size: 0.8rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.tree-actions {
    display: flex;
    gap: 5px;
    flex-shrink: 0;
}

@media (max-width: 900px) {
    .tree-path {
        display: none;
    }

    .tree-row {
        padding-left: calc(10px + var(--depth, 0) * 20px);
    }
}

@media (max-width: 600px) {
    .tree-content {
        flex: 1;
    }

    .tree-actions {
        flex-wrap: wrap;
    }

    .tree-actions .btn {
        padding: 4px 8px;
        font-size: 0.8rem;
    }
}

.tree-item[data-depth="1"] .tree-row::before,
.tree-item[data-depth="2"] .tree-row::before,
.tree-item[data-depth="3"] .tree-row::before,
.tree-item[data-depth="4"] .tree-row::before,
.tree-item[data-depth="5"] .tree-row::before {
    content: '';
    position: absolute;
    left: calc(26px + (var(--depth, 0) - 1) * 28px);
    top: 0;
    bottom: 50%;
    width: 1px;
    background: var(--border);
}

.tree-item {
    position: relative;
}

.tree-item[data-depth="0"] { --depth: 0; }
.tree-item[data-depth="1"] { --depth: 1; }
.tree-item[data-depth="2"] { --depth: 2; }
.tree-item[data-depth="3"] { --depth: 3; }
.tree-item[data-depth="4"] { --depth: 4; }
.tree-item[data-depth="5"] { --depth: 5; }
.tree-item[data-depth="6"] { --depth: 6; }
.tree-item[data-depth="7"] { --depth: 7; }
.tree-item[data-depth="8"] { --depth: 8; }
.tree-item[data-depth="9"] { --depth: 9; }
.tree-item[data-depth="10"] { --depth: 10; }

.tree-item.collapsed + .tree-item[data-depth]:not([data-depth="0"]) {
    display: none;
}

.tree-item.hiding {
    display: none;
}

.index-page {
    background: var(--bg);
}

.index-container {
    max-width: 1400px;
    margin: 0 auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.index-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
    position: sticky;
    top: 0;
    z-index: 10;
    gap: 15px;
    flex-wrap: wrap;
}

.index-header h1 {
    font-size: 1.3rem;
    font-weight: 600;
    margin: 0;
}

.index-header .breadcrumbs {
    margin: 0;
    font-size: 1rem;
}

.index-header-controls {
    display: flex;
    align-items: center;
    gap: 15px;
}

.sort-control {
    display: flex;
    align-items: center;
    gap: 8px;
}

.sort-control label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.sort-control select {
    padding: 6px 10px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
    font-size: 0.9rem;
}

.view-toggle {
    display: flex;
    gap: 5px;
    background: var(--bg);
    padding: 3px;
    border-radius: var(--radius);
}

.view-btn {
    background: none;
    border: none;
    padding: 6px 10px;
    cursor: pointer;
    border-radius: calc(var(--radius) - 2px);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
}

.view-btn svg {
    width: 18px;
    height: 18px;
}

.view-btn:hover {
    color: var(--text);
}

.view-btn.active {
    background: var(--accent);
    color: #fff;
}

.index-content {
    flex: 1;
    padding: 0;
}

.index-footer {
    padding: 15px 20px;
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.file-list {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.file-list th {
    text-align: left;
    padding: 12px 15px;
    background: var(--bg-secondary);
    font-weight: 500;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 54px;
    z-index: 5;
    user-select: none;
}

.file-list th.sortable {
    cursor: pointer;
}

.file-list th.sortable:hover {
    background: var(--border);
}

.file-list th.sortable::after {
    content: '';
    display: inline-block;
    margin-left: 5px;
    opacity: 0.3;
}

.file-list th.sort-asc::after {
    content: '▲';
    opacity: 1;
}

.file-list th.sort-desc::after {
    content: '▼';
    opacity: 1;
}

.file-list td {
    padding: 8px 15px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

.file-list tr:hover {
    background: var(--bg-secondary);
}

.file-list .col-icon {
    width: 50px;
    text-align: center;
    padding: 5px 10px;
}

.file-list .col-icon svg {
    width: 20px;
    height: 20px;
    color: var(--text-secondary);
}

.file-list .col-name {
    min-width: 200px;
}

.file-list .col-name a {
    color: var(--text);
    font-weight: 500;
}

.file-list .col-name a:hover {
    color: var(--accent);
}

.file-list .col-size {
    width: 100px;
    text-align: right;
    color: var(--text-secondary);
    font-family: monospace;
}

.file-list .col-date {
    width: 150px;
    color: var(--text-secondary);
    font-family: monospace;
    font-size: 0.85rem;
}

.list-thumb {
    width: 36px;
    height: 36px;
    object-fit: cover;
    border-radius: 4px;
    display: block;
}

.item-meta {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: normal;
}

.folder-row .col-icon svg {
    color: #f0c36d;
}

.parent-row {
    background: var(--bg-secondary);
}

.grid-section {
    padding: 20px;
}

.grid-section h2 {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.empty-state {
    padding: 60px 20px;
    text-align: center;
    color: var(--text-secondary);
}

.empty-state a {
    color: var(--accent);
}

.path-value {
    font-family: monospace;
    font-size: 0.85rem;
    word-break: break-all;
}

@media (max-width: 768px) {
    .file-list .col-date {
        display: none;
    }

    .file-list th {
        top: 50px;
    }

    .index-header {
        padding: 10px 15px;
    }

    .index-header-controls {
        width: 100%;
        justify-content: space-between;
    }
}

@media (max-width: 480px) {
    .file-list .col-size {
        display: none;
    }

    .item-meta {
        display: none;
    }

    .sort-control label {
        display: none;
    }
}

.upload-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 40px 20px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    background: var(--bg);
}

.upload-zone:hover,
.upload-zone.dragover {
    border-color: var(--accent);
    background: rgba(37, 99, 235, 0.05);
}

.upload-zone-content svg {
    width: 48px;
    height: 48px;
    color: var(--text-secondary);
    margin-bottom: 15px;
}

.upload-zone-content p {
    margin: 5px 0;
    color: var(--text-secondary);
}

.upload-hint {
    font-size: 0.85rem;
    opacity: 0.7;
}

.upload-options {
    margin-top: 15px;
    display: flex;
    gap: 15px;
    align-items: center;
}

.upload-options label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.upload-options select {
    padding: 8px 12px;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    background: var(--bg);
    color: var(--text);
}

.upload-queue {
    margin-top: 20px;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    padding: 15px;
}

.upload-queue h3 {
    margin: 0 0 15px;
    font-size: 1rem;
}

.queue-list {
    max-height: 300px;
    overflow-y: auto;
}

.queue-item {
    display: grid;
    grid-template-columns: 1fr 150px 100px;
    gap: 15px;
    align-items: center;
    padding: 10px;
    background: var(--bg);
    border-radius: var(--radius);
    margin-bottom: 8px;
}

.queue-item.complete {
    opacity: 0.7;
}

.queue-item.error {
    background: rgba(220, 38, 38, 0.1);
}

.queue-item-name {
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.queue-item-size {
    font-size: 0.8rem;
    color: var(--text-secondary);
    display: block;
}

.queue-item-progress {
    display: flex;
    align-items: center;
    gap: 10px;
}

.progress-bar {
    flex: 1;
    height: 6px;
    background: var(--border);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: var(--accent);
    transition: width 0.2s;
}

.progress-text {
    font-size: 0.8rem;
    width: 40px;
    text-align: right;
    font-family: monospace;
}

.queue-item-status {
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.remove-btn {
    padding: 4px;
}

.remove-btn svg {
    width: 14px;
    height: 14px;
}

.upload-summary {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--border);
}

.upload-summary #upload-status {
    flex: 1;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

@media (max-width: 600px) {
    .queue-item {
        grid-template-columns: 1fr;
        gap: 8px;
    }
}

.sidebar-actions {
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.sidebar-actions .btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 16px;
    width: 100%;
    box-sizing: border-box;
}

.sidebar-actions .btn svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.sidebar-content {
    padding: 20px;
    padding-bottom: 30px;
}

@media (max-width: 1000px) {
    .viewer-sidebar {
        position: fixed;
        right: 0;
        top: 0;
        bottom: 0;
        transform: translateX(100%);
        z-index: 100;
        box-shadow: -5px 0 20px rgba(0,0,0,0.3);
        width: 300px;
        max-width: calc(100% - 60px);
        max-height: 100vh;
        border-left: none;
    }
    .viewer-sidebar.open {
        transform: translateX(0);
    }
    .sidebar-toggle {
        display: flex;
    }
    .viewer-image img {
        max-height: calc(100vh - 80px);
    }
}

.header-nav-btn svg {
    width: 20px;
    height: 20px;
}

.folder-cover {
    aspect-ratio: 4/3;
    background: var(--border);
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 2px;
    overflow: hidden;
}

.folder-cover.single {
    display: flex;
    align-items: center;
    justify-content: center;
}

.folder-cover.single img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.folder-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.folder-cover.cols-1 {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
}

.folder-cover.cols-2 {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr;
}

.folder-cover.cols-3 img:first-child {
    grid-row: span 2;
}