/* 
 * c7娱乐 - 游戏娱乐网站样式
 * 移动优先响应式设计
 * 2026年SEO优化版本
 */

/* CSS变量定义 - 独特配色方案 */
:root {
    --primary-color: #6B21A8;
    --primary-light: #9333EA;
    --primary-dark: #4C1D95;
    --secondary-color: #F59E0B;
    --secondary-light: #FBBF24;
    --accent-color: #EC4899;
    --success-color: #10B981;
    --warning-color: #F97316;
    --danger-color: #EF4444;
    --dark-bg: #0F0A1A;
    --card-bg: #1A1025;
    --card-hover: #251538;
    --text-primary: #FFFFFF;
    --text-secondary: #C4B5D4;
    --text-muted: #8B7A9E;
    --border-color: #3D2A5A;
    --gradient-primary: linear-gradient(135deg, #6B21A8 0%, #9333EA 50%, #EC4899 100%);
    --gradient-gold: linear-gradient(135deg, #F59E0B 0%, #FBBF24 50%, #FCD34D 100%);
    --gradient-dark: linear-gradient(180deg, #0F0A1A 0%, #1A1025 100%);
    --shadow-glow: 0 0 30px rgba(147, 51, 234, 0.3);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
    --font-primary: 'Noto Sans SC', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-display: 'Noto Serif SC', serif;
    --border-radius: 16px;
    --border-radius-sm: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* 基础重置 */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    background: var(--dark-bg);
    color: var(--text-primary);
    line-height: 1.8;
    min-height: 100vh;
    overflow-x: hidden;
}

/* 图片优化 */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* 链接样式 */
a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--secondary-light);
}

/* 容器 */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 16px;
}

/* 头部导航 - 非sticky */
.site-header {
    background: var(--gradient-dark);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 0;
    position: relative;
    z-index: 100;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.logo-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-wrapper img {
    height: 48px;
    width: auto;
}

.site-title {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 700;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 移动端菜单按钮 */
.menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.menu-toggle span {
    width: 28px;
    height: 3px;
    background: var(--secondary-color);
    border-radius: 2px;
    transition: var(--transition);
}

/* 主导航 */
.main-nav {
    display: none;
    width: 100%;
    padding-top: 16px;
}

.main-nav.active {
    display: block;
}

.nav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.nav-list li a {
    display: block;
    padding: 12px 16px;
    background: var(--card-bg);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-weight: 500;
    transition: var(--transition);
}

.nav-list li a:hover,
.nav-list li a.active {
    background: var(--primary-color);
    color: var(--text-primary);
}

/* CTA按钮 */
.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    background: var(--gradient-gold);
    color: var(--dark-bg);
    font-weight: 700;
    font-size: 1rem;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 20px rgba(245, 158, 11, 0.4);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(245, 158, 11, 0.6);
    color: var(--dark-bg);
}

/* Hero区域 */
.hero-section {
    position: relative;
    padding: 40px 0;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at center, rgba(147, 51, 234, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: var(--gradient-primary);
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 20px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.hero-title {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.3;
    margin-bottom: 16px;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-image {
    margin-top: 32px;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-glow);
}

.hero-image img {
    width: 100%;
    height: auto;
}

/* 特色区块 */
.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
    margin: 32px 0;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 24px;
    text-align: center;
    transition: var(--transition);
}

.feature-card:hover {
    background: var(--card-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-glow);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 28px;
}

.feature-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--secondary-color);
}

.feature-desc {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 游戏卡片网格 */
.games-section {
    padding: 48px 0;
}

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

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: var(--primary-color);
    border-radius: 50px;
    font-size: 0.8125rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.section-title {
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 800;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.section-desc {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
}

.games-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
}

.game-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
}

.game-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-glow);
    border-color: var(--primary-light);
}

.game-image {
    position: relative;
    aspect-ratio: 16/10;
    overflow: hidden;
}

.game-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.game-card:hover .game-image img {
    transform: scale(1.08);
}

.game-badge {
    position: absolute;
    top: 12px;
    left: 12px;
    padding: 4px 12px;
    background: var(--accent-color);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
}

.game-info {
    padding: 16px;
}

.game-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.game-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.game-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.8125rem;
}

.game-rtp {
    color: var(--success-color);
    font-weight: 600;
}

.game-provider {
    color: var(--text-muted);
}

/* 内容区块 */
.content-section {
    padding: 48px 0;
    border-top: 1px solid var(--border-color);
}

.content-block {
    margin-bottom: 40px;
}

.content-block h2 {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--secondary-color);
    padding-bottom: 12px;
    border-bottom: 2px solid var(--primary-color);
}

.content-block h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 24px 0 12px;
    color: var(--text-primary);
}

.content-block p {
    margin-bottom: 16px;
    color: var(--text-secondary);
    text-align: justify;
}

.content-block ul, .content-block ol {
    margin: 16px 0;
    padding-left: 24px;
    color: var(--text-secondary);
}

.content-block li {
    margin-bottom: 8px;
}

/* 支付方式 */
.payment-section {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 32px 20px;
    margin: 32px 0;
}

.payment-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-top: 24px;
}

.payment-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px;
    background: var(--dark-bg);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
}

.payment-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-gold);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    flex-shrink: 0;
}

.payment-info h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.payment-info p {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin: 0;
}

/* FAQ区块 */
.faq-section {
    padding: 48px 0;
}

.faq-list {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 12px;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 20px;
    background: transparent;
    border: none;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--card-hover);
}

.faq-icon {
    width: 28px;
    height: 28px;
    background: var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    transition: var(--transition);
    flex-shrink: 0;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
    background: var(--secondary-color);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer-inner {
    padding: 0 20px 20px;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 用户评论 */
.reviews-section {
    padding: 48px 0;
    background: var(--gradient-dark);
}

.reviews-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 20px;
}

.review-card {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 24px;
}

.review-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.review-avatar {
    width: 56px;
    height: 56px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    flex-shrink: 0;
}

.review-info h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.review-location {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

.review-rating {
    display: flex;
    gap: 4px;
    margin-bottom: 12px;
}

.star {
    color: var(--secondary-color);
    font-size: 18px;
}

.review-content {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 12px;
}

.review-date {
    font-size: 0.8125rem;
    color: var(--text-muted);
}

/* 牌照区块 */
.license-section {
    padding: 32px 0;
    text-align: center;
}

.license-badge {
    display: inline-block;
    margin: 16px;
}

.license-badge img {
    height: 80px;
    width: auto;
}

.license-info {
    margin-top: 20px;
    padding: 20px;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.license-info p {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    margin-bottom: 8px;
}

/* 页脚 */
.site-footer {
    background: var(--card-bg);
    border-top: 1px solid var(--border-color);
    padding: 48px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 32px;
    margin-bottom: 32px;
}

.footer-section h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--secondary-color);
}

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

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--secondary-color);
    padding-left: 8px;
}

.footer-social {
    display: flex;
    gap: 12px;
    margin-top: 16px;
}

.social-link {
    width: 44px;
    height: 44px;
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
}

.footer-payment {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 16px;
}

.footer-payment img {
    height: 32px;
    width: auto;
    border-radius: 4px;
}

.footer-bottom {
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-bottom: 8px;
}

.age-restriction {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--danger-color);
    border-radius: 50px;
    font-weight: 700;
    font-size: 0.875rem;
    margin-top: 16px;
}

/* 面包屑导航 */
.breadcrumb {
    padding: 16px 0;
    font-size: 0.875rem;
}

.breadcrumb-list {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    list-style: none;
    align-items: center;
}

.breadcrumb-list li::after {
    content: '›';
    margin-left: 8px;
    color: var(--text-muted);
}

.breadcrumb-list li:last-child::after {
    display: none;
}

.breadcrumb-list a {
    color: var(--text-secondary);
}

.breadcrumb-list a:hover {
    color: var(--secondary-color);
}

.breadcrumb-list .current {
    color: var(--text-muted);
}

/* 作者信息 */
.author-box {
    display: flex;
    gap: 20px;
    padding: 24px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin: 32px 0;
}

.author-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
}

.author-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.author-info h4 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.author-title {
    font-size: 0.875rem;
    color: var(--primary-light);
    margin-bottom: 8px;
}

.author-bio {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 标签页面 */
.tags-section {
    padding: 48px 0;
}

.tags-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.tag-link {
    display: inline-block;
    padding: 10px 20px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-secondary);
    font-size: 0.9375rem;
    transition: var(--transition);
}

.tag-link:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--text-primary);
}

/* APP下载页面 */
.app-section {
    padding: 48px 0;
    text-align: center;
}

.app-preview {
    max-width: 400px;
    margin: 32px auto;
}

.app-preview img {
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-glow);
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: 16px;
    max-width: 300px;
    margin: 32px auto;
}

.download-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 16px 24px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-weight: 600;
    transition: var(--transition);
}

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

.download-btn .icon {
    font-size: 28px;
}

/* 响应式设计 - 平板 */
@media (min-width: 640px) {
    .container {
        padding: 0 24px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .games-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .payment-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .reviews-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .download-buttons {
        flex-direction: row;
        max-width: 500px;
    }
}

/* 响应式设计 - 桌面 */
@media (min-width: 1024px) {
    .menu-toggle {
        display: none;
    }
    
    .main-nav {
        display: block;
        width: auto;
        padding-top: 0;
    }
    
    .nav-list {
        flex-direction: row;
        gap: 4px;
    }
    
    .nav-list li a {
        padding: 10px 18px;
        background: transparent;
    }
    
    .nav-list li a:hover,
    .nav-list li a.active {
        background: var(--primary-color);
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .features-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .games-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 24px;
    }
    
    .section-title {
        font-size: 2.25rem;
    }
    
    .content-block h2 {
        font-size: 1.75rem;
    }
    
    .payment-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .reviews-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* 响应式设计 - 大屏 */
@media (min-width: 1280px) {
    .container {
        padding: 0 32px;
    }
    
    .hero-title {
        font-size: 3.5rem;
    }
    
    .games-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* 打印样式 */
@media print {
    .site-header,
    .site-footer,
    .cta-button {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
}

/* 无障碍优化 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 焦点样式 */
:focus-visible {
    outline: 2px solid var(--secondary-color);
    outline-offset: 2px;
}

/* 选中文本样式 */
::selection {
    background: var(--primary-color);
    color: var(--text-primary);
}