:root {
    --deep-blue: #1a3a5f;
    --pale-blue: #e0f2fe;
    --sky-accent: #38bdf8;
    --card-bg: rgba(10, 24, 41, 0.6);
    --border-accent: rgba(56, 189, 248, 0.4);
}

* {
    box-sizing: border-box;
}

body {
    background-color: var(--deep-blue);
    color: var(--pale-blue);
    font-family: 'Segoe UI', sans-serif;
    margin: 0;
    min-height: 100vh;
    text-align: center;
}

main {
    padding: 2rem 1.5rem 3rem;
}

h1 {
    font-family: 'Georgia', serif;
    color: var(--sky-accent);
    margin: 0 0 1.5rem;
}

p {
    line-height: 1.7;
    font-size: 1.05rem;
    max-width: 900px;
    margin: 1rem auto;
}

.callout {
    font-size: 1.1rem;
    letter-spacing: 0.01em;
}

.site-nav {
    margin: 1rem 0 1.5rem;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 0.75rem;
    font-weight: 600;
}

.site-nav a {
    color: var(--pale-blue);
    text-decoration: none;
    padding: 0.25rem 0.5rem;
    border-bottom: 2px solid transparent;
    transition: color 0.2s ease, border-color 0.2s ease;
}

.site-nav a:hover {
    color: var(--sky-accent);
    border-color: var(--sky-accent);
}

hr {
    border: none;
    border-top: 1px solid var(--border-accent);
    margin: 2rem auto;
    width: clamp(200px, 60%, 500px);
}

.media-wrapper {
    display: flex;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.video-frame {
    border: none;
    width: min(560px, 100%);
    height: 315px;
    border-radius: 12px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.35);
}

.feature-image {
    width: 300px;
    max-width: 90vw;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.4);
    margin-bottom: 1.5rem;
}

.feature-image.small {
    width: 200px;
}

.map-image {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.35);
    margin: 1rem 0 2rem;
}

.data-table {
    width: min(900px, 90vw);
    margin: 1.5rem auto 2.5rem;
    border-collapse: collapse;
    background-color: var(--card-bg);
    backdrop-filter: blur(6px);
}

.data-table th,
.data-table td {
    border: 1px solid var(--border-accent);
    padding: 0.85rem;
}

.data-table th {
    font-family: 'Georgia', serif;
    font-size: 1rem;
    color: var(--sky-accent);
    background-color: rgba(255, 255, 255, 0.05);
}

.data-table td {
    font-size: 0.95rem;
}

.planet-icon {
    width: 60px;
    height: 60px;
    object-fit: contain;
}

img {
    max-width: 100%;
    height: auto;
}

@media (max-width: 600px) {
    .video-frame {
        height: 200px;
    }

    .site-nav {
        gap: 0.5rem;
    }

    .data-table th,
    .data-table td {
        font-size: 0.85rem;
        padding: 0.75rem;
    }

    .planet-icon {
        width: 45px;
        height: 45px;
    }
}