/* ringworld.quest - Sci-Fi Megastructure Explorer */
* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
    --void-black: #030308;
    --deep-space: #0A1A28;
    --ring-blue: #4A90D0;
    --approach-green: #40C080;
    --star-gold: #FFD040;
    --hull-gray: #6888A0;
    --light-mist: #E0E8F0;
    --bright-mist: #E8F0FF;
}
body {
    background: var(--void-black);
    color: var(--light-mist);
    font-family: 'Rajdhani', sans-serif;
    font-weight: 400;
    overflow-x: hidden;
}

/* Star Field */
#star-field {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(1px 1px at 10% 20%, rgba(255,255,255,0.6) 0%, transparent 100%),
        radial-gradient(1px 1px at 30% 60%, rgba(255,255,255,0.4) 0%, transparent 100%),
        radial-gradient(1px 1px at 50% 10%, rgba(255,255,255,0.5) 0%, transparent 100%),
        radial-gradient(1px 1px at 70% 40%, rgba(255,255,255,0.3) 0%, transparent 100%),
        radial-gradient(1px 1px at 90% 80%, rgba(255,255,255,0.6) 0%, transparent 100%),
        radial-gradient(1px 1px at 15% 85%, rgba(255,255,255,0.4) 0%, transparent 100%),
        radial-gradient(1px 1px at 45% 75%, rgba(255,255,255,0.5) 0%, transparent 100%),
        radial-gradient(1px 1px at 80% 15%, rgba(255,255,255,0.3) 0%, transparent 100%),
        radial-gradient(1.5px 1.5px at 60% 50%, rgba(255,208,64,0.4) 0%, transparent 100%),
        radial-gradient(1px 1px at 25% 45%, rgba(255,255,255,0.5) 0%, transparent 100%);
}

/* Distance Counter */
#distance-counter {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 10;
    text-align: right;
}
.dist-label {
    display: block;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.65rem;
    color: var(--hull-gray);
    letter-spacing: 0.15em;
    opacity: 0.5;
}
.dist-value {
    display: block;
    font-family: 'Share Tech Mono', monospace;
    font-size: 1rem;
    color: var(--approach-green);
    opacity: 0.8;
}

/* Scenes */
.scene {
    position: relative;
    z-index: 1;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 4rem 2rem;
}
.horizon-curve {
    position: absolute;
    bottom: 10%;
    left: 0;
    width: 100%;
    height: 100px;
    z-index: 0;
}
.scene-content {
    position: relative;
    z-index: 1;
    max-width: 700px;
    text-align: center;
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 1s ease, transform 1s ease;
}
.scene-content.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Typography */
.display-title {
    font-size: clamp(2rem, 5vw, 4rem);
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--bright-mist);
    text-shadow: 0 0 40px rgba(74,144,208,0.2);
}
.hero-sub {
    font-size: 1rem;
    color: var(--hull-gray);
    margin-top: 0.75rem;
}
.section-title {
    font-size: clamp(1.5rem, 3.5vw, 2.5rem);
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--star-gold);
    margin-bottom: 1.5rem;
}
.section-body {
    font-size: 1rem;
    line-height: 1.75;
    color: var(--light-mist);
    opacity: 0.85;
}
.data-label {
    display: inline-block;
    margin-top: 1.5rem;
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.85rem;
    color: var(--approach-green);
    opacity: 0.5;
}

/* Section backgrounds */
#approach { background: radial-gradient(ellipse at center 60%, rgba(74,144,208,0.04) 0%, transparent 50%); }
#structure { background: radial-gradient(ellipse at center, rgba(74,144,208,0.03) 0%, transparent 50%); }
#surface { background: radial-gradient(ellipse at center, rgba(64,192,128,0.03) 0%, transparent 50%); }
#builders { background: radial-gradient(ellipse at center, rgba(255,208,64,0.03) 0%, transparent 50%); }
#landing { background: radial-gradient(ellipse at center, rgba(64,192,128,0.05) 0%, transparent 50%); }

/* Footer */
#footer {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 4rem 2rem;
}
.footer-text {
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.75rem;
    color: var(--hull-gray);
    opacity: 0.3;
}

@media (max-width: 600px) {
    .scene { padding: 3rem 1.5rem; }
}