/* Astro Modern UI - Dark/Light Mode */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;600&display=swap');
:root {
    --main-bg: #f4f8fb;
    --card-bg: #fff;
    --primary: #003366;
    --accent: #0175ea;
    --nav-link: #0667c8;
    --nav-link-hover: #0055aa;
    --shadow: 0 2px 12px rgba(0,0,0,0.10);
    --radius: 10px;
    --header-bg: #181c24;
    --header-text: #fff;
    --header-shadow: 0 2px 12px rgba(0,0,0,0.18);
    --td-bg: #f7fbff;
    --td-color: #222;
    --body-text: #222;
}
[data-theme="dark"] {
    --main-bg: #181c24;
    --card-bg: #23283a;
    --primary: #e0e6f0;
    --accent: #4ea1ff;
    --nav-link: #e0e6f0;
    --nav-link-hover: #4ea1ff;
    --header-bg: #10131a;
    --header-text: #fff;
    --td-bg: #23283a;
    --td-color: #e0e6f0;
    --body-text: #e0e6f0;
}
body {
    background: var(--main-bg);
    transition: background 0.3s;
    font-family: 'Montserrat', Arial, Helvetica, sans-serif;
    font-weight: 300;
}
p {
    color: var(--body-text);
}
.astro-header {
    background: var(--header-bg);
    color: var(--header-text);
    box-shadow: var(--header-shadow);
    padding: 1.2rem 0 0.7rem 0;
    border-radius: 0 0 0 0;
    margin-bottom: 2.2rem;
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    z-index: 100;
}
.astro-header-brand {
    display: flex;
    align-items: center;
    justify-content: center; /* Center horizontally */
    gap: 1rem; /* space between logo and title */
}
.astro-logo {
    height: 80px;
    width: auto;
    object-fit: contain;
    display: block;
}
.astro-header-title {
    font-size: 2.1rem;
    text-align: center;
    letter-spacing: 1px;
    font-weight: bold;
    margin-bottom: 0.5rem;
    font-family: 'Montserrat', Arial, Helvetica, sans-serif;
}
.astro-nav {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.2rem;
    margin-bottom: 0.2rem;
}
.astro-nav a {
    color: var(--nav-link);
    text-decoration: none;
    font-weight: 400;
    font-size: 1.08rem;
    padding: 0.4em 1.1em;
    border-radius: 6px;
    transition: background 0.2s, color 0.2s;
    font-family: 'Montserrat', Arial, Helvetica, sans-serif;
}
.astro-nav a:hover, .astro-nav a:focus {
    background: var(--accent);
    color: #fff;
}
.astro-dark-toggle {
    position: absolute;
    right: 2rem;
    top: 1.5rem;
    background: none;
    border: none;
    color: var(--header-text);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.2s;
}
.astro-dark-toggle:hover { color: var(--accent); }
.astro-card {
    max-width: 850px;
    margin: 6rem auto 2.5rem auto;
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 2.5rem 2rem 2rem 2rem;
    font-family: 'Montserrat', Arial, Helvetica, sans-serif;
    animation: fadeIn 0.7s;
    font-weight: 300;
}
@keyframes fadeIn { from { opacity: 0; transform: translateY(30px);} to { opacity: 1; transform: none; } }
.astro-section {
    text-align: center;
}
.astro-section h3 {
    color: var(--accent);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-family: 'Montserrat', Arial, Helvetica, sans-serif;
    font-weight: 300;
}
.astro-section img {
    max-width: 100%;
    border-radius: 8px;
    box-shadow: 0 1px 8px rgba(0,0,0,0.13);
    margin-bottom: 0.7rem;
    transition: transform 0.2s;
}
.astro-section img:hover {
    transform: scale(1.025);
}
.astro-details {
    margin-top: 2.2rem;
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 0.5rem;
    background: none;
}
.astro-details td {
    background: var(--td-bg);
    color: var(--td-color);
    padding: 0.7rem 0.8rem;
    border-radius: 6px;
    font-size: 1.08rem;
    vertical-align: top;
    font-family: 'Montserrat', Arial, Helvetica, sans-serif;
    font-weight: 300;
}
.astro-details td:first-child {
    font-weight: 400;
    color: var(--primary);
    width: 32%;
}
.astro-dim-overlay {
    position: fixed;
    left: 0; right: 0; bottom: 0;
    width: 100vw;
    background: rgba(10, 15, 25, 0.72);
    z-index: 90; /* Lower than .astro-header (z-index: 100) */
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.25s;
    /* By default, overlay covers everything. We'll adjust top for desktop below. */
}
.astro-dim-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

.astro-skymap-section h3{
    color: var(--accent);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-family: 'Montserrat', Arial, Helvetica, sans-serif;
    font-weight: 300;
}
@media (min-width: 601px) {
    .astro-dim-overlay {
        /* Only cover below the header on desktop */
        top: 4.1rem; /* header height: 1.2rem + 0.5rem + 2.4rem approx */
        height: auto;
    }
}
@media (max-width: 600px) {
    .astro-dim-overlay {
        top: 0;
        height: 100vh;
        z-index: 299; /* below nav (z-index: 300), above rest */
    }
    .astro-header {
        padding: 0.7rem 0 0.7rem 0;
        border-radius: 0 0 0 0;
        margin-bottom: 1.2rem;
        position: static;
        width: 100%;
    }
    .astro-header-title {
        font-size: 1.1rem;
        margin-bottom: 0.7rem;
        font-weight: bold;
    }
    .astro-logo {
        height: 40px;
        width: auto;
        object-fit: contain;
        display: block;
    }
    .astro-nav-toggle {
        display: block;
        background: none;
        color: var(--accent);
        border: none;
        border-radius: 0;
        font-size: 1.08rem;
        font-family: 'Montserrat', Arial, Helvetica, sans-serif;
        font-weight: 400;
        padding: 0.5em 1.2em 0.5em 0.7rem;
        margin: 0.5rem 0 0.5rem 0.7rem;
        cursor: pointer;
        transition: color 0.2s;
        z-index: 201;
        position: relative;
        box-shadow: none;
        outline: none;
        text-align: left;
        max-width: 100%;
        border-bottom: 1px solid var(--accent);
        text-transform: uppercase;
        letter-spacing: 0.04em;
        font-weight: 600;
        opacity: 0.85;
    }
    .astro-nav-toggle:active, .astro-nav-toggle:focus {
        color: var(--nav-link-hover);
        background: none;
    }
    .astro-nav-toggle[aria-expanded="true"] {
        color: var(--nav-link-hover);
        opacity: 1;
    }
    .astro-nav {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
        margin-bottom: 0.2rem;
        width: 100vw;
        max-width: 100vw;
        background: var(--header-bg);
        padding: 0.5rem 0 0.5rem 0.7rem;
        box-sizing: border-box;
        position: fixed;
        left: 0;
        top: 0;
        z-index: 300;
        border-radius: 0 0 16px 16px;
        box-shadow: var(--header-shadow);
        display: none;
        transform: translateY(-100%);
        opacity: 0;
        pointer-events: none;
        transition: transform 0.35s cubic-bezier(.4,2,.6,1), opacity 0.25s;
    }
    .astro-nav.show {
        display: flex;
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
        animation: navDrop 0.35s cubic-bezier(.4,2,.6,1);
    }
    @keyframes navDrop {
        from { transform: translateY(-100%); opacity: 0; }
        to { transform: translateY(0); opacity: 1; }
    }
    .astro-nav a {
        width: 95vw;
        max-width: 320px;
        text-align: left;
        padding: 0.7em 0.5em;
        font-size: 1.05rem;
        border-radius: 8px;
        margin: 0;
        opacity: 0;
        transform: translateX(-30px);
        animation: navLinkFade 0.4s forwards;
    }
    .astro-nav.show a {
        opacity: 1;
        transform: translateX(0);
    }
    .astro-nav.show a:nth-child(1) { animation-delay: 0.08s; }
    .astro-nav.show a:nth-child(2) { animation-delay: 0.16s; }
    .astro-nav.show a:nth-child(3) { animation-delay: 0.24s; }
    .astro-nav.show a:nth-child(4) { animation-delay: 0.32s; }
    .astro-nav.show a:nth-child(5) { animation-delay: 0.40s; }
    .astro-nav.show a:nth-child(6) { animation-delay: 0.48s; }
    .astro-nav.show a:nth-child(7) { animation-delay: 0.56s; }
    .astro-nav.show a:nth-child(8) { animation-delay: 0.64s; }
    .astro-nav.show a:nth-child(9) { animation-delay: 0.72s; }
    @keyframes navLinkFade {
        from { opacity: 0; transform: translateX(-30px); }
        to { opacity: 1; transform: translateX(0); }
    }
    .astro-card {
        padding: 1.2rem 0.3rem;
        margin-top: 0.5rem;
    }
    .astro-section h3 { font-size: 1.1rem; }
    .astro-details td { font-size: 0.98rem; }
    .astro-dark-toggle { right: 0.7rem; top: 1rem; }
    body.astro-nav-open {
        overflow: hidden;
    }
}

/* Link styles */
a, a:visited {
    color: var(--accent);
    text-decoration: underline;
    transition: color 0.2s;
}
a:hover, a:focus {
    color: var(--nav-link-hover);
    text-decoration: underline;
}
[data-theme="dark"] a, [data-theme="dark"] a:visited {
    color: var(--nav-link);
}
[data-theme="dark"] a:hover, [data-theme="dark"] a:focus {
    color: var(--accent);
}