/* 足球赛事网站 - 现代化响应式CSS样式 */

/* ===== AI分析模态框样式 ===== */
.ai-modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(5px);
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
}

.ai-modal-content {
    background: white;
    border-radius: var(--border-radius-xl);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.ai-modal-header {
    background: var(--gradient-primary);
    color: white;
    padding: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.ai-modal-header h4 {
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.ai-modal-close {
    background: none;
    border: none;
    color: white;
    font-size: var(--font-size-2xl);
    cursor: pointer;
    padding: var(--spacing-xs);
    border-radius: var(--border-radius-sm);
    transition: var(--transition-fast);
    line-height: 1;
}

.ai-modal-close:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.ai-modal-body {
    padding: var(--spacing-lg);
    max-height: calc(90vh - 80px);
    overflow-y: auto;
}

.ai-loading {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--gray-600);
}

.ai-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--gray-200);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-lg);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.ai-analysis-content {
    line-height: 1.8;
    color: var(--gray-700);
}

.ai-analysis-content h2 {
    color: var(--primary-color);
    margin: var(--spacing-xl) 0 var(--spacing-lg);
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

.ai-analysis-content h3 {
    color: var(--primary-dark);
    margin: var(--spacing-lg) 0 var(--spacing-md);
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.ai-analysis-content h4 {
    color: var(--gray-800);
    margin: var(--spacing-md) 0 var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.ai-analysis-content p {
    margin-bottom: var(--spacing-md);
}

.ai-analysis-content strong {
    color: var(--primary-dark);
    font-weight: 600;
}

.ai-analysis-content em {
    color: var(--gray-600);
    font-style: italic;
}

.ai-analysis-content .alert {
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    margin: var(--spacing-md) 0;
}

.ai-analysis-content .alert-danger {
    background-color: #F8D7DA;
    border: 1px solid #F5C6CB;
    color: #721C24;
}

/* 数据来源指示器样式 */
.data-source-indicator {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-align: center;
    border: 1px solid;
    animation: fadeInDown 0.5s ease-out;
}

.data-source-indicator.real-ai {
    background-color: #D4EDDA;
    border-color: #C3E6CB;
    color: #155724;
}

.data-source-indicator.mock-data {
    background-color: #FFF3CD;
    border-color: #FFEAA7;
    color: #856404;
}

.data-source-indicator.cached-data {
    background-color: #D1ECF1;
    border-color: #BEE5EB;
    color: #0C5460;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* AI分析按钮样式 */
.ai-analysis-btn {
    margin-top: var(--spacing-sm);
}

.ai-analysis-btn .btn {
    background: linear-gradient(135deg, #0074D9 0%, #0056B3 100%);
    color: white;
    border: none;
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) var(--spacing-md);
    min-height: auto;
}

.ai-analysis-btn .btn:hover {
    background: linear-gradient(135deg, #0056B3 0%, #004085 100%);
    transform: translateY(-1px);
}

/* ===== 基础重置和变量 ===== */
:root {
    /* 主色调 - 足球绿色主题 */
    --primary-color: #2ECC40;
    --primary-dark: #1E7B1E;
    --primary-light: #4FE64F;
    
    /* 辅助色 */
    --secondary-color: #FF6B35;
    --accent-color: #0074D9;
    --warning-color: #FF851B;
    --danger-color: #FF4136;
    --success-color: #2ECC40;
    --info-color: #0074D9;
    
    /* 中性色 */
    --gray-50: #F8F9FA;
    --gray-100: #E9ECEF;
    --gray-200: #DEE2E6;
    --gray-300: #CED4DA;
    --gray-400: #ADB5BD;
    --gray-500: #6C757D;
    --gray-600: #495057;
    --gray-700: #343A40;
    --gray-800: #212529;
    --gray-900: #0D1117;
    
    /* 渐变色 */
    --gradient-primary: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    --gradient-secondary: linear-gradient(135deg, var(--secondary-color) 0%, #E74C3C 100%);
    --gradient-dark: linear-gradient(135deg, var(--gray-800) 0%, var(--gray-900) 100%);
    
    /* 阴影 */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 25px rgba(0,0,0,0.15);
    --shadow-xl: 0 20px 40px rgba(0,0,0,0.2);
    
    /* 字体 */
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    
    /* 间距 */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* 边框 */
    --border-radius-sm: 0.25rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;
    --border-radius-xl: 1rem;
    
    /* 过渡 */
    --transition-fast: 0.15s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
    --transition-slow: 0.5s ease-in-out;
}

/* ===== 基础重置 ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--gray-700);
    background-color: var(--gray-50);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== 通用类 ===== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--spacing-md);
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 calc(-1 * var(--spacing-sm));
}

.col { flex: 1 1 0%; }
.col-1 { flex: 0 0 8.333333%; }
.col-2 { flex: 0 0 16.666667%; }
.col-3 { flex: 0 0 25%; }
.col-4 { flex: 0 0 33.333333%; }
.col-5 { flex: 0 0 41.666667%; }
.col-6 { flex: 0 0 50%; }
.col-7 { flex: 0 0 58.333333%; }
.col-8 { flex: 0 0 66.666667%; }
.col-9 { flex: 0 0 75%; }
.col-10 { flex: 0 0 83.333333%; }
.col-11 { flex: 0 0 91.666667%; }
.col-12 { flex: 0 0 100%; }

[class*="col-"] {
    padding: 0 var(--spacing-sm);
}

/* ===== 卡片组件 ===== */
.card {
    background: white;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    margin-bottom: var(--spacing-xl);
    overflow: hidden;
    border: 1px solid rgba(0,0,0,0.05);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.card:hover {
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
    transform: translateY(-2px);
}

.card-header {
    background: linear-gradient(135deg, var(--gray-50), var(--gray-100));
    padding: 24px 30px;
    border-bottom: 1px solid rgba(0,0,0,0.08);
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--gray-800);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.card-header::before {
    content: "";
    width: 4px;
    height: 24px;
    background: linear-gradient(135deg, var(--primary-color), #2ecc71);
    border-radius: 2px;
}

.card-body {
    padding: 30px;
}

.card-footer {
    background: linear-gradient(135deg, var(--gray-50), var(--gray-100));
    padding: 20px 30px;
    border-top: 1px solid rgba(0,0,0,0.08);
    text-align: center;
}

/* 卡片响应式设计 */
@media (max-width: 768px) {
    .card {
        border-radius: 16px;
        margin-bottom: var(--spacing-lg);
    }
    
    .card-header {
        padding: 20px;
        font-size: 1.1rem;
    }
    
    .card-body {
        padding: 20px;
    }
    
    .card-footer {
        padding: 16px 20px;
    }
}

/* ===== 按钮组件 ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border: none;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 0.95rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.2);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), #2ecc71);
    color: white;
    box-shadow: 0 4px 15px rgba(46, 204, 113, 0.3);
}

.btn-primary:hover {
    background: linear-gradient(135deg, #27ae60, var(--primary-color));
    box-shadow: 0 8px 30px rgba(46, 204, 113, 0.4);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary-color), #95a5a6);
    color: white;
    box-shadow: 0 4px 15px rgba(149, 165, 166, 0.3);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #7f8c8d, var(--secondary-color));
    box-shadow: 0 8px 30px rgba(149, 165, 166, 0.4);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
    box-shadow: 0 4px 15px rgba(46, 204, 113, 0.1);
}

.btn-outline:hover {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 8px 25px rgba(46, 204, 113, 0.3);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.85rem;
    border-radius: 25px;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1.1rem;
    border-radius: 60px;
}

/* 按钮响应式设计 */
@media (max-width: 768px) {
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .btn-sm {
        padding: 6px 12px;
        font-size: 0.8rem;
    }
    
    .btn-lg {
        padding: 14px 28px;
        font-size: 1rem;
    }
}

/* ===== 导航栏 ===== */
.header {
    background: var(--gradient-dark);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
}

.logo {
    font-size: var(--font-size-2xl);
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo::before {
    content: "⚽";
    font-size: var(--font-size-3xl);
}

.nav {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-fast);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
}

.nav a:hover {
    color: var(--primary-color);
    background: rgba(255, 255, 255, 0.1);
}

.mobile-menu-btn {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: var(--font-size-xl);
    cursor: pointer;
}

/* ===== 导航栏样式 ===== */
.navbar {
    background: var(--gradient-dark);
    box-shadow: var(--shadow-md);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
}

.nav-logo a {
    font-size: var(--font-size-2xl);
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav-logo a::before {
    content: "⚽";
    font-size: var(--font-size-3xl);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    margin: 0;
    padding: 0;
}

.nav-menu a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: all var(--transition-fast);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--primary-color);
    background: rgba(255, 255, 255, 0.1);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--gradient-dark);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu li {
        margin: var(--spacing-xs) 0;
    }
}

/* ===== 英雄区域 ===== */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, #2ecc71 50%, #27ae60 100%);
    color: white;
    padding: 120px 0 80px;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-section::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"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-section::after {
    content: "";
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 100px;
    background: linear-gradient(to bottom, transparent, white);
}

.hero-section .container {
    position: relative;
    z-index: 2;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    text-shadow: 2px 2px 8px rgba(0,0,0,0.3);
    letter-spacing: -1px;
    animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
    font-size: 1.4rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
    font-weight: 300;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-lg);
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease-out 0.4s both;
}

.hero-buttons .btn {
    padding: 16px 32px;
    font-size: 1.1rem;
    font-weight: 600;
    border-radius: 50px;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.hero-buttons .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.3);
}

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

/* 响应式设计 */
@media (max-width: 768px) {
    .hero-section {
        padding: 80px 0 60px;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-buttons .btn {
        width: 200px;
    }
}

/* ===== 赛事卡片 ===== */
.match-card {
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    padding: 24px;
    margin-bottom: var(--spacing-md);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(0,0,0,0.05);
    display: flex;
    flex-direction: column;
    height: 100%;
    min-height: 320px;
    position: relative;
    overflow: hidden;
}

.match-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), #2ecc71);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

.match-card:hover {
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
    transform: translateY(-4px);
}

.match-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid rgba(0,0,0,0.08);
}

.match-teams {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    flex: 1;
}

.team {
    text-align: center;
    flex: 1;
    transition: transform 0.2s ease;
}

.team:hover {
    transform: scale(1.05);
}

.team-name {
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: var(--spacing-xs);
    line-height: 1.3;
    min-height: 20px;
    color: var(--gray-800);
}

.team-logo {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--gray-100), var(--gray-200));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.team-logo:hover {
    box-shadow: 0 6px 20px rgba(0,0,0,0.15);
    background: linear-gradient(135deg, var(--primary-color), #2ecc71);
}

.match-score {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    font-size: 2rem;
    font-weight: 800;
}

.score {
    background: linear-gradient(135deg, var(--gray-800), var(--gray-700));
    color: white;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: 12px;
    min-width: 80px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    letter-spacing: 2px;
}

.match-time {
    text-align: center;
    color: var(--gray-600);
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.match-odds {
    margin-top: auto;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(0,0,0,0.08);
    min-height: 24px;
    text-align: center;
    background: rgba(0,0,0,0.02);
    border-radius: 8px;
    padding: var(--spacing-sm);
}

.match-odds small {
    color: var(--gray-600);
    font-weight: 500;
}

.match-live-btn {
    margin-top: var(--spacing-md);
    text-align: center;
}

.match-live-btn .btn {
    min-width: 140px;
    font-size: 0.85rem;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 25px;
    font-weight: 600;
}

.btn-disabled {
    opacity: 0.6;
    cursor: not-allowed !important;
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-xs);
    min-height: 32px;
}

.match-status {
    display: inline-block;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-live {
    background: linear-gradient(135deg, var(--danger-color), #e74c3c);
    color: white;
    animation: pulse 2s infinite;
    box-shadow: 0 2px 8px rgba(231, 76, 60, 0.3);
}

.status-upcoming {
    background: linear-gradient(135deg, var(--info-color), #3498db);
    color: white;
    box-shadow: 0 2px 8px rgba(52, 152, 219, 0.3);
}

.status-finished {
    background: linear-gradient(135deg, var(--success-color), #27ae60);
    color: white;
    box-shadow: 0 2px 8px rgba(39, 174, 96, 0.3);
}

@keyframes pulse {
    0% { 
        opacity: 1; 
        transform: scale(1);
    }
    50% { 
        opacity: 0.8; 
        transform: scale(1.05);
    }
    100% { 
        opacity: 1; 
        transform: scale(1);
    }
}

/* 比赛卡片响应式设计 */
@media (max-width: 768px) {
    .match-card {
        padding: 20px;
        min-height: 280px;
    }
    
    .match-teams {
        gap: var(--spacing-md);
    }
    
    .team-logo {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
    
    .match-score {
        font-size: 1.5rem;
    }
    
    .score {
        min-width: 60px;
        padding: var(--spacing-sm) var(--spacing-md);
    }
}

/* ===== 统计区域 ===== */
.stats-section {
    padding: 100px 0;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    position: relative;
}

.stats-section::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), #2ecc71, var(--primary-color));
    background-size: 200% 100%;
    animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

.stats-section h2 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--gray-800);
    margin-bottom: 3rem;
    position: relative;
}

.stats-section h2::after {
    content: "";
    position: absolute;
    bottom: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), #2ecc71);
    border-radius: 2px;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.stat-card {
    text-align: center;
    padding: 40px 30px;
    background: white;
    border-radius: 20px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    border: 1px solid rgba(0,0,0,0.05);
}

.stat-card::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), #2ecc71);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

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

.stat-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.15);
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary-color), #2ecc71);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
    animation: countUp 1s ease-out;
}

.stat-label {
    font-size: 1.1rem;
    color: var(--gray-600);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

@keyframes countUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 统计区域响应式设计 */
@media (max-width: 768px) {
    .stats-section {
        padding: 60px 0;
    }
    
    .stats-section h2 {
        font-size: 2rem;
        margin-bottom: 2rem;
    }
    
    .stats-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
        gap: var(--spacing-lg);
    }
    
    .stat-card {
        padding: 30px 20px;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
}

/* ===== 表格样式 ===== */
.table {
    width: 100%;
    background: white;
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    border: 1px solid rgba(0,0,0,0.05);
}

.table th,
.table td {
    padding: 16px 20px;
    text-align: left;
    border-bottom: 1px solid rgba(0,0,0,0.08);
}

.table th {
    background: linear-gradient(135deg, var(--gray-50), var(--gray-100));
    font-weight: 700;
    color: var(--gray-700);
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--primary-color);
}

.table td {
    font-weight: 500;
    color: var(--gray-600);
    transition: background-color 0.2s ease;
}

.table tbody tr {
    transition: all 0.2s ease;
}

.table tbody tr:hover {
    background-color: rgba(46, 204, 113, 0.05);
    transform: scale(1.01);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

.table .text-center {
    text-align: center;
}

.table .font-weight-bold {
    font-weight: 700;
    color: var(--gray-800);
}

.badge {
    display: inline-block;
    padding: 6px 12px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-radius: 20px;
}

.badge-success {
    background: linear-gradient(135deg, var(--success-color), #27ae60);
    color: white;
}

.badge-danger {
    background: linear-gradient(135deg, var(--danger-color), #e74c3c);
    color: white;
}

.badge-info {
    background: linear-gradient(135deg, var(--info-color), #3498db);
    color: white;
}

/* 表格响应式设计 */
@media (max-width: 768px) {
    .table {
        font-size: 0.9rem;
    }
    
    .table th,
    .table td {
        padding: 12px 16px;
    }
    
    .table th {
        font-size: 0.8rem;
    }
}

/* ===== 表单样式 ===== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: 500;
    color: var(--gray-700);
}

.form-control {
    width: 100%;
    padding: var(--spacing-md);
    border: 2px solid var(--gray-300);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(46, 204, 64, 0.1);
}

/* ===== 警告框 ===== */
.alert {
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-lg);
    border-left: 4px solid;
}

.alert-success {
    background: rgba(46, 204, 64, 0.1);
    border-color: var(--success-color);
    color: var(--success-color);
}

.alert-warning {
    background: rgba(255, 133, 27, 0.1);
    border-color: var(--warning-color);
    color: var(--warning-color);
}

.alert-danger {
    background: rgba(255, 65, 54, 0.1);
    border-color: var(--danger-color);
    color: var(--danger-color);
}

.alert-info {
    background: rgba(0, 116, 217, 0.1);
    border-color: var(--info-color);
    color: var(--info-color);
}

/* ===== 工具类 ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--secondary-color); }
.text-success { color: var(--success-color); }
.text-danger { color: var(--danger-color); }
.text-warning { color: var(--warning-color); }
.text-info { color: var(--info-color); }

.bg-primary { background: var(--primary-color); }
.bg-secondary { background: var(--secondary-color); }
.bg-light { background: var(--gray-50); }
.bg-dark { background: var(--gray-800); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }
.p-5 { padding: var(--spacing-xl); }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.align-center { align-items: center; }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

.rounded { border-radius: var(--border-radius-md); }
.rounded-lg { border-radius: var(--border-radius-lg); }
.rounded-xl { border-radius: var(--border-radius-xl); }

.shadow { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== 响应式设计 ===== */
@media (max-width: 1200px) {
    .container {
        max-width: 960px;
    }
}

@media (max-width: 992px) {
    .container {
        max-width: 720px;
    }
    
    .hero-title {
        font-size: var(--font-size-3xl);
    }
    
    .match-teams {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .match-score {
        order: -1;
    }
}

@media (max-width: 768px) {
    .container {
        max-width: 540px;
    }
    
    .mobile-menu-btn {
        display: block;
    }
    
    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--gray-800);
        flex-direction: column;
        padding: var(--spacing-md);
        box-shadow: var(--shadow-lg);
    }
    
    .nav.active {
        display: flex;
    }
    
    .header .container {
        flex-wrap: wrap;
    }
    
    .logo {
        order: 1;
    }
    
    .mobile-menu-btn {
        order: 2;
    }
    
    .nav {
        order: 3;
        width: 100%;
    }
    
    .col-md-1 { flex: 0 0 8.333333%; }
    .col-md-2 { flex: 0 0 16.666667%; }
    .col-md-3 { flex: 0 0 25%; }
    .col-md-4 { flex: 0 0 33.333333%; }
    .col-md-5 { flex: 0 0 41.666667%; }
    .col-md-6 { flex: 0 0 50%; }
    .col-md-7 { flex: 0 0 58.333333%; }
    .col-md-8 { flex: 0 0 66.666667%; }
    .col-md-9 { flex: 0 0 75%; }
    .col-md-10 { flex: 0 0 83.333333%; }
    .col-md-11 { flex: 0 0 91.666667%; }
    .col-md-12 { flex: 0 0 100%; }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .container {
        max-width: 100%;
        padding: 0 var(--spacing-sm);
    }
    
    .hero-title {
        font-size: var(--font-size-2xl);
    }
    
    .hero-subtitle {
        font-size: var(--font-size-lg);
    }
    
    .match-card {
        padding: var(--spacing-md);
    }
    
    .match-score {
        font-size: var(--font-size-2xl);
        gap: var(--spacing-md);
    }
    
    .team-logo {
        width: 40px;
        height: 40px;
        font-size: var(--font-size-lg);
    }
    
    .team-name {
        font-size: var(--font-size-base);
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .col-sm-1 { flex: 0 0 8.333333%; }
    .col-sm-2 { flex: 0 0 16.666667%; }
    .col-sm-3 { flex: 0 0 25%; }
    .col-sm-4 { flex: 0 0 33.333333%; }
    .col-sm-5 { flex: 0 0 41.666667%; }
    .col-sm-6 { flex: 0 0 50%; }
    .col-sm-7 { flex: 0 0 58.333333%; }
    .col-sm-8 { flex: 0 0 66.666667%; }
    .col-sm-9 { flex: 0 0 75%; }
    .col-sm-10 { flex: 0 0 83.333333%; }
    .col-sm-11 { flex: 0 0 91.666667%; }
    .col-sm-12 { flex: 0 0 100%; }
}

/* ===== 打印样式 ===== */
@media print {
    .header,
    .mobile-menu-btn,
    .btn,
    .match-status {
        display: none !important;
    }
    
    .match-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid var(--gray-300);
    }
    
    body {
        background: white;
        color: black;
    }
}

/* ===== 辅助功能 ===== */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* ===== AI分析样式 ===== */
.btn-ai {
    background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
    color: white;
    font-size: var(--font-size-sm);
    padding: var(--spacing-xs) var(--spacing-md);
    margin-left: var(--spacing-xs);
    border-radius: var(--border-radius-sm);
    position: relative;
    overflow: hidden;
}

.btn-ai::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s;
}

.btn-ai:hover::before {
    left: 100%;
}

.btn-ai:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.ai-modal {
    max-width: 800px;
    max-height: 90vh;
    overflow-y: auto;
}

.ai-analysis {
    padding: var(--spacing-lg);
}

.ai-analysis .match-info {
    background: var(--gray-50);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-lg);
    border-left: 4px solid var(--info-color);
}

.ai-analysis .match-info p {
    margin: var(--spacing-xs) 0;
}

.analysis-content {
    background: white;
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-200);
}

.analysis-content h3 {
    color: var(--info-color);
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-xl);
    text-align: center;
    position: relative;
    padding-bottom: var(--spacing-md);
}

.analysis-content h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius-sm);
}

.analysis-section {
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--gray-50);
    border-radius: var(--border-radius-md);
    border-left: 3px solid var(--primary-color);
}

.analysis-section h4 {
    color: var(--primary-dark);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-lg);
    font-weight: 600;
}

.analysis-section p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.8;
    color: var(--gray-700);
}

.analysis-section p:last-child {
    margin-bottom: 0;
}

.ai-actions {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--gray-200);
}

.btn-refresh {
    background: linear-gradient(135deg, var(--warning-color) 0%, #ff6b35 100%);
    color: white;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-weight: 500;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.btn-refresh:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
    background: linear-gradient(135deg, #ff6b35 0%, var(--warning-color) 100%);
}

/* AI分析加载动画 */
.ai-analysis .loading {
    text-align: center;
    padding: var(--spacing-2xl);
    font-size: var(--font-size-lg);
    color: var(--info-color);
    position: relative;
}

.ai-analysis .loading::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40px;
    height: 40px;
    border: 3px solid var(--gray-200);
    border-top: 3px solid var(--info-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-top: -30px;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* AI分析错误样式 */
.ai-analysis .error {
    background: linear-gradient(135deg, #fee 0%, #fdd 100%);
    color: var(--danger-color);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    text-align: center;
    border: 1px solid #fcc;
    font-weight: 500;
}

/* 响应式AI分析样式 */
@media (max-width: 768px) {
    .ai-modal {
        max-width: 95vw;
        margin: var(--spacing-md);
    }
    
    .ai-analysis {
        padding: var(--spacing-md);
    }
    
    .analysis-content {
        padding: var(--spacing-md);
    }
    
    .analysis-content h3 {
        font-size: var(--font-size-lg);
    }
    
    .analysis-section {
        padding: var(--spacing-sm);
    }
    
    .btn-ai {
        font-size: var(--font-size-xs);
        padding: 2px var(--spacing-xs);
    }
}

/* ===== 全局动画效果 ===== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* 滚动显示动画 */
.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* 悬停阴影效果 */
.hover-shadow {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.hover-shadow:hover {
    box-shadow: 0 12px 40px rgba(0,0,0,0.15);
    transform: translateY(-4px);
}

/* 加载动画 */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: "";
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* 页面加载动画 */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.5s ease;
}

.page-loader.hidden {
    opacity: 0;
    pointer-events: none;
}

.loader {
    width: 50px;
    height: 50px;
    border: 4px solid var(--gray-200);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* 平滑滚动 */
html {
    scroll-behavior: smooth;
}

/* 选择文本样式 */
::selection {
    background: var(--primary-color);
    color: white;
}

::-moz-selection {
    background: var(--primary-color);
    color: white;
}

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-color), #2ecc71);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #27ae60, var(--primary-color));
}

/* 焦点样式 */
:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* 响应式图片 */
img {
    max-width: 100%;
    height: auto;
}

/* 通用间距类 */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.ml-0 { margin-left: 0; }
.ml-1 { margin-left: var(--spacing-xs); }
.ml-2 { margin-left: var(--spacing-sm); }
.ml-3 { margin-left: var(--spacing-md); }
.ml-4 { margin-left: var(--spacing-lg); }
.ml-5 { margin-left: var(--spacing-xl); }

.mr-0 { margin-right: 0; }
.mr-1 { margin-right: var(--spacing-xs); }
.mr-2 { margin-right: var(--spacing-sm); }
.mr-3 { margin-right: var(--spacing-md); }
.mr-4 { margin-right: var(--spacing-lg); }
.mr-5 { margin-right: var(--spacing-xl); }

.pt-0 { padding-top: 0; }
.pt-1 { padding-top: var(--spacing-xs); }
.pt-2 { padding-top: var(--spacing-sm); }
.pt-3 { padding-top: var(--spacing-md); }
.pt-4 { padding-top: var(--spacing-lg); }
.pt-5 { padding-top: var(--spacing-xl); }

.pb-0 { padding-bottom: 0; }
.pb-1 { padding-bottom: var(--spacing-xs); }
.pb-2 { padding-bottom: var(--spacing-sm); }
.pb-3 { padding-bottom: var(--spacing-md); }
.pb-4 { padding-bottom: var(--spacing-lg); }
.pb-5 { padding-bottom: var(--spacing-xl); }

.pl-0 { padding-left: 0; }
.pl-1 { padding-left: var(--spacing-xs); }
.pl-2 { padding-left: var(--spacing-sm); }
.pl-3 { padding-left: var(--spacing-md); }
.pl-4 { padding-left: var(--spacing-lg); }
.pl-5 { padding-left: var(--spacing-xl); }

.pr-0 { padding-right: 0; }
.pr-1 { padding-right: var(--spacing-xs); }
.pr-2 { padding-right: var(--spacing-sm); }
.pr-3 { padding-right: var(--spacing-md); }
.pr-4 { padding-right: var(--spacing-lg); }
.pr-5 { padding-right: var(--spacing-xl); }

/* 文本对齐 */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-justify { text-align: justify; }

/* 文本颜色 */
.text-primary { color: var(--primary-color); }
.text-secondary { color: var(--secondary-color); }
.text-success { color: var(--success-color); }
.text-danger { color: var(--danger-color); }
.text-warning { color: var(--warning-color); }
.text-info { color: var(--info-color); }
.text-muted { color: var(--gray-600); }
.text-dark { color: var(--gray-800); }
.text-light { color: var(--gray-400); }
.text-white { color: white; }

/* 字体粗细 */
.font-weight-light { font-weight: 300; }
.font-weight-normal { font-weight: 400; }
.font-weight-medium { font-weight: 500; }
.font-weight-semibold { font-weight: 600; }
.font-weight-bold { font-weight: 700; }
.font-weight-extrabold { font-weight: 800; }

/* 显示工具 */
.d-none { display: none; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-inline-flex { display: inline-flex; }

/* Flex工具 */
.flex-row { flex-direction: row; }
.flex-column { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }
.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }
.align-start { align-items: flex-start; }
.align-center { align-items: center; }
.align-end { align-items: flex-end; }
.align-stretch { align-items: stretch; }

/* ===== 页脚样式 ===== */
.footer {
    background: linear-gradient(135deg, var(--gray-800), var(--gray-900));
    color: var(--gray-300);
    padding: var(--spacing-xl) 0;
    margin-top: auto;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, var(--primary-color), transparent);
    animation: shimmer 3s infinite;
}

.footer .container {
    text-align: center;
}

.footer p {
    margin: 0;
    font-size: 14px;
    opacity: 0.8;
}

/* ===== 响应式设计优化 ===== */
@media (max-width: 1200px) {
    .container {
        max-width: 960px;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .matches-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .container {
        max-width: 100%;
        padding: 0 var(--spacing-md);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.1rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .matches-grid {
        grid-template-columns: 1fr;
    }
    
    .teams-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .table-container {
        overflow-x: auto;
    }
    
    .table {
        font-size: 14px;
    }
    
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: white;
        box-shadow: 0 4px 20px rgba(0,0,0,0.1);
        flex-direction: column;
        padding: var(--spacing-md);
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-menu ul {
        flex-direction: column;
        width: 100%;
    }
    
    .nav-menu li {
        margin: var(--spacing-sm) 0;
    }
    
    .nav-link {
        display: block;
        padding: var(--spacing-sm) var(--spacing-md);
        border-radius: var(--border-radius-md);
    }
    
    .mobile-menu-toggle {
        display: block;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .teams-grid {
        grid-template-columns: 1fr;
    }
    
    .card {
        margin: var(--spacing-sm);
    }
    
    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 14px;
    }
    
    .match-card {
        padding: var(--spacing-md);
    }
    
    .team-name {
        font-size: 14px;
    }
    
    .match-score {
        font-size: 1.2rem;
    }
}

/* ===== 打印样式 ===== */
@media print {
    .header,
    .hero-section,
    .footer,
    .scroll-top,
    .btn,
    .page-loader {
        display: none !important;
    }
    
    .main-content {
        margin: 0;
        padding: 0;
    }
    
    .card {
        border: 1px solid #ddd;
        box-shadow: none;
        page-break-inside: avoid;
    }
    
    .table {
        font-size: 12px;
    }
    
    body {
        font-size: 12px;
        line-height: 1.4;
    }
}

/* ===== 高对比度模式支持 ===== */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #006600;
        --secondary-color: #004400;
        --text-color: #000000;
        --background-color: #ffffff;
        --card-background: #ffffff;
        --border-color: #000000;
    }
    
    .btn {
        border: 2px solid var(--primary-color);
    }
    
    .card {
        border: 2px solid var(--border-color);
    }
}

/* ===== 减少动画模式支持 ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    
    .fade-in,
    .scroll-reveal {
        opacity: 1;
        transform: none;
    }
}

/* ===== 无障碍访问优化 ===== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-color);
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 1000;
}

.skip-link:focus {
    top: 6px;
}

/* 确保所有交互元素都有足够的点击区域 */
.btn,
.nav-link,
.match-card,
.stat-card {
    min-height: 44px;
    min-width: 44px;
}

/* 焦点指示器增强 */
.btn:focus,
.nav-link:focus,
input:focus,
textarea:focus,
select:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* ===== 深色模式支持 ===== */
@media (prefers-color-scheme: dark) {
    :root {
        --gray-50: #1a1a1a;
        --gray-100: #2d2d2d;
        --gray-200: #404040;
        --gray-300: #525252;
        --gray-700: #e5e5e5;
        --gray-800: #f5f5f5;
        --gray-900: #ffffff;
    }
    
    body {
        background-color: var(--gray-50);
        color: var(--gray-700);
    }
    
    .card {
        background: var(--gray-100);
        border-color: var(--gray-300);
    }
    
    .table th {
        background: var(--gray-200);
    }
    
    .form-control {
        background: var(--gray-100);
        border-color: var(--gray-300);
        color: var(--gray-700);
    }
}