body {
    margin: 0;
    padding: 0;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: #000;
    color: #fff;
}

#solarCanvas {
    display: block;
    background: radial-gradient(ellipse at center, #0a0a0a 0%, #000000 100%);
}

.planet-control {
    background: rgba(55, 65, 81, 0.3);
    border: 1px solid rgba(75, 85, 99, 0.5);
    border-radius: 8px;
    padding: 12px;
    transition: all 0.2s ease;
}

.planet-control:hover {
    background: rgba(55, 65, 81, 0.5);
    border-color: rgba(75, 85, 99, 0.7);
}

.planet-control.active {
    background: rgba(59, 130, 246, 0.2);
    border-color: rgba(59, 130, 246, 0.6);
}

.planet-name {
    font-weight: 600;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.planet-color {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.mass-slider {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: rgba(75, 85, 99, 0.5);
    outline: none;
    -webkit-appearance: none;
}

.mass-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #3b82f6;
    cursor: pointer;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.mass-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #3b82f6;
    cursor: pointer;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.mass-value {
    font-family: 'Monaco', 'Menlo', monospace;
    font-size: 12px;
    background: rgba(31, 41, 55, 0.8);
    padding: 4px 8px;
    border-radius: 4px;
    min-width: 60px;
    text-align: center;
}

.zoom-slider {
    width: 100%;
    height: 6px;
    border-radius: 3px;
    background: rgba(75, 85, 99, 0.5);
    outline: none;
    -webkit-appearance: none;
}

.zoom-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #10b981;
    cursor: pointer;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.zoom-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #10b981;
    cursor: pointer;
    border: 2px solid rgba(255, 255, 255, 0.3);
}

button {
    transition: all 0.2s ease;
}

button:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

button:active {
    transform: translateY(0);
}

#infoPanel {
    max-width: 300px;
    font-size: 12px;
    line-height: 1.4;
}

.planet-info-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 4px;
}

.planet-info-label {
    color: #9ca3af;
}

.planet-info-value {
    color: #f3f4f6;
    font-weight: 500;
}

@media (max-width: 1024px) {
    .w-80 {
        width: 280px;
    }
}

@media (max-width: 768px) {
    .w-80 {
        width: 100%;
        max-width: none;
    }
    
    .flex-1.flex {
        flex-direction: column;
    }
}