/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

/* 头部样式 */
header {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

h1 {
    font-size: 1.8rem;
    color: #2c3e50;
    font-weight: 600;
}

/* 搜索栏样式 */
.search-container {
    position: relative;
    width: 400px;
    margin-left: 2rem;
}

.search-input {
    width: 100%;
    padding: 12px 45px 12px 20px;
    border: 2px solid #e0e0e0;
    border-radius: 25px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #f8f9fa;
    color: #2c3e50;
}

.search-input:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
    background: #fff;
}

.search-icon {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #95a5a6;
    pointer-events: none;
    transition: color 0.3s ease;
}

.search-input:focus + .search-icon {
    color: #3498db;
}

.search-icon svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
}

/* 主要内容区域 */
main {
    margin-top: 80px;
    padding: 2rem 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.sports-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    padding: 1rem;
}

.sport-category {
    background: #fff;
    border-radius: 8px;
    padding: 1.5rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.sport-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.sport-category h2 {
    color: #2c3e50;
    font-size: 1.4rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #3498db;
}

.sport-category ul {
    list-style: none;
}

.sport-category li {
    margin-bottom: 0.8rem;
}

.sport-category a {
    text-decoration: none;
    color: #666;
    display: block;
    padding: 0.5rem 0;
    transition: color 0.3s ease;
}

.sport-category a:hover {
    color: #3498db;
    padding-left: 5px;
}

/* 页脚样式 */
footer {
    background-color: #2c3e50;
    color: #fff;
    padding: 2rem 0;
    margin-top: 3rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
    padding: 0 1rem;
}

.contact {
    margin-top: 1rem;
    font-size: 0.9rem;
}

.contact a {
    color: #3498db;
    text-decoration: none;
    transition: color 0.3s ease;
}

.contact a:hover {
    color: #2980b9;
}

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

    .search-container {
        width: 100%;
        margin: 1rem 0 0 0;
    }

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

    h1 {
        font-size: 1.5rem;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.sport-category {
    animation: fadeIn 0.5s ease-out forwards;
}