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

body {
    font-family: 'Open Sans', sans-serif;
    line-height: 1.6;
    color: #333;
    background: #fff;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: 'Bebas Neue', cursive;
    font-weight: 700;
    line-height: 1.2;
}

a {
    color: inherit;
    text-decoration: none;
    transition: all 0.3s ease;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    background: rgba(0, 0, 0, 0.95);
    color: #fff;
    padding: 15px 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.navbar.scrolled {
    background: rgba(0, 0, 0, 0.98);
    padding: 10px 0;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-img {
    height: 40px;
    width: auto;
    border-radius: 5px;
}

.navbar nav {
    display: flex;
    gap: 30px;
}

.navbar nav a {
    font-weight: 600;
    position: relative;
    padding: 5px 0;
}

.navbar nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: #ff4444;
    transition: width 0.3s ease;
}

.navbar nav a:hover::after {
    width: 100%;
}

.mobile-menu-btn {
    display: none;
    font-size: 24px;
    cursor: pointer;
}

/* 主横幅 */
.hero {
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.4)), url('../images/hero.jpg') center/cover no-repeat;
    color: #fff;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    margin-top: 0;
}

.hero-overlay {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 800px;
    padding: 0 20px;
}

.hero-text {
    margin-bottom: 50px;
}

.hero-title {
    font-size: 4rem;
    margin-bottom: 20px;
    animation: fadeInUp 1s ease;
}

.title-line {
    display: block;
    background: linear-gradient(45deg, #fff, #ff4444);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
    animation: fadeInUp 1s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    justify-content: center;
    animation: fadeInUp 1s ease 0.4s both;
}

.btn {
    padding: 15px 30px;
    border-radius: 50px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    cursor: pointer;
    border: none;
    font-size: 14px;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(45deg, #ff4444, #ff6666);
    color: #fff;
    box-shadow: 0 4px 15px rgba(255, 68, 68, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 68, 68, 0.4);
}

.btn-secondary {
    background: transparent;
    color: #fff;
    border: 2px solid #fff;
}

.btn-secondary:hover {
    background: #fff;
    color: #333;
    transform: translateY(-2px);
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-top: 50px;
    animation: fadeInUp 1s ease 0.6s both;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: #ff4444;
    display: block;
}

.stat-label {
    font-size: 0.9rem;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
    color: #fff;
    font-size: 24px;
    cursor: pointer;
}

/* 区块样式 */
.section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 3rem;
    margin-bottom: 15px;
    color: #333;
}

.section-subtitle {
    font-size: 1.1rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* 关于我们 */
.about-section {
    background: #f8f9fa;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text h3 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: #333;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 30px;
    color: #666;
}

.features {
    display: flex;
    gap: 30px;
    flex-wrap: wrap;
}

.feature {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    color: #333;
}

.feature i {
    color: #ff4444;
    font-size: 20px;
}

.about-image {
    display: flex;
    justify-content: center;
}

.about-logo {
    width: 300px;
    height: 300px;
    object-fit: contain;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

/* 教练团队 */
.coaches-section {
    background: #fff;
}

.coaches-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.coach-card {
    background: #fff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.coach-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.coach-card.hovered {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.coach-image {
    position: relative;
    overflow: hidden;
    height: 400px;
    flex-shrink: 0;
}

.coach-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center top;
    transition: transform 0.3s ease;
}

.coach-card:hover .coach-image img {
    transform: scale(1.1);
}

.coach-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 68, 68, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
    color: #fff;
    font-size: 24px;
}

.coach-card:hover .coach-overlay {
    opacity: 1;
}

.coach-info {
    padding: 25px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.coach-info h3 {
    font-size: 1.5rem;
    margin-bottom: 5px;
    color: #333;
}

.coach-title {
    color: #ff4444;
    font-weight: 600;
    margin-bottom: 15px;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.coach-description {
    color: #666;
    line-height: 1.6;
    margin-bottom: 20px;
    font-size: 0.95rem;
    flex-grow: 1;
}

.coach-achievements {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: auto;
}

.achievement {
    background: #f0f0f0;
    color: #666;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* 课程介绍 */
.courses-section {
    background: linear-gradient(135deg, #f8f9fa, #e9ecef);
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    max-width: 1200px;
    margin: 0 auto;
}

.course-card {
    background: #fff;
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.course-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(45deg, #ff4444, #ff6666);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.course-card:hover::before {
    transform: scaleX(1);
}

.course-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

.course-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(45deg, #ff4444, #ff6666);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    color: #fff;
    font-size: 32px;
    flex-shrink: 0;
}

.course-card h3 {
    font-size: 1.5rem;
    margin-bottom: 15px;
    color: #333;
}

.course-card p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 25px;
    flex-grow: 1;
}

.course-features {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: auto;
}

.feature-tag {
    background: #f0f0f0;
    color: #666;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

/* 联系我们 */
.contact-section {
    background: #fff;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: stretch;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
}

.contact-item:hover {
    background: #fff;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transform: translateX(10px);
}

.copy-hint {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.8rem;
    color: #ff4444;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.contact-item:hover .copy-hint {
    opacity: 1;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(45deg, #ff4444, #ff6666);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
}

.contact-details h4 {
    font-size: 1.1rem;
    margin-bottom: 5px;
    color: #333;
}

.contact-details p {
    color: #666;
    font-size: 0.95rem;
}

.contact-form {
    background: #f8f9fa;
    padding: 40px;
    border-radius: 15px;
    height: fit-content;
}

.contact-form h3 {
    font-size: 1.8rem;
    margin-bottom: 30px;
    text-align: center;
    color: #333;
}

.form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    position: relative;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px 20px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #fff;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #ff4444;
    box-shadow: 0 0 0 3px rgba(255, 68, 68, 0.1);
}

/* 美化的课程选择器 */
.course-select-wrapper {
    position: relative;
    width: 100%;
}

.course-select {
    width: 100%;
    padding: 15px 20px;
    padding-right: 50px;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #fff;
    appearance: none;
    cursor: pointer;
}

.course-select:focus {
    outline: none;
    border-color: #ff4444;
    box-shadow: 0 0 0 3px rgba(255, 68, 68, 0.1);
}

.select-arrow {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #666;
    pointer-events: none;
    transition: transform 0.3s ease;
}

.course-select:focus + .select-arrow {
    transform: translateY(-50%) rotate(180deg);
    color: #ff4444;
}

.course-select option {
    padding: 10px;
    font-size: 1rem;
    color: #333;
}

.course-select option:first-child {
    color: #999;
    font-style: italic;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

/* 页脚 */
.footer {
    background: #1a1a1a;
    color: #fff;
    padding: 60px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 20px;
    color: #fff;
}

.footer-section p {
    color: #ccc;
    line-height: 1.6;
    margin-bottom: 15px;
}

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

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

.footer-section ul li a {
    color: #ccc;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #ff4444;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: #333;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.social-links a:hover {
    background: #ff4444;
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 20px;
    text-align: center;
    color: #ccc;
}

/* 复制成功提示 */
.copy-notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #ff4444;
    color: #fff;
    padding: 15px 25px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(255, 68, 68, 0.3);
    z-index: 10000;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    font-weight: 600;
}

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

/* 通知提示样式 */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 25px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.2);
    z-index: 10000;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    font-weight: 600;
    max-width: 300px;
}

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

.notification-success {
    background: #28a745;
    color: #fff;
}

.notification-error {
    background: #dc3545;
    color: #fff;
}

.notification-info {
    background: #17a2b8;
    color: #fff;
}

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

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar nav {
        display: none;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .mobile-tabs {
        display: block !important;
    }
    
    /* 为移动端tab导航留出底部空间 */
    body {
        padding-bottom: 80px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .coaches-grid {
        grid-template-columns: 1fr;
    }
    
    .courses-grid {
        grid-template-columns: 1fr;
        max-width: none;
        gap: 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .container {
        padding: 0 15px;
    }
}

/* 移动端Tab导航样式 */
.mobile-tabs {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-top: 1px solid rgba(0, 0, 0, 0.1);
    z-index: 1000;
    padding: 10px 0;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    width: 100%;
}

.mobile-tabs .container {
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.mobile-tabs .tab-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    padding: 8px 12px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    color: #666;
    font-size: 12px;
    font-weight: 500;
    min-width: 60px;
}

.mobile-tabs .tab-item i {
    font-size: 18px;
    transition: all 0.3s ease;
}

.mobile-tabs .tab-item.active {
    color: #e74c3c;
    background: rgba(231, 76, 60, 0.1);
    transform: translateY(-2px);
}

.mobile-tabs .tab-item.active i {
    transform: scale(1.1);
}

.mobile-tabs .tab-item:hover {
    color: #e74c3c;
    transform: translateY(-1px);
}

/* 调试样式 - 确保移动端tab导航显示 */
@media (max-width: 1024px) {
    .mobile-tabs {
        display: block !important;
    }
}

@media (max-width: 480px) {
    .mobile-tabs {
        display: block !important;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .btn {
        padding: 12px 24px;
        font-size: 12px;
    }
    
    .section {
        padding: 60px 0;
    }
    
    .contact-form {
        padding: 30px 20px;
    }
}