/* 根变量定义 */
:root {
    /* 基础字号设置 */
    font-size: 16px;
    
    /* 颜色系统 */
    --primary-color: #2c3e50;
    --secondary-color: #34495e;
    --accent-color: #3498db;
    --success-color: #2ecc71;
    --warning-color: #f1c40f;
    --danger-color: #e74c3c;
    --background-color: #f8f9fa;
    --card-background: #ffffff;
    
    /* 字体大小 */
    --base-font-size: 1rem;
    --small-font-size: 0.875rem;
    --smaller-font-size: 0.75rem;
    --title-font-size: 1.125rem;
    
    /* 间距 */
    --spacing-unit: 8px;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.2rem;
    
    /* 过渡动画 */
    --transition-fast: 0.2s;
    --transition-normal: 0.3s;
}

/* 基础重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

/* 基础样式 */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    font-size: 14px;
    line-height: 1.5;
    background-color: var(--background-color);
    color: var(--primary-color);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* 布局容器 */
.container {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

/* 卡片样式 */
.card {
    background: var(--card-background);
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-lg);
    font-size: 0.9rem;
    border: 1px solid rgba(0,0,0,0.05);
    transition: box-shadow 0.3s ease, transform 0.3s ease;
}

.card:hover {
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
    transform: translateY(-1px);
}

/* 提示框样式 */
.notice {
    background: #fff3cd;
    border-left: 4px solid #ffc107;
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    font-size: 0.9rem;
    border-radius: 8px;
}

.notice ul {
    margin-left: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.notice li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

/* 域名组样式 */
.domain-group {
    margin-bottom: var(--spacing-lg);
}

.domain-group-title {
    font-size: var(--title-font-size);
    color: #666;
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-md);
    border-left: 3px solid var(--accent-color);
    font-weight: 500;
}

/* 域名状态样式 */
.domain-status {
    display: flex;
    flex-direction: column;
    padding: var(--spacing-md);
    border-radius: 8px;
    margin-bottom: var(--spacing-md);
    background: #fff;
    border: 1px solid rgba(0,0,0,0.05);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.domain-status:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.domain-info {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

/* 状态指示器 */
.status-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    margin-right: var(--spacing-md);
    position: relative;
    flex-shrink: 0;
    aspect-ratio: 1/1;
}

.status-online { 
    background-color: var(--success-color);
}

.status-offline { 
    background-color: var(--danger-color);
}

.status-checking { 
    background-color: var(--warning-color);
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.5; }
    100% { opacity: 1; }
}

.domain-name {
    margin-right: var(--spacing-md);
    font-weight: 500;
}

/* 标签样式 */
.tag-container {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    align-items: center;
}

.recommended-tag,
.not-recommended-tag,
.unavailable-tag,
.default-tag {
    padding: 3px 8px;
    border-radius: 12px;
    font-size: var(--smaller-font-size);
    font-weight: 500;
    text-transform: none;
    letter-spacing: 0.3px;
    line-height: 1;
    transition: background-color 0.2s ease;
    margin-right: 0.5rem;
}

.recommended-tag:last-child,
.not-recommended-tag:last-child,
.unavailable-tag:last-child,
.default-tag:last-child {
    margin-right: 0;
}

.recommended-tag {
    background: rgba(46, 125, 50, 0.1);
    color: #2e7d32;
}

.not-recommended-tag {
    background: rgba(239, 108, 0, 0.1);
    color: #ef6c00;
}

.unavailable-tag {
    background: rgba(198, 40, 40, 0.1);
    color: #c62828;
}

.default-tag {
    background: rgba(21, 101, 192, 0.1);
    color: #1565c0;
}

/* URL容器样式 */
.url-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    word-break: break-all;
}

/* 链接样式 */
.domain-link {
    color: var(--accent-color);
    text-decoration: none;
    position: relative;
    padding-bottom: 2px;
    transition: color 0.2s ease;
}

.domain-link:after {
    content: '';
    position: absolute;
    width: 0;
    height: 1px;
    bottom: 0;
    left: 0;
    background-color: var(--accent-color);
    transition: width 0.3s ease;
}

.domain-link:hover:after {
    width: 100%;
}

.latency-tag {
    color: #666;
    font-size: var(--smaller-font-size);
    background: rgba(0,0,0,0.05);
    padding: 2px 6px;
    border-radius: 4px;
    margin-left: var(--spacing-md);
    white-space: nowrap;
}

/* 广告样式 */
.caiyun-space {
    padding: var(--spacing-lg);
    background: linear-gradient(to right, #f1f8ff, #e3f2fd);
    border-radius: 8px;
    margin: var(--spacing-lg) 0;
    border: 1px solid rgba(52, 152, 219, 0.1);
}

.caiyun {
    text-align: left;
    line-height: 1.6;
    color: #2c3e50;
}

.caiyun a {
    color: var(--accent-color);
    text-decoration: none;
    margin: 0 0.5rem;
    font-weight: 500;
    transition: color 0.2s ease;
}

.caiyun a:hover {
    color: #2c80b9;
}

/* 社交链接样式 */
.social-links {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.social-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    border-radius: 8px;
    background: var(--accent-color);
    color: white;
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    transition: background-color 0.2s ease, transform 0.2s ease;
    flex: 1;
}

.social-button:hover {
    background: #2c80b9;
    transform: translateY(-1px);
}

/* 更新时间样式 */
.update-time {
    font-size: var(--smaller-font-size);
    color: #666;
    text-align: right;
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(0,0,0,0.05);
}

/* 更新日志样式 */
.changelog {
    margin-top: var(--spacing-md);
}

.changelog-item {
    padding: var(--spacing-md);
    border-bottom: 1px solid rgba(0,0,0,0.05);
    transition: background-color 0.2s ease;
}

.changelog-item:hover {
    background-color: rgba(0,0,0,0.01);
}

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

.changelog-date {
    font-weight: 600;
    color: var(--accent-color);
    margin-bottom: var(--spacing-md);
    font-size: 0.9rem;
}

.changelog-changes {
    list-style-type: none;
    padding-left: var(--spacing-lg);
}

.changelog-changes li {
    position: relative;
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    line-height: 1.5;
}

.changelog-changes li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--accent-color);
}

/* 响应式设计 */
@media (min-width: 768px) {
    .domain-status {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
    
    .domain-info {
        margin-bottom: 0;
        margin-right: var(--spacing-md);
    }
}

@media (max-width: 767px) {
    :root {
        font-size: calc(14px + 2 * (100vw - 320px) / 448);
    }
    
    .social-links {
        flex-direction: column;
    }
    
    .container {
        padding: var(--spacing-sm);
    }
    
    .card {
        padding: var(--spacing-md);
    }
}
/* 高DPI屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .card,
    .domain-status,
    .notice {
        border-width: 0.5px;
    }

    body {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}

/* 暗色模式支持 */
@media (prefers-color-scheme: dark) {
    :root {
        --background-color: #1a1a1a;
        --card-background: #2d2d2d;
        --primary-color: #ffffff;
        --secondary-color: #cccccc;
    }

    .domain-link {
        color: #66b3ff;
    }

    .card,
    .domain-status {
        border-color: rgba(255, 255, 255, 0.1);
    }

    .notice {
        background: rgba(255, 193, 7, 0.1);
        border-left-color: #ffc107;
    }
}

/* 打印样式优化 */
@media print {
    .social-links,
    .ad-space {
        display: none;
    }

    body {
        background: white;
    }

    .card,
    .domain-status {
        break-inside: avoid;
        border: 1px solid #ddd;
        box-shadow: none;
    }
}

/* 安全区域适配 */
@supports (padding: env(safe-area-inset-bottom)) {
    .container {
        padding-left: max(var(--spacing-md), env(safe-area-inset-left));
        padding-right: max(var(--spacing-md), env(safe-area-inset-right));
        padding-bottom: max(var(--spacing-md), env(safe-area-inset-bottom));
    }
}