/* SportTalent - 运动员数据档案与职业发展平台 */
/* 全局重置与基础样式 */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-dark: #263238;
    --primary-blue: #2196F3;
    --white: #FFFFFF;
    --light-gray: #F5F7FA;
    --text-dark: #1A1A2E;
    --text-gray: #546E7A;
    --border-color: #E0E6ED;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 8px 30px rgba(33, 150, 243, 0.15);
    --radius: 8px;
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
    color: var(--text-dark);
    background-color: var(--white);
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

a:hover {
    color: #1976D2;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.site-header {
    background: var(--primary-dark);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.nav-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    max-width: 1200px;
    margin: 0 auto;
    height: 70px;
}

.site-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--white);
    font-size: 1.3rem;
    font-weight: 700;
    letter-spacing: 1px;
}

.site-logo .logo-icon {
    width: 36px;
    height: 36px;
    background: var(--primary-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
}

.main-nav {
    display: flex;
    list-style: none;
    gap: 5px;
}

.main-nav li a {
    color: rgba(255, 255, 255, 0.85);
    padding: 8px 14px;
    border-radius: var(--radius);
    font-size: 0.9rem;
    transition: var(--transition);
}

.main-nav li a:hover,
.main-nav li a.active {
    color: var(--white);
    background: rgba(33, 150, 243, 0.2);
}

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.mobile-toggle span {
    width: 25px;
    height: 3px;
    background: var(--white);
    border-radius: 2px;
    transition: var(--transition);
}

/* Hero区域 */
.hero-section {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #37474F 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('../images/hero-banner.webp') center/cover no-repeat;
    opacity: 0.15;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    color: var(--white);
}

.hero-content h1 {
    font-size: 2.8rem;
    margin-bottom: 20px;
    font-weight: 800;
    line-height: 1.3;
}

.hero-content h1 .highlight {
    color: var(--primary-blue);
}

.hero-content p {
    font-size: 1.15rem;
    opacity: 0.9;
    max-width: 700px;
    margin: 0 auto 30px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 50px;
    margin-top: 40px;
}

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

.hero-stats .stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-blue);
    display: block;
}

.hero-stats .stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-top: 5px;
}

/* 通用区块 */
.section {
    padding: 70px 0;
}

.section-alt {
    background: var(--light-gray);
}

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

.section-title h2 {
    font-size: 2rem;
    color: var(--primary-dark);
    margin-bottom: 12px;
    font-weight: 700;
}

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

/* 卡片网格 */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 25px;
}

.card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.card-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.card-body {
    padding: 22px;
}

.card-body h3 {
    font-size: 1.15rem;
    margin-bottom: 10px;
    color: var(--primary-dark);
}

.card-body p {
    color: var(--text-gray);
    font-size: 0.92rem;
    line-height: 1.6;
}

.card-tag {
    display: inline-block;
    background: rgba(33, 150, 243, 0.1);
    color: var(--primary-blue);
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    margin-top: 12px;
}

/* 球员卡片 */
.player-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 25px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

.player-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
}

.player-avatar {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    object-fit: cover;
    margin: 0 auto 15px;
    border: 3px solid var(--primary-blue);
}

.player-card h3 {
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.player-card .position {
    color: var(--text-gray);
    font-size: 0.85rem;
    margin-bottom: 12px;
}

.player-stats {
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.player-stats .stat {
    background: var(--light-gray);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    color: var(--primary-dark);
}

/* 数据看板 */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.dashboard-item {
    background: var(--white);
    border-radius: var(--radius);
    padding: 25px;
    text-align: center;
    box-shadow: var(--shadow);
    border-top: 3px solid var(--primary-blue);
}

.dashboard-item .number {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--primary-blue);
}

.dashboard-item .label {
    color: var(--text-gray);
    font-size: 0.9rem;
    margin-top: 5px;
}

/* 雷达图区域 */
.radar-section {
    background: var(--primary-dark);
    padding: 60px 0;
    color: var(--white);
}

.radar-container {
    display: flex;
    align-items: center;
    gap: 50px;
}

.radar-chart-wrapper {
    flex: 1;
    display: flex;
    justify-content: center;
}

.radar-info {
    flex: 1;
}

.radar-info h2 {
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.radar-info p {
    opacity: 0.85;
    line-height: 1.8;
    margin-bottom: 20px;
}

/* 视频区域 */
.video-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* 合作机构Logo墙 */
.partner-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 30px;
    align-items: center;
}

.partner-item {
    background: var(--white);
    padding: 25px;
    border-radius: var(--radius);
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.partner-item:hover {
    box-shadow: var(--shadow-hover);
}

.partner-item img {
    max-height: 60px;
    margin: 0 auto;
    opacity: 0.7;
    transition: var(--transition);
}

.partner-item:hover img {
    opacity: 1;
}

.partner-item .partner-name {
    margin-top: 10px;
    font-size: 0.85rem;
    color: var(--text-gray);
}

/* 表格样式 */
.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.data-table thead {
    background: var(--primary-dark);
    color: var(--white);
}

.data-table th,
.data-table td {
    padding: 14px 18px;
    text-align: left;
    font-size: 0.9rem;
}

.data-table tbody tr {
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition);
}

.data-table tbody tr:hover {
    background: rgba(33, 150, 243, 0.05);
}

/* 筛选器 */
.filter-bar {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.filter-bar select,
.filter-bar input {
    padding: 10px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 0.9rem;
    background: var(--white);
    color: var(--text-dark);
    outline: none;
    transition: var(--transition);
}

.filter-bar select:focus,
.filter-bar input:focus {
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

/* 按钮 */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: var(--radius);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-align: center;
}

.btn-primary {
    background: var(--primary-blue);
    color: var(--white);
}

.btn-primary:hover {
    background: #1976D2;
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(33, 150, 243, 0.3);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-blue);
    color: var(--primary-blue);
}

.btn-outline:hover {
    background: var(--primary-blue);
    color: var(--white);
}

/* 页脚 */
.site-footer {
    background: var(--primary-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: 50px 0 20px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-col h4 {
    color: var(--white);
    font-size: 1rem;
    margin-bottom: 15px;
    font-weight: 600;
}

.footer-col p,
.footer-col li {
    font-size: 0.88rem;
    line-height: 2;
    opacity: 0.8;
}

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

.footer-col ul li a {
    color: rgba(255, 255, 255, 0.8);
}

.footer-col ul li a:hover {
    color: var(--primary-blue);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    text-align: center;
    font-size: 0.82rem;
    opacity: 0.7;
}

/* 面包屑 */
.breadcrumb {
    padding: 15px 0;
    font-size: 0.85rem;
    color: var(--text-gray);
}

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

.breadcrumb a:hover {
    color: var(--primary-blue);
}

.breadcrumb span {
    margin: 0 8px;
}

/* 内页Banner */
.page-banner {
    background: linear-gradient(135deg, var(--primary-dark) 0%, #37474F 100%);
    padding: 50px 0;
    text-align: center;
    color: var(--white);
}

.page-banner h1 {
    font-size: 2.2rem;
    margin-bottom: 10px;
}

.page-banner p {
    opacity: 0.85;
    font-size: 1rem;
}

/* 时间线 */
.timeline {
    position: relative;
    padding: 20px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 2px;
    height: 100%;
    background: var(--border-color);
}

.timeline-item {
    display: flex;
    margin-bottom: 40px;
    position: relative;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 14px;
    height: 14px;
    background: var(--primary-blue);
    border-radius: 50%;
    border: 3px solid var(--white);
    box-shadow: 0 0 0 3px var(--primary-blue);
}

/* 案例展示 */
.case-card {
    display: flex;
    gap: 30px;
    background: var(--white);
    border-radius: var(--radius);
    padding: 30px;
    box-shadow: var(--shadow);
    margin-bottom: 25px;
    transition: var(--transition);
}

.case-card:hover {
    box-shadow: var(--shadow-hover);
}

.case-card img {
    width: 200px;
    height: 150px;
    object-fit: cover;
    border-radius: var(--radius);
    flex-shrink: 0;
}

.case-card .case-content h3 {
    font-size: 1.15rem;
    margin-bottom: 10px;
    color: var(--primary-dark);
}

.case-card .case-content p {
    color: var(--text-gray);
    font-size: 0.92rem;
    line-height: 1.7;
}

/* 懒加载 */
.lazy-load {
    opacity: 0;
    transition: opacity 0.5s ease;
}

.lazy-load.loaded {
    opacity: 1;
}

/* 响应式 */
@media (max-width: 1024px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .dashboard-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .radar-container {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
    }
    
    .main-nav {
        display: none;
        position: absolute;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--primary-dark);
        flex-direction: column;
        padding: 20px;
        gap: 5px;
        box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
    }
    
    .main-nav.active {
        display: flex;
    }
    
    .hero-content h1 {
        font-size: 1.8rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .card-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .case-card {
        flex-direction: column;
    }
    
    .case-card img {
        width: 100%;
    }
    
    .filter-bar {
        flex-direction: column;
    }
    
    .page-banner h1 {
        font-size: 1.6rem;
    }
    
    .section {
        padding: 40px 0;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 1.5rem;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .partner-grid {
        grid-template-columns: 1fr 1fr;
    }
}