/**
 * May88 Theme Stylesheet
 * Core Keyword: may88
 * Primary Keyword: may88 đăng nhập
 * Secondary Keyword: may88 vip
 */

/* ============================================
   CSS VARIABLES
   ============================================ */
:root {
    --color-primary: #1a1a2e;
    --color-secondary: #16213e;
    --color-accent: #e94560;
    --color-accent-hover: #ff6b6b;
    --color-gold: #ffd700;
    --color-text: #ffffff;
    --color-text-muted: #b8b8b8;
    --color-bg: #0f0f1a;
    --color-card: #1a1a2e;
    --color-border: #2a2a4a;
    --font-primary: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --transition: all 0.3s ease;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 8px 30px rgba(233, 69, 96, 0.2);
}

/* ============================================
   RESET & BASE
   ============================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

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

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

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

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

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

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-block;
    padding: 12px 30px;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border-radius: 5px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover));
    color: var(--color-text);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
    color: var(--color-text);
}

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

.btn-secondary:hover {
    background: var(--color-accent);
    color: var(--color-text);
}

.btn-large {
    padding: 15px 40px;
    font-size: 1.1rem;
}

/* ============================================
   HEADER
   ============================================ */
.site-header {
    background-color: var(--color-primary);
    padding: 15px 0;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: var(--shadow);
}

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

/* Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 25px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 1100;
}

.menu-bar {
    width: 100%;
    height: 3px;
    background-color: var(--color-text);
    border-radius: 2px;
    transition: var(--transition);
}

/* Desktop Navigation */
.nav-desktop {
    flex: 1;
}

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

.primary-menu a {
    font-weight: 500;
    padding: 10px 0;
    position: relative;
}

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

.primary-menu a:hover::after {
    width: 100%;
}

/* Mobile Navigation */
.nav-mobile {
    display: none;
    position: fixed;
    top: 0;
    left: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background-color: var(--color-secondary);
    padding: 80px 30px 30px;
    transition: var(--transition);
    z-index: 1000;
}

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

.mobile-menu {
    list-style: none;
}

.mobile-menu li {
    margin-bottom: 20px;
}

.mobile-menu a {
    font-size: 1.1rem;
    font-weight: 500;
    display: block;
    padding: 10px 0;
    border-bottom: 1px solid var(--color-border);
}

/* Header Actions */
.header-actions {
    display: flex;
    gap: 15px;
}

.btn-login {
    background-color: transparent;
    border: 2px solid var(--color-text);
    color: var(--color-text);
    padding: 10px 25px;
}

.btn-login:hover {
    background-color: var(--color-text);
    color: var(--color-primary);
}

.btn-register {
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover));
    color: var(--color-text);
    padding: 10px 25px;
}

.btn-register:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-hover);
    color: var(--color-text);
}

/* ============================================
   MAIN CONTENT
   ============================================ */
.site-main {
    margin-top: 70px;
    min-height: calc(100vh - 70px - 300px);
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero-section {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    padding: 100px 0;
    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(233, 69, 96, 0.1) 0%, transparent 50%);
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero-title {
    font-size: 2.8rem;
    font-weight: 700;
    margin-bottom: 25px;
    line-height: 1.2;
    background: linear-gradient(135deg, var(--color-text), var(--color-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

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

/* ============================================
   FEATURES SECTION
   ============================================ */
.features-section {
    padding: 80px 0;
    background-color: var(--color-bg);
}

.section-title {
    font-size: 2.2rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 50px;
    color: var(--color-text);
}

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

.feature-card {
    background-color: var(--color-card);
    padding: 35px 30px;
    border-radius: 10px;
    text-align: center;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-accent);
    box-shadow: var(--shadow-hover);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    font-size: 1.8rem;
}

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

.feature-description {
    color: var(--color-text-muted);
    line-height: 1.7;
    font-size: 0.95rem;
}

/* ============================================
   STATS SECTION
   ============================================ */
.stats-section {
    padding: 60px 0;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-primary));
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    text-align: center;
}

.stat-item {
    padding: 20px;
}

.stat-number {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: 10px;
}

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

/* ============================================
   PRODUCTS SECTION
   ============================================ */
.products-section {
    padding: 80px 0;
    background-color: var(--color-bg);
}

.product-block {
    background-color: var(--color-card);
    padding: 40px;
    border-radius: 10px;
    margin-bottom: 30px;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.product-block:hover {
    border-color: var(--color-accent);
}

.product-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--color-text);
    padding-bottom: 15px;
    border-bottom: 2px solid var(--color-accent);
}

.product-description {
    color: var(--color-text-muted);
    line-height: 1.8;
    font-size: 1rem;
}

/* ============================================
   ADVANTAGES SECTION
   ============================================ */
.advantages-section {
    padding: 80px 0;
    background-color: var(--color-primary);
}

.advantage-item {
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--color-border);
}

.advantage-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.advantage-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--color-text);
}

.advantage-description {
    color: var(--color-text-muted);
    line-height: 1.8;
    font-size: 1rem;
}

/* ============================================
   CTA SECTION
   ============================================ */
.cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover));
    text-align: center;
}

.cta-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--color-text);
}

.cta-description {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    margin: 0 auto 40px;
    line-height: 1.7;
}

.cta-actions {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.cta-section .btn-secondary {
    border-color: var(--color-text);
    color: var(--color-text);
}

.cta-section .btn-secondary:hover {
    background-color: var(--color-text);
    color: var(--color-accent);
}

/* ============================================
   PAGE HEADER
   ============================================ */
.page-header {
    background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
    padding: 80px 0 60px;
    text-align: center;
}

.page-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 15px;
    color: var(--color-text);
}

.page-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-muted);
    max-width: 700px;
    margin: 0 auto;
}

/* ============================================
   PAGE CONTENT
   ============================================ */
.page-content {
    padding: 60px 0;
    background-color: var(--color-bg);
}

.content-wrapper {
    max-width: 900px;
    margin: 0 auto;
}

.content-wrapper h2 {
    font-size: 1.8rem;
    font-weight: 600;
    margin: 40px 0 20px;
    color: var(--color-text);
}

.content-wrapper h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin: 30px 0 15px;
    color: var(--color-text);
}

.content-wrapper p {
    color: var(--color-text-muted);
    line-height: 1.8;
    margin-bottom: 20px;
}

.page-additional-content {
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid var(--color-border);
}

.page-cta {
    margin-top: 40px;
    padding: 40px;
    background-color: var(--color-card);
    border-radius: 10px;
    text-align: center;
}

.page-cta h3 {
    margin-top: 0;
}

.page-cta .btn {
    margin: 10px;
}

/* ============================================
   SPORTS PAGE
   ============================================ */
.sports-content .feature-block,
.sports-content .sports-guide {
    margin-bottom: 40px;
}

.sports-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin: 25px 0 15px;
    color: var(--color-text);
}

.sports-cta {
    margin-top: 50px;
    margin-bottom: 50px;
    padding: 50px;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-primary));
    border-radius: 10px;
    text-align: center;
}

/* ============================================
   CASINO PAGE
   ============================================ */
.casino-content .game-block {
    background-color: var(--color-card);
    padding: 30px;
    border-radius: 10px;
    margin-bottom: 25px;
    border: 1px solid var(--color-border);
}

.casino-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--color-text);
}

.casino-cta {
    margin-top: 50px;
    margin-bottom: 50px;
    padding: 50px;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-primary));
    border-radius: 10px;
    text-align: center;
}

/* ============================================
   PROMOTIONS PAGE
   ============================================ */
.promotion-item {
    background-color: var(--color-card);
    padding: 35px;
    border-radius: 10px;
    margin-bottom: 30px;
    border: 1px solid var(--color-border);
    transition: var(--transition);
}

.promotion-item:hover {
    border-color: var(--color-accent);
    transform: translateX(5px);
}

.promotion-title {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--color-accent);
}

.promotion-terms {
    list-style: none;
    margin-top: 20px;
}

.promotion-terms li {
    padding: 10px 0;
    padding-left: 25px;
    position: relative;
    color: var(--color-text-muted);
    border-bottom: 1px solid var(--color-border);
}

.promotion-terms li:last-child {
    border-bottom: none;
}

.promotion-terms li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-accent);
    font-weight: bold;
}

.promotions-cta {
    margin-top: 50px;
    margin-bottom: 50px;
    padding: 50px;
    background: linear-gradient(135deg, var(--color-accent), var(--color-accent-hover));
    border-radius: 10px;
    text-align: center;
}

/* ============================================
   ABOUT PAGE
   ============================================ */
.about-content .about-intro,
.about-content .about-mission,
.about-content .about-values,
.about-content .about-products,
.about-content .about-contact {
    margin-bottom: 50px;
}

.about-content h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin: 25px 0 15px;
    color: var(--color-text);
}

.about-stats {
    margin: 50px 0;
    padding: 50px;
    background: linear-gradient(135deg, var(--color-secondary), var(--color-primary));
    border-radius: 10px;
}

.about-stats .section-title {
    margin-bottom: 40px;
}

.stat-box {
    text-align: center;
    padding: 20px;
}

.value-item {
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid var(--color-border);
}

.value-item:last-child {
    border-bottom: none;
}

.about-cta {
    margin-top: 50px;
    margin-bottom: 50px;
    padding: 50px;
    background-color: var(--color-card);
    border-radius: 10px;
    text-align: center;
}

/* ============================================
   FOOTER
   ============================================ */
.site-footer {
    background-color: var(--color-primary);
    padding: 60px 0 30px;
    border-top: 1px solid var(--color-border);
}

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

.footer-nav {
    margin-bottom: 30px;
}

.footer-menu {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    list-style: none;
    gap: 30px;
}

.footer-menu a {
    color: var(--color-text-muted);
    transition: var(--transition);
}

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

.footer-info {
    max-width: 800px;
    margin: 0 auto 40px;
}

.footer-description {
    color: var(--color-text-muted);
    line-height: 1.8;
    font-size: 0.95rem;
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--color-border);
}

.copyright {
    color: var(--color-text);
    font-weight: 500;
    margin-bottom: 10px;
}

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

/* ============================================
   SIDEBAR
   ============================================ */
.sidebar {
    background-color: var(--color-card);
    padding: 30px;
    border-radius: 10px;
    border: 1px solid var(--color-border);
}

.widget-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 15px;
    color: var(--color-text);
    padding-bottom: 10px;
    border-bottom: 2px solid var(--color-accent);
}

.widget p {
    color: var(--color-text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 992px) {
    .hero-title {
        font-size: 2.2rem;
    }
    
    .section-title {
        font-size: 1.8rem;
    }
    
    .features-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    }
}

@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }
    
    .nav-desktop {
        display: none;
    }
    
    .nav-mobile {
        display: block;
    }
    
    .header-actions {
        gap: 10px;
    }
    
    .btn-login,
    .btn-register {
        padding: 8px 15px;
        font-size: 0.85rem;
    }
    
    .hero-section {
        padding: 70px 0;
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .hero-actions .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .section-title {
        font-size: 1.6rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .stat-number {
        font-size: 2rem;
    }
    
    .product-block,
    .promotion-item,
    .game-block {
        padding: 25px;
    }
    
    .cta-title {
        font-size: 1.8rem;
    }
    
    .cta-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .cta-actions .btn {
        width: 100%;
        max-width: 280px;
    }
    
    .page-title {
        font-size: 1.8rem;
    }
    
    .footer-menu {
        flex-direction: column;
        gap: 15px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }
    
    .hero-title {
        font-size: 1.5rem;
    }
    
    .section-title {
        font-size: 1.4rem;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .feature-card {
        padding: 25px 20px;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .btn-large {
        padding: 12px 25px;
        font-size: 1rem;
    }
}

/* ============================================
   IMAGES
   ============================================ */
.hero-image,
.product-image,
.cta-image,
.page-image {
    margin: 30px 0;
    text-align: center;
}

.hero-image img,
.product-image img,
.cta-image img,
.page-image img {
    max-width: 100%;
    height: auto;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.hero-image img:hover,
.product-image img:hover,
.cta-image img:hover,
.page-image img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-hover);
}

.hero-image img {
    max-height: 400px;
    object-fit: cover;
}

.product-image img {
    max-height: 300px;
    object-fit: cover;
}

.cta-image img {
    max-height: 250px;
    object-fit: cover;
}

.page-image img {
    max-height: 350px;
    object-fit: cover;
}

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

.feature-card,
.product-block,
.promotion-item {
    animation: fadeInUp 0.6s ease forwards;
}

/* ============================================
   ACCESSIBILITY
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for keyboard navigation */
a:focus,
button:focus {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Screen reader only */
.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;
}