/* Đặt lại kiểu */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Tối ưu hóa hiệu suất */
html {
    scroll-behavior: smooth;
}

/* Tải trước tài nguyên chính */
.preload {
    content: '';
    position: absolute;
    left: -9999px;
    background-image: url('./logo.png');
}

/* Tối ưu hóa hình ảnh */
img {
    max-width: 100%;
    height: auto;
    display: block;
    image-rendering: -webkit-optimize-contrast;
    image-rendering: crisp-edges;
}

/* Giảm thiểu việc vẽ lại và sắp xếp lại */
.will-change {
    will-change: transform, opacity;
}

/* Tăng tốc GPU */
.gpu-accelerated {
    transform: translateZ(0);
    backface-visibility: hidden;
    perspective: 1000px;
}

/* Biến gốc */
:root {
    --primary-color: #ff6b35;
    --secondary-color: #1a1a2e;
    --accent-color: #16213e;
    --text-primary: #ffffff;
    --text-secondary: #b8b8b8;
    --gradient-primary: linear-gradient(135deg, #ff6b35 0%, #f7931e 100%);
    --gradient-secondary: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    --gradient-dark: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 100%);
    --shadow-primary: 0 10px 30px rgba(255, 107, 53, 0.3);
    --shadow-secondary: 0 5px 15px rgba(0, 0, 0, 0.3);
    --border-radius: 12px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Kiểu cơ bản */
body {
    font-family: 'Noto Sans SC', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--gradient-dark);
    overflow-x: hidden;
    font-display: swap;
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* Thanh điều hướng */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    transition: var(--transition);
    border-bottom: 1px solid rgba(255, 107, 53, 0.1);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.brand-name {
    font-family: 'Orbitron', monospace;
    font-size: 24px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    color: var(--text-primary);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link:hover {
    color: var(--primary-color);
}

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

.bar {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    margin: 3px 0;
    transition: var(--transition);
}

/* Biểu ngữ trang chủ */
.hero {
    height: 100vh;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-dark);
    z-index: -2;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23ff6b35" stroke-width="0.5" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    animation: gridMove 20s linear infinite;
}

@keyframes gridMove {
    0% { transform: translate(0, 0); }
    100% { transform: translate(10px, 10px); }
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at center, transparent 0%, rgba(26, 26, 46, 0.8) 100%);
    z-index: -1;
}

.hero-content {
    text-align: center;
    z-index: 1;
    max-width: 800px;
    padding: 0 20px;
}

.hero-title {
    margin-bottom: 20px;
}

.title-main {
    display: block;
    font-family: 'Orbitron', monospace;
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 10px;
    animation: titleGlow 2s ease-in-out infinite alternate;
}

@keyframes titleGlow {
    from { filter: drop-shadow(0 0 20px rgba(255, 107, 53, 0.5)); }
    to { filter: drop-shadow(0 0 30px rgba(255, 107, 53, 0.8)); }
}

.title-sub {
    display: block;
    font-size: clamp(1.2rem, 3vw, 2rem);
    font-weight: 300;
    color: var(--text-secondary);
    letter-spacing: 2px;
}

.hero-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.8;
}

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

.btn {
    padding: 15px 30px;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    display: inline-block;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 15px 40px rgba(255, 107, 53, 0.4);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    transform: translateY(-2px);
}

.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
}

.scroll-indicator {
    width: 2px;
    height: 30px;
    background: var(--gradient-primary);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(1); }
    50% { opacity: 1; transform: scaleY(1.5); }
}

/* Kiểu khối chung */
section {
    padding: 100px 0;
}

.section-title {
    font-family: 'Orbitron', monospace;
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 700;
    text-align: center;
    margin-bottom: 60px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Khu vực hiển thị trò chơi */
.games-section {
    background: var(--gradient-secondary);
}

.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

.game-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid rgba(255, 107, 53, 0.1);
}

.game-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-primary);
    border-color: var(--primary-color);
}

.game-image {
    position: relative;
    overflow: hidden;
    height: 200px;
}

.game-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.game-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

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

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

.play-btn {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}

.play-btn:hover {
    transform: scale(1.05);
}

.game-info {
    padding: 20px;
}

.game-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.game-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Khu vực tính năng đặc biệt */
.features-section {
    background: var(--gradient-dark);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.feature-card {
    text-align: center;
    padding: 40px 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--border-radius);
    transition: var(--transition);
    border: 1px solid rgba(255, 107, 53, 0.1);
}

.feature-card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--primary-color);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    color: var(--primary-color);
}

.feature-icon svg {
    width: 100%;
    height: 100%;
}

.feature-title {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Regional Support Section */
.regional-support-section {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.regional-support-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="support-pattern" x="0" y="0" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="%23ffffff" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23support-pattern)"/></svg>') repeat;
    opacity: 0.3;
}

.support-regions {
    position: relative;
    z-index: 2;
}

.region-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.region-tab {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid transparent;
    color: #ffffff;
    padding: 12px 24px;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    backdrop-filter: blur(10px);
}

.region-tab:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: #00d4ff;
    transform: translateY(-2px);
}

.region-tab.active {
    background: linear-gradient(135deg, #00d4ff, #0099cc);
    border-color: #00d4ff;
    box-shadow: 0 8px 25px rgba(0, 212, 255, 0.3);
}

.support-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.support-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 25px;
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.support-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.support-card:hover::before {
    left: 100%;
}

.support-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 255, 255, 0.2);
}

.support-card.hidden {
    display: none;
}

.support-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.support-region-badge {
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.support-region-badge.north {
    background: linear-gradient(135deg, #ff6b6b, #ee5a52);
    color: white;
}

.support-region-badge.central {
    background: linear-gradient(135deg, #4ecdc4, #44a08d);
    color: white;
}

.support-region-badge.south {
    background: linear-gradient(135deg, #45b7d1, #3498db);
    color: white;
}

.support-region-badge.mekong {
    background: linear-gradient(135deg, #96ceb4, #85c1a3);
    color: white;
}

.support-status {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.support-status.online {
    background: rgba(46, 204, 113, 0.2);
    color: #2ecc71;
    border: 1px solid #2ecc71;
}

.support-title {
    color: #ffffff;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 20px;
}

.support-info {
    margin-bottom: 20px;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 15px;
    padding: 10px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    transition: all 0.3s ease;
}

.info-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateX(5px);
}

.info-icon {
    font-size: 18px;
    min-width: 20px;
}

.info-details strong {
    color: #00d4ff;
    display: block;
    margin-bottom: 4px;
    font-size: 14px;
}

.info-details p {
    color: #cccccc;
    margin: 0;
    font-size: 13px;
}

.support-languages {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.language-tag {
    background: rgba(0, 212, 255, 0.2);
    color: #00d4ff;
    padding: 4px 8px;
    border-radius: 8px;
    font-size: 11px;
    font-weight: 600;
    border: 1px solid rgba(0, 212, 255, 0.3);
}

.support-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.feature-item {
    text-align: center;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    transition: all 0.3s ease;
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-3px);
}

.feature-icon {
    font-size: 32px;
    margin-bottom: 10px;
    display: block;
}

.feature-item h4 {
    color: #ffffff;
    font-size: 16px;
    margin-bottom: 8px;
    font-weight: 600;
}

.feature-item p {
    color: #cccccc;
    font-size: 13px;
    margin: 0;
}

.emergency-contact {
    background: linear-gradient(135deg, rgba(231, 76, 60, 0.1), rgba(192, 57, 43, 0.1));
    border: 2px solid rgba(231, 76, 60, 0.3);
    border-radius: 20px;
    padding: 25px;
    text-align: center;
}

.emergency-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 15px;
}

.emergency-icon {
    font-size: 24px;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.emergency-header h3 {
    color: #e74c3c;
    font-size: 18px;
    font-weight: 700;
    margin: 0;
}

.emergency-content p {
    color: #ffffff;
    margin-bottom: 20px;
    font-size: 14px;
}

.emergency-contacts {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.emergency-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #ffffff;
    font-size: 13px;
}

.contact-icon {
    font-size: 16px;
}

.contact-text strong {
    color: #e74c3c;
}

@media (max-width: 768px) {
    .region-tabs {
        gap: 10px;
    }
    
    .region-tab {
        padding: 10px 16px;
        font-size: 14px;
    }
    
    .support-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .support-features {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .emergency-contacts {
        flex-direction: column;
        gap: 15px;
    }
}

/* Cultural Elements Section */
.cultural-elements-section {
    background: linear-gradient(135deg, #8B4513 0%, #D2691E 50%, #CD853F 100%);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.cultural-elements-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="cultural-pattern" x="0" y="0" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="2" fill="%23FFD700" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23cultural-pattern)"/></svg>') repeat;
    opacity: 0.3;
}

.cultural-content {
    position: relative;
    z-index: 2;
}

.cultural-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.cultural-tab {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid #FFD700;
    color: #FFD700;
    padding: 12px 24px;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    backdrop-filter: blur(10px);
}

.cultural-tab:hover {
    background: rgba(255, 215, 0, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 215, 0, 0.3);
}

.cultural-tab.active {
    background: linear-gradient(45deg, #FFD700, #FFA500);
    color: #8B4513;
    box-shadow: 0 5px 20px rgba(255, 215, 0, 0.4);
}

.cultural-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.cultural-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    padding: 25px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease;
    border: 2px solid transparent;
    position: relative;
    overflow: hidden;
}

.cultural-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #FFD700, #FF6B6B, #4ECDC4, #45B7D1);
}

.cultural-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: #FFD700;
}

.cultural-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.cultural-badge {
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

.cultural-badge.traditional {
    background: linear-gradient(45deg, #FF6B6B, #FF8E53);
    color: white;
}

.cultural-badge.festivals {
    background: linear-gradient(45deg, #FFD700, #FFA500);
    color: #8B4513;
}

.cultural-badge.symbols {
    background: linear-gradient(45deg, #4ECDC4, #44A08D);
    color: white;
}

.cultural-badge.cuisine {
    background: linear-gradient(45deg, #A8E6CF, #7FCDCD);
    color: #2C3E50;
}

.cultural-region {
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
}

.cultural-region.north {
    background: #E74C3C;
    color: white;
}

.cultural-region.central {
    background: #F39C12;
    color: white;
}

.cultural-region.south {
    background: #27AE60;
    color: white;
}

.cultural-region.mekong {
    background: #3498DB;
    color: white;
}

.cultural-region.national {
    background: linear-gradient(45deg, #E74C3C, #F39C12);
    color: white;
}

.cultural-content-inner {
    text-align: center;
}

.cultural-icon {
    font-size: 48px;
    margin-bottom: 15px;
    display: block;
}

.cultural-title {
    color: #2C3E50;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 10px;
}

.cultural-description {
    color: #7F8C8D;
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 20px;
}

.cultural-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin-bottom: 20px;
}

.feature-tag {
    background: rgba(52, 152, 219, 0.1);
    color: #3498DB;
    padding: 4px 8px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 500;
}

.cultural-stats {
    display: flex;
    justify-content: space-around;
    padding-top: 15px;
    border-top: 1px solid #ECF0F1;
}

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

.stat-value {
    display: block;
    font-size: 18px;
    font-weight: 700;
    color: #E74C3C;
}

.stat-label {
    font-size: 12px;
    color: #95A5A6;
    text-transform: uppercase;
}

.cultural-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-bottom: 50px;
}

.highlight-item {
    background: rgba(255, 255, 255, 0.9);
    padding: 25px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.highlight-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.highlight-icon {
    font-size: 36px;
    margin-bottom: 15px;
    display: block;
}

.highlight-item h4 {
    color: #2C3E50;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 10px;
}

.highlight-item p {
    color: #7F8C8D;
    font-size: 14px;
    line-height: 1.5;
}

.cultural-wisdom {
    background: rgba(255, 255, 255, 0.9);
    padding: 40px;
    border-radius: 20px;
    margin-bottom: 50px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.cultural-wisdom h3 {
    text-align: center;
    color: #2C3E50;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 30px;
}

.wisdom-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
}

.wisdom-item {
    text-align: center;
    padding: 20px;
    background: rgba(52, 152, 219, 0.05);
    border-radius: 15px;
    transition: all 0.3s ease;
}

.wisdom-item:hover {
    background: rgba(52, 152, 219, 0.1);
    transform: translateY(-3px);
}

.wisdom-symbol {
    font-size: 32px;
    margin-bottom: 15px;
    display: block;
}

.wisdom-item h4 {
    color: #2C3E50;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 10px;
}

.wisdom-item p {
    color: #7F8C8D;
    font-size: 13px;
    line-height: 1.5;
}

.cultural-calendar {
    background: rgba(255, 255, 255, 0.9);
    padding: 40px;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.cultural-calendar h3 {
    text-align: center;
    color: #2C3E50;
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 30px;
}

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

.event-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background: rgba(231, 76, 60, 0.05);
    border-radius: 15px;
    border-left: 4px solid #E74C3C;
    transition: all 0.3s ease;
}

.event-item:hover {
    background: rgba(231, 76, 60, 0.1);
    transform: translateX(5px);
}

.event-date {
    text-align: center;
    min-width: 80px;
}

.event-date .day {
    display: block;
    font-size: 24px;
    font-weight: 700;
    color: #E74C3C;
    line-height: 1;
}

.event-date .month {
    display: block;
    font-size: 12px;
    color: #95A5A6;
    text-transform: uppercase;
}

.event-info {
    flex: 1;
}

.event-info h4 {
    color: #2C3E50;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 5px;
}

.event-info p {
    color: #7F8C8D;
    font-size: 14px;
    margin-bottom: 8px;
}

.event-bonus {
    background: linear-gradient(45deg, #E74C3C, #C0392B);
    color: white;
    padding: 4px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
}

@media (max-width: 768px) {
    .cultural-elements-section {
        padding: 60px 0;
    }
    
    .cultural-tabs {
        gap: 10px;
    }
    
    .cultural-tab {
        padding: 10px 16px;
        font-size: 14px;
    }
    
    .cultural-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .cultural-card {
        padding: 20px;
    }
    
    .cultural-highlights {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .wisdom-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .event-item {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .cultural-wisdom,
    .cultural-calendar {
        padding: 25px;
    }
}

@media (max-width: 480px) {
    .wisdom-grid {
        grid-template-columns: 1fr;
    }
    
    .cultural-features {
        flex-direction: column;
        align-items: center;
    }
}

/* Regional Sports Section */
.regional-sports-section {
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);
    padding: 80px 0;
    color: white;
    position: relative;
    overflow: hidden;
}

.regional-sports-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="sports-pattern" x="0" y="0" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="%23ffffff" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23sports-pattern)"/></svg>') repeat;
    opacity: 0.3;
}

.sports-tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
    flex-wrap: wrap;
    gap: 15px;
    position: relative;
    z-index: 2;
}

.sports-tab {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid transparent;
    color: white;
    padding: 12px 24px;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    backdrop-filter: blur(10px);
}

.sports-tab:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: #FFD700;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.3);
}

.sports-tab.active {
    background: linear-gradient(135deg, #FFD700, #FFA000);
    color: #1e3c72;
    border-color: #FFD700;
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.4);
}

.sports-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
    position: relative;
    z-index: 2;
}

.sports-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 25px;
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.sports-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 215, 0, 0.1), transparent);
    transition: left 0.5s ease;
}

.sports-card:hover::before {
    left: 100%;
}

.sports-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 215, 0, 0.3);
}

.sports-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.sports-badge {
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    z-index: 2;
    position: relative;
}

.sports-badge.football {
    background: linear-gradient(135deg, #4CAF50, #45a049);
    color: white;
}

.sports-badge.volleyball {
    background: linear-gradient(135deg, #FF9800, #f57c00);
    color: white;
}

.sports-badge.basketball {
    background: linear-gradient(135deg, #FF5722, #d84315);
    color: white;
}

.sports-badge.traditional {
    background: linear-gradient(135deg, #9C27B0, #7b1fa2);
    color: white;
}

.sports-status {
    padding: 6px 12px;
    border-radius: 15px;
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    z-index: 2;
    position: relative;
}

.sports-status.live {
    background: rgba(244, 67, 54, 0.9);
    color: white;
    animation: pulse 2s infinite;
}

.sports-status.upcoming {
    background: rgba(33, 150, 243, 0.9);
    color: white;
}

@keyframes pulse {
    0% { opacity: 1; }
    50% { opacity: 0.7; }
    100% { opacity: 1; }
}

.sports-title {
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(135deg, #FFD700, #FFA000);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.match-info {
    margin-bottom: 20px;
}

.teams {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 15px;
    padding: 15px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
}

.team {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    flex: 1;
}

.team-logo {
    font-size: 2em;
    margin-bottom: 8px;
}

.team-name {
    font-weight: 600;
    font-size: 14px;
    color: #fff;
}

.vs {
    font-weight: bold;
    font-size: 1.2em;
    color: #FFD700;
    margin: 0 15px;
}

.match-details {
    text-align: center;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.9);
}

.time {
    font-weight: 600;
    margin-bottom: 5px;
    color: #FFD700;
}

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

.betting-odds {
    display: flex;
    gap: 10px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.odd-item {
    flex: 1;
    min-width: 80px;
    background: rgba(255, 255, 255, 0.1);
    padding: 10px 8px;
    border-radius: 8px;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
}

.odd-item:hover {
    background: rgba(255, 215, 0, 0.2);
    transform: scale(1.05);
}

.odd-label {
    display: block;
    font-size: 11px;
    margin-bottom: 5px;
    color: rgba(255, 255, 255, 0.9);
}

.odd-value {
    display: block;
    font-weight: bold;
    font-size: 16px;
    color: #FFD700;
}

.region-tag {
    position: absolute;
    top: 15px;
    right: 15px;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
    z-index: 2;
}

.region-tag.north {
    background: linear-gradient(135deg, #4CAF50, #45a049);
    color: white;
}

.region-tag.central {
    background: linear-gradient(135deg, #FF9800, #f57c00);
    color: white;
}

.region-tag.south {
    background: linear-gradient(135deg, #2196F3, #1976D2);
    color: white;
}

.region-tag.mekong {
    background: linear-gradient(135deg, #9C27B0, #7b1fa2);
    color: white;
}

.sports-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
    margin-bottom: 50px;
    position: relative;
    z-index: 2;
}

.sports-feature {
    text-align: center;
    padding: 25px 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.sports-feature:hover {
    transform: translateY(-5px);
    background: rgba(255, 215, 0, 0.1);
    border-color: rgba(255, 215, 0, 0.3);
}

.sports-feature-icon {
    font-size: 40px;
    margin-bottom: 15px;
    display: block;
    color: #FFD700;
}

.sports-feature h4 {
    margin: 0 0 10px 0;
    font-size: 18px;
    color: #fff;
    font-weight: 600;
}

.sports-feature p {
    margin: 0;
    font-size: 14px;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.6;
}

.popular-leagues {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    padding: 30px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    position: relative;
    z-index: 2;
}

.popular-leagues h3 {
    text-align: center;
    margin-bottom: 30px;
    font-size: 24px;
    color: #FFD700;
    font-weight: 700;
}

.leagues-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.league-item {
    display: flex;
    align-items: center;
    padding: 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.league-item:hover {
    background: rgba(255, 215, 0, 0.1);
    transform: translateX(5px);
    border-color: rgba(255, 215, 0, 0.3);
}

.league-icon {
    font-size: 32px;
    margin-right: 15px;
    color: #FFD700;
}

.league-info {
    flex: 1;
}

.league-info h4 {
    margin: 0 0 5px 0;
    font-size: 16px;
    color: #fff;
    font-weight: 600;
}

.league-info p {
    margin: 0;
    font-size: 13px;
    color: rgba(255, 255, 255, 0.8);
}

.league-matches {
    background: rgba(255, 215, 0, 0.2);
    color: #FFD700;
    padding: 5px 10px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
    border: 1px solid rgba(255, 215, 0, 0.3);
}

@media (max-width: 768px) {
    .sports-tabs {
        gap: 10px;
    }
    
    .sports-tab {
        padding: 10px 16px;
        font-size: 14px;
    }
    
    .sports-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .teams {
        flex-direction: column;
        gap: 15px;
    }
    
    .vs {
        margin: 0;
        transform: rotate(90deg);
    }
    
    .betting-odds {
        justify-content: center;
    }
    
    .sports-features {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .leagues-grid {
        grid-template-columns: 1fr;
    }
    
    .popular-leagues {
        padding: 20px;
    }
}

/* Festival Promotions Section */
.festival-promotions-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    position: relative;
    overflow: hidden;
}

.festival-promotions-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="festivalPattern" x="0" y="0" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="%23ffd700" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23festivalPattern)"/></svg>') repeat;
    opacity: 0.3;
}

.festival-calendar {
    position: relative;
    z-index: 2;
}

.festival-tabs {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.festival-tab {
    padding: 12px 24px;
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid transparent;
    border-radius: 25px;
    color: #fff;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.festival-tab::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 215, 0, 0.3), transparent);
    transition: left 0.5s ease;
}

.festival-tab:hover::before {
    left: 100%;
}

.festival-tab:hover {
    border-color: #ffd700;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.3);
}

.festival-tab.active {
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    color: #1a1a2e;
    border-color: #ffd700;
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.4);
}

.festivals-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.festival-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 20px;
    overflow: hidden;
    backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    position: relative;
    display: none;
}

.festival-card[data-festivals*="current"] {
    display: block;
}

.festival-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 215, 0, 0.3);
}

.festival-banner {
    background: linear-gradient(135deg, #ff6b6b, #ee5a24);
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.festival-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 10px,
        rgba(255, 255, 255, 0.1) 10px,
        rgba(255, 255, 255, 0.1) 20px
    );
    animation: festivalShine 3s linear infinite;
}

@keyframes festivalShine {
    0% { transform: translateX(-100%) translateY(-100%); }
    100% { transform: translateX(100%) translateY(100%); }
}

.festival-date {
    color: #fff;
    font-weight: 700;
    font-size: 14px;
    z-index: 2;
    position: relative;
}

.festival-region-tag {
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
    color: #fff;
    z-index: 2;
    position: relative;
}

.festival-region-tag.north {
    background: linear-gradient(135deg, #667eea, #764ba2);
}

.festival-region-tag.south {
    background: linear-gradient(135deg, #f093fb, #f5576c);
}

.festival-region-tag.central {
    background: linear-gradient(135deg, #4facfe, #00f2fe);
}

.festival-region-tag.mekong {
    background: linear-gradient(135deg, #43e97b, #38f9d7);
}

.festival-region-tag.national {
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    color: #1a1a2e;
}

.festival-content {
    padding: 25px;
}

.festival-title {
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 10px;
    background: linear-gradient(135deg, #ffd700, #ffed4e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.festival-description {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 20px;
}

.festival-offers {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 20px;
}

.offer-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    background: rgba(255, 215, 0, 0.1);
    border-radius: 10px;
    border-left: 3px solid #ffd700;
}

.offer-icon {
    font-size: 16px;
}

.offer-text {
    color: #fff;
    font-weight: 600;
    font-size: 14px;
}

.festival-progress {
    display: flex;
    align-items: center;
    gap: 15px;
}

.progress-bar {
    flex: 1;
    height: 8px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, #ffd700, #ffed4e);
    border-radius: 4px;
    transition: width 0.3s ease;
    position: relative;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
    animation: progressShine 2s ease-in-out infinite;
}

@keyframes progressShine {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.progress-text {
    color: #ffd700;
    font-weight: 600;
    font-size: 12px;
    white-space: nowrap;
}

.festival-countdown {
    text-align: center;
}

.countdown-text {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    margin-bottom: 10px;
    display: block;
}

.countdown-timer {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.countdown-item {
    background: rgba(255, 215, 0, 0.2);
    border: 2px solid #ffd700;
    border-radius: 10px;
    padding: 8px 12px;
    color: #fff;
    font-weight: 700;
    font-size: 16px;
    min-width: 50px;
    text-align: center;
}

.countdown-item small {
    display: block;
    font-size: 10px;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.7);
    margin-top: 2px;
}

.festival-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.highlight-item {
    text-align: center;
    padding: 30px 20px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.highlight-item:hover {
    transform: translateY(-5px);
    background: rgba(255, 215, 0, 0.1);
    border-color: rgba(255, 215, 0, 0.3);
}

.highlight-icon {
    font-size: 40px;
    margin-bottom: 15px;
    display: block;
}

.highlight-item h4 {
    color: #fff;
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 10px;
}

.highlight-item p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .festival-promotions-section {
        padding: 60px 0;
    }
    
    .festival-tabs {
        gap: 10px;
    }
    
    .festival-tab {
        padding: 10px 16px;
        font-size: 14px;
    }
    
    .festivals-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .festival-content {
        padding: 20px;
    }
    
    .festival-title {
        font-size: 18px;
    }
    
    .countdown-timer {
        gap: 10px;
    }
    
    .countdown-item {
        padding: 6px 8px;
        font-size: 14px;
        min-width: 40px;
    }
    
    .festival-highlights {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .highlight-item {
        padding: 20px 15px;
    }
}

/* Khu vực tin tức */
.news-section {
    background: var(--gradient-secondary);
}

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

.news-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    overflow: hidden;
    transition: var(--transition);
    border: 1px solid rgba(255, 107, 53, 0.1);
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-secondary);
    border-color: var(--primary-color);
}

.news-image {
    height: 200px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.news-card:hover .news-image img {
    transform: scale(1.05);
}

.news-content {
    padding: 25px;
}

.news-meta {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
    font-size: 0.85rem;
}

.news-date {
    color: var(--text-secondary);
}

.news-category {
    color: var(--primary-color);
    font-weight: 500;
}

.news-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.news-excerpt {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 15px;
}

.news-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.news-link:hover {
    color: #ff8c5a;
}

/* Khu vực liên hệ */
.contact-section {
    background: var(--gradient-dark);
}

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

.contact-info h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.contact-info p {
    color: var(--text-secondary);
    margin-bottom: 30px;
    line-height: 1.6;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-method {
    display: flex;
    align-items: center;
    gap: 15px;
    color: var(--text-secondary);
}

.contact-icon {
    font-size: 1.2rem;
}

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

.form-group {
    display: flex;
    flex-direction: column;
}

.form input,
.form textarea {
    padding: 15px;
    border: 1px solid rgba(255, 107, 53, 0.2);
    border-radius: var(--border-radius);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    font-size: 1rem;
    transition: var(--transition);
}

.form input:focus,
.form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}

.form input::placeholder,
.form textarea::placeholder {
    color: var(--text-secondary);
}

/* Chân trang */
.footer {
    background: var(--accent-color);
    padding: 60px 0 20px;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.footer-logo img {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.footer-logo span {
    font-family: 'Orbitron', monospace;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.footer-section h4 {
    color: var(--text-primary);
    margin-bottom: 20px;
    font-size: 1.1rem;
}

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

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

.footer-section ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: var(--transition);
}

.footer-section ul li a:hover {
    color: var(--primary-color);
}

.footer-section p {
    color: var(--text-secondary);
    line-height: 1.6;
}

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

.social-link {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 8px 12px;
    border: 1px solid rgba(255, 107, 53, 0.2);
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.social-link:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    background: rgba(255, 107, 53, 0.1);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 107, 53, 0.1);
    color: var(--text-secondary);
}

/* Thiết kế đáp ứng */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: rgba(26, 26, 46, 0.98);
        width: 100%;
        text-align: center;
        transition: var(--transition);
        padding: 20px 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active .bar:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .nav-toggle.active .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 200px;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .games-grid {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .news-grid {
        grid-template-columns: 1fr;
    }

    section {
        padding: 60px 0;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .nav-container {
        padding: 0 15px;
    }

    .hero-content {
        padding: 0 15px;
    }

    .game-info,
    .news-content {
        padding: 20px 15px;
    }

    .feature-card {
        padding: 30px 15px;
    }
}

/* Kiểu thanh cuộn */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--secondary-color);
}

::-webkit-scrollbar-thumb {
    background: var(--gradient-primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #ff8c5a 0%, #ffb347 100%);
}

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

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

/* Kiểu chọn văn bản */
::selection {
    background: rgba(255, 107, 53, 0.3);
    color: var(--text-primary);
}

::-moz-selection {
    background: rgba(255, 107, 53, 0.3);
    color: var(--text-primary);
}

/* Logo Link Styles */
.logo-link {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

.logo-link:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

/* Regional Localization Section */
.regional-section {
    background: var(--gradient-dark);
    position: relative;
    overflow: hidden;
}

.regional-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(255, 107, 53, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(255, 107, 53, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 50px;
    line-height: 1.6;
}

.region-selector {
    max-width: 1000px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.region-tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 40px;
    padding: 0 20px;
}

.region-tab {
    padding: 12px 24px;
    border: 2px solid rgba(255, 107, 53, 0.3);
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    font-size: 0.95rem;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.region-tab::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    transition: var(--transition);
    z-index: -1;
}

.region-tab:hover {
    color: var(--text-primary);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(255, 107, 53, 0.2);
}

.region-tab:hover::before {
    left: 0;
}

.region-tab.active {
    background: var(--gradient-primary);
    color: white;
    border-color: var(--primary-color);
    box-shadow: var(--shadow-primary);
    transform: translateY(-2px);
}

.region-tab.active::before {
    left: 0;
}

.region-content {
    position: relative;
    min-height: 400px;
}

.region-panel {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.region-panel.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    position: relative;
}

.region-info {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    padding: 40px;
    border: 1px solid rgba(255, 107, 53, 0.1);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-secondary);
}

.region-header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid rgba(255, 107, 53, 0.2);
}

.region-header h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 15px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.3;
}

.region-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
    line-height: 1.6;
}

.region-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
}

.feature-item {
    display: flex;
    align-items: flex-start;
    gap: 15px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 107, 53, 0.1);
    transition: var(--transition);
}

.feature-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 107, 53, 0.3);
    transform: translateY(-2px);
}

.feature-icon {
    font-size: 1.5rem;
    min-width: 24px;
    margin-top: 2px;
}

.feature-text h4 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
    line-height: 1.3;
}

.feature-text p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
}

/* Regional Game Filter */
.regional-game-filter {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.filter-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid transparent;
    color: #ffffff;
    padding: 12px 24px;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    font-size: 14px;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.filter-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;
}

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

.filter-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.3);
}

.filter-btn.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-color: var(--primary-color);
    color: #000;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.4);
}

/* Regional Game Cards */
.regional-games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.regional-game {
    transition: all 0.3s ease;
}

.regional-game.hidden {
    display: none;
}

.regional-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
    color: #fff;
    z-index: 2;
    backdrop-filter: blur(10px);
}

.hcm-badge {
    background: linear-gradient(135deg, #ff6b6b, #ee5a24);
}

.hanoi-badge {
    background: linear-gradient(135deg, #4834d4, #686de0);
}

.coastal-badge {
    background: linear-gradient(135deg, #00d2d3, #54a0ff);
}

.central-badge {
    background: linear-gradient(135deg, #ff9ff3, #f368e0);
}

.mekong-badge {
    background: linear-gradient(135deg, #7bed9f, #70a1ff);
}

.south-badge {
    background: linear-gradient(135deg, #ffa726, #ff7043);
}

.royal-badge {
    background: linear-gradient(135deg, #ffd700, #ffb300);
}

.resort-badge {
    background: linear-gradient(135deg, #00cec9, #74b9ff);
}

.game-stats {
    display: flex;
    gap: 15px;
    margin-top: 10px;
    font-size: 12px;
    color: #b0b0b0;
}

.game-stats span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.game-rating {
    color: #ffd700;
}

.game-players {
    color: #4ecdc4;
}

.game-region {
    color: var(--primary-color);
}

/* Regional Section Responsive */
@media (max-width: 768px) {
    .region-tabs {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }
    
    .region-tab {
        padding: 10px 16px;
        font-size: 0.85rem;
    }
    
    .region-info {
        padding: 25px 20px;
    }
    
    .region-header h3 {
        font-size: 1.4rem;
    }
    
    .region-features {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .feature-item {
        padding: 15px;
    }
}

@media (max-width: 480px) {
    .region-tabs {
        grid-template-columns: 1fr;
    }
    
    .region-tab {
        padding: 12px 20px;
        font-size: 0.9rem;
    }
    
    .region-info {
        padding: 20px 15px;
    }
    
    .region-header {
        margin-bottom: 25px;
        padding-bottom: 20px;
    }
    
    .region-header h3 {
        font-size: 1.2rem;
    }
    
    .feature-item {
        flex-direction: column;
        text-align: center;
        gap: 10px;
    }
    
    .feature-icon {
        align-self: center;
    }
}

/* Regional Payment Methods Section */
.regional-payment-section {
    padding: 80px 0;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 100%);
    position: relative;
}

.regional-payment-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="payment-pattern" x="0" y="0" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="%23ffd700" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23payment-pattern)"/></svg>') repeat;
    opacity: 0.3;
}

.payment-regions {
    position: relative;
    z-index: 2;
}

.payment-region-tabs {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.payment-tab {
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid transparent;
    color: #fff;
    padding: 12px 24px;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 600;
    font-size: 14px;
    backdrop-filter: blur(10px);
}

.payment-tab:hover {
    background: rgba(255, 215, 0, 0.2);
    border-color: var(--accent-color);
    transform: translateY(-2px);
}

.payment-tab.active {
    background: linear-gradient(135deg, var(--accent-color), #ffed4e);
    color: #000;
    border-color: var(--accent-color);
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.3);
}

.payment-methods-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 25px;
    margin-bottom: 50px;
}

.payment-method-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 25px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
}

.payment-method-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 215, 0, 0.1), transparent);
    transition: left 0.5s ease;
}

.payment-method-card:hover::before {
    left: 100%;
}

.payment-method-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-color);
    box-shadow: 0 15px 35px rgba(255, 215, 0, 0.2);
}

.payment-method-card.hidden {
    display: none;
}

.payment-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--accent-color), #ffed4e);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    box-shadow: 0 8px 20px rgba(255, 215, 0, 0.3);
}

.payment-icon svg {
    width: 30px;
    height: 30px;
    color: #000;
}

.payment-title {
    font-size: 20px;
    font-weight: 700;
    color: #fff;
    margin-bottom: 10px;
}

.payment-description {
    color: #ccc;
    font-size: 14px;
    line-height: 1.6;
    margin-bottom: 20px;
}

.payment-features {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.payment-feature {
    background: rgba(255, 215, 0, 0.2);
    color: var(--accent-color);
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 12px;
    font-weight: 600;
    border: 1px solid rgba(255, 215, 0, 0.3);
}

.payment-region-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.payment-region-badge.hcm {
    background: linear-gradient(135deg, #ff6b6b, #ee5a52);
    color: #fff;
}

.payment-region-badge.hanoi {
    background: linear-gradient(135deg, #4ecdc4, #44a08d);
    color: #fff;
}

.payment-region-badge.central {
    background: linear-gradient(135deg, #45b7d1, #96c93d);
    color: #fff;
}

.payment-region-badge.mekong {
    background: linear-gradient(135deg, #f093fb, #f5576c);
    color: #fff;
}

.payment-support-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 25px;
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.support-item {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 25px;
    text-align: center;
    backdrop-filter: blur(10px);
}

.support-item h4 {
    color: var(--accent-color);
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 15px;
}

.support-item p {
    color: #ccc;
    font-size: 14px;
    margin-bottom: 8px;
}

@media (max-width: 768px) {
    .payment-region-tabs {
        gap: 10px;
    }
    
    .payment-tab {
        padding: 10px 16px;
        font-size: 12px;
    }
    
    .payment-methods-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .payment-method-card {
        padding: 20px;
    }
    
    .payment-support-info {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

/* Reviews Section */
.reviews-section {
    padding: 100px 0;
    background: var(--gradient-secondary);
    position: relative;
}

.reviews-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="%23ffffff" opacity="0.02"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>') repeat;
    pointer-events: none;
}

.reviews-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin: 50px 0;
}

.review-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    padding: 30px;
    border: 1px solid rgba(255, 107, 53, 0.1);
    transition: var(--transition);
    backdrop-filter: blur(10px);
}

.review-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-primary);
    border-color: rgba(255, 107, 53, 0.3);
}

.review-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
}

.reviewer-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.reviewer-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
}

.reviewer-name {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 5px;
}

.review-rating .stars {
    font-size: 16px;
    color: #ffd700;
}

.review-date {
    color: var(--text-secondary);
    font-size: 14px;
}

.review-content p {
    font-style: italic;
    line-height: 1.7;
    color: var(--text-secondary);
}

.reviews-summary {
    text-align: center;
    margin-top: 50px;
    padding: 40px;
    background: rgba(255, 107, 53, 0.1);
    border-radius: var(--border-radius);
    border: 1px solid rgba(255, 107, 53, 0.2);
}

.rating-score {
    font-size: 48px;
    font-weight: 900;
    color: var(--primary-color);
    display: block;
    margin-bottom: 10px;
}

.rating-stars {
    font-size: 24px;
    margin-bottom: 15px;
}

.rating-text {
    color: var(--text-secondary);
    font-size: 16px;
}

/* FAQ Section */
.faq-section {
    padding: 100px 0;
    background: var(--gradient-dark);
    position: relative;
}

.faq-container {
    max-width: 800px;
    margin: 50px auto 0;
}

.faq-item {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    border: 1px solid rgba(255, 107, 53, 0.1);
    overflow: hidden;
    transition: var(--transition);
}

.faq-item:hover {
    border-color: rgba(255, 107, 53, 0.3);
}

.faq-question {
    padding: 25px 30px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(255, 255, 255, 0.02);
    transition: var(--transition);
}

.faq-question:hover {
    background: rgba(255, 107, 53, 0.1);
}

.faq-question h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.faq-toggle {
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    transition: var(--transition);
    min-width: 30px;
    text-align: center;
}

.faq-answer {
    padding: 0 30px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 30px 25px;
    max-height: 200px;
}

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

.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

/* Responsive Design for New Sections */
@media (max-width: 768px) {
    .reviews-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .review-card {
        padding: 20px;
    }
    
    .reviewer-info {
        gap: 10px;
    }
    
    .reviewer-avatar {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
    
    .rating-score {
        font-size: 36px;
    }
    
    .faq-question {
        padding: 20px;
    }
    
    .faq-question h3 {
        font-size: 16px;
    }
    
    .faq-item.active .faq-answer {
        padding: 0 20px 20px;
    }
}