:root{--bg:#0b1020;--panel:#111936;--muted:#94a3b8;--text:#e6eefc;--accent:#3b82f6;--good:#22c55e}*{box-sizing:border-box}html,body{height:100%}body{margin:0;background:var(--bg);color:var(--text);font-family:ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,Apple Color Emoji,Segoe UI Emoji}.container{max-width:1200px;margin:0 auto;padding:16px}.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.title{margin:0;font-size:20px;letter-spacing:.5px}.back{background:#334155;color:#fff;border:0;border-radius:8px;padding:8px 12px;cursor:pointer}.content{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:16px;align-items:start}@media (max-width:980px){.content{grid-template-columns:1fr}}.container{height:100vh}.editor{background:var(--panel);border-radius:12px;padding:12px;position:relative}.canvas-wrap{position:relative;display:flex;justify-content:center;align-items:center;min-width:300px}canvas{width:100%;height:auto;max-width:100%;border-radius:8px;background:#000;touch-action:pan-y pinch-zoom}.canvas-wrap{touch-action:pan-y pinch-zoom}.file-input{display:flex;align-items:center;justify-content:center;gap:8px;background:var(--accent);padding:16px;border-radius:10px;color:#fff;cursor:pointer;font-weight:700;font-size:16px;width:100%}.file-input input{display:none}#uploadBtnWrap[data-mode=download]{background:var(--good);color:#052e10}.zoom-control{display:flex;flex-direction:column;gap:8px;margin-top:8px}.zoom-row{display:flex;align-items:center;gap:8px}.zoom-row .spacer{flex:1}.zoom-control input[type=range]{width:100%}.zoom-control button{background:#334155;color:#fff;border:0;border-radius:6px;padding:6px 10px;cursor:pointer}.form{background:var(--panel);border-radius:12px;padding:14px;max-height:calc(100vh - 120px);overflow:auto}.section-title{margin:0 0 8px}.photo-controls{display:flex;flex-direction:column;gap:8px}.bg-tools{margin-top:6px;display:flex;flex-direction:column;gap:6px}.toggle{display:flex;align-items:center;gap:8px;color:var(--text)}.toggle.small{font-size:12px;color:var(--muted)}.toggle input{accent-color:var(--accent)}.status{font-size:12px;color:var(--muted);min-height:16px}.mask-controls{display:flex;flex-direction:column;gap:6px;background:#0f172a;border:1px solid #1f2a44;border-radius:8px;padding:8px}.mask-row{display:flex;align-items:center;gap:10px;justify-content:space-between;color:var(--muted);font-size:12px}.mask-row input[type=range]{flex:1;margin-left:8px}.threshold-controls{display:flex;align-items:center;gap:8px}.btn-muted.small{padding:4px 8px;font-size:12px}#thrValue{min-width:42px;text-align:center;color:#e6eefc;font-weight:700}.toggle-btn[aria-pressed=true]{background:#16a34a}.toggle-btn{transition:background-color .2s}.btn-accent{background:var(--accent);color:#fff;border:0;border-radius:8px;padding:8px 12px;cursor:pointer;font-weight:700}.spinner{width:22px;height:22px;border:3px solid rgba(255,255,255,.25);border-top-color:#fff;border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.layout-tools{display:flex;gap:8px;align-items:center;margin-top:8px}.btn-muted{background:#334155;color:#fff;border:0;border-radius:6px;padding:6px 10px;cursor:pointer}.grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:10px;margin-bottom:12px}.field{display:flex;flex-direction:column;gap:6px}label{font-size:13px;color:var(--muted)}input,select{background:#0f172a;color:#fff;border:1px solid #1f2a44;border-radius:8px;padding:10px 12px;width:100%;max-width:100%}.grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px}@media (max-width:560px){.grid{grid-template-columns:1fr}}.stats h3{margin:8px 0 12px}.stats-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.stats-grid label{display:flex;align-items:center;justify-content:space-between;gap:10px;background:#0f172a;border:1px solid #1f2a44;border-radius:8px;padding:8px 10px}.stats-grid input{width:72px;text-align:center}.overall-row{margin-top:12px;display:flex;align-items:center;justify-content:space-between}.overall-label{color:var(--muted);margin-right:8px}.overall-value{font-size:28px;font-weight:800;color:#fff;padding:4px 10px;background:#0f172a;border:1px solid #1f2a44;border-radius:10px}.download{background:var(--good);color:#052e10;border:0;border-radius:10px;padding:10px 14px;cursor:pointer;font-weight:700}.download{display:flex;align-items:center;justify-content:center;width:100%;padding:16px;border-radius:10px;font-weight:700;font-size:16px}