.remove-bg-app{margin:34px 0 44px;border:1px solid var(--line);background:var(--surface);border-radius:24px;padding:clamp(18px,3vw,30px);box-shadow:0 14px 44px rgba(29,31,65,.07)}
.remove-bg-app-head{display:flex;justify-content:space-between;gap:20px;align-items:flex-start;margin-bottom:22px}.remove-bg-app-head h2{margin:5px 0 4px;font-size:clamp(25px,3vw,34px)}.remove-bg-app-head p{margin:0;color:var(--muted)}.ai-badge{white-space:nowrap;padding:9px 12px;border-radius:999px;background:var(--accent);color:var(--primary);font-weight:850;font-size:12px}
.upload-zone{border:2px dashed color-mix(in srgb,var(--primary) 35%,var(--line));background:color-mix(in srgb,var(--accent) 45%,var(--surface));border-radius:20px;min-height:250px;padding:28px;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;gap:8px;transition:.2s ease;outline:none}.upload-zone:hover,.upload-zone:focus-visible,.upload-zone.dragover{border-color:var(--primary);background:var(--accent);box-shadow:0 0 0 4px rgba(91,92,240,.08)}.upload-icon{width:56px;height:56px;border-radius:18px;display:grid;place-items:center;background:var(--primary);color:#fff;font-size:28px;font-weight:900;margin-bottom:5px}.upload-zone>strong{font-size:20px}.upload-zone>span:not(.upload-icon){color:var(--muted);font-size:13px}.choose-file,.secondary-action{border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:12px;padding:11px 15px;font-weight:800}.choose-file{margin-top:8px;color:var(--primary)}
.file-summary{margin-top:14px;border:1px solid var(--line);border-radius:14px;padding:12px 14px;display:flex;align-items:center;justify-content:space-between;gap:14px}.file-summary div{min-width:0}.file-summary strong,.file-summary span{display:block}.file-summary strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.file-summary span{font-size:12px;color:var(--muted);margin-top:2px}.file-summary button{border:0;background:transparent;color:var(--primary);font-weight:800}
.compare-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-top:18px}.compare-grid figure{margin:0}.compare-grid figcaption{font-size:12px;font-weight:850;color:var(--muted);text-transform:uppercase;letter-spacing:.08em;margin:0 0 7px}.preview-surface{min-height:320px;border:1px solid var(--line);border-radius:18px;background:var(--surface-2);display:grid;place-items:center;overflow:hidden;padding:10px}.preview-surface.checker{background-color:#fff;background-image:linear-gradient(45deg,#e9e9ef 25%,transparent 25%),linear-gradient(-45deg,#e9e9ef 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#e9e9ef 75%),linear-gradient(-45deg,transparent 75%,#e9e9ef 75%);background-size:24px 24px;background-position:0 0,0 12px,12px -12px,-12px 0}.preview-surface img{display:block;max-width:100%;max-height:420px;object-fit:contain}.result-placeholder{text-align:center;color:#6f7185;background:rgba(255,255,255,.82);border-radius:14px;padding:18px}.result-placeholder span{font-size:30px;color:var(--primary)}.result-placeholder p{margin:4px 0 0}
.advanced-panel{margin-top:18px;border:1px solid var(--line);border-radius:16px;background:var(--surface-2);overflow:hidden}.advanced-panel summary{cursor:pointer;padding:15px 17px;font-weight:850;list-style:none}.advanced-panel summary::-webkit-details-marker{display:none}.advanced-panel summary:after{content:'+';float:right;color:var(--primary);font-size:20px}.advanced-panel[open] summary:after{content:'−'}.advanced-panel summary span{font-size:11px;color:var(--muted);font-weight:650;margin-left:7px}.advanced-grid{border-top:1px solid var(--line);padding:16px;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px}.advanced-grid label{display:flex;flex-direction:column;gap:6px}.advanced-grid label>span{font-size:13px;font-weight:800}.advanced-grid select,.advanced-grid input[type="file"],.advanced-grid input[type="color"]{width:100%;border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:11px;padding:10px}.advanced-grid input[type="color"]{height:44px;padding:4px}.advanced-grid small{color:var(--muted);font-size:11px}.advanced-grid .check-row{flex-direction:row;align-items:flex-start;border:1px solid var(--line);border-radius:12px;padding:12px;background:var(--surface)}.check-row input{margin-top:3px}.check-row span{display:block}.check-row strong,.check-row small{display:block}.advanced-grid input[type="range"]{width:100%}
.format-warning,.privacy-note{margin-top:14px;border-radius:12px;padding:12px 14px;font-size:12px}.format-warning{background:#fff7df;border:1px solid #f0d588;color:#755a00}.privacy-note{background:var(--surface-2);border:1px solid var(--line);color:var(--muted)}.privacy-note a{color:var(--primary);font-weight:750}
.action-row{display:flex;gap:10px;align-items:center;margin-top:18px}.process-button{border:0;background:linear-gradient(135deg,var(--primary),var(--primary-2));color:#fff;border-radius:13px;padding:13px 18px;font-weight:900;box-shadow:0 10px 22px rgba(91,92,240,.22)}.process-button:disabled{opacity:.48;cursor:not-allowed;box-shadow:none}.processing-status{margin-top:12px}.processing-status p{margin:7px 0 0;color:var(--muted);font-size:13px}.progress-track{height:5px;border-radius:999px;background:var(--line);overflow:hidden}.progress-track span{display:block;width:40%;height:100%;border-radius:inherit;background:var(--primary);animation:removeBgProgress 1.1s ease-in-out infinite}@keyframes removeBgProgress{0%{transform:translateX(-110%)}100%{transform:translateX(350%)}}
.download-panel{margin-top:16px;border:1px solid color-mix(in srgb,#15956a 40%,var(--line));background:color-mix(in srgb,#eafbf3 72%,var(--surface));border-radius:15px;padding:14px;display:flex;align-items:center;justify-content:space-between;gap:14px}.download-panel strong,.download-panel span{display:block}.download-panel span{font-size:12px;color:var(--muted);margin-top:2px}.download-button{background:#168e5f;color:#fff;border-radius:11px;padding:11px 15px;font-weight:850;white-space:nowrap}
@media(max-width:760px){.remove-bg-app-head{display:block}.ai-badge{display:inline-block;margin-top:10px}.compare-grid,.advanced-grid{grid-template-columns:1fr}.preview-surface{min-height:240px}.action-row,.download-panel{align-items:stretch;flex-direction:column}.action-row button,.download-button{text-align:center;width:100%}}