/* ================================================
   BetMGM Brasil - Design System
   Style: Luxury Gold Casino (豪华金色赌场)
   Primary: #D4AF37 (Gold)
   Secondary: #FFD700 (Bright Gold)
   Accent: #0A0A0A (Deep Black)
   Background: #0A0A0A
   Text: #FFFFFF
   ================================================ */

/* ========== CSS Variables ========== */
:root {
    /* Primary Colors */
    --primary: #D4AF37;
    --primary-light: #E5C158;
    --primary-dark: #B8972E;
    --secondary: #FFD700;
    --accent: #0A0A0A;

    /* Background Colors */
    --bg-primary: #0A0A0A;
    --bg-secondary: #141414;
    --bg-tertiary: #1A1A1A;
    --bg-card: #1E1E1E;
    --bg-hover: #252525;

    /* Text Colors */
    --text-primary: #FFFFFF;
    --text-secondary: #B0B0B0;
    --text-muted: #808080;
    --text-accent: #D4AF37;

    /* Status Colors */
    --success: #28A745;
    --warning: #FFC107;
    --danger: #DC3545;
    --info: #17A2B8;

    /* Border Colors */
    --border-light: rgba(212, 175, 55, 0.2);
    --border-medium: rgba(212, 175, 55, 0.4);
    --border-strong: #D4AF37;

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-gold: 0 0 20px rgba(212, 175, 55, 0.3);

    /* Gradients */
    --gradient-gold: linear-gradient(135deg, #D4AF37 0%, #FFD700 50%, #D4AF37 100%);
    --gradient-dark: linear-gradient(180deg, #141414 0%, #0A0A0A 100%);
    --gradient-hero: linear-gradient(135deg, rgba(10, 10, 10, 0.95) 0%, rgba(20, 20, 20, 0.9) 100%);

    /* Typography */
    --font-primary: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Playfair Display', Georgia, serif;

    /* Spacing - 8px Grid System */
    --spacing-xs: 4px;      /* 0.25rem = 4px */
    --spacing-sm: 8px;      /* 0.5rem = 8px */
    --spacing-md: 16px;     /* 1rem = 16px */
    --spacing-lg: 24px;     /* 1.5rem = 24px */
    --spacing-xl: 32px;     /* 2rem = 32px */
    --spacing-2xl: 48px;    /* 3rem = 48px */
    --spacing-3xl: 64px;    /* 4rem = 64px */
    --spacing-4xl: 80px;    /* 5rem = 80px */

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Container */
    --container-max: 1200px;
    --container-padding: 1rem;
}

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

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

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul, ol {
    list-style: none;
}

/* ========== Typography ========== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 2.5rem;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h2 {
    font-size: 2rem;
    color: var(--primary);
}

h3 {
    font-size: 1.5rem;
}

h4 {
    font-size: 1.25rem;
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* ========== Container ========== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

/* ========== Header ========== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-light);
    transition: all var(--transition-normal);
}

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

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
    padding: 0 var(--spacing-lg);
    max-width: var(--container-max);
    margin: 0 auto;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo img {
    height: 52px;
    width: auto;
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation */
.nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-list {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-secondary);
    padding: var(--spacing-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
}

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

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

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

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-sm);
    background: none;
    border: none;
    cursor: pointer;
}

.menu-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--primary);
    transition: all var(--transition-fast);
}

/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    font-family: var(--font-primary);
    font-size: 0.95rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-normal);
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(212, 175, 55, 0.5);
    color: var(--bg-primary);
}

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

.btn-secondary:hover {
    background: var(--primary);
    color: var(--bg-primary);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* ========== Hero Section ========== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(10, 10, 10, 0.92) 0%, rgba(10, 10, 10, 0.85) 50%, rgba(20, 20, 20, 0.80) 100%);
}

.hero-content {
    max-width: 650px;
}

.hero-badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(212, 175, 55, 0.15);
    border: 1px solid var(--border-medium);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    color: var(--primary);
    margin-bottom: var(--spacing-lg);
}

.hero-title {
    font-size: 3rem;
    margin-bottom: var(--spacing-lg);
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xl);
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

/* ========== Sections ========== */
.section {
    padding: var(--spacing-4xl) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-2xl);
}

.section-label {
    display: inline-block;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-sm);
}

.section-title {
    font-size: 2.25rem;
    margin-bottom: var(--spacing-md);
}

.section-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

/* ========== Cards ========== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.card:hover {
    border-color: var(--border-medium);
    box-shadow: var(--shadow-gold);
    transform: translateY(-4px);
}

.card-image {
    position: relative;
    aspect-ratio: 16/9;
    overflow: hidden;
}

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

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

.card-body {
    padding: var(--spacing-xl);
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.card-text {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

/* ========== Feature Cards ========== */
.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-2xl);
    text-align: center;
    transition: all var(--transition-normal);
}

.feature-card:hover {
    border-color: var(--primary);
    box-shadow: var(--shadow-gold);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(212, 175, 55, 0.1);
    border-radius: var(--radius-lg);
}

.feature-icon img {
    width: 36px;
    height: 36px;
}

.feature-title {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
}

.feature-text {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ========== Grid Layouts ========== */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

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

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

/* ========== Tables ========== */
.table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-light);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
}

th, td {
    padding: var(--spacing-md) var(--spacing-lg);
    text-align: left;
    border-bottom: 1px solid var(--border-light);
}

th {
    background: var(--bg-tertiary);
    font-weight: 600;
    color: var(--primary);
}

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

tr:hover td {
    background: var(--bg-hover);
}

/* ========== Info Box ========== */
.info-box {
    background: var(--bg-card);
    border-left: 4px solid var(--primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
}

.info-box-title {
    font-size: 1.1rem;
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

.info-box-content {
    color: var(--text-secondary);
}

/* ========== Rating Stars ========== */
.rating {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.rating-star {
    color: var(--primary);
    font-size: 1.25rem;
}

.rating-text {
    margin-left: var(--spacing-sm);
    font-weight: 600;
}

/* ========== Pros & Cons ========== */
.pros-cons {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.pros, .cons {
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
}

.pros {
    background: rgba(40, 167, 69, 0.1);
    border: 1px solid rgba(40, 167, 69, 0.3);
}

.cons {
    background: rgba(220, 53, 69, 0.1);
    border: 1px solid rgba(220, 53, 69, 0.3);
}

.pros-title, .cons-title {
    font-size: 1.1rem;
    margin-bottom: var(--spacing-md);
}

.pros-title {
    color: var(--success);
}

.cons-title {
    color: var(--danger);
}

.pros-list li, .cons-list li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    color: var(--text-secondary);
}

.pros-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: bold;
}

.cons-list li::before {
    content: '✗';
    position: absolute;
    left: 0;
    color: var(--danger);
    font-weight: bold;
}

/* ========== FAQ Accordion ========== */
.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1rem;
    font-weight: 600;
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.faq-question:hover {
    color: var(--primary);
}

.faq-icon {
    font-size: 1.5rem;
    color: var(--primary);
    transition: transform var(--transition-fast);
}

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

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
}

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

.faq-answer-content {
    padding: 0 var(--spacing-lg) var(--spacing-lg);
    color: var(--text-secondary);
}

/* ========== Steps ========== */
.steps {
    counter-reset: step;
}

.step-item {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg) 0;
    border-bottom: 1px solid var(--border-light);
}

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

.step-number {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-gold);
    color: var(--bg-primary);
    font-weight: 700;
    font-size: 1.25rem;
    border-radius: var(--radius-full);
}

.step-content h4 {
    margin-bottom: var(--spacing-sm);
}

.step-content p {
    margin-bottom: 0;
}

/* ========== CTA Banner ========== */
.cta-banner {
    background: var(--gradient-gold);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    text-align: center;
}

.cta-banner h3 {
    color: var(--bg-primary);
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
}

.cta-banner p {
    color: rgba(10, 10, 10, 0.8);
    font-size: 1.1rem;
    margin-bottom: var(--spacing-lg);
}

.cta-banner .btn {
    background: var(--bg-primary);
    color: var(--primary);
}

.cta-banner .btn:hover {
    background: var(--bg-secondary);
}

/* ========== Footer ========== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-light);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
}

.footer-brand p {
    color: var(--text-secondary);
    margin-top: var(--spacing-md);
    font-size: 0.95rem;
}

.footer-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--primary);
    margin-bottom: var(--spacing-lg);
}

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

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.95rem;
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-legal {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.footer-legal img {
    height: 32px;
}

.footer-copyright {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.footer-disclaimer {
    background: rgba(220, 53, 69, 0.1);
    border: 1px solid rgba(220, 53, 69, 0.3);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    text-align: center;
}

.footer-disclaimer p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin: 0;
}

/* ========== Responsive ========== */
@media (max-width: 1024px) {
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: 1rem;
    }

    h1, .hero-title {
        font-size: 2rem;
    }

    h2, .section-title {
        font-size: 1.75rem;
    }

    /* Mobile Navigation */
    .menu-toggle {
        display: flex;
    }

    .nav {
        position: fixed;
        top: 70px;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        padding: var(--spacing-lg);
        flex-direction: column;
        gap: var(--spacing-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }

    .nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-list {
        flex-direction: column;
        width: 100%;
    }

    .nav-link {
        display: block;
        padding: var(--spacing-md);
        text-align: center;
    }

    /* Hero */
    .hero {
        padding: 100px 0 60px;
        min-height: auto;
    }

    .hero-cta {
        flex-direction: column;
    }

    .hero-cta .btn {
        width: 100%;
    }

    /* Grids */
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }

    .pros-cons {
        grid-template-columns: 1fr;
    }

    /* Footer */
    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    h1, .hero-title {
        font-size: 1.75rem;
    }

    .section {
        padding: var(--spacing-2xl) 0;
    }

    .btn {
        min-height: 48px;
        padding: 12px 20px;
    }

    .btn-lg {
        padding: 14px 24px;
        font-size: 1rem;
        min-height: 52px;
    }

    /* Ensure touch targets are at least 48x48px */
    .nav-link {
        min-height: 48px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .faq-question {
        min-height: 56px;
    }
}

/* ========== Utility Classes ========== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-accent { color: var(--primary); }

.bg-dark { background-color: var(--bg-primary); }
.bg-card { background-color: var(--bg-card); }

.mt-1 { margin-top: var(--spacing-md); }
.mt-2 { margin-top: var(--spacing-lg); }
.mt-3 { margin-top: var(--spacing-xl); }
.mb-1 { margin-bottom: var(--spacing-md); }
.mb-2 { margin-bottom: var(--spacing-lg); }
.mb-3 { margin-bottom: var(--spacing-xl); }

.py-1 { padding-top: var(--spacing-md); padding-bottom: var(--spacing-md); }
.py-2 { padding-top: var(--spacing-lg); padding-bottom: var(--spacing-lg); }
.py-3 { padding-top: var(--spacing-xl); padding-bottom: var(--spacing-xl); }

.hidden { display: none; }
.visible { display: block; }

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

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

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

.animate-fadeIn {
    animation: fadeIn 0.6s ease forwards;
}

.animate-pulse {
    animation: pulse 2s infinite;
}

/* Gold shimmer effect for special elements */
.shimmer {
    background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 50%, var(--primary) 100%);
    background-size: 200% 100%;
    animation: shimmer 2s infinite;
}