/* ==================== CSS 变量 ==================== */
:root {
    /* 颜色系统 */
    --color-primary: #3b82f6;
    --color-primary-hover: #2563eb;
    --color-secondary: #6b7280;
    --color-danger: #ef4444;
    --color-danger-hover: #dc2626;
    --color-success: #10b981;

    /* 中性色 - 亮色主题 */
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #f9fafb;
    --color-bg-tertiary: #f3f4f6;
    --color-bg-hover: #f5f5f5;
    --color-border: #e5e7eb;
    --color-border-light: #f0f0f0;

    /* 文字颜色 - 亮色主题 */
    --color-text-primary: #111827;
    --color-text-secondary: #6b7280;
    --color-text-tertiary: #9ca3af;

    /* 阴影 - 亮色主题 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* 尺寸 */
    --sidebar-width: 260px;
    --header-height: 80px;
    --border-radius-sm: 6px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;

    /* 间距 */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;

    /* 字体 */
    --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-size-sm: 13px;
    --font-size-base: 14px;
    --font-size-md: 15px;
    --font-size-lg: 16px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;

    /* 动画 */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ==================== 暗色主题 ==================== */
[data-theme="dark"] {
    /* 暗黑颜色系统 */
    --color-primary: #2563eb;
    --color-primary-hover: #1d4ed8;
    --color-secondary: #f3f4f6;
    --color-danger: #e0241b;
    --color-danger-hover: #dc2626;
    --color-success: #22c55e;
    /* 中性色 - 暗色主题 */
    --color-bg-primary: #1f2937;
    --color-bg-secondary: #111827;
    --color-bg-tertiary: #374151;
    --color-bg-hover: #2d3748;
    --color-border: #374151;
    --color-border-light: #2d3748;

    /* 文字颜色 - 暗色主题 */
    --color-text-primary: #f9fafb;
    --color-text-secondary: #d1d5db;
    --color-text-tertiary: #9ca3af;

    /* 阴影 - 暗色主题 */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.7);
}

/* ==================== 主题过渡动画 ==================== */
body,
.sidebar,
.sidebar-header,
.nav-item,
.category-item,
.link-card,
.modal-content,
.btn-primary,
.btn-secondary,
.btn-icon,
.toast,
input,
select,
textarea {
    transition: background-color var(--transition-base),
                color var(--transition-base),
                border-color var(--transition-base),
                box-shadow var(--transition-base);
}

/* ==================== 全局样式 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    background-color: var(--color-bg-secondary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ==================== 布局 ==================== */
body {
    display: flex;
    height: 100vh;
}

/* 侧边栏遮罩层 */
.sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* 侧边栏 */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background-color: var(--color-bg-primary);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    transform: translateX(-100%);
    transition: transform var(--transition-slow);
    z-index: 100;
    box-shadow: var(--shadow-xl);
}

.sidebar.active {
    transform: translateX(0);
}

.sidebar-header {
    padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    border-bottom: 1px solid var(--color-border-light);
}

.sidebar-header h1 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text-primary);
    flex: 1;
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

/* 导航项 */
.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: 10px var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--color-text-secondary);
    font-size: var(--font-size-md);
}

.nav-item:hover {
    background-color: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.nav-item.active {
    background-color: var(--color-bg-tertiary);
    color: var(--color-primary);
    font-weight: 500;
}

.nav-icon {
    flex-shrink: 0;
}

/* 分类项 */
.category-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: 10px var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--color-text-secondary);
    font-size: var(--font-size-md);
    position: relative;
    height: auto;
}

.category-item:hover {
    background-color: var(--color-bg-hover);
}

.category-item.active {
    background-color: var(--color-bg-tertiary);
    color: var(--color-text-primary);
    font-weight: 500;
}

.category-item .folder-icon {
    flex-shrink: 0;
}

.category-item .category-name {
    flex: 1;
}

.category-actions {
    display: none;
    gap: var(--spacing-sm);
}

.category-item:hover .category-actions {
    display: flex;
}

.category-item:hover .category-actions .btn-icon {
    width: 18px;
    height: 18px;
}

.divider {
    height: 1px;
    background-color: var(--color-border-light);
    margin: var(--spacing-md) 0;
}

.section-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-md);
    padding: 0 var(--spacing-md);
}

/* 主内容区 */
.main-content {
    flex: 1;
    width: 100%;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.content-header {
    background-color: var(--color-bg-primary);
    padding: var(--spacing-lg) var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid var(--color-border);
    min-height: var(--header-height);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.hamburger-menu {
    width: 40px;
    height: 40px;
}

.content-header h2 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
    color: var(--color-text-primary);
}

.header-actions {
    display: flex;
    gap: var(--spacing-md);
}

/* 分类描述 */
.category-description {
    padding: var(--spacing-lg);
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-primary);
    font-size: var(--font-size-xl);
    font-family: consolas, monospace;
    line-height: 1.6;
}

/* 链接网格 */
.links-grid {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-xl);
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    grid-auto-rows: max-content;
    gap: var(--spacing-lg);
    align-content: start;
}

/* 链接卡片 */
.link-card {
    background-color: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-base);
    cursor: pointer;
    position: relative;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    overflow: hidden;
}

.link-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary) !important;
    transform: translateY(-2px);
}

/* 置顶角标 */
.pin-badge {
    position: absolute;
    top: 0;
    right: 0;
    background: linear-gradient(135deg, var(--color-primary) 0%, #2563eb 100%);
    color: white;
    font-size: 9px;
    font-weight: 600;
    padding: 3px 9px 3px 10px;
    border-radius: 0 var(--border-radius-lg) 0 12px;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
    z-index: 1;
    letter-spacing: 0.5px;
}

.link-card-header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.link-favicon {
    width: 25px;
    height: 25px;
    border-radius: var(--border-radius-sm);
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
}

.link-favicon img {
    width: 24px;
    height: 24px;
    object-fit: contain;
    border-radius: var(--border-radius-sm);
}

/* 暗色主题下SVG图标透明背景处理 */
[data-theme="dark"] .link-favicon img.svg-icon {
    background-color: transparent;
}

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

.link-title {
    font-size: var(--font-size-lg);
    font-weight: 500;
    color: var(--color-text-primary);
    margin-bottom: var(--spacing-xs);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.link-url {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.link-actions {
    display: flex;
    flex-direction: column;
    gap: 4px;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.link-card:hover .link-actions {
    opacity: 1;
}

/* 空状态 */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex: 1;
    color: var(--color-text-tertiary);
    padding: var(--spacing-xl);
}

.empty-state svg {
    margin-bottom: var(--spacing-lg);
    opacity: 0.5;
}

.empty-state .empty-title {
    font-size: var(--font-size-lg);
    font-weight: 500;
    margin-bottom: var(--spacing-sm);
}

.empty-state .empty-description {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-lg);
}

/* 懒加载哨兵元素 */
.loading-sentinel {
    grid-column: 1 / -1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-xl);
    min-height: 80px;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ==================== 按钮样式 ==================== */
button {
    font-family: inherit;
    font-size: var(--font-size-base);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    outline: none;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 10px 18px;
    background-color: var(--color-primary);
    color: white;
    border-radius: var(--border-radius-md);
    font-weight: 500;
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 10px 18px;
    background-color: var(--color-bg-primary);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    font-weight: 500;
}

.btn-secondary:hover {
    background-color: var(--color-bg-tertiary);
    border-color: var(--color-secondary);
}

.btn-danger {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 10px 18px;
    background-color: var(--color-danger);
    color: white;
    border-radius: var(--border-radius-md);
    font-weight: 500;
}

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

.btn-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: transparent;
    color: var(--color-text-secondary);
    border-radius: var(--border-radius-sm);
    padding: 0;
}

.btn-icon:hover {
    background-color: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.btn-close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: transparent;
    color: var(--color-text-secondary);
    border-radius: var(--border-radius-sm);
    font-size: 24px;
    line-height: 1;
}

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

/* ==================== 模态框 ==================== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    animation: fadeIn var(--transition-base);
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--color-bg-primary);
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-xl);
    animation: slideUp var(--transition-base);
}

.modal-small {
    max-width: 400px;
}

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

.modal-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--color-text-primary);
}

.modal-body {
    padding: var(--spacing-xl);
    overflow-y: auto;
    flex: 1;
}

.confirm-description {
    margin-top: var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
    font-style: normal;
    line-height: 1.5;
}

.modal-footer {
    padding: var(--spacing-lg) var(--spacing-xl);
    border-top: 1px solid var(--color-border);
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
}

/* ==================== 表单样式 ==================== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--color-text-primary);
    font-size: var(--font-size-md);
}

.form-group input[type="text"],
.form-group input[type="url"],
.form-group input[type="email"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-base);
    font-family: inherit;
    transition: all var(--transition-fast);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group textarea {
    resize: vertical;
    max-height: 40px;
}

.form-group input[type="file"] {
    width: 100%;
    padding: 10px;
    border: 2px dashed var(--color-border);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.form-group input[type="file"]:hover {
    border-color: var(--color-primary);
}

.form-group input[type="file"].drag-over {
    border-color: var(--color-primary);
    background-color: rgba(59, 130, 246, 0.05);
}

.help-text {
    display: block;
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

/* 浏览器导入按钮 */
.browser-import-section {
    margin-bottom: var(--spacing-lg);
}

.browser-import-section label {
    display: block;
    margin-bottom: var(--spacing-md);
    font-weight: 500;
    color: var(--color-text-primary);
    font-size: var(--font-size-md);
}

.browser-import-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.btn-browser-import {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: 12px var(--spacing-lg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition-fast);
    width: 100%;
    text-align: left;
}

.btn-browser-import:hover:not(:disabled) {
    background-color: var(--color-bg-secondary);
    border-color: var(--color-primary);
}

.btn-browser-import:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-browser-import .browser-icon {
    flex-shrink: 0;
}

.btn-browser-import span {
    flex: 1;
}

/* 浏览器图标轮换动画容器 */
.browser-icon-rotating {
    position: relative;
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.browser-icon-rotating .browser-icon {
    position: absolute;
    top: 0;
    left: 0;
    width: 24px;
    height: 24px;
    opacity: 0;
}

/* Chrome 图标 - 从0s开始 */
.browser-icon-rotating .browser-icon[data-browser="chrome"] {
    animation: browserIconFade 5.1s ease-in-out infinite;
    animation-delay: 0s;
}

/* Edge 图标 - 与Chrome淡出同时淡入 */
.browser-icon-rotating .browser-icon[data-browser="edge"] {
    animation: browserIconFade 5.1s ease-in-out infinite;
    animation-delay: 1.7s;
}

/* Firefox 图标 - 与Edge淡出同时淡入 */
.browser-icon-rotating .browser-icon[data-browser="firefox"] {
    animation: browserIconFade 5.1s ease-in-out infinite;
    animation-delay: 3.4s;
}

/* 浏览器图标淡入淡出动画 - 完美无缝衔接 */
@keyframes browserIconFade {
    0% {
        opacity: 0;
    }
    9.80% {  /* 0.5s - 淡入完成 */
        opacity: 1;
    }
    33.33% {  /* 1.7s - 保持结束，开始淡出 */
        opacity: 1;
    }
    43.14% {  /* 2.2s - 淡出完成 */
        opacity: 0;
    }
    100% {
        opacity: 0;
    }
}

/* 导入分隔线 */
.import-divider {
    display: flex;
    align-items: center;
    margin: var(--spacing-xl) 0;
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
}

.import-divider::before,
.import-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background-color: var(--color-border);
}

.import-divider span {
    padding: 0 var(--spacing-md);
}

/* 颜色选择器 */
.color-picker {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.color-picker input[type="color"] {
    width: 60px;
    height: 40px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
}

.color-preview {
    flex: 1;
    height: 40px;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-md);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* 导入预览 */
.import-preview {
    margin-top: var(--spacing-lg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    overflow: hidden;
}

.preview-header {
    padding: 8px;
    background-color: var(--color-bg-tertiary);
    font-weight: 500;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    text-align: center;
}

.preview-content {
    padding: var(--spacing-md);
    max-height: 200px;
    overflow-y: auto;
    font-size: var(--font-size-sm);
}

.preview-item {
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    background-color: var(--color-bg-secondary);
    border-radius: var(--border-radius-sm);
}

/* ==================== 动画 ==================== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

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

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


/* ==================== Toast 通知系统 ==================== */
.toast-container {
    position: fixed;
    top: var(--spacing-lg);
    right: var(--spacing-lg);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    pointer-events: none;
}

.toast {
    background-color: var(--color-bg-primary);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    min-width: 300px;
    max-width: 400px;
    pointer-events: auto;
    animation: slideInRight var(--transition-slow);
    border-left: 4px solid;
}

.toast.removing {
    animation: slideOutRight var(--transition-slow);
}

.toast-icon {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

.toast-content {
    flex: 1;
    min-width: 0;
}

.toast-message {
    font-size: var(--font-size-base);
    color: var(--color-text-primary);
    word-wrap: break-word;
}

.toast-close {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--color-text-tertiary);
    transition: color var(--transition-fast);
    background: none;
    border: none;
    padding: 0;
}

.toast-close:hover {
    color: var(--color-text-primary);
}

/* Toast 类型样式 */
.toast.success {
    border-left-color: var(--color-success);
}

.toast.success .toast-icon {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--color-success);
}

.toast.error {
    border-left-color: var(--color-danger);
}

.toast.error .toast-icon {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--color-danger);
}

.toast.warning {
    border-left-color: #f59e0b;
}

.toast.warning .toast-icon {
    background-color: rgba(245, 158, 11, 0.1);
    color: #f59e0b;
}

.toast.info {
    border-left-color: var(--color-primary);
}

.toast.info .toast-icon {
    background-color: rgba(59, 130, 246, 0.1);
    color: var(--color-primary);
}


/* ==================== 滚动条样式 ==================== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--color-secondary);
}

/* ==================== 主题切换按钮 ==================== */
.theme-toggle {
    position: relative;
    width: 40px;
    height: 40px;
}

.theme-icon {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: opacity var(--transition-base),
                transform var(--transition-base),
                rotate var(--transition-base);
}

/* 亮色模式：显示太阳图标 */
.sun-icon {
    opacity: 1;
    rotate: 0deg;
}

.moon-icon {
    opacity: 0;
    rotate: -90deg;
}

/* 暗色模式：显示月亮图标 */
[data-theme="dark"] .sun-icon {
    opacity: 0;
    rotate: 90deg;
}

[data-theme="dark"] .moon-icon {
    opacity: 1;
    rotate: 0deg;
}

/* 悬停效果 */
.theme-toggle:hover .theme-icon {
    transform: translate(-50%, -50%) scale(1.1);
}

/* ==================== 刷新按钮 ==================== */
.refresh-btn {
    width: 40px;
    height: 40px;
}

.refresh-btn svg {
    transition: transform var(--transition-base);
}

.refresh-btn:hover {
    transform: scale(1.1);
}

/* ==================== 搜索按钮和搜索框 ==================== */
.search-btn {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
}

.search-btn svg {
    transition: transform var(--transition-base);
}

.search-btn:hover svg {
    transform: scale(1.1);
}

.search-btn.active {
    color: white;
}

.search-container {
    position: relative;
    overflow: hidden;
    width: 0;
    border-radius: var(--border-radius-md);
    transition: width 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.search-container.expanded {
    width: 200px;
}

.search-input {
    width: 200px;
    min-width: 200px;
    height: 40px;
    padding: 0 var(--spacing-md) 0 var(--spacing-lg);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    background-color: var(--color-bg-primary);
    color: var(--color-text-primary);
    font-size: 14px;
    outline: none;
    transition: border-color var(--transition-base),
                box-shadow var(--transition-base);
}

.search-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

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

/* ==================== 暗色主题特殊样式优化 ==================== */
/* 侧边栏遮罩层 - 暗色模式下更深 */
[data-theme="dark"] .sidebar-overlay {
    background-color: rgba(0, 0, 0, 0.7);
}

/* 模态框背景 - 暗色模式下更深 */
[data-theme="dark"] .modal {
    background-color: rgba(0, 0, 0, 0.7);
}

/* 置顶角标 - 暗色模式优化 */
[data-theme="dark"] .pin-badge {
    background: linear-gradient(135deg, #3b82f6 0%, #1d4ed8 100%);
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.5);
}

/* Toast 通知 - 暗色模式边框优化 */
[data-theme="dark"] .toast {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.8);
}

/* 链接卡片悬停效果 - 暗色模式优化 */
[data-theme="dark"] .link-card:hover {
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.7);
    transform: translateY(-2px);
}

/* 按钮悬停效果 - 暗色模式优化 */
[data-theme="dark"] .btn-primary:hover {
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.4);
}

/* 表单焦点效果 - 暗色模式优化 */
[data-theme="dark"] .form-group input:focus,
[data-theme="dark"] .form-group select:focus,
[data-theme="dark"] .form-group textarea:focus {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

/* 滚动条 - 暗色模式 */
[data-theme="dark"] ::-webkit-scrollbar-thumb {
    background: #4b5563;
}

[data-theme="dark"] ::-webkit-scrollbar-thumb:hover {
    background: #6b7280;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 768px) {
    .links-grid {
        grid-template-columns: 1fr;
        padding: var(--spacing-lg);
    }

    .content-header {
        padding: var(--spacing-lg);
    }

    .header-left {
        flex: 1;
    }

    .header-actions {
        gap: var(--spacing-sm);
    }

    .header-actions button span {
        display: none;
    }

    .toast-container {
        left: var(--spacing-md);
        right: var(--spacing-md);
        top: var(--spacing-md);
    }

    .toast {
        min-width: auto;
        width: 100%;
    }
}

/* ==================== 工具类 ==================== */
.pinned-badge {
    color: var(--color-primary);
}

.favorited-badge {
    color: var(--color-success);
}

/* ==================== 搜索框样式 ==================== */
.search-box-container {
    padding: 0 var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.header-search {
    margin-left: var(--spacing-lg);
    flex: 1;
    max-width: 400px;
}

.search-box {
    position: relative;
    display: flex;
    align-items: center;
    background-color: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    padding: 6px 12px;
    transition: all var(--transition-fast);
}

.search-box:focus-within {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.search-icon {
    flex-shrink: 0;
    color: var(--color-text-tertiary);
    margin-right: 8px;
}

.search-input {
    flex: 1;
    outline: none;
    background: transparent;
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    padding: 10px 10px 10px 10px;
}

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

.search-clear {
    flex-shrink: 0;
    background: none;
    border: none;
    padding: 4px;
    cursor: pointer;
    color: var(--color-text-tertiary);
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.search-clear:hover {
    background-color: var(--color-bg-hover);
    color: var(--color-text-primary);
}

/* 搜索时隐藏的项 */
.category-item.search-hidden,
.link-card.search-hidden {
    display: none !important;
}

/* 搜索高亮 */
.search-highlight {
    color: var(--color-primary);
    font-weight: 500;
    border-radius: 2px;
}

/* 响应式 */
@media (max-width: 768px) {
    .header-search {
        display: none;
    }
}

/* ==================== 设置项样式 ==================== */
.setting-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
}

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

.setting-item.disabled {
    opacity: 0.6;
}

.setting-item.disabled .setting-label {
    color: var(--color-text-tertiary);
}

.setting-label {
    flex: 1;
}

.setting-label strong {
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
}

.setting-label small {
    font-size: var(--font-size-sm);
    color: var(--color-text-tertiary);
}

/* 滑块开关样式 */
.switch {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 26px;
    flex-shrink: 0;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-bg-secondary);
    border: 2px solid var(--color-border);
    transition: all var(--transition-base);
    border-radius: 26px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 2px;
    bottom: 2px;
    background-color: var(--color-text-tertiary);
    transition: all var(--transition-base);
    border-radius: 50%;
}

.switch input:checked + .slider {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.switch input:checked + .slider:before {
    transform: translateX(22px);
    background-color: white;
}

.switch input:focus + .slider {
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

/* 禁用状态 */
.switch input:disabled + .slider {
    cursor: not-allowed;
    opacity: 0.5;
}

.switch input:disabled:checked + .slider {
    background-color: var(--color-text-tertiary);
    border-color: var(--color-text-tertiary);
}

/* ==========  右键菜单样式 ========== */
.context-menu {
    position: fixed;
    background: var(--color-bg-primary);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.15);
    min-width: 320px;
    max-width: 450px;
    z-index: 10000;
    display: none;
    overflow: hidden;
}

.context-menu.show {
    display: block;
    animation: contextMenuFadeIn 0.15s ease-out;
}

@keyframes contextMenuFadeIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* 信息栏样式 */
.context-menu-info {
    padding: 0;
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
}

.context-menu-info-row {
    display: flex;
    align-items: stretch;
    border-bottom: 1px solid var(--color-border);
    font-size: 12px;
    position: relative;
}

.context-menu-info-row:last-child {
    border-bottom: none;
}

.context-menu-label {
    color: var(--color-text-primary);
    font-weight: 500;
    background: var(--color-bg-primary);
    padding: 10px 12px;
    min-width: 50px;
    width: 50px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    border-right: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    text-align: center;
}

.context-menu-info-row:last-child .context-menu-label {
    border-bottom: none;
}

.context-menu-value {
    color: var(--color-text-primary);
    word-break: break-all;
    flex: 1;
    padding: 10px 12px;
    display: flex;
    align-items: center;
}

/* 复制按钮 */
.context-menu-copy-btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-primary);
    border-radius: 4px;
    cursor: pointer;
    opacity: 0;
    transition: opacity var(--transition-fast), background-color var(--transition-fast);
    border: 1px solid var(--color-border);
    pointer-events: none;
}

.context-menu-info-row:hover .context-menu-copy-btn {
    opacity: 1;
    pointer-events: auto;
}

.context-menu-copy-btn:hover {
    background-color: var(--color-bg-secondary);
    border-color: var(--color-primary);
}

.context-menu-copy-btn svg {
    color: var(--color-text-secondary);
    width: 12px;
    height: 12px;
}

.context-menu-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    cursor: pointer;
    font-size: 14px;
    color: var(--color-text-primary);
    transition: background-color var(--transition-base);
}

.context-menu-item:hover {
    background-color: var(--color-bg-secondary);
}

.context-menu-item svg {
    flex-shrink: 0;
    color: var(--color-text-secondary);
}

.context-menu-item:hover svg {
    color: var(--color-primary);
}

.context-menu-divider {
    height: 1px;
    background: var(--color-border);
}

/* 置顶状态高亮样式 - 只让图标变蓝 */
.context-menu-item.pinned svg {
    color: var(--color-primary);
}

/* ==========  批量操作样式 ========== */
.batch-actions,
.normal-actions {
    display: flex;
    gap: 12px;
    align-items: center;
}

.batch-actions {
    animation: fadeIn 0.2s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.btn-danger {
    background-color: #ef4444;
    color: white;
    border: none;
    padding: 10px 18px;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all var(--transition-base);
}

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

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

/* 卡片选中状态 */
.link-card.selected {
    outline: 3px solid var(--color-primary);
    outline-offset: -3px;
    background-color: rgba(59, 130, 246, 0.08);
}

/* 批量模式样式 */
.batch-mode {
    user-select: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
}

.batch-mode .link-card {
    cursor: pointer;
}

.batch-mode .link-card img {
    pointer-events: none;
    -webkit-user-drag: none;
    user-drag: none;
}

.batch-mode .link-card:hover {
    outline: 2px solid var(--color-primary);
    outline-offset: -2px;
}

/* 框选矩形 */
.selection-box {
    position: fixed;
    border: 2px solid var(--color-primary);
    background: rgba(59, 130, 246, 0.1);
    pointer-events: none;
    z-index: 9999;
    display: none;
}

.selection-box.active {
    display: block;
}