/* ==================== 基础样式 ==================== */
:root {
    --primary-color: #1f2937;
    --secondary-color: #374151;
    --accent-color: #4b5563;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 暗色主题 */
body.dark-theme {
    --bg-primary: #1f2937;
    --bg-secondary: #111827;
    --bg-tertiary: #374151;
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-tertiary: #9ca3af;
    --border-color: #374151;
}

body.dark-theme .logo h1 {
    color: var(--text-primary);
}

body.dark-theme .logo-icon {
    filter: drop-shadow(0 4px 8px rgba(255, 140, 83, 0.6));
}

body.dark-theme .logo:hover .logo-icon {
    filter: drop-shadow(0 6px 12px rgba(255, 140, 83, 0.8));
    transform: scale(1.05);
}

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

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

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ==================== 顶部导航栏 ==================== */
.header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 16px;
    cursor: pointer;
    transition: var(--transition);
}

.logo:hover {
    transform: translateY(-2px);
}

.logo-icon {
    width: 48px;
    height: 48px;
    flex-shrink: 0;
    animation: float 3s ease-in-out infinite;
    filter: drop-shadow(0 4px 8px rgba(255, 107, 107, 0.35));
    transition: var(--transition);
}

.logo:hover .logo-icon {
    filter: drop-shadow(0 6px 12px rgba(255, 107, 107, 0.5));
    transform: scale(1.05);
}

@keyframes float {
    0%, 100% { 
        transform: translateY(0px);
    }
    50% { 
        transform: translateY(-5px);
    }
}

.logo-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.logo h1 {
    font-size: 28px;
    font-weight: 700;
    color: var(--primary-color);
    line-height: 1;
    margin: 0;
}

.logo-subtitle {
    font-size: 12px;
    color: var(--text-tertiary);
    font-weight: 500;
    letter-spacing: 0.5px;
}

.header-actions {
    display: flex;
    gap: 12px;
}

.help-btn,
.refresh-btn,
.theme-toggle {
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 50%;
    background: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: var(--transition);
}

.help-btn:hover,
.refresh-btn:hover,
.theme-toggle:hover {
    background: var(--bg-tertiary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.refresh-btn:active {
    transform: translateY(0) rotate(360deg);
}

/* ==================== 主要内容区域 ==================== */
.main {
    flex: 1;
    padding: 32px 0;
}

/* ==================== 搜索和筛选区域 ==================== */
.search-section {
    margin-bottom: 32px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

/* 统计栏 */
.stats-bar {
    display: flex;
    gap: 24px;
    padding: 16px 24px;
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    border: 2px solid var(--border-color);
}

.stat-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 14px;
}

.stat-item i {
    color: var(--primary-color);
    font-size: 16px;
}

.stat-item strong {
    color: var(--primary-color);
    font-size: 18px;
    font-weight: 700;
}

.filter-buttons {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 12px 24px;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background: var(--bg-primary);
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}

.filter-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-2px);
}

.filter-btn.active {
    background: var(--primary-color);
    color: white;
    border-color: transparent;
    box-shadow: var(--shadow-md);
}

/* ==================== 面包屑导航 ==================== */
.breadcrumb {
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 14px;
}

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

.breadcrumb-item.active {
    color: var(--primary-color);
    font-weight: 600;
}

/* ==================== 平台卡片网格 ==================== */
.platforms-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 24px;
    animation: fadeIn 0.5s ease-in-out;
}

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

.platform-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    padding: 24px;
    cursor: pointer;
    transition: var(--transition);
    border: 2px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.platform-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--primary-color);
    transform: scaleX(0);
    transition: var(--transition);
}

.platform-card::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(31, 41, 55, 0.1);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.platform-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

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

.platform-card:hover::after {
    width: 300px;
    height: 300px;
}

.platform-card:active {
    transform: translateY(-6px) scale(1);
}

.platform-icon {
    width: 56px;
    height: 56px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
    margin-bottom: 16px;
    /* background 由 JavaScript 动态设置 */
    color: white;
    box-shadow: var(--shadow-md);
    position: relative;
    z-index: 1;
    transition: var(--transition);
}

.platform-card:hover .platform-icon {
    transform: scale(1.1) rotate(5deg);
    box-shadow: var(--shadow-lg);
}

.platform-name {
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.platform-desc {
    font-size: 14px;
    color: var(--text-secondary);
    line-height: 1.6;
}

.platform-category {
    display: inline-block;
    margin-top: 12px;
    padding: 4px 12px;
    border-radius: 20px;
    background: var(--bg-secondary);
    color: var(--text-tertiary);
    font-size: 12px;
    font-weight: 500;
}

/* ==================== 热榜详情视图 ==================== */
.hotlist-view {
    animation: fadeIn 0.5s ease-in-out;
}

.hotlist-view.hidden,
.platforms-view.hidden {
    display: none;
}

.hotlist-header {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    padding: 24px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 85px;
    z-index: 50;
}

.header-left {
    flex-shrink: 0;
}

.back-btn-large {
    padding: 12px 24px;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    background: var(--primary-color);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 16px;
    font-weight: 600;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.back-btn-large:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.back-btn-large i {
    font-size: 18px;
}

/* 浮动返回按钮 */
.floating-back-btn {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 56px;
    height: 56px;
    border: none;
    border-radius: 50%;
    background: var(--primary-color);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    transition: var(--transition);
    box-shadow: var(--shadow-xl);
    z-index: 100;
    opacity: 0;
    transform: scale(0);
}

.floating-back-btn.show {
    opacity: 1;
    transform: scale(1);
}

.floating-back-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 8px 20px rgba(31, 41, 55, 0.4);
}

.floating-back-btn:active {
    transform: scale(0.95);
}

.hotlist-info {
    flex: 1;
}

.hotlist-info h2 {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--primary-color);
}

.hotlist-meta {
    display: flex;
    gap: 24px;
    color: var(--text-secondary);
    font-size: 14px;
}

.hotlist-meta span {
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ==================== 热榜项目列表 ==================== */
.hotlist-items {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.hotlist-item {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    padding: 20px;
    display: flex;
    gap: 20px;
    align-items: flex-start;
    border: 2px solid var(--border-color);
    transition: var(--transition);
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    position: relative;
    overflow: hidden;
}

.hotlist-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--primary-color);
    transform: scaleY(0);
    transition: var(--transition);
}

.hotlist-item:hover {
    transform: translateX(8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
    background: linear-gradient(90deg, var(--bg-primary), rgba(31, 41, 55, 0.03));
}

.hotlist-item:hover::before {
    transform: scaleY(1);
}

.hotlist-item:active {
    transform: translateX(4px);
}

.item-rank {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: 700;
    flex-shrink: 0;
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

.item-rank.top-1 {
    background: #1f2937;
    color: white;
}

.item-rank.top-2 {
    background: #374151;
    color: white;
}

.item-rank.top-3 {
    background: #4b5563;
    color: white;
}

.item-cover {
    width: 120px;
    height: 80px;
    border-radius: 8px;
    object-fit: cover;
    flex-shrink: 0;
    background: var(--bg-secondary);
}

.item-cover-placeholder {
    width: 120px;
    height: 80px;
    border-radius: 8px;
    flex-shrink: 0;
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    font-size: 32px;
    border: 2px dashed var(--border-color);
}

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

.item-title {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    line-height: 1.5;
}

.item-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.item-footer {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: 13px;
    color: var(--text-tertiary);
}

.item-hot {
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--danger-color);
    font-weight: 600;
}

.item-hot i {
    animation: fire 1.5s ease-in-out infinite;
}

@keyframes fire {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.2); }
}

/* ==================== 加载动画 ==================== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.3s ease-in-out;
}

.loading-overlay.hidden {
    display: none;
}

.loading-spinner {
    text-align: center;
    color: white;
    background: rgba(255, 255, 255, 0.1);
    padding: 40px 60px;
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
}

.loading-spinner i {
    font-size: 48px;
    margin-bottom: 16px;
    color: white;
}

.loading-spinner p {
    font-size: 16px;
    font-weight: 500;
}

/* 骨架屏动画 */
@keyframes shimmer {
    0% {
        background-position: -1000px 0;
    }
    100% {
        background-position: 1000px 0;
    }
}

.skeleton {
    background: linear-gradient(90deg, var(--bg-secondary) 25%, var(--bg-tertiary) 50%, var(--bg-secondary) 75%);
    background-size: 2000px 100%;
    animation: shimmer 2s infinite;
    border-radius: 8px;
}

.skeleton-card {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    padding: 24px;
    border: 2px solid var(--border-color);
}

.skeleton-icon {
    width: 56px;
    height: 56px;
    margin-bottom: 16px;
}

.skeleton-title {
    height: 24px;
    margin-bottom: 8px;
}

.skeleton-desc {
    height: 16px;
    width: 80%;
}

/* ==================== 页脚 ==================== */
.footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border-color);
    padding: 32px 0;
    text-align: center;
    color: var(--text-secondary);
    margin-top: auto;
}

.footer p {
    margin: 8px 0;
    font-size: 14px;
}

.footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

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

/* ==================== 空状态 ==================== */
.empty-state {
    text-align: center;
    padding: 80px 20px;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 64px;
    margin-bottom: 20px;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 24px;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.empty-state p {
    font-size: 16px;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 1024px) {
    .platforms-grid {
        grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
    
    .header-content {
        padding: 16px 0;
    }
    
    .logo {
        gap: 12px;
    }
    
    .logo-icon {
        width: 40px;
        height: 40px;
    }
    
    .logo h1 {
        font-size: 22px;
    }
    
    .logo-subtitle {
        font-size: 10px;
    }
    
    .help-btn,
    .refresh-btn,
    .theme-toggle {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    .main {
        padding: 24px 0;
    }
    
    .search-section {
        gap: 20px;
    }
    
    .stats-bar {
        padding: 12px 16px;
        gap: 16px;
        font-size: 13px;
    }
    
    .stat-item strong {
        font-size: 16px;
    }
    
    .platforms-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
        gap: 16px;
    }
    
    .platform-card {
        padding: 20px;
    }
    
    .platform-card:hover {
        transform: translateY(-4px) scale(1.01);
    }
    
    .filter-buttons {
        overflow-x: auto;
        flex-wrap: nowrap;
        padding-bottom: 8px;
        -webkit-overflow-scrolling: touch;
    }
    
    .filter-btn {
        flex-shrink: 0;
        padding: 10px 20px;
    }
    
    .hotlist-header {
        flex-direction: column;
        align-items: flex-start;
        padding: 20px;
        top: 73px;
    }
    
    .back-btn-large {
        padding: 10px 20px;
        font-size: 15px;
    }
    
    .floating-back-btn {
        bottom: 24px;
        right: 24px;
        width: 52px;
        height: 52px;
        font-size: 22px;
    }
    
    .hotlist-info h2 {
        font-size: 24px;
    }
    
    .hotlist-item {
        flex-direction: column;
        padding: 16px;
    }
    
    .item-rank {
        width: 40px;
        height: 40px;
        font-size: 18px;
    }
    
    .item-cover,
    .item-cover-placeholder {
        width: 100%;
        height: 180px;
    }
    
    .item-title {
        font-size: 16px;
    }
    
    .item-desc {
        font-size: 13px;
    }
    
    .toast {
        right: 16px;
        left: 16px;
        min-width: auto;
    }
    
    .loading-spinner {
        padding: 32px 48px;
    }
}

@media (max-width: 480px) {
    .logo {
        gap: 10px;
    }
    
    .logo-icon {
        width: 36px;
        height: 36px;
    }
    
    .logo h1 {
        font-size: 20px;
    }
    
    .logo-subtitle {
        display: none;
    }
    
    .refresh-btn,
    .theme-toggle {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    .platforms-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-bar {
        flex-direction: column;
        gap: 12px;
        align-items: flex-start;
    }
    
    .hotlist-meta {
        flex-direction: column;
        gap: 8px;
    }
    
    .back-btn-large {
        padding: 8px 16px;
        font-size: 14px;
    }
    
    .back-btn-large span {
        display: none;
    }
    
    .floating-back-btn {
        bottom: 20px;
        right: 20px;
        width: 48px;
        height: 48px;
        font-size: 20px;
    }
    
    .footer p {
        font-size: 13px;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .platform-card:hover::after {
        width: 0;
        height: 0;
    }
    
    .platform-card:active {
        transform: scale(0.98);
    }
    
    .hotlist-item:hover {
        transform: none;
    }
    
    .hotlist-item:active {
        transform: scale(0.99);
    }
}

/* ==================== 模态框 ==================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    animation: fadeIn 0.3s ease-in-out;
    padding: 20px;
}

.modal-overlay.hidden {
    display: none;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--border-radius);
    max-width: 600px;
    width: 100%;
    max-height: 80vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-xl);
    animation: slideUp 0.3s ease-in-out;
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    padding: 24px;
    border-bottom: 2px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 12px;
}

.modal-header i {
    color: var(--primary-color);
}

.modal-close {
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 50%;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: var(--transition);
}

.modal-close:hover {
    background: var(--danger-color);
    color: white;
    transform: rotate(90deg);
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
}

.help-section {
    margin-bottom: 32px;
}

.help-section:last-child {
    margin-bottom: 0;
}

.help-section h4 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.shortcut-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.shortcut-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.shortcut-item kbd {
    display: inline-block;
    padding: 4px 12px;
    background: var(--bg-primary);
    border: 2px solid var(--border-color);
    border-radius: 6px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    box-shadow: 0 2px 0 var(--border-color);
}

.shortcut-item span {
    color: var(--text-secondary);
    font-size: 14px;
}

.feature-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--text-secondary);
    font-size: 15px;
    padding: 8px 0;
}

.feature-list i {
    color: var(--success-color);
    font-size: 16px;
}

.feature-list li:has(.fa-info-circle) i {
    color: var(--primary-color);
}

/* ==================== Toast 提示 ==================== */
.toast {
    position: fixed;
    top: 90px;
    right: 24px;
    background: var(--bg-primary);
    color: var(--text-primary);
    padding: 16px 24px;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-xl);
    border: 2px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 10000;
    transform: translateX(400px);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 250px;
}

.toast.show {
    transform: translateX(0);
    opacity: 1;
}

.toast i {
    font-size: 20px;
}

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

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

.toast-warning i {
    color: var(--warning-color);
}

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

.toast span {
    font-size: 15px;
    font-weight: 500;
}

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

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

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

::-webkit-scrollbar-thumb:hover {
    background: var(--text-tertiary);
}

/* ==================== 辅助功能 ==================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* 聚焦样式 */
*:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

button:focus-visible,
a:focus-visible,
input:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}


/* 相关工具推荐 - 隐藏显示但保留SEO链接 */
.related-tools-seo {
    display: none;
}

/* 友情链接美化 */
.footer-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-top: 12px;
    font-size: 0.9rem;
}

.footer-link {
    color: var(--text-primary, rgba(255, 255, 255, 0.9));
    text-decoration: none;
    transition: all 0.3s ease;
    padding: 4px 8px;
    border-radius: 4px;
    font-weight: 500;
}

.footer-link:hover {
    color: var(--primary-color, #667eea);
    background: rgba(102, 126, 234, 0.1);
    transform: translateY(-1px);
}

.footer-separator {
    color: var(--text-secondary, rgba(255, 255, 255, 0.6));
}