@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;700;900&family=Nunito:wght@300;400;600;700&display=swap');

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

:root {
    --moon-cyan: #06b6d4;
    --deep-blue: #0284c7;
    --night-blue: #0c4a6e;
    --dark-night: #082f49;
    --moon-silver: #e0f2fe;
    --star-white: #f0f9ff;
    --accent-cyan: #22d3ee;
}

body {
    font-family: 'Nunito', sans-serif;
    background: radial-gradient(ellipse at top, #0c4a6e, #020617);
    background-attachment: fixed;
    color: var(--star-white);
    min-height: 100vh;
    line-height: 1.7;
}

/* Header */
.site-header {
    background: rgba(8, 47, 73, 0.95);
    backdrop-filter: blur(15px);
    padding: 1.5rem 0;
    border-bottom: 3px solid var(--moon-cyan);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: 0 5px 30px rgba(6, 182, 212, 0.4);
}

.header-wrap {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 1.25rem;
}

.logo-graphic {
    width: 55px;
    height: 55px;
}

.site-name {
    font-family: 'Montserrat', sans-serif;
    font-size: 2.75rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--moon-cyan), var(--accent-cyan), var(--moon-silver));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.nav-bar {
    display: flex;
}

.nav-items {
    display: flex;
    list-style: none;
    gap: 0.5rem;
}

.nav-items a {
    display: block;
    padding: 0.85rem 1.5rem;
    color: var(--star-white);
    text-decoration: none;
    font-weight: 600;
    border-radius: 10px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-items a::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--moon-cyan), var(--accent-cyan));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.nav-items a:hover::before,
.nav-items a.active-page::before {
    opacity: 0.2;
}

.nav-items a:hover,
.nav-items a.active-page {
    color: var(--accent-cyan);
}

/* Mobile Menu Button */
.mobile-menu {
    display: none;
    background: var(--moon-cyan);
    border: none;
    padding: 0.9rem 1.1rem;
    border-radius: 10px;
    cursor: pointer;
}

.menu-bars {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.menu-bars span {
    width: 27px;
    height: 3px;
    background: white;
    border-radius: 3px;
}

/* Main Wrapper */
.main-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    padding: 4rem 2rem;
}

/* Hero */
.hero-section {
    text-align: center;
    padding: 3rem 0;
    margin-bottom: 4rem;
}

.hero-title {
    font-family: 'Montserrat', sans-serif;
    font-size: 5.5rem;
    font-weight: 900;
    background: linear-gradient(135deg, var(--moon-cyan), var(--accent-cyan), var(--moon-silver));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-transform: uppercase;
    letter-spacing: 8px;
    margin-bottom: 1.25rem;
    text-shadow: 0 0 50px rgba(6, 182, 212, 0.5);
}

.hero-tagline {
    font-size: 1.6rem;
    color: var(--moon-silver);
    font-weight: 300;
}

/* Notice Cards */
.notice-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.5rem;
    margin: 4rem 0;
}

.notice-item {
    background: linear-gradient(135deg, rgba(8, 47, 73, 0.6), rgba(12, 74, 110, 0.4));
    border: 2px solid rgba(6, 182, 212, 0.5);
    border-radius: 20px;
    padding: 2.75rem;
    text-align: center;
    transition: all 0.4s ease;
}

.notice-item:hover {
    transform: translateY(-15px);
    box-shadow: 0 20px 60px rgba(6, 182, 212, 0.6);
    border-color: var(--accent-cyan);
}

.notice-icon {
    font-size: 4rem;
    margin-bottom: 1.5rem;
    filter: drop-shadow(0 0 20px rgba(34, 211, 238, 0.8));
}

.notice-item h3 {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.7rem;
    color: var(--accent-cyan);
    margin-bottom: 1.25rem;
    text-transform: uppercase;
}

.notice-item p {
    color: var(--moon-silver);
    line-height: 1.7;
}

/* Section Box */
.section-box {
    background: linear-gradient(135deg, rgba(8, 47, 73, 0.5), rgba(2, 6, 23, 0.7));
    border: 2px solid rgba(6, 182, 212, 0.4);
    border-radius: 25px;
    padding: 3.5rem;
    margin-bottom: 3rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
}

.section-box h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 3.25rem;
    color: var(--moon-cyan);
    margin-bottom: 2rem;
    text-transform: uppercase;
    letter-spacing: 3px;
}

.section-box p {
    margin-bottom: 1.75rem;
    color: var(--star-white);
    line-height: 1.85;
    font-size: 1.08rem;
}

.section-box ul, .section-box ol {
    margin-left: 2.5rem;
    margin-bottom: 1.75rem;
}

.section-box li {
    margin-bottom: 1rem;
    color: var(--star-white);
    line-height: 1.8;
}

.section-box strong {
    color: var(--accent-cyan);
}

/* Game Container */
.game-container {
    background: radial-gradient(circle, rgba(8, 47, 73, 0.8), rgba(2, 6, 23, 0.9));
    border: 4px solid var(--moon-cyan);
    border-radius: 30px;
    padding: 3.5rem;
    margin: 4rem 0;
    text-align: center;
    box-shadow: 0 0 80px rgba(6, 182, 212, 0.5);
}

.game-container h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 3rem;
    color: var(--accent-cyan);
    margin-bottom: 2.5rem;
    text-transform: uppercase;
    letter-spacing: 5px;
}

.game-frame {
    width: 100%;
    max-width: 1100px;
    height: 720px;
    border: none;
    border-radius: 20px;
    box-shadow: 0 15px 60px rgba(0, 0, 0, 0.9);
    margin: 0 auto;
    display: block;
}

/* Footer */
.page-footer {
    background: rgba(8, 47, 73, 0.98);
    border-top: 3px solid var(--moon-cyan);
    padding: 3.5rem 2rem;
    margin-top: 6rem;
}

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

.footer-heading {
    font-family: 'Montserrat', sans-serif;
    font-size: 2.1rem;
    color: var(--moon-cyan);
    margin-bottom: 2rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2.5rem;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
}

.footer-links a {
    color: var(--star-white);
    text-decoration: none;
    padding: 1.1rem 2.5rem;
    border: 2px solid var(--moon-cyan);
    border-radius: 15px;
    font-weight: 600;
    transition: all 0.3s ease;
}

.footer-links a:hover {
    background: var(--moon-cyan);
    color: var(--dark-night);
    transform: translateY(-6px);
    box-shadow: 0 10px 35px rgba(6, 182, 212, 0.6);
}

.copyright-text {
    color: var(--moon-silver);
    font-size: 0.96rem;
}

/* Age Modal */
.age-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.98);
    z-index: 10000;
    justify-content: center;
    align-items: center;
}

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

.age-modal-content {
    background: linear-gradient(135deg, var(--dark-night), var(--night-blue));
    border: 5px solid var(--moon-cyan);
    border-radius: 30px;
    padding: 4rem;
    max-width: 700px;
    text-align: center;
    box-shadow: 0 0 120px rgba(6, 182, 212, 0.9);
    animation: modalSlide 0.6s ease;
}

@keyframes modalSlide {
    from {
        opacity: 0;
        transform: translateY(-60px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.age-modal-icon {
    font-size: 7rem;
    margin-bottom: 2rem;
    filter: drop-shadow(0 0 30px rgba(34, 211, 238, 0.9));
}

.age-modal-content h2 {
    font-family: 'Montserrat', sans-serif;
    font-size: 4rem;
    color: var(--moon-cyan);
    margin-bottom: 1.75rem;
    text-transform: uppercase;
    letter-spacing: 4px;
}

.age-modal-content p {
    color: var(--moon-silver);
    margin-bottom: 2.75rem;
    font-size: 1.25rem;
    line-height: 1.7;
}

.age-modal-buttons {
    display: flex;
    gap: 2.25rem;
    justify-content: center;
}

.age-btn {
    padding: 1.4rem 4rem;
    border: none;
    border-radius: 18px;
    font-size: 1.5rem;
    font-weight: 800;
    font-family: 'Montserrat', sans-serif;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
}

.age-confirm {
    background: linear-gradient(135deg, var(--moon-cyan), var(--accent-cyan));
    color: white;
    box-shadow: 0 10px 35px rgba(6, 182, 212, 0.6);
}

.age-confirm:hover {
    transform: scale(1.12);
    box-shadow: 0 15px 50px rgba(6, 182, 212, 0.8);
}

.age-decline {
    background: rgba(255, 255, 255, 0.08);
    color: var(--star-white);
    border: 3px solid rgba(255, 255, 255, 0.25);
}

.age-decline:hover {
    background: rgba(239, 68, 68, 0.3);
    border-color: #ef4444;
}

/* Responsive */
@media (max-width: 968px) {
    .mobile-menu {
        display: block;
    }
    .nav-bar {
        flex-basis: 100%;
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }
    .nav-bar.open {
        max-height: 500px;
        margin-top: 1.5rem;
    }
    .nav-items {
        flex-direction: column;
        width: 100%;
    }
    .nav-items a {
        width: 100%;
        text-align: center;
    }
    .site-name {
        font-size: 2.25rem;
    }
    .hero-title {
        font-size: 3.5rem;
    }
    .notice-grid {
        grid-template-columns: 1fr;
    }
    .section-box {
        padding: 2.5rem;
    }
    .game-frame {
        height: 520px;
    }
    .age-modal-content {
        margin: 1.5rem;
        padding: 3rem;
    }
    .age-modal-buttons {
        flex-direction: column;
    }
    .footer-links {
        flex-direction: column;
        gap: 1.25rem;
    }
}