* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #000;
}

#skycommand-canvas {
    width: 100%;
    height: 100%;
    display: block;
}

#loading {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #0a0a0a;
    color: #00ff00;
    font-family: 'Courier New', Courier, monospace;
    font-size: 18px;
    z-index: 1000;
}

.spinner {
    width: 48px;
    height: 48px;
    border: 3px solid #003300;
    border-top-color: #00ff00;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.error {
    color: #ff4444;
    font-size: 16px;
    text-align: center;
    padding: 20px;
    max-width: 500px;
}