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

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #0A0515;
    font-family: 'Inter', sans-serif;
    -webkit-tap-highlight-color: transparent;
    touch-action: none;
}

#canvas {
    display: block;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

#ui-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

@keyframes glow {
    0%, 100% { filter: drop-shadow(0 0 10px rgba(0,245,255,0.5)); }
    50% { filter: drop-shadow(0 0 20px rgba(0,245,255,0.8)); }
}

/* Prevent text selection */
* {
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}