:root {
    --bg-dark: #050505;
    --crt-intensity: 0.4;
}

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

body {
    background: var(--bg-dark);
    font-family: -apple-system, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    overflow: hidden;
    user-select: none;
    -webkit-user-select: none;
    touch-action: none;
}

#vector-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 10;
}

#hidden-input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
    z-index: 1;
}

/* ── CRT Overlays ──────────────────────────────────────── */
.scanlines {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(
        to bottom,
        rgba(18, 16, 16, 0) 50%,
        rgba(0, 0, 0, 0.2) 50%
    );
    background-size: 100% 4px;
    z-index: 1000;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.vignette {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: radial-gradient(
        circle,
        rgba(0, 0, 0, 0) 40%,
        rgba(0, 0, 0, 0.75) 100%
    );
    z-index: 1001;
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.3s ease;
}

body.crt-active .scanlines,
body.crt-active .vignette {
    opacity: var(--crt-intensity, 0.4);
}