:root {
    --primary-color: rgba(255, 255, 255, 0.9);
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
}

body {
    margin: 0;
    overflow: hidden;
    background-color: #000;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

#ui-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none; /* Let clicks pass through to canvas */
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    padding: 2rem;
    box-sizing: border-box;
}

h1 {
    color: var(--primary-color);
    font-weight: 300;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    font-size: 1.5rem;
    margin: 0;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

.controls-hint {
    align-self: flex-end;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--glass-border);
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    line-height: 1.6;
    max-width: 300px;
}

.controls-hint p {
    margin: 0.5rem 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.controls-hint p::before {
    content: '';
    display: block;
    width: 6px;
    height: 6px;
    background-color: rgba(255, 255, 255, 0.4);
    border-radius: 50%;
}

canvas {
    display: block;
    width: 100vw;
    height: 100vh;
}