.cam-box{position:relative;min-height:240px}.cam-box canvas{background:#111}.cam-empty{position:absolute;top:0;right:0;bottom:0;left:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:16px;text-align:center}.cam-empty .readout{max-width:420px;margin:0;color:#fff;text-shadow:0 1px 3px rgba(0,0,0,.7)}.cam-actions{justify-content:center}.cam-actions .btn{min-width:200px}.panel .fthumb:not(:has(canvas)){padding:14px 4px}