:root {
    --bg-color-deep: #050505; /* Very dark background */
    --text-color-primary: #00FFC0; /* Neon green/aqua */
    --text-color-secondary: #A0A0A0; /* Grey for general info */
    --accent-color-glow: #FF00FF; /* Magenta for glows */
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Roboto Mono', monospace;
    background-color: var(--bg-color-deep);
    overflow: hidden; /* Hide scrollbars as canvas fills screen */
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    color: var(--text-color-primary); /* Default text color */
}

/* Canvas Styling */
#wordCanvas {
    display: block; /* Remove extra space below canvas */
    background-color: var(--bg-color-deep); /* Ensure canvas background is consistent */
    position: absolute; /* Position to fill viewport */
    top: 0;
    left: 0;
    z-index: 0; /* Behind overlay */
}

/* Header Overlay */
.header-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%); /* Center it */
    text-align: center;
    z-index: 1; /* Above canvas */
    padding: 20px;
    background: rgba(0, 0, 0, 0.6); /* Semi-transparent background */
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 255, 192, 0.5);
    pointer-events: none; /* Allow clicks to pass through to canvas */
    animation: pulseGlow 3s infinite alternate ease-in-out;
}

@keyframes pulseGlow {
    from { box-shadow: 0 0 15px rgba(0, 255, 192, 0.4); }
    to { box-shadow: 0 0 30px rgba(0, 255, 192, 0.8); }
}

.header-overlay h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 3em;
    color: var(--accent-color-glow);
    text-shadow: 0 0 10px var(--accent-color-glow);
    margin-bottom: 10px;
    text-transform: uppercase;
}

.header-overlay p {
    font-size: 1.2em;
    color: var(--text-color-secondary);
}

/* Responsive adjustments for overlay */
@media (max-width: 768px) {
    .header-overlay h1 {
        font-size: 2em;
    }
    .header-overlay p {
        font-size: 1em;
    }
}

@media (max-width: 480px) {
    .header-overlay h1 {
        font-size: 1.5em;
    }
    .header-overlay p {
        font-size: 0.9em;
    }
    .header-overlay {
        width: 90%;
    }
}