/* ========================================
   BASE STYLES - Core layout and canvas
   SIMPLIFIED: Two-mode responsive (< 900px contained, ≥ 900px exhibited)
   ======================================== */

/* Prevent page scroll - critical for Android */
html, body {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100vh;
    height: var(--viewport-height, 100vh);
    overflow: hidden;
    touch-action: none;
    background-color: #1a1a1a;
}

body {
    font-family: Arial, sans-serif;
}

canvas {
    display: block;
    touch-action: none;
    width: 100%;
    height: 100%;
}

/* Hidden utility class */
.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}