/* 
 * 龙运体育 - 主样式文件
 * 专业体育服务公司官网
 */

/* CSS Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #c41e3a;
    --secondary-color: #e63946;
    --accent-color: #ffd700;
    --dark-color: #1a1a2e;
    --light-color: #f8f9fa;
    --text-color: #333333;
    --text-light: #666666;
    --border-color: #e0e0e0;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    font-size: 16px;
    line-height: 1.8;
    color: var(--text-color);
    background-color: #ffffff;
}

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

ul, ol {
    list-style: none;
}

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

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

/* Header Styles */
.header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-text {
    font-size: 28px;
    font-weight: bold;
    color: #ffffff;
    letter-spacing: 2px;
}

.logo-icon {
    width: 45px;
    height: 45px;
    background: var(--accent-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.nav-menu {
    display: flex;
    gap: 35px;
}

.nav-menu a {
    color: #ffffff;
    font-size: 16px;
    font-weight: 500;
    padding: 8px 0;
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-color);
    transition: var(--transition);
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--accent-color);
}

/* Mobile Menu */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 25px;
    height: 3px;
    background: #ffffff;
    border-radius: 2px;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 50%, var(--dark-color) 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><circle cx="50" cy="50" r="40" fill="none" stroke="rgba(255,255,255,0.05)" stroke-width="2"/></svg>') repeat;
    background-size: 200px;
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero h1 {
    font-size: 52px;
    color: #ffffff;
    margin-bottom: 20px;
    line-height: 1.2;
}

.hero h1 span {
    color: var(--accent-color);
}

.hero-desc {
    font-size: 18px;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 30px;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.btn {
    display: inline-block;
    padding: 14px 35px;
    border-radius: 30px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: var(--accent-color);
    color: #ffffff;
}

.btn-primary:hover {
    background: #e09000;
    transform: translateY(-3px);
    box-shadow: 0 10px 30px rgba(245, 166, 35, 0.3);
}

.btn-outline {
    background: transparent;
    color: #ffffff;
    border: 2px solid #ffffff;
}

.btn-outline:hover {
    background: #ffffff;
    color: var(--primary-color);
}

/* Section Styles */
.section {
    padding: 80px 0;
}

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

.section-header h2 {
    font-size: 36px;
    color: var(--dark-color);
    margin-bottom: 15px;
    position: relative;
    display: inline-block;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--primary-color);
}

.section-header p {
    font-size: 16px;
    color: var(--text-light);
    max-width: 600px;
    margin: 20px auto 0;
}

.section-header .en-title {
    font-size: 14px;
    color: var(--primary-color);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 10px;
}

/* About Section */
.about-section {
    background: var(--light-color);
}

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

.about-text h3 {
    font-size: 28px;
    color: var(--dark-color);
    margin-bottom: 20px;
}

.about-text p {
    color: var(--text-light);
    margin-bottom: 15px;
    text-align: justify;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-top: 30px;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: 15px;
}

.feature-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 24px;
}

.feature-item span {
    font-weight: 600;
    color: var(--dark-color);
}

.about-image {
    position: relative;
}

.about-image-main {
    width: 100%;
    height: 400px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 100px;
}

.about-stats {
    position: absolute;
    bottom: -30px;
    left: -30px;
    background: #ffffff;
    padding: 25px 35px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    display: flex;
    gap: 40px;
}

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

.stat-item .number {
    font-size: 36px;
    font-weight: bold;
    color: var(--primary-color);
}

.stat-item .label {
    font-size: 14px;
    color: var(--text-light);
}

/* Services Section */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.service-card {
    background: #ffffff;
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    margin: 0 auto 25px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 36px;
    color: #ffffff;
}

.service-card h3 {
    font-size: 22px;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.service-card p {
    color: var(--text-light);
    font-size: 15px;
    line-height: 1.8;
}

.service-card .learn-more {
    display: inline-block;
    margin-top: 20px;
    color: var(--primary-color);
    font-weight: 600;
}

.service-card .learn-more:hover {
    color: var(--accent-color);
}

/* News Section */
.news-section {
    background: var(--light-color);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-card {
    background: #ffffff;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

.news-image {
    height: 200px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 48px;
}

.news-content {
    padding: 25px;
}

.news-date {
    font-size: 14px;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.news-card h3 {
    font-size: 18px;
    color: var(--dark-color);
    margin-bottom: 12px;
    line-height: 1.5;
}

.news-card p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 15px;
}

.news-card .read-more {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 14px;
}

.news-card .read-more:hover {
    color: var(--accent-color);
}

/* FAQ Section */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: #ffffff;
    border-radius: 10px;
    margin-bottom: 15px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    overflow: hidden;
}

.faq-question {
    padding: 20px 25px;
    font-weight: 600;
    color: var(--dark-color);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

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

.faq-question::after {
    content: '+';
    font-size: 24px;
    color: var(--primary-color);
}

.faq-item.active .faq-question::after {
    content: '-';
}

.faq-answer {
    padding: 0 25px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 25px 20px;
    max-height: 500px;
}

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

/* Contact Section */
.contact-section {
    background: linear-gradient(135deg, var(--dark-color), #2a2a4a);
    color: #ffffff;
}

.contact-section .section-header h2 {
    color: #ffffff;
}

.contact-section .section-header p {
    color: rgba(255, 255, 255, 0.7);
}

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

.contact-info h3 {
    font-size: 24px;
    margin-bottom: 30px;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    margin-bottom: 25px;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.contact-item h4 {
    font-size: 16px;
    margin-bottom: 5px;
}

.contact-item p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 15px;
}

.contact-form {
    background: rgba(255, 255, 255, 0.1);
    padding: 40px;
    border-radius: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 15px 20px;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-color);
}

.form-group textarea {
    height: 120px;
    resize: none;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: 2px solid var(--primary-color);
}

/* Footer */
.footer {
    background: #0d0d1a;
    color: #ffffff;
    padding: 60px 0 30px;
}

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

.footer-about h3 {
    font-size: 24px;
    margin-bottom: 20px;
}

.footer-about p {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
    line-height: 1.8;
}

.footer-links h4 {
    font-size: 18px;
    margin-bottom: 20px;
}

.footer-links ul li {
    margin-bottom: 12px;
}

.footer-links a {
    color: rgba(255, 255, 255, 0.6);
    font-size: 14px;
}

.footer-links a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.5);
    font-size: 14px;
}

.footer-social {
    display: flex;
    gap: 15px;
}

.footer-social a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    transition: var(--transition);
}

.footer-social a:hover {
    background: var(--primary-color);
}

/* Page Header */
.page-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 150px 0 80px;
    text-align: center;
    color: #ffffff;
}

.page-header h1 {
    font-size: 42px;
    margin-bottom: 15px;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    gap: 10px;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.8);
}

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

/* News Detail Page */
.news-detail {
    padding: 60px 0;
}

.news-detail-content {
    max-width: 800px;
    margin: 0 auto;
}

.news-detail-header {
    margin-bottom: 40px;
}

.news-detail-header h1 {
    font-size: 32px;
    color: var(--dark-color);
    margin-bottom: 20px;
    line-height: 1.4;
}

.news-meta {
    display: flex;
    gap: 30px;
    color: var(--text-light);
    font-size: 14px;
}

.news-detail-body {
    line-height: 2;
    color: var(--text-color);
}

.news-detail-body p {
    margin-bottom: 20px;
    text-align: justify;
}

.news-detail-body h2 {
    font-size: 24px;
    color: var(--dark-color);
    margin: 30px 0 20px;
}

.news-detail-body h3 {
    font-size: 20px;
    color: var(--dark-color);
    margin: 25px 0 15px;
}

.news-nav {
    display: flex;
    justify-content: space-between;
    margin-top: 50px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.news-nav a {
    color: var(--primary-color);
    font-weight: 600;
}

.news-nav a:hover {
    color: var(--accent-color);
}

/* About Page */
.about-detail {
    padding: 60px 0;
}

.about-intro {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
}

.about-intro-text h2 {
    font-size: 32px;
    color: var(--dark-color);
    margin-bottom: 25px;
}

.about-intro-text p {
    color: var(--text-light);
    margin-bottom: 15px;
    text-align: justify;
}

.values-section {
    background: var(--light-color);
    padding: 80px 0;
    margin: 0 -20px;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.value-card {
    background: #ffffff;
    padding: 40px 25px;
    border-radius: 15px;
    text-align: center;
    box-shadow: var(--shadow);
}

.value-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 30px;
    color: #ffffff;
}

.value-card h3 {
    font-size: 20px;
    color: var(--dark-color);
    margin-bottom: 10px;
}

.value-card p {
    font-size: 14px;
    color: var(--text-light);
}

/* Services Page */
.services-detail {
    padding: 60px 0;
}

.service-detail-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    margin-bottom: 80px;
    padding-bottom: 80px;
    border-bottom: 1px solid var(--border-color);
}

.service-detail-card:nth-child(even) {
    direction: rtl;
}

.service-detail-card:nth-child(even) > * {
    direction: ltr;
}

.service-detail-card:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.service-detail-image {
    height: 350px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 80px;
}

.service-detail-content h2 {
    font-size: 28px;
    color: var(--dark-color);
    margin-bottom: 20px;
}

.service-detail-content p {
    color: var(--text-light);
    margin-bottom: 15px;
    text-align: justify;
}

.service-features {
    margin-top: 25px;
}

.service-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    color: var(--text-color);
}

.service-features li::before {
    content: '✓';
    color: var(--primary-color);
    font-weight: bold;
}

/* Contact Page */
.contact-detail {
    padding: 60px 0;
}

.contact-detail-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
}

.contact-sidebar {
    background: var(--light-color);
    padding: 40px;
    border-radius: 20px;
}

.contact-sidebar h3 {
    font-size: 24px;
    color: var(--dark-color);
    margin-bottom: 30px;
}

.contact-sidebar-item {
    margin-bottom: 25px;
}

.contact-sidebar-item h4 {
    font-size: 16px;
    color: var(--dark-color);
    margin-bottom: 8px;
}

.contact-sidebar-item p {
    color: var(--text-light);
    font-size: 15px;
}

.contact-main-form {
    background: #ffffff;
    padding: 40px;
    border-radius: 20px;
    box-shadow: var(--shadow);
}

.contact-main-form h3 {
    font-size: 24px;
    color: var(--dark-color);
    margin-bottom: 30px;
}

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

.contact-main-form input,
.contact-main-form textarea {
    width: 100%;
    padding: 15px 20px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    font-size: 16px;
    margin-bottom: 20px;
    transition: var(--transition);
}

.contact-main-form input:focus,
.contact-main-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.contact-main-form textarea {
    height: 150px;
    resize: none;
}

/* News List Page */
.news-list-section {
    padding: 60px 0;
}

.news-list-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .about-content,
    .contact-grid,
    .about-intro,
    .service-detail-card {
        grid-template-columns: 1fr;
    }
    
    .services-grid,
    .news-grid,
    .news-list-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .values-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .contact-detail-grid {
        grid-template-columns: 1fr;
    }
    
    .service-detail-card:nth-child(even) {
        direction: ltr;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--primary-color);
        flex-direction: column;
        padding: 20px;
        gap: 15px;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .hero h1 {
        font-size: 36px;
    }
    
    .hero-desc {
        font-size: 16px;
    }
    
    .services-grid,
    .news-grid,
    .news-list-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .values-grid {
        grid-template-columns: 1fr;
    }
    
    .about-stats {
        position: static;
        margin-top: 20px;
        justify-content: center;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}

/* Utilities */
.text-center {
    text-align: center;
}

.mt-20 {
    margin-top: 20px;
}

.mb-20 {
    margin-bottom: 20px;
}

.bg-light {
    background: var(--light-color);
}

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

.animate-fadeInUp {
    animation: fadeInUp 0.6s ease forwards;
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: #ffffff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--secondary-color);
    transform: translateY(-5px);
}