/* 足球直播品牌网站 - 全局样式表 */
/* 现代简约风格 + 顶奢数据看板 */

:root {
    --primary-color: #1e40af;
    --secondary-color: #ff8c00;
    --accent-color: #f97316;
    --dark-bg: #0f172a;
    --light-bg: #ffffff;
    --text-dark: #1e293b;
    --text-light: #64748b;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--light-bg);
    overflow-x: hidden;
}

/* 顶部导航栏 */
.header {
    background: linear-gradient(135deg, var(--dark-bg) 0%, #1a2a4a 100%);
    color: white;
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-lg);
    border-bottom: 2px solid var(--secondary-color);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 2rem;
}

.logo-section {
    flex-shrink: 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: white;
    font-weight: 700;
    font-size: 1.25rem;
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.05);
}

.logo-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
}

.logo-text {
    font-size: 1.125rem;
    letter-spacing: 0.5px;
}

/* 导航菜单 */
.nav-menu {
    display: flex;
    gap: 0.5rem;
    flex: 1;
    justify-content: center;
}

.nav-item {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    padding: 0.75rem 1.25rem;
    border-radius: 0.5rem;
    transition: var(--transition);
    font-size: 0.95rem;
    font-weight: 500;
    position: relative;
}

.nav-item:hover {
    color: white;
    background-color: rgba(255, 255, 255, 0.1);
}

.nav-item.active {
    color: var(--secondary-color);
    background-color: rgba(255, 140, 0, 0.15);
    border-bottom: 2px solid var(--secondary-color);
}

/* 搜索框 */
.header-actions {
    flex-shrink: 0;
}

.search-box {
    display: flex;
    gap: 0.5rem;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 0.5rem;
    padding: 0.25rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.search-input {
    flex: 1;
    background: transparent;
    border: none;
    color: white;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    outline: none;
    min-width: 200px;
}

.search-input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

.search-btn {
    background-color: var(--secondary-color);
    color: white;
    border: none;
    padding: 0.5rem 1.25rem;
    border-radius: 0.4rem;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
    font-size: 0.9rem;
}

.search-btn:hover {
    background-color: #e67e00;
    transform: translateY(-2px);
}

/* 面包屑导航 */
.breadcrumb {
    background-color: #f8fafc;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

.breadcrumb-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    font-size: 0.9rem;
    color: var(--text-light);
}

.breadcrumb a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

.breadcrumb a:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

.breadcrumb-separator {
    margin: 0 0.5rem;
    color: var(--text-light);
}

/* 主容器 */
.main-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

/* 数据大屏 - 顶奢看板 */
.data-dashboard {
    background: linear-gradient(135deg, var(--dark-bg) 0%, #1a2a4a 100%);
    color: white;
    padding: 3rem 2rem;
    border-radius: 1rem;
    margin-bottom: 3rem;
    box-shadow: var(--shadow-xl);
    border: 1px solid rgba(255, 140, 0, 0.3);
    position: relative;
    overflow: hidden;
}

.data-dashboard::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(255, 140, 0, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.dashboard-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 2rem;
    text-align: center;
    letter-spacing: 1px;
    position: relative;
    z-index: 1;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
    position: relative;
    z-index: 1;
}

.dashboard-card {
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 140, 0, 0.2);
    padding: 1.5rem;
    border-radius: 0.75rem;
    text-align: center;
    transition: var(--transition);
}

.dashboard-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--secondary-color);
    transform: translateY(-5px);
    box-shadow: 0 0 20px rgba(255, 140, 0, 0.3);
}

.dashboard-card-label {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.dashboard-card-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--secondary-color);
    font-variant-numeric: tabular-nums;
}

.dashboard-card-unit {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    margin-top: 0.5rem;
}

/* 视频卡片网格 */
.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.video-card {
    background: white;
    border-radius: 0.75rem;
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    cursor: pointer;
    border: 1px solid var(--border-color);
}

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

.video-thumbnail {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    overflow: hidden;
    background: linear-gradient(135deg, #e0e7ff 0%, #f3e8ff 100%);
}

.video-thumbnail img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.video-card:hover .video-thumbnail img {
    transform: scale(1.05);
}

.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background-color: rgba(255, 140, 0, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
    z-index: 10;
}

.video-card:hover .video-play-btn {
    opacity: 1;
}

.video-play-btn::after {
    content: '▶';
    color: white;
    font-size: 1.5rem;
    margin-left: 4px;
}

.video-info {
    padding: 1.5rem;
}

.video-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.video-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.video-stats {
    display: flex;
    gap: 1rem;
    font-size: 0.8rem;
    color: var(--text-light);
}

/* 专家卡片 */
.expert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.expert-card {
    background: white;
    border: 1px solid #e8eef5;
    border-radius: 0.75rem;
    padding: 1.5rem;
    text-align: center;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.expert-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--secondary-color);
}

.expert-avatar {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin: 0 auto 1rem;
    object-fit: cover;
    border: 3px solid var(--primary-color);
    transition: var(--transition);
}

.expert-card:hover .expert-avatar {
    border-color: var(--secondary-color);
    transform: scale(1.05);
}

.expert-name {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 0.25rem;
}

.expert-title {
    font-size: 0.9rem;
    color: var(--secondary-color);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.expert-description {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.expert-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
}

.expert-btn {
    flex: 1;
    padding: 0.5rem;
    border: 1px solid var(--primary-color);
    background: white;
    color: var(--primary-color);
    border-radius: 0.4rem;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 600;
    transition: var(--transition);
}

.expert-btn:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* FAQ 手风琴 */
.faq-section {
    margin-bottom: 3rem;
}

.faq-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 2rem;
    text-align: center;
}

.faq-item {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: var(--secondary-color);
    box-shadow: var(--shadow-md);
}

.faq-question {
    padding: 1.25rem;
    background-color: #f8fafc;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    color: var(--text-dark);
    transition: var(--transition);
    user-select: none;
}

.faq-item.active .faq-question {
    background-color: var(--primary-color);
    color: white;
}

.faq-icon {
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    font-weight: 700;
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding: 0 1.25rem;
}

.faq-item.active .faq-answer {
    max-height: 500px;
    padding: 1.25rem;
}

.faq-answer-text {
    color: var(--text-light);
    line-height: 1.8;
}

/* 用户评论 */
.comments-section {
    margin-bottom: 3rem;
}

.comments-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 2rem;
    text-align: center;
}

.comments-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.comment-card {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 1.5rem;
    transition: var(--transition);
}

.comment-card:hover {
    box-shadow: var(--shadow-lg);
    border-color: var(--secondary-color);
    transform: translateY(-3px);
}

.comment-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.comment-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--primary-color);
}

.comment-user-info {
    flex: 1;
}

.comment-user-name {
    font-weight: 600;
    color: var(--text-dark);
    margin-bottom: 0.25rem;
}

.comment-user-role {
    font-size: 0.8rem;
    color: var(--secondary-color);
    font-weight: 600;
}

.comment-rating {
    color: #fbbf24;
    font-size: 0.9rem;
}

.comment-text {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 0.75rem;
}

.comment-date {
    font-size: 0.8rem;
    color: #cbd5e1;
}

/* 页脚 */
.footer {
    background: linear-gradient(135deg, var(--dark-bg) 0%, #1a2a4a 100%);
    color: white;
    padding: 3rem 0 1rem;
    margin-top: 4rem;
    border-top: 2px solid var(--secondary-color);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    font-size: 1.1rem;
    color: var(--secondary-color);
}

.footer-section p {
    font-size: 0.9rem;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 0.5rem;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section a:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

.company-info {
    font-size: 0.85rem;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.social-link {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: rgba(255, 140, 0, 0.2);
    border: 1px solid var(--secondary-color);
    border-radius: 0.4rem;
    transition: var(--transition);
}

.social-link:hover {
    background-color: var(--secondary-color);
    color: white;
    transform: translateY(-2px);
}

.qrcode-section {
    margin-top: 1rem;
}

.qrcode {
    width: 120px;
    height: 120px;
    margin-top: 0.5rem;
    border-radius: 0.4rem;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1.5rem;
}

.footer-bottom-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
}

.copyright,
.update-time,
.icp-info {
    margin-bottom: 0.5rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
    }

    .nav-item {
        padding: 0.5rem 0.75rem;
        font-size: 0.85rem;
    }

    .search-input {
        min-width: 150px;
    }

    .main-container {
        padding: 1rem;
    }

    .dashboard-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .dashboard-card-value {
        font-size: 1.75rem;
    }

    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 1rem;
    }

    .expert-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 1rem;
    }

    .comments-grid {
        grid-template-columns: 1fr;
    }

    .footer-container {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .video-grid {
        grid-template-columns: 1fr;
    }

    .expert-grid {
        grid-template-columns: 1fr;
    }

    .dashboard-title {
        font-size: 1.5rem;
    }

    .faq-question {
        padding: 1rem;
    }

    .footer-container {
        gap: 1rem;
    }
}

/* 动画 */
@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.fade-in {
    animation: fadeIn 0.5s ease-in;
}

.slide-in-up {
    animation: slideInUp 0.5s ease-out;
}

/* 视频播放弹窗 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: white;
    border-radius: 1rem;
    max-width: 900px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    animation: slideInUp 0.3s ease;
}

.modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-light);
    transition: var(--transition);
}

.modal-close:hover {
    color: var(--text-dark);
    transform: scale(1.2);
}

.modal-body {
    padding: 1.5rem;
}

.video-player {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #000;
    border-radius: 0.5rem;
    margin-bottom: 1.5rem;
    position: relative;
}

.video-player video {
    width: 100%;
    height: 100%;
    border-radius: 0.5rem;
}

.player-controls {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

.player-btn {
    padding: 0.75rem 1.5rem;
    border: 1px solid var(--border-color);
    background: white;
    color: var(--text-dark);
    border-radius: 0.4rem;
    cursor: pointer;
    font-weight: 600;
    transition: var(--transition);
}

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

.player-btn.primary {
    background-color: var(--secondary-color);
    color: white;
    border-color: var(--secondary-color);
}

.player-btn.primary:hover {
    background-color: #e67e00;
}