/* Cinematic Hero Section Styles */
:root {
    --hero-bg: #020408;
    --hero-text: #ffffff;
    --hero-subtitle: #b3eff6;
    --hero-glow: rgba(59, 130, 246, 0.4);
    --star-opacity: 0.5;
}

.light :root {
    --hero-bg: #f8fafc; /* Lighter slate bg */
    --hero-text: #0f172a;
    --hero-subtitle: #475569;
    --hero-glow: rgba(14, 165, 233, 0.2);
    --star-opacity: 0; /* Hide stars in light mode */
}

#cinematic-hero {
    position: relative;
    width: 100%;
    min-height: 100vh;
    background-color: var(--hero-bg);
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--hero-text);
    transition: background-color 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

#starfield {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    opacity: var(--star-opacity);
    transition: opacity 0.8s ease;
}

.earth-container {
    position: absolute;
    bottom: -15%;
    width: 120%;
    left: -10%;
    z-index: 2;
    pointer-events: none;
    transition: transform 0.1s ease-out; /* Parallax speed */
}

.earth-img {
    width: 100%;
    height: auto;
    filter: drop-shadow(0 0 50px var(--hero-glow));
    transition: opacity 0.8s ease, filter 0.8s ease;
}

.earth-dark { display: block; }
.earth-light { display: none; }

.light .earth-dark { display: none; }
.light .earth-light { display: block; }

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 800px;
    text-align: center;
    padding: 2rem;
}

.hero-title {
    font-size: clamp(2.5rem, 8vw, 5.5rem);
    font-weight: 950;
    color: var(--hero-text);
    line-height: 1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.04em;
    transition: color 0.8s ease;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.4rem);
    color: var(--hero-subtitle);
    margin-bottom: 2.5rem;
    font-weight: 400;
    max-width: 600px;
    margin-inline: auto;
    transition: color 0.8s ease;
}

/* Star styles for JS */
.star {
    position: absolute;
    background: #fff;
    border-radius: 50%;
    opacity: 0.5;
    pointer-events: none;
}

@keyframes earth-drift {
    from { transform: translate(0, 0) scale(1); }
    to { transform: translate(1%, 2%) scale(1.02); }
}

@keyframes twinkle {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

@media (max-width: 768px) {
    .earth-container {
        bottom: -10%;
        width: 180%;
        left: -40%;
    }
    .hero-title {
        font-size: 2.8rem;
    }
}
@media (max-width: 480px) {
    .earth-container {
        bottom: -5%;
        width: 220%;
        left: -60%;
    }
}