/* --- Global Styles & Mobile First --- */
:root {
    --color-background: #010007;
    --color-text: #e0e0e0;
    --color-accent: #00ffff;
    --font-primary: 'Orbitron', sans-serif;
    --star-base-size: 10px;
    --star-touch-size: 20px;
}

*, *::before, *::after {
    box-sizing: border-box;
}

body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: var(--color-background);
    color: var(--color-text);
    font-family: var(--font-primary);
}

.celestial-container {
    position: relative;
    width: 100%;
    height: 100%;
    isolation: isolate; /* New stacking context for z-index */
}

/* --- Star Elements --- */
.star {
    position: absolute;
    width: var(--star-touch-size);
    height: var(--star-touch-size);
    display: grid;
    place-items: center;
    cursor: pointer;
    z-index: 10;
    /* Use transparent background for a larger tap area */
    background-color: transparent; 
}

/* The visible part of the star */
.star::after {
    content: '';
    display: block;
    background-color: #fff;
    border-radius: 50%;
    width: var(--star-base-size);
    height: var(--star-base-size);
    box-shadow: 0 0 10px #fff, 0 0 20px #fff, 0 0 30px var(--color-accent);
    animation: twinkle 2s infinite alternate ease-in-out;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.star.latest::after {
    width: calc(var(--star-base-size) * 1.8);
    height: calc(var(--star-base-size) * 1.8);
    background-color: #ffcc00;
    box-shadow: 0 0 20px #ffcc00, 0 0 40px #ffcc00, 0 0 60px #ff0000;
    animation: pulse 1.5s infinite alternate ease-in-out;
}

.star.preview {
    /* The animation is now on the pseudo-element, not the container */
    animation: shooting-star 12s linear infinite;
}

.star.preview::after {
    width: 150%;
    height: 2px;
    background: linear-gradient(to left, transparent 0%, #fff 50%, var(--color-accent) 100%);
    box-shadow: 0 0 15px #00ffff, 0 0 25px #00ffff;
}

/* --- Interaction & Info Panel --- */
.star.is-active::after {
    transform: scale(2.5);
    box-shadow: 0 0 25px #fff, 0 0 45px var(--color-accent), 0 0 65px var(--color-accent);
}

.version-info {
    position: absolute;
    top: 30px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--color-text);
    background-color: rgba(0, 0, 0, 0.75);
    padding: 10px 20px;
    border-radius: 8px;
    border: 1px solid var(--color-accent);
    font-size: 1.2em;
    font-weight: 700;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.4s ease;
    z-index: 100;
}

.version-info.is-visible {
    opacity: 1;
}

.instructions {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
    z-index: 1;
}
.instructions__title {
    margin: 0;
    font-weight: 700;
}
.instructions__body {
    margin: 5px 0 0;
    font-size: 0.8em;
    max-width: 300px;
}

/* --- Keyframe Animations (Performant Properties) --- */
@keyframes twinkle {
    from { opacity: 0.6; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1.1); }
}

@keyframes pulse {
    from { transform: scale(1); filter: brightness(1); }
    to { transform: scale(1.15); filter: brightness(1.3); }
}

@keyframes shooting-star {
    0% { transform: translate(120vw, -20vh) rotate(-45deg); opacity: 1; }
    70% { opacity: 1; }
    100% { transform: translate(-20vw, 120vh) rotate(-45deg); opacity: 0; }
}

/* --- Desktop Enhancements --- */
@media (min-width: 768px) {
    :root {
        --star-base-size: 12px;
        --star-touch-size: 24px;
    }
    
    /* On desktop, we can show info on hover for a faster experience */
    .star:hover .version-info {
        opacity: 1;
    }

    .star:hover::after {
        transform: scale(1.8);
    }

    .star.is-active::after {
        transform: scale(3); /* Slightly larger active state on desktop */
    }
}