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

:root {
    --primary-blue: #1e40af;
    --dark-blue: #0f172a;
    --light-blue: #3b82f6;
    --accent-blue: #60a5fa;
    --white: #ffffff;
    --light-gray: #f8fafc;
    --medium-gray: #e2e8f0;
    --text-dark: #1e293b;
    --text-light: #64748b;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.age-banner {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
    color: var(--white);
    text-align: center;
    padding: 8px 0;
    font-weight: 600;
    font-size: 14px;
    position: sticky;
    top: 0;
    z-index: 1000;
}

header {
    background-color: var(--dark-blue);
    padding: 16px 0;
    position: sticky;
    top: 26px;
    z-index: 999;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    color: var(--white);
    font-size: 20px;
    font-weight: 700;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 3px;
    background-color: var(--white);
    transition: all 0.3s;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
    align-items: center;
}

.nav-links a {
    color: var(--white);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--accent-blue);
}

.nav-links a.active {
    color: var(--accent-blue);
    border-bottom: 2px solid var(--accent-blue);
    padding-bottom: 4px;
}

.btn-login {
    background-color: var(--light-blue);
    padding: 10px 24px;
    border-radius: 6px;
    font-weight: 600;
}

.btn-login:hover {
    background-color: var(--accent-blue);
    color: var(--white);
}

.hero {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
    color: var(--white);
    padding: 120px 0 80px;
    text-align: center;
}

.hero h1 {
    font-size: 48px;
    font-weight: 800;
    margin-bottom: 24px;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 20px;
    margin-bottom: 32px;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.5;
}

.hero-disclaimer {
    margin-top: 24px;
    font-size: 14px;
    opacity: 0.9;
}

.btn-primary {
    background-color: var(--white);
    color: var(--primary-blue);
    border: none;
    padding: 16px 48px;
    font-size: 18px;
    font-weight: 700;
    border-radius: 8px;
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.btn-secondary {
    background-color: var(--light-blue);
    color: var(--white);
    border: none;
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.3s;
}

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

.btn-outline {
    background-color: transparent;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
    padding: 14px 32px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-outline:hover {
    background-color: var(--primary-blue);
    color: var(--white);
}

.featured-game {
    padding: 80px 0;
    background-color: var(--light-gray);
}

.featured-game h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 48px;
    color: var(--dark-blue);
}

.game-card {
    background-color: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

.game-preview {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    padding: 48px;
    align-items: center;
}

.game-thumbnail {
    display: flex;
    justify-content: center;
    align-items: center;
}

.game-info h3 {
    font-size: 28px;
    margin-bottom: 16px;
    color: var(--dark-blue);
}

.game-info p {
    font-size: 16px;
    line-height: 1.5;
    margin-bottom: 24px;
    color: var(--text-light);
}

.about-preview {
    padding: 80px 0;
    text-align: center;
}

.about-preview h2 {
    font-size: 36px;
    margin-bottom: 24px;
    color: var(--dark-blue);
}

.about-preview p {
    font-size: 18px;
    line-height: 1.5;
    max-width: 800px;
    margin: 0 auto 24px;
    color: var(--text-light);
}

.testimonials {
    padding: 80px 0;
    background-color: var(--light-gray);
}

.testimonials h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 48px;
    color: var(--dark-blue);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.testimonial-card {
    background-color: var(--white);
    padding: 32px;
    border-radius: 12px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}

.stars {
    color: #fbbf24;
    font-size: 20px;
    margin-bottom: 16px;
}

.testimonial-card p {
    font-size: 16px;
    line-height: 1.5;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.author {
    font-style: italic;
    color: var(--text-light);
    font-size: 14px;
}

.cta-banner {
    background: linear-gradient(135deg, var(--light-blue) 0%, var(--primary-blue) 100%);
    color: var(--white);
    padding: 80px 0;
    text-align: center;
}

.cta-banner h2 {
    font-size: 36px;
    margin-bottom: 16px;
}

.cta-banner p {
    font-size: 18px;
    margin-bottom: 32px;
}

.disclaimer-section {
    padding: 80px 0;
    background-color: var(--white);
}

.disclaimer-content {
    background-color: var(--light-gray);
    padding: 40px;
    border-radius: 12px;
    margin-bottom: 48px;
}

.disclaimer-content h3 {
    font-size: 28px;
    margin-bottom: 24px;
    color: var(--dark-blue);
}

.disclaimer-content p {
    font-size: 16px;
    line-height: 1.5;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.support-organizations h4 {
    font-size: 24px;
    text-align: center;
    margin-bottom: 32px;
    color: var(--dark-blue);
}

.org-logos {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
}

.org-item {
    text-align: center;
    padding: 24px;
    background-color: var(--light-gray);
    border-radius: 12px;
}

.org-logo {
    margin-bottom: 16px;
    display: flex;
    justify-content: center;
}

.org-item p {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--dark-blue);
}

.org-item a {
    color: var(--light-blue);
    text-decoration: none;
    font-size: 14px;
}

.org-item a:hover {
    text-decoration: underline;
}

footer {
    background-color: var(--dark-blue);
    color: var(--white);
    padding: 64px 0 24px;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 48px;
    margin-bottom: 48px;
}

.footer-section h4 {
    font-size: 18px;
    margin-bottom: 16px;
    color: var(--white);
}

.footer-section p {
    font-size: 14px;
    line-height: 1.5;
    color: var(--medium-gray);
}

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

.footer-section ul li {
    margin-bottom: 8px;
}

.footer-section ul li a {
    color: var(--medium-gray);
    text-decoration: none;
    font-size: 14px;
    transition: color 0.3s;
}

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

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: var(--medium-gray);
    margin-bottom: 8px;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background-color: var(--white);
    padding: 48px;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--dark-blue);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--medium-gray);
    border-radius: 6px;
    font-size: 16px;
    font-family: inherit;
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.checkbox-group {
    display: flex;
    align-items: start;
    gap: 12px;
    margin-bottom: 16px;
}

.checkbox-group input[type="checkbox"] {
    margin-top: 4px;
    width: 18px;
    height: 18px;
}

.checkbox-group label {
    font-size: 14px;
    color: var(--text-dark);
}

.page-hero {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--dark-blue) 100%);
    color: var(--white);
    padding: 80px 0;
    text-align: center;
}

.page-hero h1 {
    font-size: 42px;
    font-weight: 800;
    margin-bottom: 16px;
}

.page-hero p {
    font-size: 18px;
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.5;
}

.content-section {
    padding: 80px 0;
}

.content-section h2 {
    font-size: 32px;
    margin-bottom: 24px;
    color: var(--dark-blue);
}

.content-section h3 {
    font-size: 24px;
    margin-bottom: 16px;
    margin-top: 32px;
    color: var(--primary-blue);
}

.content-section p {
    font-size: 16px;
    line-height: 1.5;
    margin-bottom: 16px;
    color: var(--text-dark);
}

.content-section ul {
    margin-bottom: 24px;
    padding-left: 24px;
}

.content-section ul li {
    font-size: 16px;
    line-height: 1.5;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    margin-top: 32px;
}

.resource-card {
    background-color: var(--light-gray);
    padding: 24px;
    border-radius: 12px;
    border-left: 4px solid var(--light-blue);
}

.resource-card h4 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--dark-blue);
}

.resource-card p {
    font-size: 14px;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.resource-card a {
    color: var(--light-blue);
    text-decoration: none;
    font-weight: 600;
}

.resource-card a:hover {
    text-decoration: underline;
}

.game-container {
    padding: 40px 0;
    min-height: calc(100vh - 400px);
}

.game-disclaimer {
    background-color: #fef3c7;
    border-left: 4px solid #f59e0b;
    padding: 24px;
    margin-bottom: 32px;
    border-radius: 8px;
}

.game-disclaimer h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--dark-blue);
}

.game-disclaimer p {
    font-size: 14px;
    margin-bottom: 8px;
    color: var(--text-dark);
}

.game-frame {
    width: 100%;
    height: 700px;
    border: none;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    animation: fadeIn 0.3s;
}

.modal-content {
    background-color: var(--white);
    margin: 15% auto;
    padding: 40px;
    border-radius: 12px;
    max-width: 500px;
    text-align: center;
    animation: slideDown 0.3s;
}

.modal-content h3 {
    font-size: 24px;
    margin-bottom: 16px;
    color: var(--dark-blue);
}

.modal-content p {
    font-size: 16px;
    margin-bottom: 24px;
    color: var(--text-dark);
}

.close-modal {
    background-color: var(--light-blue);
    color: var(--white);
    border: none;
    padding: 12px 32px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
}

.close-modal:hover {
    background-color: var(--primary-blue);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideDown {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

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

    .nav-links {
        position: fixed;
        top: 98px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 98px);
        background-color: var(--dark-blue);
        flex-direction: column;
        align-items: center;
        justify-content: start;
        padding-top: 40px;
        transition: left 0.3s;
    }

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

    .hero h1 {
        font-size: 32px;
    }

    .hero-subtitle {
        font-size: 16px;
    }

    .game-preview {
        grid-template-columns: 1fr;
        gap: 24px;
        padding: 24px;
    }

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

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .game-frame {
        height: 500px;
    }

    .contact-form {
        padding: 24px;
    }
}