html { background: #000; }
        body { margin: 0; padding: 0; background: #000; display: flex; justify-content: center; align-items: center; min-height: 100vh; overflow: hidden; }
        body:fullscreen, html:fullscreen { background: inherit; }
        #stageShell { position: relative; line-height: 0; background: #000; }
        canvas { border: 1px solid #F0FF00; display: block; box-sizing: border-box; touch-action: none; }
        #timer { position: absolute; bottom: 20px; right: 20px; color: #F0FF00; font-family: monospace; font-size: 16px; }
        #audioStatus {
            position: absolute;
            bottom: 42px;
            right: 20px;
            color: #F0FF00;
            font-family: monospace;
            font-size: 12px;
            opacity: 0.82;
        }
        #startButton {
            display: none !important;
        }
        #startButton:hover { background: #F0FF00; color: #000; }
        #startButton.hidden { display: none; }
    
        .uiButton, .mobileButton {
            background: #000;
            color: #F0FF00;
            border: 1px solid #F0FF00;
            font-family: monospace;
            cursor: pointer;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            line-height: 1;
            box-sizing: border-box;
        }
        #mobileWarning {
            position: absolute;
            inset: 0;
            z-index: 120;
            background: rgba(0, 0, 0, 0.92);
            color: #F0FF00;
            border: 1px solid #F0FF00;
            box-sizing: border-box;
            font-family: monospace;
            line-height: 1.35;
            padding: 28px;
            text-align: center;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        #mobileWarning[hidden] { display: none; }
        #mobileWarning h1 {
            font-size: 20px;
            letter-spacing: 4px;
            margin: 0 0 18px 0;
            font-weight: normal;
        }
        #mobileWarning p {
            font-size: 13px;
            max-width: 520px;
            margin: 0 auto 18px auto;
        }
        #mobileWarning .mobileActions {
            display: flex;
            gap: 12px;
            justify-content: center;
            flex-wrap: wrap;
        }
        .mobileButton {
            font-size: 13px;
            letter-spacing: 2px;
            padding: 8px 14px;
        }
        .compact-profile #audioStatus,
        .compact-profile #timer {
            display: none !important;
        }