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

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

body {
    font-family: 'Nunito', sans-serif;
    background: linear-gradient(180deg, #001a33 0%, #002244 50%, #001122 100%);
    color: #e6f2ff;
    min-height: 100vh;
    line-height: 1.75;
}

/* Decorative bubbles */
body::before {
    content: '';
    position: fixed;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(0, 200, 255, 0.05) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(0, 255, 200, 0.04) 0%, transparent 25%),
        radial-gradient(circle at 50% 50%, rgba(100, 200, 255, 0.03) 0%, transparent 30%);
    pointer-events: none;
    z-index: -1;
}

/* Header */
.header {
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 8000;
    background: rgba(0, 26, 51, 0.92);
    backdrop-filter: blur(15px);
    border-bottom: 2px solid rgba(0, 200, 255, 0.2);
}

.header-content {
    max-width: 1500px;
    margin: 0 auto;
    padding: 18px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand-name {
    font-family: 'Josefin Sans', sans-serif;
    font-size: 2.2rem;
    font-weight: 700;
    color: #00c8ff;
    text-decoration: none;
    text-transform: lowercase;
    letter-spacing: 4px;
}

.menu-trigger {
    display: none;
    background: transparent;
    border: 2px solid #00c8ff;
    border-radius: 8px;
    padding: 8px 12px;
    cursor: pointer;
}

.menu-trigger span {
    display: block;
    width: 22px;
    height: 2px;
    background: #00c8ff;
    margin: 5px 0;
    transition: 0.3s;
}

.menu-trigger.toggled span:first-child {
    transform: rotate(45deg) translate(5px, 5px);
}

.menu-trigger.toggled span:nth-child(2) {
    opacity: 0;
}

.menu-trigger.toggled span:last-child {
    transform: rotate(-45deg) translate(5px, -5px);
}

.navigation ul {
    display: flex;
    gap: 38px;
    list-style: none;
}

.navigation a {
    font-family: 'Josefin Sans', sans-serif;
    color: #80d4ff;
    text-decoration: none;
    font-weight: 400;
    font-size: 1rem;
    letter-spacing: 1px;
    transition: all 0.3s;
}

.navigation a:hover {
    color: #00ffc8;
}

/* Main Content */
.content {
    padding-top: 95px;
}

/* Welcome Section */
.welcome {
    padding: 90px 30px;
    text-align: center;
    position: relative;
}

.welcome h1 {
    font-family: 'Josefin Sans', sans-serif;
    font-size: 3.6rem;
    color: #00c8ff;
    margin-bottom: 25px;
    font-weight: 700;
    letter-spacing: 3px;
}

.welcome .intro {
    font-size: 1.3rem;
    color: #99ccff;
    max-width: 800px;
    margin: 0 auto;
    font-weight: 300;
}

/* Card Row */
.card-row {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 28px;
    padding: 50px 30px;
    max-width: 1400px;
    margin: 0 auto;
}

.info-card {
    flex: 1 1 300px;
    max-width: 380px;
    background: linear-gradient(180deg, rgba(0, 100, 150, 0.3) 0%, rgba(0, 34, 68, 0.6) 100%);
    border: 1px solid rgba(0, 200, 255, 0.25);
    border-radius: 20px;
    padding: 40px 30px;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

.info-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 15px 50px rgba(0, 200, 255, 0.15);
}

.info-card .symbol {
    font-size: 3rem;
    margin-bottom: 18px;
}

.info-card h3 {
    font-family: 'Josefin Sans', sans-serif;
    color: #00ffc8;
    font-size: 1.3rem;
    margin-bottom: 12px;
}

.info-card p {
    color: #99ccff;
    font-size: 0.98rem;
}

/* Game Area */
.game-area {
    padding: 70px 30px;
    max-width: 1050px;
    margin: 0 auto;
}

.game-area h2 {
    font-family: 'Josefin Sans', sans-serif;
    text-align: center;
    color: #00c8ff;
    font-size: 2.4rem;
    margin-bottom: 35px;
    letter-spacing: 2px;
}

.game-box {
    background: rgba(0, 17, 34, 0.9);
    border: 3px solid rgba(0, 200, 255, 0.4);
    border-radius: 25px;
    padding: 12px;
    overflow: hidden;
    box-shadow: 0 0 60px rgba(0, 200, 255, 0.1);
}

.game-box iframe {
    width: 100%;
    height: 570px;
    border: none;
    border-radius: 16px;
    display: block;
}

/* Columns Section */
.columns-section {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 35px;
    padding: 60px 30px;
    max-width: 1300px;
    margin: 0 auto;
}

.column-item {
    background: rgba(0, 50, 100, 0.25);
    padding: 40px;
    border-radius: 18px;
    border-bottom: 4px solid #00c8ff;
}

.column-item h3 {
    font-family: 'Josefin Sans', sans-serif;
    color: #00ffc8;
    font-size: 1.4rem;
    margin-bottom: 15px;
}

.column-item p {
    color: #99ccff;
    font-size: 1.02rem;
}

/* Article Content */
.article {
    max-width: 920px;
    margin: 0 auto;
    padding: 60px 35px;
}

.article h1 {
    font-family: 'Josefin Sans', sans-serif;
    color: #00c8ff;
    font-size: 2.8rem;
    text-align: center;
    margin-bottom: 45px;
    letter-spacing: 2px;
}

.article h2 {
    font-family: 'Josefin Sans', sans-serif;
    color: #00ffc8;
    font-size: 1.4rem;
    margin: 35px 0 15px;
}

.article p {
    color: #99ccff;
    margin-bottom: 18px;
    font-size: 1.05rem;
}

.article ul {
    color: #99ccff;
    margin: 18px 0 18px 28px;
}

.article li {
    margin-bottom: 10px;
}

/* Footer */
.footer {
    background: rgba(0, 17, 34, 0.95);
    padding: 55px 30px 35px;
    margin-top: 80px;
    border-top: 2px solid rgba(0, 200, 255, 0.3);
}

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

.footer-content h4 {
    font-family: 'Josefin Sans', sans-serif;
    color: #00c8ff;
    margin-bottom: 22px;
    letter-spacing: 2px;
}

.resource-links {
    display: flex;
    justify-content: center;
    gap: 45px;
    flex-wrap: wrap;
    margin-bottom: 35px;
}

.resource-links a {
    color: #80d4ff;
    text-decoration: none;
    transition: color 0.3s;
}

.resource-links a:hover {
    color: #00ffc8;
}

.footer-text {
    color: #4d8faa;
    font-size: 0.9rem;
    padding-top: 20px;
    border-top: 1px solid rgba(0, 200, 255, 0.15);
}

/* Age Check */
.age-check {
    position: fixed;
    inset: 0;
    background: rgba(0, 17, 34, 0.98);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 99999;
}

.age-check.passed {
    display: none;
}

.age-dialog {
    background: linear-gradient(180deg, #002244 0%, #001122 100%);
    border: 2px solid #00c8ff;
    border-radius: 25px;
    padding: 55px;
    text-align: center;
    max-width: 480px;
    box-shadow: 0 0 100px rgba(0, 200, 255, 0.2);
}

.age-dialog h2 {
    font-family: 'Josefin Sans', sans-serif;
    color: #00c8ff;
    font-size: 1.9rem;
    margin-bottom: 18px;
}

.age-dialog p {
    color: #99ccff;
    margin-bottom: 32px;
}

.age-actions {
    display: flex;
    gap: 18px;
    justify-content: center;
}

.age-button {
    font-family: 'Josefin Sans', sans-serif;
    padding: 14px 48px;
    font-size: 1rem;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s;
    letter-spacing: 1px;
}

.age-button.enter {
    background: linear-gradient(180deg, #00c8ff 0%, #0099cc 100%);
    color: #001122;
    border: none;
    font-weight: 600;
}

.age-button.enter:hover {
    background: linear-gradient(180deg, #00e5ff 0%, #00b8e6 100%);
    box-shadow: 0 0 35px rgba(0, 200, 255, 0.4);
}

.age-button.exit {
    background: transparent;
    color: #00c8ff;
    border: 2px solid #00c8ff;
}

.age-button.exit:hover {
    background: rgba(0, 200, 255, 0.1);
}

/* Responsive */
@media (max-width: 900px) {
    .columns-section {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .menu-trigger {
        display: block;
    }

    .navigation {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: rgba(0, 26, 51, 0.98);
        display: flex;
        align-items: center;
        justify-content: center;
        transform: translateX(-100%);
        transition: transform 0.4s ease;
    }

    .navigation.shown {
        transform: translateX(0);
    }

    .navigation ul {
        flex-direction: column;
        text-align: center;
        gap: 32px;
    }

    .navigation a {
        font-size: 1.4rem;
    }

    .welcome h1 {
        font-size: 2.4rem;
    }

    .game-box iframe {
        height: 430px;
    }

    .age-dialog {
        margin: 20px;
        padding: 40px 28px;
    }

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