@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600;700&display=swap');

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

:root {
    --primary-color: #8B5CF6;
    --secondary-color: #EC4899;
    --dark-bg: #1F2937;
    --light-bg: #F9FAFB;
    --text-dark: #111827;
    --text-light: #6B7280;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background: var(--light-bg);
}

header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: white;
    text-decoration: none;
    font-size: 1.8rem;
    font-weight: 700;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-weight: 700;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    color: white;
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s;
}

nav a:hover {
    opacity: 0.8;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: white;
    transition: 0.3s;
}

@media (max-width: 768px) {
    nav ul {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
        flex-direction: column;
        padding: 1rem;
        gap: 0;
    }
    
    nav ul.active {
        display: flex;
    }
    
    nav ul li {
        padding: 0.8rem 0;
        border-bottom: 1px solid rgba(255,255,255,0.1);
    }
    
    .hamburger {
        display: flex;
    }
}

.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 4rem 1rem;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.hero p {
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 2rem;
    opacity: 0.95;
}

.cta-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: white;
    color: var(--primary-color);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: transform 0.3s, box-shadow 0.3s;
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 1rem;
}

.content-section {
    margin-bottom: 3rem;
}

.content-section h2 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.notice-box {
    background: #FEF3C7;
    border-left: 4px solid #F59E0B;
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 0 8px 8px 0;
}

.notice-box h3 {
    color: #92400E;
    margin-bottom: 0.5rem;
}

.notice-box ul {
    list-style: none;
    padding-left: 0;
}

.notice-box li {
    padding: 0.5rem 0;
    color: #78350F;
}

.notice-box li::before {
    content: "⚠️ ";
    margin-right: 0.5rem;
}

.game-container {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    margin: 2rem 0;
}

.game-container iframe {
    width: 100%;
    height: 600px;
    border: none;
    border-radius: 8px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

footer {
    background: var(--dark-bg);
    color: white;
    padding: 2rem 1rem;
    margin-top: 4rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 1.5rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: #93C5FD;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: white;
}

.age-popup {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.age-popup.hidden {
    display: none;
}

.age-popup-content {
    background: white;
    padding: 3rem;
    border-radius: 16px;
    text-align: center;
    max-width: 500px;
    margin: 1rem;
}

.age-popup-content h2 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 2rem;
}

.age-popup-content p {
    margin-bottom: 2rem;
    color: var(--text-light);
}

.age-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.age-button {
    padding: 1rem 2rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    font-size: 1rem;
    transition: transform 0.3s;
}

.age-button:hover {
    transform: scale(1.05);
}

.age-button.yes {
    background: var(--primary-color);
    color: white;
}

.age-button.no {
    background: #EF4444;
    color: white;
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .game-container iframe {
        height: 400px;
    }
}