/* 糖心vlog官方网站样式 */

:root {
    --primary-color: #ff6b9d;
    --primary-dark: #e55a8a;
    --secondary-color: #4ecdc4;
    --accent-color: #45b7d1;
    --danger-color: #ff6b6b;
    --warning-color: #feca57;
    --success-color: #48cae4;
    --info-color: #74b9ff;
    
    --vlog-primary: #ff6b9d;
    --vlog-secondary: #4ecdc4;
    --vlog-accent: #45b7d1;
    --vlog-hot: #feca57;
    --vlog-new: #48cae4;
    
    --text-primary: #2d3436;
    --text-secondary: #636e72;
    --text-muted: #b2bec3;
    --text-white: #ffffff;
    --text-vlog: #2d3436;
    
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --bg-vlog: #fafbfc;
    --bg-dark: #2d3436;
    --bg-card: #ffffff;
    
    --border-color: #dee2e6;
    --border-light: #e9ecef;
    --border-vlog: #ced6e0;
    
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --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);
    --shadow-vlog: 0 2px 10px rgba(255, 107, 157, 0.15);
    
    --gradient-vlog: linear-gradient(135deg, #ff6b9d 0%, #4ecdc4 100%);
    --gradient-hot: linear-gradient(135deg, #feca57 0%, #ff9ff3 100%);
    --gradient-new: linear-gradient(135deg, #48cae4 0%, #0077b6 100%);
    --gradient-hero: linear-gradient(135deg, #ff6b9d 0%, #4ecdc4 50%, #45b7d1 100%);
    
    --border-radius: 16px;
    --border-radius-sm: 12px;
    --border-radius-lg: 20px;
    --border-radius-vlog: 14px;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease-out;
    
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
    
    --container-max-width: 1200px;
    --container-padding: 20px;
}

/* 基础样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-vlog);
    background: var(--bg-vlog);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img, svg {
    max-width: 100%;
    height: auto;
    display: block;
    border-radius: var(--border-radius-sm);
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    outline: none;
    transition: var(--transition);
}

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

/* 容器样式 */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* 顶部导航 */
.navbar {
    background: var(--bg-primary);
    border-bottom: 2px solid var(--border-vlog);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 16px 0;
    box-shadow: var(--shadow-vlog);
}

.nav-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 16px;
}

.nav-logo {
    width: 50px;
    height: 50px;
    border-radius: var(--border-radius-vlog);
}

.nav-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--vlog-primary);
}

.nav-subtitle {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 2px;
}

.nav-status {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--gradient-new);
    color: var(--text-white);
    padding: 8px 16px;
    border-radius: 25px;
    font-size: 0.875rem;
    font-weight: 600;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--text-white);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.6; }
}

/* 主要内容区域 */
.main-content {
    min-height: calc(100vh - 100px);
}

/* 头部横幅 */
.hero {
    background: var(--gradient-hero);
    color: var(--text-white);
    padding: 60px 0;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="vlog-pattern" width="20" height="20" patternUnits="userSpaceOnUse"><rect width="20" height="20" fill="none"/><circle cx="10" cy="10" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23vlog-pattern)"/></svg>');
    opacity: 0.4;
}

.hero-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    position: relative;
    z-index: 1;
}

.hero-content {
    text-align: center;
    margin-bottom: 40px;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 16px;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: 20px;
    opacity: 0.9;
}

.hero-description {
    font-size: 1rem;
    line-height: 1.7;
    max-width: 800px;
    margin: 0 auto 24px;
    opacity: 0.85;
}

.hero-domain {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-white);
    padding: 10px 20px;
    border-radius: 25px;
    font-size: 0.875rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 2.25rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-white);
}

.stat-label {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* 区域样式 */
section {
    padding: 60px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* 入口区域 */
.entrance-section {
    background: var(--bg-primary);
}

.entrance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
    max-width: 900px;
    margin: 0 auto;
}

.entrance-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-lg);
    border: 2px solid var(--border-color);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.entrance-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient-vlog);
}

.entrance-card.featured::before {
    background: var(--gradient-new);
}

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

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
}

.card-icon {
    width: 80px;
    height: 80px;
    border-radius: var(--border-radius-vlog);
}

.card-badge {
    background: var(--gradient-new);
    color: var(--text-white);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.card-description {
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.6;
}

.card-url {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-vlog);
    border-radius: var(--border-radius-sm);
    padding: 12px 16px;
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 0.875rem;
    color: var(--vlog-primary);
    margin-bottom: 24px;
    word-break: break-all;
}

.card-status {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.status-online {
    background: var(--success-color);
    color: var(--text-white);
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.response-time {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.card-button {
    width: 100%;
    background: var(--gradient-vlog);
    color: var(--text-white);
    border: none;
    padding: 16px 32px;
    border-radius: var(--border-radius-vlog);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-button.primary {
    background: var(--gradient-new);
}

.card-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* 通道区域 */
.channels-section {
    background: var(--bg-secondary);
}

.channels-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.channel-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-vlog);
    padding: 24px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

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

.channel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.channel-icon {
    width: 50px;
    height: 50px;
    border-radius: var(--border-radius-sm);
}

.channel-region {
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-weight: 600;
    background: var(--bg-tertiary);
    padding: 4px 8px;
    border-radius: 12px;
}

.channel-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.channel-url {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-vlog);
    border-radius: var(--border-radius-sm);
    padding: 8px 12px;
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 0.75rem;
    color: var(--vlog-primary);
    margin-bottom: 16px;
    word-break: break-all;
}

.channel-stats {
    display: flex;
    justify-content: space-between;
    margin-bottom: 20px;
}

.channel-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.channel-stat .stat-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.channel-stat .stat-value {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
}

.channel-button {
    width: 100%;
    background: var(--vlog-accent);
    color: var(--text-white);
    border: none;
    padding: 12px 24px;
    border-radius: var(--border-radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.channel-button:hover {
    background: #3a9bc1;
    transform: translateY(-1px);
}

/* 功能导航区域 */
.features-section {
    background: var(--bg-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-vlog);
    padding: 32px 24px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-hot);
}

.feature-card.new::before {
    background: var(--gradient-new);
}

.feature-card.guide::before {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
}

.feature-card.help::before {
    background: linear-gradient(135deg, #ec4899 0%, #db2777 100%);
}

.feature-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

.feature-icon {
    margin: 0 auto 20px;
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius-sm);
}

.feature-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.feature-description {
    color: var(--text-secondary);
    margin-bottom: 24px;
    line-height: 1.6;
    font-size: 0.875rem;
}

.feature-button {
    background: var(--gradient-hot);
    color: var(--text-white);
    border: none;
    padding: 10px 20px;
    border-radius: var(--border-radius-sm);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.feature-button.new {
    background: var(--gradient-new);
}

.feature-button.guide {
    background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%);
}

.feature-button.help {
    background: linear-gradient(135deg, #ec4899 0%, #db2777 100%);
}

.feature-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* 公告区域 */
.announcement-section {
    background: var(--bg-secondary);
}

.announcement-container {
    max-width: 800px;
    margin: 0 auto;
}

.announcement-card {
    background: var(--bg-card);
    border-radius: var(--border-radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-lg);
    border-left: 4px solid var(--vlog-primary);
}

.announcement-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.announcement-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-vlog);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-white);
    font-weight: 700;
}

.announcement-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
}

.announcement-content {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 24px;
}

.announcement-list {
    list-style: none;
    margin-bottom: 24px;
}

.announcement-list li {
    padding: 8px 0;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-secondary);
    position: relative;
    padding-left: 20px;
}

.announcement-list li::before {
    content: '•';
    color: var(--vlog-primary);
    font-weight: bold;
    position: absolute;
    left: 0;
}

.announcement-list li:last-child {
    border-bottom: none;
}

.announcement-footer {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-light);
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* 底部区域 */
.footer {
    background: var(--bg-dark);
    color: var(--text-white);
    padding: 50px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    margin-bottom: 30px;
}

.footer-brand {
    max-width: 400px;
}

.footer-logo {
    width: 60px;
    height: 60px;
    border-radius: var(--border-radius-vlog);
    margin-bottom: 20px;
}

.footer-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-description {
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
    font-size: 0.875rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 30px;
}

.footer-column-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-white);
}

.footer-link-list {
    list-style: none;
}

.footer-link-list li {
    margin-bottom: 8px;
}

.footer-link {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    transition: var(--transition);
}

.footer-link:hover {
    color: var(--text-white);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    text-align: center;
}

.footer-copyright {
    color: rgba(255, 255, 255, 0.8);
    font-size: 0.875rem;
    margin-bottom: 8px;
}

.footer-keywords {
    color: rgba(255, 255, 255, 0.6);
    font-size: 0.75rem;
}

/* 返回顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--gradient-vlog);
    color: var(--text-white);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

/* 通知系统 */
.notification {
    position: fixed;
    top: 100px;
    right: 20px;
    background: var(--bg-card);
    color: var(--text-primary);
    padding: 16px 20px;
    border-radius: var(--border-radius-vlog);
    box-shadow: var(--shadow-xl);
    z-index: 2000;
    transform: translateX(400px);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    max-width: 350px;
    border-left: 4px solid var(--vlog-primary);
    font-size: 0.875rem;
}

.notification.show {
    transform: translateX(0);
}

.notification.success {
    border-left-color: var(--success-color);
}

.notification.warning {
    border-left-color: var(--warning-color);
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    :root {
        --container-padding: 16px;
    }
    
    .hero-title {
        font-size: 2.25rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-stats {
        gap: 30px;
    }
    
    .stat-number {
        font-size: 1.875rem;
    }
    
    .section-title {
        font-size: 1.875rem;
    }
    
    .entrance-grid {
        grid-template-columns: 1fr;
    }
    
    .channels-grid {
        grid-template-columns: 1fr;
    }
    
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .nav-container {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
    
    section {
        padding: 50px 0;
    }
    
    .hero {
        padding: 50px 0;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.875rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.625rem;
    }
    
    .entrance-card,
    .announcement-card {
        padding: 24px;
    }
    
    .channel-card,
    .feature-card {
        padding: 20px;
    }
    
    .hero-stats {
        gap: 25px;
    }
    
    .stat-number {
        font-size: 1.625rem;
    }
}