:root {
    --bg-color: #f5f5f5;
    --container-bg: white;
    --text-color: #2c3e50;
    --border-color: #eee;
    --hover-bg: #f8f9fa;
    --secondary-text: #6c757d;
    --link-color: #007bff;
    --folder-color: #ffc107;
    --file-color: #6c757d;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --icon-bg: #f0f0f0;
}

[data-theme="dark"] {
    --bg-color: #1a1a1a;
    --container-bg: #2d2d2d;
    --text-color: #e1e1e1;
    --border-color: #404040;
    --hover-bg: #363636;
    --secondary-text: #a0a0a0;
    --link-color: #66b3ff;
    --folder-color: #ffd54f;
    --file-color: #b0b0b0;
    --shadow-color: rgba(0, 0, 0, 0.3);
    --icon-bg: #3a3a3a;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    padding: 20px;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    background-color: var(--container-bg);
    border-radius: 8px;
    box-shadow: 0 2px 4px var(--shadow-color);
    padding: 20px;
    width: calc(100% - 40px);
    max-width: 1200px;
    margin: 0 auto;
}

h1 {
    color: var(--text-color);
    margin-bottom: 30px;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

h1 > div {
    display: flex;
    gap: 8px;
    align-items: center;
}

/* 通用按钮样式 */
.btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    font-size: 1em;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.btn:hover {
    background-color: var(--hover-bg);
    transform: translateY(-1px);
}

.btn:active {
    transform: translateY(0);
}

/* 导航栏按钮 */
.nav-btn {
    color: var(--secondary-text);
    font-size: 1.1em;
    padding: 8px 10px;
}

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

/* 兼容旧的类名 */
.theme-toggle,
.view-toggle {
    background: none;
    border: none;
    color: var(--secondary-text);
    cursor: pointer;
    padding: 8px 10px;
    border-radius: 6px;
    font-size: 1.1em;
    transition: all 0.2s ease;
}

.theme-toggle:hover,
.view-toggle:hover {
    background-color: var(--hover-bg);
    color: var(--text-color);
    transform: translateY(-1px);
}

.theme-toggle:active,
.view-toggle:active {
    transform: translateY(0);
}

/* 导航栏删除按钮特殊样式 */
.view-toggle[style*="color: #dc3545"]:hover {
    color: #c82333 !important;
    background-color: rgba(220, 53, 69, 0.1);
}

/* Grid view styles */
.grid-container {
    display: none;
    margin-top: 20px;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
}

.grid-card {
    background: var(--container-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px;
    text-align: center;
    box-shadow: 0 1px 2px var(--shadow-color);
}

.grid-checkbox {
    text-align: left;
    margin-bottom: 8px;
}

.grid-checkbox input {
    transform: scale(1.05);
    accent-color: var(--link-color);
}

.grid-thumb {
    width: 100%;
    height: 100px;
    object-fit: cover;
    border-radius: 6px;
    margin-bottom: 8px;
    background-color: var(--icon-bg);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.grid-thumb:hover {
    transform: scale(1.02);
    box-shadow: 0 2px 8px var(--shadow-color);
}

/* 网格卡片中的图标容器 */
.grid-icon {
    width: 100%;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 8px;
    border-radius: 6px;
    background-color: var(--icon-bg);
    cursor: pointer;
    transition: transform 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease;
}

.grid-icon:hover {
    transform: scale(1.02);
    background-color: var(--hover-bg);
    box-shadow: 0 2px 8px var(--shadow-color);
}

.grid-icon i {
    font-size: 64px;
}

.grid-name {
    display: block;
    font-size: 0.95em;
    color: var(--text-color);
    margin-bottom: 6px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 网格卡片操作按钮 */
.grid-actions {
    display: flex;
    gap: 4px;
    justify-content: center;
    margin-top: 8px;
}

.grid-action-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px 6px;
    border-radius: 4px;
    font-size: 0.85em;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 3px;
}

.grid-action-btn.preview {
    color: var(--link-color);
}

.grid-action-btn.preview:hover {
    background-color: rgba(0, 123, 255, 0.1);
}

.grid-action-btn.download {
    color: #28a745;
}

.grid-action-btn.download:hover {
    background-color: rgba(40, 167, 69, 0.1);
}

.grid-action-btn.delete {
    color: #dc3545;
}

.grid-action-btn.delete:hover {
    background-color: rgba(220, 53, 69, 0.1);
}

/* Toggle visibility based on data-view on root */
:root[data-view="grid"] .files-table {
    display: none;
}

:root[data-view="grid"] .grid-container {
    display: grid;
}

.files-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.checkbox-col {
    width: 48px;
    text-align: center;
}

.checkbox-col input {
    transform: scale(1.05);
    accent-color: var(--link-color);
}

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

.files-table th {
    background-color: var(--hover-bg);
    color: var(--text-color);
    font-weight: 600;
}

.files-table tr:hover {
    background-color: var(--hover-bg);
}

.file-icon {
    margin-right: 8px;
}

.folder {
    color: var(--folder-color);
}

.file {
    color: var(--file-color);
}

a {
    color: var(--link-color);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.file-size {
    color: var(--secondary-text);
    font-size: 0.9em;
}

.last-modified {
    color: var(--secondary-text);
    font-size: 0.9em;
}

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

.breadcrumb {
    margin-bottom: 12px;
    font-size: 0.95em;
    color: var(--secondary-text);
    background-color: var(--container-bg);
    padding: 8px 12px;
    border-radius: 4px;
}

/* 页脚样式 */
.site-footer {
    margin-top: 20px;
    text-align: center;
    color: var(--secondary-text);
    font-size: 0.9em;
    padding: 14px 12px;
}

.site-footer a {
    color: var(--link-color);
    text-decoration: none;
    margin: 0 6px;
}

.site-footer a:hover {
    text-decoration: underline;
}

@media (max-width: 600px) {
    .site-footer {
        font-size: 0.85em;
        padding: 12px 8px;
    }
}

/* 文件上传输入框 */
.upload-input {
    display: none;
}

/* 删除按钮 */
.delete-btn {
    background: none;
    border: none;
    color: #dc3545;
    cursor: pointer;
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 0.9em;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.delete-btn:hover {
    background-color: rgba(220, 53, 69, 0.1);
    color: #c82333;
    transform: translateY(-1px);
}

.delete-btn:active {
    transform: translateY(0);
}

/* 操作链接按钮 */
.action-link {
    color: var(--link-color);
    text-decoration: none;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.action-link:hover {
    background-color: var(--hover-bg);
    text-decoration: none;
}

/* 预览按钮（button标签样式） */
button.action-link {
    border: none;
    background: none;
    cursor: pointer;
    font-size: 0.9em;
    font-family: inherit;
}

/* 下载按钮 */
.download-btn {
    background: none;
    border: none;
    color: #28a745;
    cursor: pointer;
    padding: 6px 10px;
    border-radius: 6px;
    font-size: 0.9em;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.download-btn:hover {
    background-color: rgba(40, 167, 69, 0.1);
    color: #218838;
    transform: translateY(-1px);
}

.download-btn:active {
    transform: translateY(0);
}

/* 预览模态框 */
.preview-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.preview-modal.show {
    display: flex;
    opacity: 1;
    justify-content: center;
    align-items: center;
}

.preview-container {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.preview-content {
    max-width: 100%;
    max-height: 85vh;
    object-fit: contain;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.preview-controls {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    gap: 10px;
    z-index: 1001;
}

.preview-btn {
    background-color: rgba(255, 255, 255, 0.9);
    border: none;
    color: #333;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2em;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.preview-btn:hover {
    background-color: white;
    transform: scale(1.1);
}

.preview-info {
    margin-top: 15px;
    color: white;
    text-align: center;
    font-size: 0.95em;
    background-color: rgba(0, 0, 0, 0.7);
    padding: 10px 20px;
    border-radius: 20px;
    max-width: 80%;
    word-break: break-all;
}

.preview-loading {
    color: white;
    font-size: 1.2em;
    text-align: center;
}

.preview-error {
    color: #ff6b6b;
    font-size: 1.1em;
    text-align: center;
    padding: 20px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 8px;
}

video.preview-content {
    background-color: #000;
}

/* 音频预览样式 */
.preview-audio-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 12px;
    min-width: 400px;
}

.preview-audio {
    width: 100%;
    max-width: 500px;
    margin-top: 20px;
}

/* 文本预览样式 */
.preview-text {
    background-color: rgba(255, 255, 255, 0.95);
    color: #2c3e50;
    padding: 20px;
    border-radius: 8px;
    max-width: 90vw;
    max-height: 85vh;
    overflow: auto;
    font-family: "Courier New", Courier, monospace;
    font-size: 14px;
    line-height: 1.6;
    white-space: pre-wrap;
    word-wrap: break-word;
}

[data-theme="dark"] .preview-text {
    background-color: rgba(45, 45, 45, 0.95);
    color: #e1e1e1;
}

/* 不支持预览的文件样式 */
.preview-unsupported {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 40px;
    background-color: rgba(0, 0, 0, 0.7);
    border-radius: 12px;
    color: white;
    text-align: center;
    min-width: 400px;
}

.preview-unsupported p {
    margin: 0;
}

.preview-unsupported .action-link {
    background-color: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
}

.preview-unsupported .action-link:hover {
    background-color: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

@media (max-width: 768px) {
    .preview-container {
        max-width: 95%;
    }

    .preview-controls {
        top: 10px;
        right: 10px;
    }

    .preview-btn {
        width: 35px;
        height: 35px;
        font-size: 1em;
    }

    .preview-info {
        font-size: 0.85em;
        padding: 8px 15px;
    }

    .preview-audio-wrapper {
        min-width: 300px;
        padding: 30px 20px;
    }

    .preview-unsupported {
        min-width: 300px;
        padding: 40px 20px;
    }

    .preview-text {
        font-size: 12px;
        padding: 15px;
    }

    .files-table .action-text {
        display: none;
    }

    .files-table .action-link {
        padding: 6px;
        font-size: 1.1em;
    }

    .files-table td,
    .files-table th {
        padding: 8px 4px;
    }
}

/* 上传进度提示 */
.upload-status {
    padding: 10px;
    border-radius: 4px;
    margin-bottom: 10px;
    display: none;
}

.upload-status.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    display: block;
}

.upload-status.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    display: block;
}

/* 自定义对话框样式 */
.app-dialog[hidden] {
    display: none;
}

.app-dialog {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 0, 0, 0.35);
    backdrop-filter: blur(2px);
    z-index: 1100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.app-dialog.is-visible {
    opacity: 1;
    pointer-events: auto;
}

.app-dialog__backdrop {
    position: absolute;
    inset: 0;
}

.app-dialog__panel {
    position: relative;
    background-color: var(--container-bg);
    color: var(--text-color);
    border-radius: 12px;
    box-shadow: 0 18px 60px rgba(0, 0, 0, 0.25);
    padding: 24px;
    min-width: 320px;
    max-width: min(420px, 90vw);
    transform: translateY(20px);
    transition: transform 0.2s ease;
}

.app-dialog.is-visible .app-dialog__panel {
    transform: translateY(0);
}

.app-dialog__title {
    margin: 0 0 12px;
    font-size: 1.15em;
    font-weight: 600;
}

.app-dialog__message {
    margin-bottom: 18px;
    line-height: 1.5;
    color: var(--text-color);
    word-break: break-word;
}

.app-dialog__input {
    margin-bottom: 18px;
    display: block;
    width: 100%;
}

.app-dialog__input input {
    width: 100%;
    padding: 10px 12px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
    background-color: var(--container-bg);
    color: var(--text-color);
    font-size: 0.95em;
    box-sizing: border-box;
    font-family: inherit;
}

.app-dialog__input input::placeholder {
    color: var(--secondary-text);
}

.app-dialog__input input:focus {
    outline: none;
    border-color: var(--link-color);
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.15);
}

.app-dialog__actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.app-dialog__btn {
    padding: 8px 16px;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    font-size: 0.95em;
    transition: transform 0.15s ease, background-color 0.2s ease;
}

.app-dialog__btn:hover {
    transform: translateY(-1px);
}

.app-dialog__cancel {
    background-color: var(--hover-bg);
    color: var(--secondary-text);
}

.app-dialog__cancel:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.app-dialog__confirm {
    background-color: #dc3545;
    color: #fff;
}

.app-dialog__confirm:hover {
    background-color: #c82333;
}

@media (max-width: 480px) {
    .app-dialog__panel {
        width: calc(100vw - 40px);
        padding: 20px;
    }
}

.action-link:hover,
.grid-action-btn:hover {
    color: var(--link-hover-color);
    background-color: var(--hover-bg-color);
}

#deleteTrigger,
.delete-btn,
.grid-action-btn.delete {
    color: var(--danger-color, #dc3545);
}

#deleteTrigger:hover,
.delete-btn:hover,
.grid-action-btn.delete:hover {
    color: var(--danger-hover-color, #a0202d);
}

.rename-btn,
.grid-action-btn.rename {
    color: var(--warning-color, #ffc107);
}

.rename-btn:hover,
.grid-action-btn.rename:hover {
    color: var(--warning-hover-color, #e0a800);
}

.file-name-col {
    width: auto;
    max-width: 300px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.file-name-col a {
    display: inline-block;
    max-width: calc(100% - 30px);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    vertical-align: middle;
}

.file-size-col {
    width: 100px;
    min-width: 100px;
    white-space: nowrap;
}

.last-modified-col {
    width: 180px;
    min-width: 180px;
    white-space: nowrap;
}

.actions-col {
    white-space: nowrap;
}

.actions-col > * {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-left: 4px;
}

@media (max-width: 1200px) {
    .files-table .action-text {
        display: none;
    }
    .files-table .action-link {
        padding: 6px 8px;
    }
}

@media (max-width: 992px) {
    .last-modified-col {
        display: none !important;
    }
    .file-name-col {
        max-width: 200px;
    }
}

@media (max-width: 768px) {
    .file-size-col {
        display: none !important;
    }
    .file-name-col {
        max-width: 150px;
    }
    
    .files-table .action-text {
        display: none;
    }

    .files-table .action-link,
    .files-table button.action-link {
        padding: 6px;
        font-size: 1em;
        margin-left: 2px;
    }

    .files-table td,
    .files-table th {
        padding: 8px 4px;
    }
    
    .actions-col > * {
        margin-left: 2px;
        gap: 2px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }
    
    .container {
        padding: 12px;
        width: calc(100% - 20px);
    }
    
    h1 {
        margin-bottom: 20px;
        padding-bottom: 8px;
        justify-content: flex-start;
    }
    
    h1 > div {
        width: 100%;
        justify-content: flex-start;
    }
    
    .files-table td,
    .files-table th {
        padding: 6px 2px;
        font-size: 0.9em;
    }
    
    .checkbox-col {
        width: 30px;
    }
    
    .file-name-col {
        max-width: 120px;
        font-size: 0.85em;
    }
    
    .files-table .action-link,
    .files-table button.action-link {
        padding: 4px;
        font-size: 0.9em;
        margin-left: 1px;
    }
    
    .actions-col > * {
        margin-left: 1px;
        gap: 1px;
    }
}
        font-size: 1.1em;
    }

    .files-table td,
    .files-table th {
        padding: 8px 4px;
    }
}