:root{color-scheme:light;--bg:#f7faff;--panel:#fff;--text:#111b34;--muted:#526480;--line:#dce6f5;--blue:#1260ff;font:14px Inter,"Segoe UI",Arial,sans-serif;background:var(--bg);color:var(--text)}*{box-sizing:border-box}body{margin:0}.scan-app{max-width:1170px;margin:auto;padding:0 28px}header{display:flex;align-items:center;justify-content:space-between;gap:20px;min-height:92px;border-bottom:1px solid var(--line)}.scan-brand{font-size:27px;font-weight:750;letter-spacing:-1px;text-decoration:none;color:var(--text)}.scan-brand span{color:var(--blue)}.scan-top{display:flex;gap:20px;align-items:center}a{color:var(--blue)}.scan-top a{font-size:13px;text-decoration:none}.coffee{background:#fff0f1;padding:11px 14px;border-radius:10px;color:#d82b3c}.scan-lang{margin:0}.scan-lang select{padding:8px;border:0;background:none}.scan-intro{text-align:center;padding:35px 0 25px}.eyebrow{font-size:11px;letter-spacing:1.8px;color:var(--blue);font-weight:650}h1{font-size:36px;letter-spacing:-1.1px;margin:13px 0 12px}h2{font-size:17px;font-weight:650;margin:0}p{color:var(--muted);line-height:1.65}.hint{font-size:12px;line-height:1.65;color:var(--muted);margin:10px 0}button,input,select{font:inherit}button,select,input[type=text]{border:1px solid var(--line);border-radius:8px;background:var(--panel);color:var(--text);padding:10px 12px}button{cursor:pointer;font-weight:550}button:disabled{opacity:.45;cursor:default}.primary{background:var(--blue);border-color:var(--blue);color:#fff}.scan-source,.scan-editor,.scan-pages,.scan-export{background:var(--panel);border:1px solid var(--line);border-radius:15px;padding:22px}.source-actions{display:flex;justify-content:center;flex-wrap:wrap;gap:12px}.source-actions+ .hint{text-align:center;margin-bottom:0}.file-button{display:inline-flex;align-items:center;position:relative;border:1px solid var(--line);border-radius:8px;background:var(--panel);padding:11px 15px;cursor:pointer;font-weight:550;margin:0}.file-button input{position:absolute;inset:0;opacity:0;width:100%;height:100%;cursor:pointer}.file-button:focus-within{outline:3px solid #86adff;outline-offset:2px}#scanCameraArea{max-width:620px;margin:20px auto 0}video{display:block;max-width:100%;width:100%;max-height:460px;border-radius:10px;background:#101827}.camera-actions{display:flex;justify-content:center;gap:10px;margin-top:12px}#scanStatus{margin:14px 0;min-height:22px}#scanError{background:#fff0f1;border:1px solid #f2bdc7;color:#a22c3b;padding:13px;border-radius:9px}.scan-workspace{display:grid;grid-template-columns:210px minmax(0,1fr);gap:18px;align-items:start}.panel-heading{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-bottom:12px}.panel-heading>span{font-size:12px;color:var(--muted)}.page-list{display:grid;gap:10px}.page-thumb{display:flex;align-items:center;gap:10px;text-align:left;overflow:hidden;width:100%}.page-thumb[aria-pressed=true]{border-color:var(--blue);background:#eef4ff}.page-thumb img{width:43px;height:57px;object-fit:contain;border-radius:3px;background:#eaf0f8}.page-thumb span{font-size:12px;overflow-wrap:anywhere}.preview-surround{background:#eaf0f8;border-radius:10px;padding:18px;display:flex;justify-content:center}.preview-frame{position:relative;max-width:420px;width:100%;background:#fff;line-height:0;box-shadow:0 3px 18px #233a6412}#scanCanvas{display:block;width:100%;height:auto}#scanCropBox{position:absolute;border:2px solid #1260ff;box-shadow:0 0 0 1px #ffffff88;pointer-events:none}#scanCropBox button{position:absolute;width:28px;height:28px;border:3px solid white;border-radius:50%;background:#1260ff;padding:0;pointer-events:auto;touch-action:none;box-shadow:0 1px 5px #18284240}#scanCropBox [data-corner=tl]{left:-14px;top:-14px;cursor:nwse-resize}#scanCropBox [data-corner=tr]{right:-14px;top:-14px;cursor:nesw-resize}#scanCropBox [data-corner=bl]{left:-14px;bottom:-14px;cursor:nesw-resize}#scanCropBox [data-corner=br]{right:-14px;bottom:-14px;cursor:nwse-resize}.edit-controls{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-top:16px}.edit-controls label{font-size:12px;display:flex;align-items:center;gap:7px}.edit-controls input[type=range]{max-width:120px;accent-color:var(--blue)}.danger{color:#b43348}.scan-export{margin-top:20px}.export-options{display:flex;gap:12px;align-items:flex-end;flex-wrap:wrap;margin-top:18px}.export-options label{display:grid;gap:7px;font-size:12px;flex:1;min-width:160px}.export-options button{min-height:41px}.download-link{display:inline-flex;margin-top:18px;background:#ecf7ee;padding:12px 18px;border-radius:8px;color:#216b3f;font-weight:600}footer{display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap;margin:25px 0;font-size:11px;line-height:1.7;color:var(--muted)}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}:focus-visible{outline:3px solid #81aaff;outline-offset:3px}[hidden]{display:none!important}html[data-color-mode=dark]{color-scheme:dark;--bg:#101727;--panel:#17243a;--text:#edf3ff;--muted:#b4c4df;--line:#344765;--blue:#75a6ff}html[data-color-mode=dark] .primary{background:#367aff;color:white}html[data-color-mode=dark] .preview-surround{background:#0c1524}html[data-color-mode=dark] .page-thumb[aria-pressed=true]{background:#233d63}html[data-color-mode=dark] #scanError{background:#3b2330;color:#ffc3ce;border-color:#805063}@media(max-width:700px){.scan-app{padding:0 18px}header{flex-wrap:wrap;padding:19px 0;gap:15px}.scan-brand{font-size:24px}.scan-top{gap:13px;flex-wrap:wrap}h1{font-size:29px}.scan-intro{padding:27px 0 20px}.scan-workspace{grid-template-columns:1fr}.page-list{display:flex;flex-wrap:wrap;gap:8px}.page-thumb{width:auto;max-width:145px}.scan-source,.scan-editor,.scan-pages,.scan-export{padding:17px}.edit-controls{gap:10px}.edit-controls label{flex-wrap:wrap}.source-actions{gap:9px}.source-actions button,.file-button{padding:11px 12px;font-size:12px}.export-options button{flex:1}.preview-surround{padding:18px}.scan-pages .page-list{max-height:235px;overflow:auto}.coffee{font-size:12px!important}}

/* Larger document workspace and a visible return path on every screen. */
:root{font-size:16px}
.scan-app{width:100%;max-width:1440px;padding:0 clamp(18px,3vw,48px)}
.scan-navigation{display:flex;justify-content:flex-start;padding:20px 0 0}
.scan-back{display:inline-flex;align-items:center;gap:10px;min-height:44px;padding:10px 17px;border:1px solid var(--line);border-radius:9px;background:var(--panel);color:var(--text);font-size:15px;font-weight:650;text-decoration:none}
.scan-back:hover{border-color:var(--blue);color:var(--blue)}
.scan-intro{padding:28px 0}.scan-intro p{font-size:16px}
.scan-source{padding:30px 24px}.source-actions button,.file-button{min-height:46px;font-size:15px}
.scan-workspace{grid-template-columns:230px minmax(0,1fr);gap:22px}
.preview-frame{max-width:760px}.preview-surround{padding:24px}
.edit-controls label,.export-options label{font-size:14px}
.hint{font-size:14px}#scanCameraArea{max-width:900px}video{max-height:650px}
@media(max-width:700px){.scan-app{padding:0 18px}.scan-workspace{grid-template-columns:1fr}.scan-navigation{padding-top:16px}.scan-back{font-size:14px}.scan-source{padding:22px 17px}.source-actions button,.file-button{font-size:14px}.preview-surround{padding:17px}.scan-intro p{font-size:15px}}