/* CSS Variables */
:root {
    --primary: #6c5ce7;
    --primary-light: #a29bfe;
    --primary-dark: #5849be;
    --secondary: #fdcb6e;
    --accent-gold: #ffd700;
    --bingo-red: #e74c3c;
    --bingo-blue: #3498db;
    --bingo-green: #2ecc71;
    --bingo-yellow: #f39c12;
    --bg-dark: #0d0d1a;
    --bg-card: #151528;
    --bg-card-hover: #1e1e3a;
    --text-primary: #ffffff;
    --text-secondary: #c8c8e0;
    --text-muted: #8888a8;
    --border: #3a3a5a;
    --gradient-1: linear-gradient(135deg, #6c5ce7 0%, #a29bfe 50%, #fd79a8 100%);
    --gradient-2: linear-gradient(135deg, #ffd700 0%, #fdcb6e 100%);
    --gradient-gold: linear-gradient(135deg, #ffd700 0%, #f39c12 50%, #e74c3c 100%);
    --gradient-bingo: linear-gradient(135deg, #e74c3c 0%, #3498db 25%, #2ecc71 50%, #f39c12 75%, #9b59b6 100%);
    --gradient-bg: linear-gradient(180deg, #151530 0%, #0d0d1a 50%, #080812 100%);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 20px rgba(108, 92, 231, 0.3);
    --shadow-lg: 0 8px 40px rgba(108, 92, 231, 0.4);
    --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.3);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--gradient-bg);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(13, 13, 26, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 800;
}

.logo-img {
    width: 40px;
    height: 40px;
    object-fit: contain;
    filter: drop-shadow(0 2px 8px rgba(108, 92, 231, 0.4));
}

.logo-text {
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
}

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

.btn-nav {
    background: var(--gradient-1);
    color: white !important;
    padding: 0.6rem 1.25rem;
    border-radius: var(--radius-md);
    font-weight: 600;
}

.btn-nav:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(108, 92, 231, 0.5), 0 0 20px rgba(253, 203, 110, 0.3);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 4rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 8rem 1.5rem 4rem;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.hero-badge {
    display: inline-block;
    background: rgba(231, 76, 60, 0.15);
    color: var(--bingo-red);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    border: 1px solid rgba(231, 76, 60, 0.3);
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    background: linear-gradient(135deg, #ffffff 0%, #a5b4fc 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--gradient-1);
    color: white;
    padding: 1rem 2rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(108, 92, 231, 0.5), 0 0 30px rgba(253, 203, 110, 0.3);
}

.btn-large {
    padding: 1.25rem 2.5rem;
    font-size: 1.125rem;
}

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

.hero-stats {
    display: flex;
    gap: 3rem;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text-primary);
}

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

/* Hero Visual - Phone Mockup */
.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.phone-mockup {
    width: 280px;
    height: 560px;
    background: linear-gradient(145deg, #2d2d50 0%, #1a1a35 50%, #12121f 100%);
    border-radius: 40px;
    padding: 12px;
    box-shadow: var(--shadow-lg), 0 0 60px rgba(231, 76, 60, 0.3), 0 0 100px rgba(52, 152, 219, 0.2);
    border: 2px solid var(--border);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.phone-screen {
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, #1a1a40 0%, #0d0d1a 50%, #080812 100%);
    border-radius: 32px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.game-preview {
    position: relative;
    width: 100%;
    height: 100%;
}

.bingo-card {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: linear-gradient(145deg, #1a1a35 0%, #12121f 100%);
    border-radius: var(--radius-lg);
    padding: 1rem;
    box-shadow: var(--shadow-lg), 0 0 30px rgba(231, 76, 60, 0.3);
    border: 2px solid var(--border);
    animation: cardShake 8s ease-in-out infinite;
}

@keyframes cardShake {
    0%, 100% { transform: translate(-50%, -50%) rotate(-1deg); }
    25% { transform: translate(-50%, -50%) rotate(1deg); }
    50% { transform: translate(-50%, -50%) rotate(-1deg); }
    75% { transform: translate(-50%, -50%) rotate(1deg); }
}

.bingo-header {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 6px;
    margin-bottom: 6px;
}

.bingo-header span {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
    font-weight: 800;
    font-size: 1rem;
    padding: 0.5rem 0;
    text-align: center;
    border-radius: 6px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.bingo-header span:nth-child(2) {
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
}

.bingo-header span:nth-child(3) {
    background: linear-gradient(135deg, #2ecc71 0%, #27ae60 100%);
}

.bingo-header span:nth-child(4) {
    background: linear-gradient(135deg, #f39c12 0%, #e67e22 100%);
}

.bingo-header span:nth-child(5) {
    background: linear-gradient(135deg, #9b59b6 0%, #8e44ad 100%);
}

.bingo-row {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 6px;
    margin-bottom: 6px;
}

.bingo-row:last-child {
    margin-bottom: 0;
}

.bingo-row span {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.85rem;
    padding: 0.4rem 0;
    text-align: center;
    border-radius: 6px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
}

.bingo-row span.marked {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
    animation: markPulse 1.5s ease-in-out infinite;
    box-shadow: 0 0 10px rgba(231, 76, 60, 0.5);
}

.bingo-row span.free {
    background: linear-gradient(135deg, #f39c12 0%, #e67e22 100%);
    color: white;
    font-size: 0.7rem;
    font-weight: 700;
    animation: freePulse 2s ease-in-out infinite;
}

.win-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    pointer-events: none;
    opacity: 0;
    animation: winFade 4s ease-in-out infinite;
}

@keyframes winFade {
    0%, 100% { opacity: 0; }
    50% { opacity: 1; }
}

.win-text {
    font-size: 3rem;
    font-weight: 900;
    background: var(--gradient-gold);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 30px rgba(255, 215, 0, 0.5);
    animation: winBounce 0.5s ease-out;
}

@keyframes winBounce {
    0% { transform: scale(0); opacity: 0; }
    50% { transform: scale(1.2); }
    100% { transform: scale(1); opacity: 1; }
}

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

@keyframes freePulse {
    0%, 100% { box-shadow: 0 0 10px rgba(243, 156, 18, 0.5); }
    50% { box-shadow: 0 0 20px rgba(243, 156, 18, 0.8); }
}

/* Section Styles */
.section-header {
    text-align: center;
    max-width: 600px;
    margin: 0 auto 4rem;
}

.section-badge {
    display: inline-block;
    background: rgba(245, 158, 11, 0.15);
    color: var(--secondary);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
    border: 1px solid rgba(245, 158, 11, 0.3);
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1.125rem;
}

/* Features Section */
.features {
    padding: 6rem 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: all 0.3s ease;
}

.feature-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg), 0 0 30px rgba(253, 203, 110, 0.2);
    border-color: var(--primary);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: var(--gradient-1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: white;
    box-shadow: var(--shadow-md);
}

.feature-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.feature-desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* How to Play Section */
.how-to-play {
    padding: 6rem 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
    background: linear-gradient(135deg, rgba(108, 92, 231, 0.1) 0%, rgba(30, 30, 58, 0.8) 50%, rgba(21, 21, 40, 0.9) 100%);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    margin-bottom: 6rem;
}

.steps-container {
    display: flex;
    gap: 3rem;
    justify-content: center;
}

.step {
    flex: 1;
    max-width: 350px;
    text-align: center;
    padding: 2rem;
}

.step-number {
    font-size: 4rem;
    font-weight: 800;
    background: var(--gradient-2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    opacity: 0.4;
    margin-bottom: 1rem;
}

.step-content h3 {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

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

/* Download Section */
.download-section {
    padding: 6rem 1.5rem;
    background: var(--gradient-bingo);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.download-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
    padding: 3rem;
    background: rgba(13, 13, 26, 0.9);
    border-radius: var(--radius-xl);
    backdrop-filter: blur(10px);
}

.download-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.download-content p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

.download-requirements {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1.5rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Footer */
.footer {
    padding: 4rem 1.5rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.footer-brand p {
    color: var(--text-secondary);
    margin-top: 0.5rem;
    font-size: 0.95rem;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-secondary);
    font-weight: 500;
}

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

.footer-bottom {
    padding-top: 2rem;
    text-align: center;
}

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

/* Responsive Design */
@media (max-width: 992px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 6rem;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-title {
        font-size: 3rem;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

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

    .steps-container {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: linear-gradient(180deg, rgba(21, 21, 40, 0.98) 0%, rgba(13, 13, 26, 0.98) 100%);
        flex-direction: column;
        padding: 1.5rem;
        gap: 1rem;
        border-bottom: 1px solid var(--border);
    }

    .nav-links.active {
        display: flex;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.1rem;
    }

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

    .footer-content {
        flex-direction: column;
        gap: 2rem;
        text-align: center;
    }

    .section-title {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 5rem 1rem 3rem;
    }

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

    .hero-stats {
        gap: 2rem;
    }

    .stat-number {
        font-size: 1.5rem;
    }

    .phone-mockup {
        width: 220px;
        height: 440px;
    }

    .card {
        width: 45px;
        height: 63px;
    }
}