:root{color-scheme:dark;font-family:Inter,system-ui,-apple-system,Segoe UI,sans-serif;background-color:#101213;color:#f2f5f7}body,#app{margin:0;min-height:100vh}.app-shell{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:1.5rem;padding:1.5rem;box-sizing:border-box;height:100vh}.preview-stage{position:relative;border-radius:16px;overflow:hidden;background:radial-gradient(circle at center,#282c34cc,#090b0c);box-shadow:0 24px 48px #00000059}.preview-stage{position:relative}.preview-stage video{position:relative;z-index:1;width:100%;height:100%;object-fit:cover;transform:scaleX(-1)}.preview-stage canvas{position:absolute;top:0;right:0;bottom:0;left:0;z-index:2;width:100%;height:100%;pointer-events:none;transform:scaleX(-1)}.sidebar{display:flex;flex-direction:column;padding:1.5rem;border-radius:16px;background:#111517eb;box-shadow:inset 0 0 0 1px #48505752}.sidebar h1{margin:0 0 .5rem;font-size:1.6rem}.sidebar p{color:#a0acb5;margin:0 0 1.25rem}.status-banner{display:flex;align-items:center;gap:.5rem;padding:.6rem .8rem;border-radius:10px;background:#1866442b;color:#70f3c9;margin-bottom:.75rem;font-size:.9rem}.status-banner.error{background:#b02e3633;color:#ff9a9f}.status-banner.warn{background:#c4882433;color:#ffdd9f}.controls-row{display:flex;gap:.5rem;margin-bottom:.75rem;flex-wrap:wrap;align-items:center}.ghost-button{padding:.45rem .9rem;border-radius:10px;background:#0000;border:1px solid rgba(255,255,255,.25);color:#f2f5f7;font-weight:600;cursor:pointer;transition:border-color .2s ease,color .2s ease}.ghost-button:hover,.ghost-button:focus-visible{border-color:#fff9;color:#fff}.ghost-button:disabled{opacity:.4;cursor:not-allowed}@media (max-width: 960px){.app-shell{grid-template-columns:1fr;grid-auto-rows:auto}.sidebar{order:-1}.preview-stage{min-height:60vh}}