.card{background:var(--card);border-radius:var(--radius);box-shadow:0 1px 6px #00000012;padding:16px;margin-bottom:16px}.fmt-hint{font-size:11px;color:var(--sub);margin-top:6px;text-align:center}.upload-area{border:2px dashed var(--border);border-radius:14px;padding:64px 24px;text-align:center;cursor:pointer;transition:border-color .2s,background .2s;background:var(--card-alt)}.upload-area:hover,.upload-area.drag-over{border-color:var(--primary);background:var(--primary-muted)}.upload-icon{font-size:56px;margin-bottom:14px;color:var(--sub)}.upload-title{font-size:16px;font-weight:600;color:var(--text);margin-bottom:6px}.upload-sub{font-size:13px;color:var(--sub)}.editor-layout{display:grid;grid-template-columns:300px 1fr;gap:16px;align-items:start}.left-panel{padding:14px 16px}.panel-label{font-size:11px;font-weight:700;color:var(--sub);letter-spacing:.5px;text-transform:uppercase;margin-bottom:8px}.panel-label.mt{margin-top:14px}.video-info{font-size:12px;color:var(--sub);line-height:1.7;margin-bottom:4px;word-break:break-all}.slider-row{display:flex;align-items:center;gap:8px}.slider-row input[type=range]{flex:1;accent-color:var(--primary)}.slider-hint{font-size:11px;color:var(--sub);white-space:nowrap}.slider-val-row{font-size:12px;font-weight:700;color:var(--primary);margin-top:4px}.charset-opts{display:flex;flex-direction:column;gap:6px}.radio-opt{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text);cursor:pointer}.radio-opt input[type=radio]{accent-color:var(--primary)}.custom-input{width:100%;margin-top:8px;border:2px solid var(--border);border-radius:8px;padding:7px 10px;font-size:13px;font-family:monospace;outline:none;background:var(--card);color:var(--text);transition:border-color .2s}.custom-input:focus{border-color:var(--primary)}.mode-row{display:flex;gap:6px}.mode-btn{flex:1;padding:7px 6px;border-radius:8px;border:2px solid var(--border);background:transparent;font-size:12px;font-weight:600;color:var(--sub);cursor:pointer;transition:all .15s}.mode-btn:hover{border-color:var(--primary);color:var(--primary)}.mode-btn.active{border-color:var(--primary);background:var(--primary-muted);color:var(--primary)}.toggle-row{display:flex;align-items:center;gap:8px;cursor:pointer;user-select:none}.toggle-row input[type=checkbox]{display:none}.toggle-switch{width:36px;height:20px;border-radius:10px;background:var(--border);position:relative;transition:background .2s;flex-shrink:0}.toggle-switch:after{content:"";position:absolute;width:14px;height:14px;border-radius:50%;background:#fff;top:3px;left:3px;transition:left .2s;box-shadow:0 1px 3px #0003}.toggle-row input:checked~.toggle-switch{background:var(--primary)}.toggle-row input:checked~.toggle-switch:after{left:19px}.toggle-label{font-size:13px;color:var(--text)}.actions{margin-top:16px;display:flex;flex-direction:column;gap:8px}.btn-primary,.dl-btn{display:block;width:100%;text-align:center;text-decoration:none;background:linear-gradient(135deg,var(--primary),var(--primary-end));color:#fff;border:none;border-radius:10px;padding:12px 18px;font-size:14px;font-weight:700;cursor:pointer;transition:filter .15s;box-sizing:border-box}.btn-primary:hover,.dl-btn:hover{filter:brightness(1.08)}.btn-primary:disabled{opacity:.5;cursor:not-allowed;filter:none}.btn-ghost{width:100%;background:transparent;color:var(--sub);border:1.5px solid var(--border);border-radius:10px;padding:9px 8px;font-size:13px;font-weight:600;cursor:pointer;transition:all .15s}.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}.btn-reset{width:100%;background:transparent;color:var(--sub);border:1.5px solid var(--border);border-radius:10px;padding:9px 8px;font-size:13px;cursor:pointer;transition:all .15s}.btn-reset:hover{border-color:var(--sub);color:var(--text)}.output-card{padding:0;overflow:hidden;display:flex;flex-direction:column;min-height:480px}.output-header{display:flex;align-items:center;justify-content:space-between;padding:12px 16px;border-bottom:1px solid var(--border)}.preview-video,.result-video{width:100%;height:100%;max-height:440px;object-fit:contain;background:#000;display:block}#previewWrap,#resultWrap{flex:1;display:flex;background:#000;min-height:440px}#progressWrap{flex:1;display:flex;align-items:center;justify-content:center;padding:40px}.progress-inner{width:100%;max-width:360px;text-align:center}.prog-icon{font-size:40px;margin-bottom:14px;animation:spin 2s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.prog-text{font-size:15px;font-weight:700;color:var(--text);margin-bottom:16px}.progress-bar-wrap{height:8px;background:var(--border);border-radius:4px;overflow:hidden;margin-bottom:10px}.progress-bar{height:100%;background:var(--primary);border-radius:4px;transition:width .2s}.prog-sub{font-size:12px;color:var(--sub);margin-bottom:20px}.btn-cancel{background:transparent;color:var(--sub);border:1.5px solid var(--border);border-radius:8px;padding:6px 20px;font-size:13px;cursor:pointer;transition:all .15s}.btn-cancel:hover{border-color:#e53;color:#e53}@media(max-width:760px){.editor-layout{grid-template-columns:1fr}.output-card{min-height:300px}#previewWrap,#resultWrap{min-height:220px}.preview-video,.result-video{max-height:280px}}@media(max-width:600px){input[type=range]{touch-action:none}.btn-primary,.dl-btn,.btn-ghost,.btn-reset{min-height:44px}}