@import url('https://fonts.googleapis.com/css2?family=Exo+2:wght@300;400;600;700&display=swap');

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

body {
    font-family: 'Exo 2', sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    color: #e0e0e0;
    min-height: 100vh;
    line-height: 1.6;
}

header {
    background: rgba(26, 26, 46, 0.95);
    padding: 1rem 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-svg {
    width: 50px;
    height: 50px;
}

.logo-text {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(45deg, #00d4ff, #7b2cbf);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

nav a {
    color: #e0e0e0;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #00d4ff, #7b2cbf);
    transition: width 0.3s ease;
}

nav a:hover::after {
    width: 100%;
}

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

.hamburger span {
    width: 28px;
    height: 3px;
    background: #00d4ff;
    border-radius: 3px;
    transition: all 0.3s ease;
}

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

.hero {
    text-align: center;
    padding: 3rem 0;
    margin-bottom: 3rem;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: linear-gradient(45deg, #00d4ff, #7b2cbf, #ff006e);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.2rem;
    color: #b0b0b0;
    max-width: 800px;
    margin: 0 auto;
}

.notice-banner {
    background: linear-gradient(135deg, rgba(123, 44, 191, 0.2), rgba(0, 212, 255, 0.2));
    border: 2px solid #00d4ff;
    border-radius: 15px;
    padding: 2rem;
    margin-bottom: 3rem;
    box-shadow: 0 8px 32px rgba(0, 212, 255, 0.2);
}

.notice-banner h2 {
    color: #00d4ff;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.notice-item {
    background: rgba(255, 255, 255, 0.05);
    padding: 1rem;
    margin: 0.8rem 0;
    border-left: 4px solid #7b2cbf;
    border-radius: 8px;
}

.game-container {
    background: rgba(26, 26, 46, 0.6);
    padding: 2rem;
    border-radius: 15px;
    margin: 3rem 0;
    text-align: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.game-container h2 {
    color: #00d4ff;
    margin-bottom: 1.5rem;
    font-size: 2rem;
}

.game-frame {
    width: 100%;
    max-width: 750px;
    height: 600px;
    border: none;
    border-radius: 10px;
    margin: 0 auto;
    display: block;
    box-shadow: 0 10px 40px rgba(0, 212, 255, 0.3);
}

.content-section {
    background: rgba(26, 26, 46, 0.6);
    padding: 2.5rem;
    border-radius: 15px;
    margin: 2rem 0;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.content-section h2 {
    color: #00d4ff;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
}

.content-section h3 {
    color: #7b2cbf;
    margin: 1.5rem 0 1rem;
}

.content-section p, .content-section ul {
    margin-bottom: 1rem;
    line-height: 1.8;
}

.content-section ul {
    padding-left: 2rem;
}

footer {
    background: rgba(26, 26, 46, 0.95);
    padding: 2rem;
    margin-top: 4rem;
    text-align: center;
    border-top: 2px solid #00d4ff;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: #00d4ff;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-links a:hover {
    color: #7b2cbf;
}

.age-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 10000;
    align-items: center;
    justify-content: center;
}

.age-modal.active {
    display: flex;
}

.age-modal-content {
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    padding: 3rem;
    border-radius: 20px;
    text-align: center;
    max-width: 500px;
    border: 2px solid #00d4ff;
    box-shadow: 0 10px 50px rgba(0, 212, 255, 0.3);
}

.age-modal-content h2 {
    color: #00d4ff;
    margin-bottom: 1.5rem;
    font-size: 2rem;
}

.age-modal-content p {
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

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

.age-btn {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
    border: none;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    font-family: 'Exo 2', sans-serif;
}

.age-btn.yes {
    background: linear-gradient(135deg, #00d4ff, #7b2cbf);
    color: white;
}

.age-btn.yes:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 212, 255, 0.5);
}

.age-btn.no {
    background: rgba(255, 0, 0, 0.7);
    color: white;
}

.age-btn.no:hover {
    background: rgba(255, 0, 0, 0.9);
}

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

    nav ul {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 70%;
        max-width: 300px;
        height: calc(100vh - 70px);
        background: rgba(26, 26, 46, 0.98);
        flex-direction: column;
        padding: 2rem;
        transition: right 0.3s ease;
        gap: 1.5rem;
        box-shadow: -5px 0 20px rgba(0, 0, 0, 0.5);
    }

    nav ul.active {
        right: 0;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .game-frame {
        height: 400px;
    }

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

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