@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;500;600;700&family=Source+Sans+Pro:wght@300;400;600;700&display=swap');

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --white: #ffffff;
    --off-white: #f8fafc;
    --gray-100: #f1f5f9;
    --gray-200: #e2e8f0;
    --gray-400: #94a3b8;
    --gray-600: #475569;
    --gray-800: #1e293b;
    --gray-900: #0f172a;
}

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

body {
    font-family: 'Source Sans Pro', sans-serif;
    background: var(--white);
    color: var(--gray-800);
    line-height: 1.75;
}

header {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1300px;
    margin: 0 auto;
    padding: 0 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-logo {
    font-family: 'Playfair Display', serif;
    font-size: 1.9rem;
    font-weight: 700;
    color: var(--gray-900);
    text-decoration: none;
    letter-spacing: -1px;
}

.site-logo span {
    color: var(--primary);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 40px;
}

nav ul li a {
    color: var(--gray-600);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: color 0.2s;
}

nav ul li a:hover {
    color: var(--primary);
}

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

.mobile-menu-btn span {
    width: 24px;
    height: 2px;
    background: var(--gray-800);
    transition: 0.3s;
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

.hero-section {
    padding: 100px 30px;
    max-width: 1300px;
    margin: 0 auto;
}

.hero-content {
    max-width: 700px;
}

.hero-content h1 {
    font-family: 'Playfair Display', serif;
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--gray-900);
    line-height: 1.15;
    margin-bottom: 25px;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--gray-600);
    margin-bottom: 35px;
    font-weight: 300;
}

.primary-btn {
    display: inline-block;
    padding: 16px 40px;
    background: var(--primary);
    color: var(--white);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    border-radius: 8px;
    transition: background 0.2s;
}

.primary-btn:hover {
    background: var(--primary-dark);
}

.notices-section {
    background: var(--off-white);
    padding: 80px 30px;
}

.notices-row {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.notice-item {
    background: var(--white);
    padding: 35px 30px;
    border-radius: 12px;
    border: 1px solid var(--gray-200);
    text-align: center;
}

.notice-item .symbol {
    width: 60px;
    height: 60px;
    background: var(--gray-100);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-size: 1.5rem;
}

.notice-item h3 {
    font-family: 'Playfair Display', serif;
    font-size: 1.2rem;
    color: var(--gray-900);
    margin-bottom: 12px;
}

.notice-item p {
    color: var(--gray-600);
    font-size: 0.95rem;
}

.game-section {
    padding: 100px 30px;
    max-width: 1300px;
    margin: 0 auto;
}

.section-title {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    color: var(--gray-900);
    margin-bottom: 15px;
}

.section-subtitle {
    color: var(--gray-600);
    font-size: 1.1rem;
    margin-bottom: 50px;
}

.game-embed {
    background: var(--gray-900);
    border-radius: 16px;
    padding: 25px;
    max-width: 1000px;
}

.game-embed iframe {
    width: 100%;
    height: 550px;
    border: none;
    border-radius: 10px;
}

.about-section {
    background: var(--gray-900);
    padding: 100px 30px;
    color: var(--white);
}

.about-inner {
    max-width: 800px;
    margin: 0 auto;
}

.about-inner h2 {
    font-family: 'Playfair Display', serif;
    font-size: 2.5rem;
    margin-bottom: 30px;
}

.about-inner p {
    font-size: 1.1rem;
    margin-bottom: 20px;
    color: var(--gray-400);
    font-weight: 300;
}

.features-section {
    padding: 80px 30px;
    background: var(--off-white);
}

.features-grid {
    max-width: 1100px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.feature-item {
    text-align: center;
    padding: 30px 20px;
}

.feature-item .icon {
    font-size: 2rem;
    margin-bottom: 15px;
}

.feature-item h4 {
    font-family: 'Playfair Display', serif;
    font-size: 1.05rem;
    color: var(--gray-900);
    margin-bottom: 8px;
}

.feature-item p {
    color: var(--gray-600);
    font-size: 0.9rem;
}

footer {
    background: var(--white);
    border-top: 1px solid var(--gray-200);
    padding: 50px 30px;
}

.footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    text-align: center;
}

.footer-nav {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.footer-nav a {
    color: var(--gray-600);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

.footer-nav a:hover {
    color: var(--primary);
}

.responsible-links {
    padding-top: 25px;
    border-top: 1px solid var(--gray-200);
}

.responsible-links p {
    color: var(--gray-400);
    font-size: 0.85rem;
    margin-bottom: 12px;
}

.responsible-links a {
    color: var(--primary);
    text-decoration: none;
    margin: 0 15px;
    font-size: 0.85rem;
}

.responsible-links a:hover {
    text-decoration: underline;
}

.copyright {
    margin-top: 25px;
    color: var(--gray-400);
    font-size: 0.8rem;
}

.age-overlay {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

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

.age-dialog {
    background: var(--white);
    border-radius: 16px;
    padding: 50px 45px;
    text-align: center;
    max-width: 440px;
    width: 90%;
}

.age-dialog h2 {
    font-family: 'Playfair Display', serif;
    font-size: 1.8rem;
    color: var(--gray-900);
    margin-bottom: 18px;
}

.age-dialog p {
    color: var(--gray-600);
    margin-bottom: 30px;
}

.age-dialog-btns {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.age-dialog-btn {
    padding: 14px 35px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s;
}

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

.age-dialog-btn.yes:hover {
    background: var(--primary-dark);
}

.age-dialog-btn.no {
    background: var(--gray-100);
    color: var(--gray-800);
}

.age-dialog-btn.no:hover {
    background: var(--gray-200);
}

.page-header {
    padding: 120px 30px 60px;
    background: var(--off-white);
}

.page-header h1 {
    font-family: 'Playfair Display', serif;
    font-size: 2.8rem;
    color: var(--gray-900);
    max-width: 1100px;
    margin: 0 auto;
}

.page-main {
    padding: 60px 30px;
    max-width: 800px;
    margin: 0 auto;
}

.page-main h2 {
    font-family: 'Playfair Display', serif;
    font-size: 1.5rem;
    color: var(--gray-900);
    margin: 40px 0 18px;
}

.page-main p {
    color: var(--gray-600);
    margin-bottom: 16px;
}

.page-main ul {
    margin-left: 25px;
    margin-bottom: 20px;
}

.page-main li {
    color: var(--gray-600);
    margin-bottom: 8px;
}

.play-notice {
    background: var(--gray-100);
    border-radius: 12px;
    padding: 25px;
    margin-bottom: 40px;
    border-left: 4px solid var(--primary);
}

.play-notice h3 {
    font-family: 'Playfair Display', serif;
    color: var(--gray-900);
    margin-bottom: 10px;
}

.play-notice p {
    color: var(--gray-600);
    margin: 0;
}

@media (max-width: 992px) {
    .notices-row {
        grid-template-columns: 1fr;
        max-width: 400px;
    }
    
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
}

@media (max-width: 768px) {
    .mobile-menu-btn {
        display: flex;
    }
    
    nav {
        position: fixed;
        top: 72px;
        left: 0;
        width: 100%;
        background: var(--white);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s;
        border-bottom: 1px solid var(--gray-200);
    }
    
    nav.active {
        max-height: 320px;
    }
    
    nav ul {
        flex-direction: column;
        padding: 20px 30px;
        gap: 0;
    }
    
    nav ul li a {
        display: block;
        padding: 15px 0;
        border-bottom: 1px solid var(--gray-100);
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .game-embed iframe {
        height: 380px;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-nav {
        flex-direction: column;
        gap: 15px;
    }
    
    .responsible-links a {
        display: block;
        margin: 10px 0;
    }
    
    .age-dialog-btns {
        flex-direction: column;
    }
    
    .age-dialog-btn {
        width: 100%;
    }
}