/* ============================================
   个人导航页 - 全局样式
   ============================================ */

/* ---------- CSS 变量（亮色主题） ---------- */
:root {
    --bg-primary: #f5f7fa;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-hover: #f0f2f5;
    --text-primary: #1a1a2e;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --border-color: #e5e7eb;
    --primary-color: #4f6ef7;
    --primary-hover: #3b5de7;
    --primary-light: #eef1ff;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-full: 9999px;
    --transition: all 0.2s ease;
}

/* ---------- 暗色主题 ---------- */
[data-theme="dark"] {
    --bg-primary: #0f1117;
    --bg-secondary: #1a1d29;
    --bg-card: #1e2130;
    --bg-hover: #2a2d3e;
    --text-primary: #e8eaf0;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --border-color: #2d3142;
    --primary-color: #6b8aff;
    --primary-hover: #5a7af0;
    --primary-light: #1e2540;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.5);
}

/* ---------- 全局重置 ---------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    transition: var(--transition);
}

a {
    color: inherit;
    text-decoration: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input, select, textarea {
    font-family: inherit;
    font-size: 14px;
}

/* ============================================
   前台页面样式
   ============================================ */

/* ---------- 顶部导航栏 ---------- */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

[data-theme="dark"] .navbar {
    background: rgba(15, 17, 23, 0.8);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 18px;
    font-weight: 700;
}

.logo-icon {
    font-size: 24px;
}

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

.theme-toggle {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: var(--transition);
    background: var(--bg-hover);
}

.theme-toggle:hover {
    background: var(--primary-light);
    transform: scale(1.1);
}

.theme-icon {
    display: none;
}

[data-theme="light"] .theme-icon.sun,
:not([data-theme]) .theme-icon.sun {
    display: block;
}

[data-theme="dark"] .theme-icon.moon {
    display: block;
}

.admin-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--radius-full);
    background: var(--bg-hover);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.admin-link:hover {
    background: var(--primary-light);
    color: var(--primary-color);
}

/* ---------- 主内容区 ---------- */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 24px 60px;
}

/* ---------- 搜索区域 ---------- */
.search-section {
    text-align: center;
    margin-bottom: 40px;
}

.site-title {
    font-size: 36px;
    font-weight: 800;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--primary-color), #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.site-subtitle {
    color: var(--text-secondary);
    font-size: 16px;
    margin-bottom: 28px;
}

.search-box {
    display: flex;
    max-width: 640px;
    margin: 0 auto;
    background: var(--bg-card);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-md);
    border: 2px solid transparent;
    transition: var(--transition);
    overflow: hidden;
}

.search-box:focus-within {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px var(--primary-light);
}

.search-engine-select {
    position: relative;
    flex-shrink: 0;
}

.search-engine-select select {
    appearance: none;
    -webkit-appearance: none;
    height: 52px;
    padding: 0 32px 0 20px;
    border: none;
    background: var(--bg-hover);
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    border-right: 1px solid var(--border-color);
}

.search-engine-select::after {
    content: '▾';
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    color: var(--text-secondary);
    font-size: 12px;
}

.search-input {
    flex: 1;
    height: 52px;
    padding: 0 20px;
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 15px;
    outline: none;
}

.search-input::placeholder {
    color: var(--text-muted);
}

.search-btn {
    flex-shrink: 0;
    width: 56px;
    height: 52px;
    background: var(--primary-color);
    color: white;
    font-size: 18px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.search-btn:hover {
    background: var(--primary-hover);
}

/* ---------- 分类标签 ---------- */
.category-section {
    margin-bottom: 28px;
}

.category-tabs {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding: 4px 0;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.category-tabs::-webkit-scrollbar {
    display: none;
}

.category-tab {
    flex-shrink: 0;
    padding: 8px 20px;
    border-radius: var(--radius-full);
    background: var(--bg-card);
    color: var(--text-secondary);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--border-color);
    white-space: nowrap;
}

.category-tab:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.category-tab.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    box-shadow: 0 2px 8px rgba(79, 110, 247, 0.3);
}

/* ---------- 网址卡片网格 ---------- */
.sites-section {
    min-height: 200px;
}

.sites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 16px;
}

.site-card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 18px;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: flex-start;
    gap: 14px;
    position: relative;
    overflow: hidden;
}

.site-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), #8b5cf6);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.site-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.site-card:hover::before {
    transform: scaleX(1);
}

.site-logo {
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-sm);
    background: var(--bg-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
    overflow: hidden;
}

.site-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.site-info {
    flex: 1;
    min-width: 0;
}

.site-name {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.site-desc {
    font-size: 12px;
    color: var(--text-secondary);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

/* ---------- 空状态 / 加载状态 ---------- */
.empty-state, .loading-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.empty-btn {
    display: inline-block;
    margin-top: 16px;
    padding: 10px 24px;
    background: var(--primary-color);
    color: white;
    border-radius: var(--radius-full);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
}

.empty-btn:hover {
    background: var(--primary-hover);
}

.loading-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    margin: 0 auto 16px;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ---------- 页脚 ---------- */
.footer {
    text-align: center;
    padding: 24px;
    color: var(--text-muted);
    font-size: 13px;
    border-top: 1px solid var(--border-color);
}

/* ============================================
   后台管理页面样式
   ============================================ */

.admin-body {
    background: var(--bg-primary);
}

/* ---------- 登录页 ---------- */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.login-box {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 40px;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

.login-icon {
    font-size: 48px;
    display: block;
    margin-bottom: 12px;
}

.login-header h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 8px;
}

.login-header p {
    color: var(--text-secondary);
    font-size: 14px;
}

.login-form .form-group {
    margin-bottom: 20px;
}

.login-form label {
    display: block;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.login-form input {
    width: 100%;
    height: 44px;
    padding: 0 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
    outline: none;
}

.login-form input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.login-error {
    background: #fef2f2;
    color: var(--danger-color);
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    margin-bottom: 16px;
}

[data-theme="dark"] .login-error {
    background: rgba(239, 68, 68, 0.15);
}

.env-warning {
    background: #fffbeb;
    border: 1px solid #fde68a;
    color: #92400e;
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    margin-bottom: 16px;
    line-height: 1.6;
}

.env-warning p {
    margin: 4px 0;
}

.env-warning a {
    color: #b45309;
    text-decoration: underline;
}

[data-theme="dark"] .env-warning {
    background: rgba(245, 158, 11, 0.1);
    border-color: rgba(245, 158, 11, 0.3);
    color: #fbbf24;
}

[data-theme="dark"] .env-warning a {
    color: #fcd34d;
}

.login-footer {
    text-align: center;
    margin-top: 20px;
}

.login-footer a {
    color: var(--text-secondary);
    font-size: 13px;
}

.login-footer a:hover {
    color: var(--primary-color);
}

/* ---------- 后台导航栏 ---------- */
.admin-navbar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 50;
}

.admin-nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.admin-logo {
    font-size: 16px;
    font-weight: 700;
}

.admin-nav-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.admin-user {
    font-size: 14px;
    color: var(--text-secondary);
}

/* ---------- 按钮 ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 18px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition);
    white-space: nowrap;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-hover);
}

.btn-outline {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-outline:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    background: var(--primary-light);
}

.btn-danger {
    background: var(--danger-color);
    color: white;
}

.btn-danger:hover {
    background: #dc2626;
}

.btn-sm {
    padding: 5px 12px;
    font-size: 13px;
}

.btn-block {
    width: 100%;
    height: 44px;
}

/* ---------- 后台主内容 ---------- */
.admin-main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px;
}

/* ---------- Tab 切换 ---------- */
.admin-tabs {
    display: flex;
    gap: 4px;
    margin-bottom: 20px;
    background: var(--bg-secondary);
    padding: 4px;
    border-radius: var(--radius-md);
    width: fit-content;
}

.admin-tab {
    padding: 8px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
}

.admin-tab:hover {
    color: var(--text-primary);
}

.admin-tab.active {
    background: var(--primary-color);
    color: white;
}

/* ---------- 面板 ---------- */
.admin-panel {
    display: none;
}

.admin-panel.active {
    display: block;
}

/* ---------- 工具栏 ---------- */
.panel-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
    flex-wrap: wrap;
    gap: 12px;
}

.panel-desc {
    color: var(--text-secondary);
    font-size: 14px;
}

.form-select {
    height: 36px;
    padding: 0 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    color: var(--text-primary);
    font-size: 14px;
    cursor: pointer;
    outline: none;
}

.form-select:focus {
    border-color: var(--primary-color);
}

/* ---------- 数据表格 ---------- */
.table-container {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

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

.data-table th {
    background: var(--bg-hover);
    padding: 12px 16px;
    text-align: left;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-color);
}

.data-table td {
    padding: 12px 16px;
    font-size: 14px;
    border-bottom: 1px solid var(--border-color);
    vertical-align: middle;
}

.data-table tr:last-child td {
    border-bottom: none;
}

.data-table tr:hover td {
    background: var(--bg-hover);
}

.table-logo {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    background: var(--bg-hover);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    font-weight: 700;
    color: var(--primary-color);
    overflow: hidden;
}

.table-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.table-url {
    color: var(--text-secondary);
    font-size: 13px;
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.table-desc {
    color: var(--text-secondary);
    font-size: 13px;
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.table-actions {
    display: flex;
    gap: 6px;
}

.sort-handle {
    cursor: grab;
    color: var(--text-muted);
    font-size: 16px;
    user-select: none;
}

.sort-handle:active {
    cursor: grabbing;
}

/* 排序序号 */
.sort-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--bg-hover);
    color: var(--text-secondary);
    font-size: 12px;
    font-weight: 600;
}

/* 排序按钮 */
.sort-btn {
    min-width: 30px;
    padding: 4px 8px;
    font-size: 14px;
    line-height: 1;
}

.sort-btn:hover:not(:disabled) {
    background: var(--primary-light);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.sort-btn:disabled {
    opacity: 0.35;
    cursor: not-allowed;
}

.table-empty {
    padding: 48px;
    text-align: center;
    color: var(--text-secondary);
}

/* ---------- 弹窗 ---------- */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-overlay.show {
    display: flex;
}

.modal {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: modalIn 0.2s ease;
}

.modal-sm {
    max-width: 420px;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: translateY(-20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    font-size: 20px;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
}

/* ---------- 表单 ---------- */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-primary);
}

/* 表单标签行（标签 + 按钮） */
.form-label-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 6px;
}

.form-label-row label {
    margin-bottom: 0;
}

/* 自动获取描述按钮 */
.auto-fetch-desc-btn {
    padding: 3px 10px;
    font-size: 12px;
    border-radius: var(--radius-sm);
}

.auto-fetch-desc-btn:hover {
    background: var(--primary-light);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.auto-fetch-desc-btn .btn-icon {
    font-size: 12px;
}

.required {
    color: var(--danger-color);
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 9px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-group textarea {
    resize: vertical;
    min-height: 60px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.input-group {
    display: flex;
    gap: 8px;
}

.input-group input {
    flex: 1;
}

/* 自动获取Logo按钮 */
.auto-fetch-btn {
    white-space: nowrap;
    box-shadow: 0 2px 8px rgba(79, 110, 247, 0.25);
    transition: var(--transition);
}

.auto-fetch-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(79, 110, 247, 0.35);
}

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

.auto-fetch-btn .btn-icon {
    font-size: 14px;
}

/* 推荐图标列表 */
.icon-suggestions {
    margin-top: 8px;
    padding: 10px;
    background: var(--bg-hover);
    border-radius: var(--radius-sm);
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.icon-suggestion-item {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    cursor: pointer;
    transition: var(--transition);
}

.icon-suggestion-item:hover {
    transform: scale(1.15);
    border-color: var(--primary-color);
    box-shadow: 0 2px 8px rgba(79, 110, 247, 0.2);
}

.icon-suggestion-item.selected {
    background: var(--primary-light);
    border-color: var(--primary-color);
}

/* ---------- Logo 上传区域 ---------- */
.logo-upload-area {
    display: flex;
    gap: 16px;
    align-items: flex-start;
}

.logo-preview {
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: var(--bg-hover);
    border: 2px dashed var(--border-color);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.logo-preview img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.logo-placeholder {
    font-size: 11px;
    color: var(--text-muted);
}

.logo-actions {
    flex: 1;
}

.logo-actions .form-input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 13px;
    margin-bottom: 8px;
    outline: none;
}

.logo-actions .form-input:focus {
    border-color: var(--primary-color);
}

.logo-btns {
    display: flex;
    gap: 8px;
}

/* ---------- Toast 提示 ---------- */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    animation: toastIn 0.3s ease;
    max-width: 360px;
}

.toast-success {
    background: var(--success-color);
    color: white;
}

.toast-error {
    background: var(--danger-color);
    color: white;
}

.toast-info {
    background: var(--primary-color);
    color: white;
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes toastOut {
    to {
        opacity: 0;
        transform: translateX(100%);
    }
}

/* ============================================
   响应式适配
   ============================================ */

@media (max-width: 768px) {
    .nav-container {
        padding: 0 16px;
    }

    .admin-text {
        display: none;
    }

    .main-content {
        padding: 24px 16px 40px;
    }

    .site-title {
        font-size: 28px;
    }

    .search-box {
        flex-direction: column;
        border-radius: var(--radius-md);
    }

    .search-engine-select {
        width: 100%;
    }

    .search-engine-select select {
        width: 100%;
        height: 44px;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }

    .search-input {
        height: 48px;
    }

    .search-btn {
        width: 100%;
        height: 48px;
    }

    .sites-grid {
        grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
        gap: 12px;
    }

    .site-card {
        padding: 14px;
    }

    .site-logo {
        width: 36px;
        height: 36px;
        font-size: 16px;
    }

    /* 后台响应式 */
    .admin-main {
        padding: 16px;
    }

    .admin-nav-container {
        padding: 0 16px;
    }

    .admin-user {
        display: none;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

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

    .data-table {
        min-width: 600px;
    }

    .login-box {
        padding: 28px 20px;
    }

    .logo-upload-area {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .sites-grid {
        grid-template-columns: 1fr;
    }

    .category-tab {
        padding: 6px 16px;
        font-size: 13px;
    }
}

/* ============================================
   TwoNav 风格前台样式
   ============================================ */

.twonav-body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    background: linear-gradient(135deg, #f5f7fa 0%, #e8ecf1 50%, #f0f2f5 100%);
    background-attachment: fixed;
}

.twonav-layout {
    display: flex;
    height: 100vh;
    overflow: hidden;
    position: relative;
}

/* 背景装饰光斑 */
.twonav-layout::before {
    content: '';
    position: absolute;
    top: -20%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(79, 110, 247, 0.08) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.twonav-layout::after {
    content: '';
    position: absolute;
    bottom: -20%;
    left: 20%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(139, 92, 246, 0.06) 0%, transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

/* ---------- 左侧侧边栏 ---------- */
.twonav-sidebar {
    width: 240px;
    min-width: 240px;
    background: rgba(255, 255, 255, 0.65);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-right: 1px solid rgba(255, 255, 255, 0.5);
    box-shadow: 2px 0 20px rgba(0, 0, 0, 0.04);
    display: flex;
    flex-direction: column;
    transition: width 0.3s ease, min-width 0.3s ease;
    z-index: 100;
}

.twonav-sidebar.collapsed {
    width: 64px;
    min-width: 64px;
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    min-height: 60px;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 17px;
    font-weight: 700;
    white-space: nowrap;
    overflow: hidden;
}

.sidebar-logo .logo-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.sidebar-logo .logo-text {
    overflow: hidden;
    text-overflow: ellipsis;
}

.twonav-sidebar.collapsed .logo-text,
.twonav-sidebar.collapsed .nav-text,
.twonav-sidebar.collapsed .nav-badge,
.twonav-sidebar.collapsed .footer-text {
    display: none;
}

.sidebar-toggle {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    color: var(--text-secondary);
    transition: var(--transition);
    flex-shrink: 0;
}

.sidebar-toggle:hover {
    background: var(--bg-hover);
    color: var(--primary-color);
}

.twonav-sidebar.collapsed .sidebar-toggle .toggle-icon {
    transform: rotate(180deg);
}

/* ---------- 侧边栏导航 ---------- */
.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 12px 8px;
    scrollbar-width: thin;
}

.sidebar-nav::-webkit-scrollbar {
    width: 4px;
}

.sidebar-nav::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 2px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 2px;
    text-align: left;
    position: relative;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.6);
    color: var(--text-primary);
}

.nav-item.active {
    background: rgba(79, 110, 247, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    color: var(--primary-color);
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(79, 110, 247, 0.1);
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: -8px;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 0 2px 2px 0;
}

.nav-icon {
    font-size: 18px;
    flex-shrink: 0;
    width: 24px;
    text-align: center;
}

.nav-text {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.nav-badge {
    background: var(--bg-hover);
    color: var(--text-muted);
    font-size: 11px;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    flex-shrink: 0;
    font-weight: 500;
}

.nav-item.active .nav-badge {
    background: var(--primary-color);
    color: white;
}

/* ---------- 侧边栏底部 ---------- */
.sidebar-footer {
    border-top: 1px solid rgba(0, 0, 0, 0.06);
    padding: 12px 8px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.footer-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    width: 100%;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    background: none;
    border: none;
    text-align: left;
}

.footer-btn:hover {
    background: rgba(255, 255, 255, 0.6);
    color: var(--text-primary);
}

.footer-icon {
    font-size: 18px;
    flex-shrink: 0;
    width: 24px;
    text-align: center;
}

.theme-toggle-btn .footer-icon.sun {
    display: block;
}

.theme-toggle-btn .footer-icon.moon {
    display: none;
}

[data-theme="dark"] .theme-toggle-btn .footer-icon.sun {
    display: none;
}

[data-theme="dark"] .theme-toggle-btn .footer-icon.moon {
    display: block;
}

/* ---------- 移动端遮罩 ---------- */
.sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99;
}

/* ---------- 右侧主内容区 ---------- */
.twonav-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: transparent;
}

.main-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 14px 24px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.4);
    background: rgba(255, 255, 255, 0.55);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    min-height: 60px;
    flex-shrink: 0;
    z-index: 10;
}

.mobile-menu-btn {
    display: none;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    font-size: 18px;
    color: var(--text-secondary);
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.mobile-menu-btn:hover {
    background: var(--bg-hover);
}

.main-title {
    font-size: 18px;
    font-weight: 700;
    margin: 0;
    white-space: nowrap;
}

.header-right {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

/* TwoNav 风格搜索框 */
.twonav-body .search-box {
    display: flex;
    max-width: 480px;
    width: 100%;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.6);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
    overflow: hidden;
    transition: var(--transition);
}

.twonav-body .search-box:focus-within {
    border-color: rgba(79, 110, 247, 0.4);
    box-shadow: 0 0 0 3px rgba(79, 110, 247, 0.1), 0 2px 12px rgba(0, 0, 0, 0.06);
    background: rgba(255, 255, 255, 0.8);
}

.twonav-body .search-engine-select select {
    height: 40px;
    padding: 0 28px 0 14px;
    background: transparent;
    border: none;
    border-right: 1px solid var(--border-color);
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    outline: none;
}

.twonav-body .search-input {
    flex: 1;
    height: 40px;
    padding: 0 14px;
    border: none;
    background: transparent;
    font-size: 14px;
    outline: none;
    color: var(--text-primary);
}

.twonav-body .search-btn {
    width: 44px;
    height: 40px;
    background: var(--primary-color);
    color: white;
    font-size: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    flex-shrink: 0;
}

.twonav-body .search-btn:hover {
    background: var(--primary-hover);
}

/* ---------- 内容区域 ---------- */
.content-area {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

/* TwoNav 风格卡片网格 */
.twonav-body .sites-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 14px;
}

/* TwoNav 风格网址卡片 */
.twonav-body .site-card {
    background: rgba(255, 255, 255, 0.55);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.6);
    border-radius: var(--radius-md);
    padding: 16px;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
}

.twonav-body .site-card::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--primary-color), #8b5cf6);
    transform: scaleY(0);
    transition: transform 0.2s ease;
}

.twonav-body .site-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08);
    border-color: rgba(79, 110, 247, 0.3);
    background: rgba(255, 255, 255, 0.75);
}

.twonav-body .site-card:hover::before {
    transform: scaleY(1);
}

.twonav-body .site-logo {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.7);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 700;
    color: var(--primary-color);
    flex-shrink: 0;
    overflow: hidden;
}

.twonav-body .site-logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.twonav-body .site-info {
    flex: 1;
    min-width: 0;
}

.twonav-body .site-name {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.twonav-body .site-desc {
    font-size: 12px;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ---------- TwoNav 响应式适配 ---------- */
@media (max-width: 1024px) {
    .twonav-body .sites-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    }
}

@media (max-width: 768px) {
    .twonav-sidebar {
        position: fixed;
        left: 0;
        top: 0;
        bottom: 0;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        box-shadow: var(--shadow-lg);
    }

    .twonav-sidebar.mobile-open {
        transform: translateX(0);
    }

    .twonav-sidebar.collapsed {
        width: 240px;
        min-width: 240px;
    }

    .twonav-sidebar.collapsed .logo-text,
    .twonav-sidebar.collapsed .nav-text,
    .twonav-sidebar.collapsed .nav-badge,
    .twonav-sidebar.collapsed .footer-text {
        display: block;
    }

    .sidebar-toggle {
        display: none;
    }

    .sidebar-overlay.show {
        display: block;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .main-header {
        padding: 12px 16px;
    }

    .main-title {
        font-size: 16px;
    }

    .content-area {
        padding: 16px;
    }

    .twonav-body .sites-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 10px;
    }

    .twonav-body .site-card {
        padding: 12px;
    }

    .twonav-body .site-logo {
        width: 34px;
        height: 34px;
        font-size: 15px;
    }

    .twonav-body .search-box {
        max-width: none;
    }
}

@media (max-width: 480px) {
    .twonav-body .sites-grid {
        grid-template-columns: 1fr 1fr;
    }

    .main-header {
        flex-wrap: wrap;
    }

    .header-right {
        order: 3;
        width: 100%;
    }
}