.lutfs{--bg:#0f1008;--card:#181a0d;--line:#2c2f17;--ink:#f1f2d6;--mute:#a4a78a;--accent:#d8e21b;max-width:920px;margin:0 auto;color:var(--ink);font-family:system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
.lutfs *{box-sizing:border-box}
.lutfs__title{margin:0 0 16px;font-size:1.6rem}
.lutfs__drop{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;min-height:260px;padding:32px 20px;text-align:center;background:var(--card);border:2px dashed var(--line);border-radius:18px;cursor:pointer;transition:border-color .2s,background .2s}
.lutfs__drop:hover,.lutfs__drop.is-over{border-color:var(--accent);background:#1d2010}
.lutfs__drop-icon{display:grid;place-items:center;width:56px;height:56px;border-radius:50%;background:var(--accent);color:#14160a;font-size:2rem;line-height:1;font-weight:300}
.lutfs__drop-title{font-size:1.2rem;font-weight:600}
.lutfs__drop-sub{max-width:420px;color:var(--mute);font-size:.92rem}
.lutfs__error{margin:12px 0 0;padding:12px 14px;border-radius:10px;background:#3a1612;color:#ffb9ad;font-size:.92rem}
.lutfs__stage{display:grid;gap:18px;grid-template-columns:1fr}
@media(min-width:820px){.lutfs__stage{grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);align-items:start}}
.lutfs__canvas-wrap{position:relative;background:#000;border-radius:16px;overflow:hidden;border:1px solid var(--line)}
.lutfs canvas{display:block;width:100%;height:auto;max-height:72vh;object-fit:contain;margin:0 auto}
.lutfs__busy{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;padding:24px;background:rgba(10,11,4,.78);text-align:center;font-weight:600}
.lutfs__bar{width:min(320px,80%);height:8px;border-radius:99px;background:var(--line);overflow:hidden}
.lutfs__bar i{display:block;width:0;height:100%;background:var(--accent);transition:width .2s linear}
.lutfs__panel{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px}
.lutfs__row{display:grid;gap:6px;margin-bottom:14px}
.lutfs__row label{font-size:.85rem;color:var(--mute)}
.lutfs input[type=range]{width:100%;accent-color:var(--accent)}
.lutfs__actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
.lutfs__btn{flex:1 1 auto;padding:12px 16px;border:0;border-radius:12px;background:var(--accent);color:#14160a;font:inherit;font-weight:700;cursor:pointer;touch-action:manipulation;user-select:none}
.lutfs__btn:hover{filter:brightness(1.06)}
.lutfs__btn:disabled{opacity:.5;cursor:not-allowed}
.lutfs__btn--ghost{background:transparent;color:var(--ink);border:1px solid var(--line)}
.lutfs__note{margin:14px 0 0;color:var(--mute);font-size:.82rem;line-height:1.5}
.lutfs [hidden]{display:none!important}