/* 
 * 体育直播网站 - 主样式表
 * 独特的深蓝渐变配色方案 + 橙色强调色
 * 移动端优先响应式设计
 */

/* CSS Variables - 独特配色方案 */
:root {
    --primary-dark: #0a1628;
    --primary-medium: #1a2744;
    --primary-light: #2d4263;
    --accent-orange: #ff6b35;
    --accent-gold: #ffd700;
    --accent-cyan: #00d4ff;
    --text-white: #ffffff;
    --text-light: #e0e6ed;
    --text-muted: #8899a6;
    --success-green: #28a745;
    --warning-red: #dc3545;
    --card-bg: rgba(26, 39, 68, 0.95);
    --shadow-color: rgba(0, 0, 0, 0.3);
    --border-radius: 12px;
    --transition-speed: 0.3s;
}

/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-medium) 50%, var(--primary-light) 100%);
    background-attachment: fixed;
    color: var(--text-light);
    line-height: 1.8;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.4;
    color: var(--text-white);
    margin-bottom: 1rem;
}

h1 { font-size: clamp(1.75rem, 5vw, 2.5rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.5rem); }
h4 { font-size: clamp(1.1rem, 2.5vw, 1.25rem); }

p {
    margin-bottom: 1rem;
    color: var(--text-light);
}

a {
    color: var(--accent-cyan);
    text-decoration: none;
    transition: color var(--transition-speed);
}

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

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

/* Container */
.container {
    width: 100%;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 768px) {
    .container {
        padding: 0 2rem;
    }
}

/* Header - 非sticky导航 */
.site-header {
    background: linear-gradient(180deg, var(--primary-dark) 0%, rgba(10, 22, 40, 0.95) 100%);
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

@media (min-width: 768px) {
    .header-inner {
        flex-direction: row;
        justify-content: space-between;
    }
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo-img {
    height: 50px;
    width: auto;
}

/* Navigation */
.main-nav {
    width: 100%;
}

.nav-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.5rem;
    list-style: none;
}

@media (min-width: 768px) {
    .nav-list {
        gap: 1.5rem;
    }
}

.nav-item a {
    display: inline-block;
    padding: 0.5rem 1rem;
    color: var(--text-light);
    font-weight: 500;
    border-radius: 8px;
    transition: all var(--transition-speed);
    font-size: 0.9rem;
}

.nav-item a:hover,
.nav-item a.active {
    background: var(--accent-orange);
    color: var(--text-white);
}

/* Breadcrumb */
.breadcrumb {
    padding: 1rem 0;
    font-size: 0.875rem;
}

.breadcrumb-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    list-style: none;
    align-items: center;
}

.breadcrumb-item::after {
    content: '>';
    margin-left: 0.5rem;
    color: var(--text-muted);
}

.breadcrumb-item:last-child::after {
    display: none;
}

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

.breadcrumb-item.current {
    color: var(--accent-orange);
}

/* Hero Section */
.hero-section {
    position: relative;
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 3rem 1rem;
    background: linear-gradient(135deg, rgba(10, 22, 40, 0.9), rgba(45, 66, 99, 0.8)), url('../images/hero-stadium-nz8tv49p.webp') center/cover no-repeat;
}

.hero-content {
    max-width: 800px;
    z-index: 2;
}

.hero-title {
    font-size: clamp(2rem, 6vw, 3.5rem);
    margin-bottom: 1.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

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

.hero-desc {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    margin-bottom: 2rem;
    color: var(--text-light);
}

/* CTA Button */
.cta-btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: linear-gradient(135deg, var(--accent-orange), #ff8c5a);
    color: var(--text-white);
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 1px;
    box-shadow: 0 4px 20px rgba(255, 107, 53, 0.4);
    transition: all var(--transition-speed);
}

.cta-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(255, 107, 53, 0.6);
    color: var(--text-white);
}

/* Section Styles */
.section {
    padding: 3rem 0;
}

@media (min-width: 768px) {
    .section {
        padding: 4rem 0;
    }
}

.section-title {
    text-align: center;
    margin-bottom: 2rem;
    position: relative;
    padding-bottom: 1rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-orange), var(--accent-gold));
    border-radius: 2px;
}

/* Card Grid */
.card-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 576px) {
    .card-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .card-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Sport Card */
.sport-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: 0 10px 40px var(--shadow-color);
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.sport-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 60px var(--shadow-color);
}

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

.sport-card-body {
    padding: 1.5rem;
}

.sport-card-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--accent-gold);
}

.sport-card-text {
    font-size: 0.95rem;
    color: var(--text-light);
    margin-bottom: 1rem;
}

.sport-card-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--accent-orange);
    font-weight: 600;
}

.sport-card-link:hover {
    color: var(--accent-cyan);
}

/* About Section */
.about-section {
    background: linear-gradient(180deg, rgba(26, 39, 68, 0.5), rgba(10, 22, 40, 0.8));
}

.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: center;
}

@media (min-width: 768px) {
    .about-content {
        grid-template-columns: 1fr 1fr;
    }
}

.about-img {
    border-radius: var(--border-radius);
    box-shadow: 0 10px 40px var(--shadow-color);
}

.about-text h3 {
    color: var(--accent-gold);
    margin-bottom: 1rem;
}

/* Author Info - E-E-A-T */
.author-box {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    border-left: 4px solid var(--accent-orange);
    margin: 2rem 0;
}

@media (min-width: 576px) {
    .author-box {
        flex-direction: row;
        align-items: center;
    }
}

.author-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--accent-gold);
    flex-shrink: 0;
}

.author-info h4 {
    color: var(--accent-gold);
    margin-bottom: 0.25rem;
}

.author-info p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin-bottom: 0;
}

/* Payment Section */
.payment-section {
    background: var(--card-bg);
    padding: 2rem;
    border-radius: var(--border-radius);
    margin: 2rem 0;
}

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

@media (min-width: 576px) {
    .payment-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.payment-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 8px;
    transition: background var(--transition-speed);
}

.payment-item:hover {
    background: rgba(255, 255, 255, 0.1);
}

.payment-item img {
    height: 40px;
    width: auto;
}

.payment-item span {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* License Section */
.license-section {
    text-align: center;
    padding: 2rem;
    background: linear-gradient(135deg, rgba(13, 71, 161, 0.3), rgba(26, 39, 68, 0.8));
    border-radius: var(--border-radius);
    border: 2px solid var(--accent-gold);
    margin: 2rem 0;
}

.license-badge {
    width: 150px;
    height: 150px;
    margin: 0 auto 1rem;
    border-radius: 50%;
}

.license-info h4 {
    color: var(--accent-gold);
}

.license-number {
    font-family: monospace;
    font-size: 1.1rem;
    color: var(--accent-cyan);
    margin: 0.5rem 0;
}

/* Support Section */
.support-section {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin: 2rem 0;
}

.support-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

@media (min-width: 576px) {
    .support-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .support-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.support-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0.75rem;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: 8px;
}

.support-icon {
    width: 60px;
    height: 60px;
}

.support-item h4 {
    color: var(--accent-gold);
    font-size: 1rem;
}

.support-item p {
    font-size: 0.9rem;
    color: var(--text-muted);
    margin: 0;
}

/* FAQ Section */
.faq-section {
    margin: 2rem 0;
}

.faq-item {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 1.5rem;
    cursor: pointer;
    background: rgba(255, 255, 255, 0.02);
    transition: background var(--transition-speed);
}

.faq-question:hover {
    background: rgba(255, 255, 255, 0.05);
}

.faq-question h4 {
    margin: 0;
    font-size: 1rem;
    color: var(--text-white);
}

.faq-icon {
    font-size: 1.5rem;
    color: var(--accent-orange);
    transition: transform var(--transition-speed);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-item.active .faq-answer {
    padding: 1.5rem;
    max-height: 500px;
}

.faq-answer p {
    margin: 0;
    color: var(--text-light);
}

/* Reviews Section */
.reviews-section {
    margin: 2rem 0;
}

.review-card {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border-left: 4px solid var(--accent-gold);
}

.review-header {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

@media (min-width: 576px) {
    .review-header {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }
}

.reviewer-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.reviewer-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-orange), var(--accent-gold));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-white);
}

.reviewer-name {
    font-weight: 600;
    color: var(--text-white);
}

.reviewer-location {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.review-rating {
    display: flex;
    gap: 2px;
}

.star {
    color: var(--accent-gold);
    font-size: 1.1rem;
}

.star.empty {
    color: var(--text-muted);
}

.review-content {
    color: var(--text-light);
    font-style: italic;
    margin-bottom: 0.75rem;
}

.review-date {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Disclaimer Section */
.disclaimer-section {
    background: rgba(220, 53, 69, 0.1);
    border: 1px solid var(--warning-red);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin: 2rem 0;
}

.disclaimer-section h4 {
    color: var(--warning-red);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.disclaimer-section p {
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

.disclaimer-section ul {
    list-style: none;
    padding-left: 1rem;
}

.disclaimer-section li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.disclaimer-section li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--warning-red);
}

/* Footer */
.site-footer {
    background: linear-gradient(180deg, var(--primary-medium), var(--primary-dark));
    padding: 3rem 0 1rem;
    margin-top: 3rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

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

@media (min-width: 576px) {
    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 992px) {
    .footer-grid {
        grid-template-columns: repeat(4, 1fr);
    }
}

.footer-col h4 {
    color: var(--accent-gold);
    font-size: 1rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--accent-orange);
}

.footer-links {
    list-style: none;
}

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

.footer-links a {
    color: var(--text-muted);
    font-size: 0.9rem;
    transition: color var(--transition-speed);
}

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

.footer-social {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--text-light);
    transition: all var(--transition-speed);
}

.social-link:hover {
    background: var(--accent-orange);
    color: var(--text-white);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-payment {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.footer-payment img {
    height: 30px;
    width: auto;
    opacity: 0.8;
    transition: opacity var(--transition-speed);
}

.footer-payment img:hover {
    opacity: 1;
}

.footer-age {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.footer-age img {
    width: 40px;
    height: 40px;
}

.footer-copyright {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* Inner Page Styles */
.page-header {
    background: linear-gradient(135deg, rgba(10, 22, 40, 0.95), rgba(45, 66, 99, 0.9));
    padding: 3rem 0;
    text-align: center;
}

.page-title {
    font-size: clamp(1.75rem, 5vw, 2.5rem);
    margin-bottom: 1rem;
}

.page-desc {
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

.page-content {
    padding: 2rem 0;
}

.content-box {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 2rem;
    margin-bottom: 2rem;
}

.content-box h3 {
    color: var(--accent-gold);
    margin-bottom: 1rem;
}

.content-img {
    border-radius: var(--border-radius);
    margin: 1.5rem 0;
    box-shadow: 0 10px 40px var(--shadow-color);
}

/* App Download Page */
.app-hero {
    background: linear-gradient(135deg, rgba(10, 22, 40, 0.95), rgba(255, 107, 53, 0.2));
    padding: 4rem 0;
    text-align: center;
}

.app-features {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
    margin: 2rem 0;
}

@media (min-width: 576px) {
    .app-features {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 768px) {
    .app-features {
        grid-template-columns: repeat(3, 1fr);
    }
}

.feature-item {
    background: var(--card-bg);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    text-align: center;
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.download-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin: 2rem 0;
}

.download-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: var(--card-bg);
    border: 2px solid var(--accent-orange);
    border-radius: 12px;
    color: var(--text-white);
    font-weight: 600;
    transition: all var(--transition-speed);
}

.download-btn:hover {
    background: var(--accent-orange);
    color: var(--text-white);
}

.download-btn img {
    height: 30px;
    width: auto;
}

/* Data Table */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    background: var(--card-bg);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.data-table th,
.data-table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.data-table th {
    background: rgba(255, 107, 53, 0.2);
    color: var(--accent-gold);
    font-weight: 600;
}

.data-table tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* Live Badge */
.live-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.25rem 0.75rem;
    background: var(--warning-red);
    color: var(--text-white);
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 20px;
    text-transform: uppercase;
}

.live-badge::before {
    content: '';
    width: 8px;
    height: 8px;
    background: var(--text-white);
    border-radius: 50%;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-gold { color: var(--accent-gold); }
.text-orange { color: var(--accent-orange); }
.text-cyan { color: var(--accent-cyan); }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }

/* Preload & Performance */
.lazy-load {
    opacity: 0;
    transition: opacity 0.5s;
}

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

/* Print Styles */
@media print {
    .site-header,
    .site-footer,
    .cta-btn {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
}