* { margin: 0; padding: 0; box-sizing: border-box; }
body { background: #03060a; color: white; font-family: 'Segoe UI', sans-serif; overflow: hidden; height: 100vh; }

/* Nav */
nav { display: flex; justify-content: space-between; padding: 2rem 5%; align-items: center; z-index: 10; }
.logo { font-size: 1.5rem; font-weight: bold; letter-spacing: 2px; }
.logo span { color: #5196ff; }
.nav-links a { margin-right: 2rem; color: #aaa; text-decoration: none; font-size: 0.9rem; }
.nav-btn { background: none; border: 1px solid #5196ff; color: #5196ff; padding: 0.5rem 1rem; cursor: pointer; }

/* Cinematic Horizon Arc */
.earth-container {
    position: absolute;
    bottom: -600px; /* Only show the top part of the ball */
    left: 50%;
    transform: translateX(-50%);
    width: 1400px;
    height: 1400px;
    z-index: 1;
}

.earth-horizon {
    width: 100%; height: 100%;
    border-radius: 50%;
    background-image: url('https://upload.wikimedia.org/wikipedia/commons/c/c4/Earthmap1000x500compac.jpg');
    background-size: cover;
    background-position: center;
    box-shadow: inset 0 0 100px rgba(0,0,0,1), 0 0 50px rgba(81, 150, 255, 0.3);
    animation: rotateEarth 100s linear infinite;
}

@keyframes rotateEarth {
    from { background-position: 0% 50%; }
    to { background-position: 100% 50%; }
}

/* Telemetry Panels */
.telemetry-left { position: absolute; left: 5%; top: 20%; z-index: 5; }
.hud-box { 
    background: rgba(255,255,255,0.05); 
    padding: 1rem; 
    margin-bottom: 1rem; 
    border-left: 2px solid #5196ff;
    font-size: 0.8rem;
    letter-spacing: 1px;
}
.green { color: #00ffcc; }