/* ===== MODERN CASINO WEBSITE CSS FRAMEWORK ===== */
/* 基于分析的1文件夹优化策略，创建全新现代化设计 */

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

:root {
    /* 颜色系统 - 红金经典配色方案 */
    --primary-bg: #141416;
    --accent-gold: #f0c159;
    --primary-red: #8b0000;
    --wine-red: #722f37;
    --champagne-gold: #f7e7ce;
    --text-white: #ffffff;
    --text-gray: #cccccc;
    --card-bg: #1a1a1c;
    --border-color: #333335;
    --success-green: #00ff88;
    --danger-red: #ff4757;
    
    /* 字体系统 */
    --font-primary: 'Roboto', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-secondary: 'Roboto Slab', serif;
    
    /* 间距系统 */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* 阴影系统 */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.4);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.5);
    --shadow-xl: 0 16px 32px rgba(0,0,0,0.6);
    
    /* 边框圆角 */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;
    
    /* 过渡动画 */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* === 基础元素 === */
html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--primary-bg);
    color: var(--text-white);
    line-height: 1.6;
    overflow-x: hidden;
}

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

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

/* === 网格系统 === */
.row {
    display: flex;
    flex-wrap: wrap;
    margin: 0 -var(--spacing-sm);
}

.col {
    flex: 1;
    padding: 0 var(--spacing-sm);
}

.col-12 { flex: 0 0 100%; }
.col-6 { flex: 0 0 50%; }
.col-4 { flex: 0 0 33.333%; }
.col-3 { flex: 0 0 25%; }

@media (max-width: 768px) {
    .col-md-12 { flex: 0 0 100%; }
    .col-sm-12 { flex: 0 0 100%; }
}

/* === HERO区域样式 === */
.hero-section {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--primary-bg) 0%, var(--wine-red) 100%);
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 50%, rgba(139, 0, 0, 0.3) 0%, transparent 70%);
    pointer-events: none;
}

.hero-section::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 70% 30%, rgba(240, 193, 89, 0.15) 0%, transparent 60%);
    pointer-events: none;
}

.hero-content {
    text-align: center;
    z-index: 2;
    position: relative;
}

.hero-image-container {
    position: relative;
    margin-bottom: var(--spacing-xl);
}

.hero-main-image {
    max-width: 400px;
    width: 100%;
    height: auto;
    filter: drop-shadow(0 20px 40px rgba(240, 193, 89, 0.3));
    animation: heroImageFloat 3s ease-in-out infinite;
}

@keyframes heroImageFloat {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-10px); }
}

.hero-title {
    font-family: var(--font-secondary);
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--text-white) 0%, var(--accent-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 3vw, 1.4rem);
    color: var(--text-gray);
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* === 导航样式 === */
.navbar {
    background: var(--primary-bg);
    padding: var(--spacing-xs) 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    border-bottom: 1px solid var(--border-color);
}


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

.navbar-brand {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-white);
    font-weight: 700;
    font-size: 1.1rem;
}

.navbar-logo {
    height: 28px;
    width: auto;
    margin-right: var(--spacing-xs);
}

.navbar-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xs);
}

.navbar-menu a {
    color: var(--text-white);
    text-decoration: none;
    font-weight: 400;
    font-size: 0.85rem;
    padding: var(--spacing-xs);
    transition: color var(--transition-fast);
    white-space: nowrap;
}

.navbar-menu a:hover {
    color: var(--accent-gold);
}

.navbar-menu a.active {
    color: var(--accent-gold);
}

.navbar-actions {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
}

.navbar-actions .btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.navbar-actions .btn-secondary {
    background: linear-gradient(135deg, var(--primary-red) 0%, var(--wine-red) 100%);
    color: var(--text-white);
    border: 1px solid var(--primary-red);
}

.navbar-actions .btn-secondary:hover {
    background: linear-gradient(135deg, #dc2626 0%, var(--primary-red) 100%);
    border-color: #dc2626;
}

.navbar-actions .btn-primary {
    background: linear-gradient(135deg, var(--accent-gold) 0%, #e6a940 100%);
    color: var(--primary-bg);
    border: 1px solid var(--accent-gold);
}

.navbar-actions .btn-primary:hover {
    background: linear-gradient(135deg, #f5d76e 0%, var(--accent-gold) 100%);
    border-color: var(--champagne-gold);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-white);
    margin: 3px 0;
    transition: var(--transition-fast);
}

/* === 按钮系统 === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-full);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-gold) 0%, #e6a940 100%);
    color: var(--primary-bg);
    box-shadow: 0 4px 15px rgba(139, 0, 0, 0.3);
    border: 2px solid var(--accent-gold);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(139, 0, 0, 0.4);
    background: linear-gradient(135deg, #f5d76e 0%, var(--accent-gold) 100%);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--primary-red) 0%, var(--wine-red) 100%);
    color: var(--text-white);
    border: 2px solid var(--primary-red);
    box-shadow: 0 4px 15px rgba(139, 0, 0, 0.2);
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #dc2626 0%, var(--primary-red) 100%);
    border-color: #dc2626;
    box-shadow: 0 6px 20px rgba(139, 0, 0, 0.3);
    transform: translateY(-1px);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: 1.1rem;
}

.btn-icon {
    margin-left: var(--spacing-xs);
}

/* === 卡片系统 === */
.card {
    background: linear-gradient(135deg, var(--card-bg) 0%, rgba(139, 0, 0, 0.1) 100%);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    box-shadow: 0 8px 32px rgba(139, 0, 0, 0.2);
    border: 1px solid rgba(139, 0, 0, 0.3);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-red) 0%, var(--accent-gold) 50%, var(--primary-red) 100%);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(139, 0, 0, 0.3);
    border-color: rgba(240, 193, 89, 0.5);
}

.card-header {
    margin-bottom: var(--spacing-lg);
}

.card-title {
    font-family: var(--font-secondary);
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-gold) 0%, var(--champagne-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
}

.card-image {
    width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
}

/* === 内容区域 === */
.content-section {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(180deg, var(--primary-bg) 0%, rgba(139, 0, 0, 0.05) 50%, var(--primary-bg) 100%);
    position: relative;
}

.content-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(ellipse at center, rgba(240, 193, 89, 0.03) 0%, transparent 70%);
    pointer-events: none;
}

.section-title {
    font-family: var(--font-secondary);
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-xl);
    background: linear-gradient(135deg, var(--accent-gold) 0%, var(--champagne-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    z-index: 2;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-gray);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
    z-index: 2;
}

/* === 特色区域 === */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
    position: relative;
    z-index: 2;
}

.feature-card {
    text-align: center;
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, rgba(139, 0, 0, 0.1) 0%, rgba(26, 26, 28, 0.8) 100%);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(139, 0, 0, 0.3);
    box-shadow: 0 8px 32px rgba(139, 0, 0, 0.2);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-red) 0%, var(--accent-gold) 50%, var(--primary-red) 100%);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(139, 0, 0, 0.3);
    border-color: rgba(240, 193, 89, 0.5);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent-gold) 0%, var(--champagne-gold) 100%);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-md);
    color: var(--primary-bg);
    font-size: 1.5rem;
    box-shadow: 0 4px 15px rgba(240, 193, 89, 0.3);
    border: 2px solid var(--primary-red);
}

/* === 响应式设计 === */
@media (max-width: 768px) {
    .navbar-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--primary-bg);
        flex-direction: column;
        padding: var(--spacing-lg);
        border-top: 1px solid var(--border-color);
        gap: var(--spacing-sm);
    }
    
    .navbar-menu.active {
        display: flex;
    }
    
    .navbar-menu a {
        padding: var(--spacing-sm);
        text-align: center;
    }
    
    .navbar-actions {
        gap: var(--spacing-xs);
    }
    
    .navbar-actions .btn-secondary {
        display: none;
    }
    
    .navbar-actions .btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.85rem;
    }
    
    .hamburger {
        display: flex;
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}
    
    .hero-section {
        min-height: 80vh;
        padding-top: 80px;
    }
    
    .hero-main-image {
        max-width: 280px;
    }
    
    .card {
        padding: var(--spacing-lg);
    }
    
    .content-section {
        padding: var(--spacing-xl) 0;
    }
}

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

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

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

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

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

/* === 性能优化 === */
.hero-main-image,
.card-image {
    will-change: transform;
}

/* === 无障碍支持 === */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* 焦点样式 */
.btn:focus,
.navbar-menu a:focus {
    outline: 2px solid var(--accent-gold);
    outline-offset: 2px;
}

/* === Hero区域额外样式 === */
.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: var(--spacing-xl);
}

.hero-benefits {
    display: flex;
    justify-content: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
}

.benefit-item {
    text-align: center;
    padding: var(--spacing-md);
    background: linear-gradient(135deg, rgba(139, 0, 0, 0.2) 0%, rgba(240, 193, 89, 0.1) 100%);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(139, 0, 0, 0.4);
    min-width: 120px;
    box-shadow: 0 4px 15px rgba(139, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
}

.benefit-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-red) 0%, var(--accent-gold) 100%);
}

.benefit-item strong {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-gold) 0%, var(--champagne-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-xs);
}

.benefit-item span {
    font-size: 0.9rem;
    color: var(--text-gray);
}

/* === 统计数据样式 === */
.stat-item {
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(139, 0, 0, 0.1) 0%, rgba(26, 26, 28, 0.8) 100%);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(139, 0, 0, 0.3);
    box-shadow: 0 4px 20px rgba(139, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
}

.stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-red) 0%, var(--accent-gold) 50%, var(--primary-red) 100%);
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-gold) 0%, var(--champagne-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    font-size: 1rem;
    color: var(--text-gray);
    font-weight: 500;
}

/* === 紧急横幅样式 === */
.urgency-banner {
    background: linear-gradient(135deg, var(--primary-red) 0%, #dc2626 100%);
    color: var(--champagne-gold);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    text-align: center;
    animation: pulse 2s infinite;
    border: 2px solid var(--accent-gold);
    box-shadow: 0 4px 20px rgba(139, 0, 0, 0.4);
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

/* === Footer样式 === */
.footer {
    background: linear-gradient(135deg, var(--card-bg) 0%, rgba(139, 0, 0, 0.1) 100%);
    border-top: 2px solid var(--primary-red);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
    margin-top: var(--spacing-xxl);
    position: relative;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-red) 0%, var(--accent-gold) 50%, var(--primary-red) 100%);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.footer-logo {
    width: 120px;
    height: auto;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.footer-column h4 {
    background: linear-gradient(135deg, var(--accent-gold) 0%, var(--champagne-gold) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-md);
    font-weight: 600;
}

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

.footer-column li {
    margin-bottom: var(--spacing-sm);
}

.footer-column a {
    color: var(--text-gray);
    text-decoration: none;
    transition: var(--transition-fast);
}

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

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    color: var(--text-gray);
    font-size: 0.9rem;
}

/* === 移动端Footer === */
@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .hero-benefits {
        gap: var(--spacing-md);
    }
    
    .benefit-item {
        min-width: 100px;
        padding: var(--spacing-sm);
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
}