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

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

body {
    font-family: 'Poppins', sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #ffffff;
}

header {
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(10px);
    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: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.8rem;
    font-weight: 700;
    color: #ffffff;
    text-decoration: none;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.logo-icon {
    width: 45px;
    height: 45px;
    background: linear-gradient(135deg, #ffd89b 0%, #19547b 100%);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

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

nav a {
    color: #ffffff;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    padding: 0.5rem 1rem;
    border-radius: 8px;
}

nav a:hover {
    background: rgba(255, 255, 255, 0.15);
    transform: translateY(-2px);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 10px;
}

.hamburger span {
    width: 28px;
    height: 3px;
    background: #ffffff;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.main-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.hero-section {
    text-align: center;
    padding: 4rem 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    margin-bottom: 3rem;
    backdrop-filter: blur(10px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.hero-section h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    text-shadow: 3px 3px 6px rgba(0, 0, 0, 0.3);
    background: linear-gradient(90deg, #ffd89b 0%, #fff 50%, #ffd89b 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-section p {
    font-size: 1.3rem;
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto 2rem;
    opacity: 0.95;
}

.notice-box {
    background: rgba(255, 193, 7, 0.2);
    border: 2px solid #ffc107;
    border-radius: 15px;
    padding: 2rem;
    margin: 2rem 0;
}

.notice-box h2 {
    color: #ffc107;
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

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

.notice-box li {
    padding: 0.75rem 0;
    padding-left: 2rem;
    position: relative;
    font-size: 1.1rem;
}

.notice-box li:before {
    content: "⚠️";
    position: absolute;
    left: 0;
}

.game-container {
    background: rgba(0, 0, 0, 0.3);
    border-radius: 20px;
    padding: 2rem;
    margin: 3rem 0;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.game-container h2 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2.5rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.game-frame {
    width: 100%;
    height: 700px;
    border: none;
    border-radius: 15px;
    background: #000;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.feature-card {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 15px;
    padding: 2rem;
    backdrop-filter: blur(10px);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.feature-card h3 {
    font-size: 1.6rem;
    margin-bottom: 1rem;
    color: #ffd89b;
}

.feature-card p {
    line-height: 1.7;
    opacity: 0.9;
}

footer {
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(10px);
    padding: 3rem 2rem;
    margin-top: 4rem;
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    text-align: center;
}

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

.footer-links a {
    color: #ffd89b;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    color: #ffffff;
    transform: scale(1.05);
}

.age-modal {
    display: flex;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    backdrop-filter: blur(10px);
    z-index: 10000;
    justify-content: center;
    align-items: center;
}

.age-modal-content {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 3rem;
    border-radius: 20px;
    text-align: center;
    max-width: 500px;
    box-shadow: 0 10px 50px rgba(0, 0, 0, 0.5);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.age-modal-content h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: #ffd89b;
}

.age-modal-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    line-height: 1.6;
}

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

.age-btn {
    padding: 1rem 3rem;
    font-size: 1.1rem;
    font-weight: 600;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: 'Poppins', sans-serif;
}

.age-btn.yes {
    background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
    color: #ffffff;
}

.age-btn.yes:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(56, 239, 125, 0.4);
}

.age-btn.no {
    background: linear-gradient(135deg, #eb3349 0%, #f45c43 100%);
    color: #ffffff;
}

.age-btn.no:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(244, 92, 67, 0.4);
}

.content-section {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 3rem;
    margin: 2rem 0;
    backdrop-filter: blur(10px);
    line-height: 1.8;
}

.content-section h1 {
    font-size: 3rem;
    margin-bottom: 2rem;
    color: #ffd89b;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.content-section h2 {
    font-size: 2rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: #ffd89b;
}

.content-section p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    opacity: 0.95;
}

.content-section ul,
.content-section ol {
    margin-left: 2rem;
    margin-bottom: 1.5rem;
}

.content-section li {
    margin-bottom: 0.75rem;
    font-size: 1.05rem;
}

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

    nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background: rgba(0, 0, 0, 0.95);
        backdrop-filter: blur(20px);
        transition: right 0.3s ease;
        padding: 5rem 2rem;
    }

    nav.active {
        right: 0;
    }

    nav ul {
        flex-direction: column;
        gap: 1rem;
    }

    nav a {
        display: block;
        padding: 1rem;
        font-size: 1.2rem;
    }

    .hero-section h1 {
        font-size: 2.2rem;
    }

    .hero-section p {
        font-size: 1.1rem;
    }

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

    .game-frame {
        height: 500px;
    }

    .age-modal-content {
        margin: 1rem;
        padding: 2rem;
    }

    .age-modal-content h2 {
        font-size: 2rem;
    }

    .age-buttons {
        flex-direction: column;
    }

    .age-btn {
        width: 100%;
    }

    .content-section {
        padding: 2rem;
    }

    .content-section h1 {
        font-size: 2rem;
    }

    .content-section h2 {
        font-size: 1.5rem;
    }
}