:root {
    --sapphire-dark: #0B1F3F;
    --sapphire-primary: #1E3A8A;
    --sapphire-medium: #2563EB;
    --sapphire-light: #3B82F6;
    --sapphire-lighter: #60A5FA;
    --sapphire-lightest: #DBEAFE;

    --blue-deep: #0C4A6E;
    --blue-ocean: #0369A1;
    --blue-sky: #0EA5E9;
    --blue-bright: #38BDF8;

    --gold-accent: #F59E0B;
    --gold-light: #FCD34D;

    --neutral-900: #111827;
    --neutral-800: #1F2937;
    --neutral-700: #374151;
    --neutral-600: #4B5563;
    --neutral-400: #9CA3AF;
    --neutral-300: #D1D5DB;
    --neutral-200: #E5E7EB;
    --neutral-100: #F3F4F6;
    --neutral-50: #F9FAFB;

    --white: #FFFFFF;
    --success: #10B981;
    --warning: #F59E0B;
    --error: #EF4444;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);

    --spacing-unit: 8px;

    --font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Playfair Display', Georgia, serif;

    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.5;
    color: var(--neutral-800);
    background: var(--neutral-50);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 calc(var(--spacing-unit) * 3);
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

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

.navbar {
    padding: calc(var(--spacing-unit) * 2) 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 1.5);
    text-decoration: none;
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--sapphire-dark);
    transition: transform var(--transition-fast);
}

.logo:hover {
    transform: scale(1.05);
}

.logo-icon {
    font-size: 2rem;
    filter: drop-shadow(0 2px 4px rgba(30, 58, 138, 0.3));
}

.logo-text {
    background: linear-gradient(135deg, var(--sapphire-primary), var(--blue-ocean));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: var(--sapphire-primary);
    border-radius: 3px;
    transition: all var(--transition-base);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: calc(var(--spacing-unit) * 4);
    align-items: center;
}

.nav-menu a {
    text-decoration: none;
    color: var(--neutral-700);
    font-weight: 500;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-menu a:not(.btn-nav):hover {
    color: var(--sapphire-primary);
}

.nav-menu a:not(.btn-nav)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--sapphire-primary);
    transition: width var(--transition-base);
}

.nav-menu a:not(.btn-nav):hover::after {
    width: 100%;
}

.btn-nav {
    padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 3);
    background: linear-gradient(135deg, var(--sapphire-primary), var(--blue-ocean));
    color: var(--white);
    border-radius: 50px;
    font-weight: 600;
    transition: all var(--transition-base);
}

.btn-nav:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
    padding-top: calc(var(--spacing-unit) * 10);
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, #0B1F3F 0%, #1E3A8A 50%, #0C4A6E 100%);
    z-index: -2;
}

.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 20% 50%, rgba(96, 165, 250, 0.2) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(14, 165, 233, 0.2) 0%, transparent 50%);
    animation: pulse 8s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.8; }
}

.hero-content {
    text-align: center;
    color: var(--white);
    position: relative;
    z-index: 1;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.title-line {
    display: block;
}

.gradient-text {
    background: linear-gradient(90deg, #60A5FA, #FCD34D, #38BDF8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    background-size: 200% auto;
    animation: shimmer 3s linear infinite;
}

@keyframes shimmer {
    to { background-position: 200% center; }
}

.hero-description {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    line-height: 1.8;
    max-width: 700px;
    margin: 0 auto calc(var(--spacing-unit) * 5);
    color: var(--sapphire-lightest);
}

.hero-cta {
    display: flex;
    gap: calc(var(--spacing-unit) * 2);
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: calc(var(--spacing-unit) * 8);
}

.btn-primary,
.btn-secondary {
    display: inline-block;
    padding: calc(var(--spacing-unit) * 2) calc(var(--spacing-unit) * 4);
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
    font-family: var(--font-primary);
    font-size: 1rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--gold-accent), var(--gold-light));
    color: var(--neutral-900);
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-xl);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.3);
    backdrop-filter: blur(10px);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
}

.btn-large {
    padding: calc(var(--spacing-unit) * 2.5) calc(var(--spacing-unit) * 5);
    font-size: 1.1rem;
}

.btn-small {
    padding: calc(var(--spacing-unit) * 1.5) calc(var(--spacing-unit) * 3);
    font-size: 0.9rem;
}

.hero-stats {
    display: flex;
    gap: calc(var(--spacing-unit) * 6);
    justify-content: center;
    flex-wrap: wrap;
}

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--gold-light), var(--gold-accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.stat-label {
    color: var(--sapphire-lightest);
    font-size: 0.95rem;
}

.games-section,
.benefits-section {
    padding: calc(var(--spacing-unit) * 12) 0;
}

.section-header {
    text-align: center;
    margin-bottom: calc(var(--spacing-unit) * 8);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    color: var(--sapphire-dark);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.section-description {
    font-size: 1.2rem;
    color: var(--neutral-600);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.8;
}

.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: calc(var(--spacing-unit) * 4);
}

.game-card {
    background: var(--white);
    border-radius: 24px;
    padding: calc(var(--spacing-unit) * 5);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.game-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 6px;
    background: linear-gradient(90deg, var(--sapphire-primary), var(--blue-sky));
    transform: scaleX(0);
    transition: transform var(--transition-base);
}

.game-card:hover::before {
    transform: scaleX(1);
}

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

.game-card.featured {
    background: linear-gradient(135deg, var(--sapphire-dark) 0%, var(--sapphire-primary) 100%);
    color: var(--white);
}

.game-card.featured .game-description {
    color: var(--sapphire-lightest);
}

.featured-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--gold-accent);
    color: var(--neutral-900);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

.game-icon {
    font-size: 4rem;
    margin-bottom: calc(var(--spacing-unit) * 3);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.1));
}

.game-title {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: calc(var(--spacing-unit) * 2);
    color: inherit;
}

.game-description {
    color: var(--neutral-600);
    line-height: 1.8;
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: calc(var(--spacing-unit) * 4);
}

.benefit-card {
    background: var(--white);
    padding: calc(var(--spacing-unit) * 4);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.benefit-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-5px);
}

.benefit-icon {
    font-size: 3rem;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.benefit-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--sapphire-dark);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.benefit-card p {
    color: var(--neutral-600);
    line-height: 1.8;
}

.cta-section {
    background: linear-gradient(135deg, var(--sapphire-primary), var(--blue-ocean));
    padding: calc(var(--spacing-unit) * 10) 0;
    text-align: center;
}

.cta-content h2 {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3rem);
    color: var(--white);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.cta-content p {
    font-size: 1.2rem;
    color: var(--sapphire-lightest);
    margin-bottom: calc(var(--spacing-unit) * 5);
}

.footer {
    background: var(--neutral-900);
    color: var(--neutral-300);
    padding: calc(var(--spacing-unit) * 8) 0 calc(var(--spacing-unit) * 4);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: calc(var(--spacing-unit) * 6);
    margin-bottom: calc(var(--spacing-unit) * 6);
}

.footer-column h4 {
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: calc(var(--spacing-unit) * 3);
}

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

.footer-column li {
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.footer-column a {
    color: var(--neutral-400);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-column a:hover {
    color: var(--blue-bright);
}

.footer-contact {
    margin-top: calc(var(--spacing-unit) * 1);
}

.footer-contact-item {
    margin-bottom: calc(var(--spacing-unit) * 3);
}

.footer-contact-item:last-child {
    margin-bottom: 0;
}

.contact-label {
    display: block;
    color: var(--neutral-400);
    font-size: 0.9rem;
    margin-bottom: calc(var(--spacing-unit) * 1);
}

.contact-value {
    display: block;
    color: var(--neutral-200);
    font-weight: 500;
    line-height: 1.6;
    user-select: text;
    cursor: text;
}

.footer-disclaimer {
    background: rgba(255, 255, 255, 0.05);
    padding: calc(var(--spacing-unit) * 4);
    border-radius: 16px;
    margin-bottom: calc(var(--spacing-unit) * 4);
}

.footer-disclaimer h4 {
    color: var(--gold-light);
    margin-bottom: calc(var(--spacing-unit) * 2);
    font-size: 1.2rem;
}

.footer-disclaimer p {
    margin-bottom: calc(var(--spacing-unit) * 2);
    line-height: 1.8;
}

.help-links {
    list-style: none;
    display: flex;
    gap: calc(var(--spacing-unit) * 3);
    flex-wrap: wrap;
}

.help-links a {
    color: var(--blue-bright);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.help-links a:hover {
    color: var(--blue-sky);
    text-decoration: underline;
}

.footer-bottom {
    text-align: center;
    padding-top: calc(var(--spacing-unit) * 4);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--neutral-500);
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    padding: calc(var(--spacing-unit) * 3);
}

.modal-overlay.hidden {
    display: none;
}

.modal-content {
    background: var(--white);
    border-radius: 24px;
    padding: calc(var(--spacing-unit) * 6);
    max-width: 500px;
    width: 100%;
    box-shadow: var(--shadow-2xl);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.age-modal {
    text-align: center;
}

.modal-icon {
    font-size: 4rem;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.modal-content h2 {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--sapphire-dark);
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.modal-content p {
    color: var(--neutral-600);
    line-height: 1.8;
    margin-bottom: calc(var(--spacing-unit) * 2);
}

.modal-disclaimer {
    background: var(--sapphire-lightest);
    padding: calc(var(--spacing-unit) * 2);
    border-radius: 12px;
    font-size: 0.9rem;
    color: var(--sapphire-dark);
}

.checkbox-container {
    display: flex;
    align-items: center;
    gap: calc(var(--spacing-unit) * 2);
    margin: calc(var(--spacing-unit) * 4) 0;
    text-align: left;
    padding: calc(var(--spacing-unit) * 2);
}

.age-checkbox {
    width: 24px;
    height: 24px;
    cursor: pointer;
}

.checkbox-container label {
    cursor: pointer;
    color: var(--neutral-700);
}

.modal-content button {
    width: 100%;
    margin-top: calc(var(--spacing-unit) * 2);
}

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--neutral-900);
    color: var(--white);
    padding: calc(var(--spacing-unit) * 3);
    z-index: 9999;
    box-shadow: var(--shadow-xl);
    transform: translateY(0);
    transition: transform var(--transition-base);
}

.cookie-banner.hidden {
    transform: translateY(100%);
}

.cookie-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: calc(var(--spacing-unit) * 4);
    flex-wrap: wrap;
}

.cookie-content p {
    flex: 1;
    margin: 0;
}

.cookie-content a {
    color: var(--blue-bright);
    text-decoration: underline;
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: calc(var(--spacing-unit) * 3);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: all var(--transition-base);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: all;
    }

    .hero-stats {
        gap: calc(var(--spacing-unit) * 4);
    }

    .stat-number {
        font-size: 2rem;
    }

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

    .cookie-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .hero-cta {
        flex-direction: column;
    }

    .btn-large {
        width: 100%;
    }
}