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

:root {
    --mint: #A7F3D0;
    --teal: #14B8A6;
    --sage: #6EE7B7;
    --ivory: #FFFBEB;
    --slate: #334155;
    --soft-gray: #F1F5F9;
    --white: #FFFFFF;
}

body {
    font-family: 'Quicksand', sans-serif;
    background: var(--ivory);
    color: var(--slate);
    line-height: 1.6;
}

/* Navigation */
.navbar {
    background: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    text-decoration: none;
}

.brand-emoji {
    font-size: 2.2rem;
}

.brand-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--teal);
    letter-spacing: 1px;
}

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

.navigation a {
    color: var(--slate);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
    font-size: 1rem;
}

.navigation a:hover {
    color: var(--teal);
}

.mobile-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.8rem;
    color: var(--teal);
    cursor: pointer;
}

/* Main Content */
.content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.title-section {
    text-align: center;
    margin-bottom: 4rem;
}

.title-section h1 {
    font-size: 3rem;
    color: var(--teal);
    margin-bottom: 1rem;
    font-weight: 700;
}

.title-section .lead {
    font-size: 1.3rem;
    color: var(--slate);
    font-weight: 500;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.feature-box {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s;
}

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

.feature-box .emoji {
    font-size: 3rem;
    margin-bottom: 1rem;
    display: block;
}

.feature-box h3 {
    color: var(--teal);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.feature-box p {
    color: #64748B;
    line-height: 1.7;
}

.important-notice {
    background: linear-gradient(135deg, var(--mint), var(--sage));
    border-radius: 15px;
    padding: 2.5rem;
    margin: 3rem 0;
    box-shadow: 0 4px 20px rgba(20, 184, 166, 0.15);
}

.important-notice h3 {
    color: var(--slate);
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    text-align: center;
    font-weight: 700;
}

.important-notice ul {
    list-style: none;
    max-width: 800px;
    margin: 0 auto;
}

.important-notice li {
    padding: 1rem 0;
    padding-left: 2.5rem;
    position: relative;
    color: var(--slate);
    font-weight: 600;
    font-size: 1.05rem;
}

.important-notice li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--teal);
    font-size: 1.5rem;
    font-weight: 900;
}

.game-area {
    background: var(--white);
    border-radius: 20px;
    padding: 3rem;
    margin: 3rem 0;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
}

.game-area h2 {
    text-align: center;
    font-size: 2.2rem;
    color: var(--teal);
    margin-bottom: 1rem;
    font-weight: 700;
}

.game-area .subtitle {
    text-align: center;
    color: #64748B;
    margin-bottom: 2rem;
    font-size: 1.15rem;
}

.game-area iframe {
    width: 100%;
    height: 650px;
    border: none;
    border-radius: 12px;
    background: var(--soft-gray);
}

.content-area {
    background: var(--white);
    border-radius: 15px;
    padding: 3rem;
    margin: 2rem 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.content-area h1 {
    color: var(--teal);
    font-size: 2.8rem;
    margin-bottom: 2rem;
    text-align: center;
    font-weight: 700;
}

.content-area h2 {
    color: var(--teal);
    font-size: 2rem;
    margin: 2.5rem 0 1.5rem;
    font-weight: 700;
}

.content-area p {
    color: #475569;
    line-height: 1.9;
    font-size: 1.08rem;
    margin-bottom: 1.5rem;
}

.content-area ul,
.content-area ol {
    margin-left: 2.5rem;
    margin-bottom: 1.5rem;
    color: #475569;
}

.content-area li {
    margin-bottom: 0.8rem;
    line-height: 1.7;
}

/* Footer */
.site-footer {
    background: var(--slate);
    color: white;
    padding: 2.5rem 0;
    margin-top: 5rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
    text-align: center;
}

.footer-content p {
    margin-bottom: 1.5rem;
}

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

.footer-links a {
    color: var(--mint);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: var(--sage);
}

/* Age Check Modal */
.age-check {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(51, 65, 85, 0.95);
    z-index: 9999;
    align-items: center;
    justify-content: center;
}

.age-check.show {
    display: flex;
}

.check-box {
    background: var(--white);
    padding: 3rem;
    border-radius: 20px;
    max-width: 550px;
    text-align: center;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.check-box h2 {
    color: var(--teal);
    font-size: 2.3rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.check-box p {
    color: #64748B;
    margin-bottom: 2rem;
    line-height: 1.8;
    font-size: 1.1rem;
}

.check-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
}

.check-button {
    padding: 1rem 2.5rem;
    border: none;
    border-radius: 10px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s;
    font-family: 'Quicksand', sans-serif;
}

.check-button.accept {
    background: var(--teal);
    color: white;
}

.check-button.accept:hover {
    background: #0F9384;
    transform: scale(1.05);
}

.check-button.decline {
    background: var(--soft-gray);
    color: var(--slate);
}

.check-button.decline:hover {
    background: #CBD5E1;
}

/* Responsive */
@media (max-width: 768px) {
    .mobile-toggle {
        display: block;
    }
    
    .navigation {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s;
    }
    
    .navigation.active {
        max-height: 400px;
    }
    
    .navigation ul {
        flex-direction: column;
        padding: 2rem;
        gap: 0;
    }
    
    .navigation li {
        padding: 1rem 0;
        border-bottom: 1px solid var(--soft-gray);
    }
    
    .title-section h1 {
        font-size: 2.2rem;
    }
    
    .feature-grid {
        grid-template-columns: 1fr;
    }
    
    .content-area {
        padding: 2rem;
    }
    
    .game-area iframe {
        height: 450px;
    }
    
    .check-box {
        margin: 1rem;
        padding: 2rem;
    }
    
    .check-buttons {
        flex-direction: column;
    }
}