:root{--bg: #14161a;--surface: #1d2026;--surface-raised: #23272e;--border: #2c313a;--paper: #f5f3ee;--ink: #eceae4;--muted: #8b8f99;--accent: #3ddc97;--accent-dim: #2a9d6f;--accent-alt: #ffb020;--danger: #ff6b6b;--font-display: "Space Grotesk", system-ui, sans-serif;--font-mono: "JetBrains Mono", ui-monospace, monospace}*{box-sizing:border-box}html,body,#root{height:100%}body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font-display)}.app-shell{min-height:100%;display:flex;flex-direction:column;align-items:center;padding:28px 20px 40px}.app-header{width:100%;max-width:720px;display:flex;align-items:baseline;justify-content:space-between;padding-bottom:22px;border-bottom:1px solid var(--border);margin-bottom:28px}.brand{display:flex;align-items:center;gap:10px}.brand-mark{color:var(--accent);font-size:14px;letter-spacing:2px;font-family:var(--font-mono)}.brand-name{font-size:22px;font-weight:700;letter-spacing:-.02em}.brand-tag{font-family:var(--font-mono);font-size:12px;color:var(--muted);letter-spacing:.04em}.app-main{width:100%;max-width:720px;flex:1}.app-footer{margin-top:32px;font-family:var(--font-mono);font-size:11px;color:var(--muted);display:flex;gap:10px;letter-spacing:.03em}.app-footer .divider{color:var(--border)}.dropzone{border:1px dashed var(--border);border-radius:10px;background:var(--surface)}.dropzone-inner{padding:72px 24px;display:flex;flex-direction:column;align-items:center;text-align:center;cursor:pointer;transition:background .15s ease;border-radius:10px}.dropzone-inner:hover{background:var(--surface-raised)}.scan-icon{margin-bottom:18px}.dropzone-title{font-size:18px;font-weight:600;margin:0 0 6px}.dropzone-sub{font-size:13px;color:var(--muted);margin:0;max-width:360px}.adjust-stage{display:flex;flex-direction:column;gap:16px}.frame{position:relative;width:100%;background:#000;border-radius:10px;overflow:hidden;border:1px solid var(--border);-webkit-user-select:none;user-select:none}.frame-img{width:100%;display:block;pointer-events:none}.corner-overlay{position:absolute;top:0;left:0;pointer-events:none}.corner-poly{fill:#3ddc9724;stroke:var(--accent);stroke-width:2}.corner-handle{position:absolute;width:22px;height:22px;margin-left:-11px;margin-top:-11px;border-radius:50%;background:var(--accent);border:3px solid var(--bg);box-shadow:0 0 0 1px var(--accent);cursor:grab}.corner-handle:active{cursor:grabbing}.hint{font-size:12px;color:var(--muted);font-family:var(--font-mono);margin:0}.scan-sweep{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;overflow:hidden}.scan-sweep:after{content:"";position:absolute;left:0;right:0;height:3px;background:linear-gradient(90deg,transparent,var(--accent) 20%,var(--accent) 80%,transparent);box-shadow:0 0 12px 2px #3ddc97b3;animation:sweep 1.6s ease-in-out infinite}@keyframes sweep{0%{top:0%;opacity:0}10%{opacity:1}90%{opacity:1}to{top:100%;opacity:0}}.preview-stage{display:flex;flex-direction:column;gap:16px}.filter-tabs{display:flex;gap:6px;background:var(--surface);padding:5px;border-radius:8px;border:1px solid var(--border);width:fit-content}.filter-tab{font-family:var(--font-mono);font-size:12px;letter-spacing:.03em;padding:8px 14px;border-radius:6px;border:none;background:transparent;color:var(--muted);cursor:pointer;transition:background .15s ease,color .15s ease}.filter-tab:hover{color:var(--ink)}.filter-tab.active{background:var(--accent);color:#0b1410;font-weight:600}.preview-image-wrap{position:relative;border-radius:10px;overflow:hidden;background:var(--paper);border:1px solid var(--border);display:flex;justify-content:center}.preview-image{max-width:100%;display:block}.processing-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:#14161a8c;color:var(--ink);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;font-family:var(--font-mono);font-size:12px;z-index:2}.error-text{color:var(--danger);font-size:13px;font-family:var(--font-mono)}.adjust-actions{display:flex;gap:10px}.btn{font-family:var(--font-display);font-size:14px;font-weight:600;padding:11px 20px;border-radius:8px;border:1px solid transparent;cursor:pointer;transition:transform .1s ease,background .15s ease,border-color .15s ease}.btn:active{transform:scale(.97)}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--accent);color:#0b1410}.btn-primary:hover:not(:disabled){background:var(--accent-dim)}.btn-ghost{background:transparent;border-color:var(--border);color:var(--ink)}.btn-ghost:hover{border-color:var(--muted)}@media (max-width: 560px){.app-header{flex-direction:column;align-items:flex-start;gap:4px}.dropzone-inner{padding:48px 16px}}