.app-header{display:flex;align-items:center;justify-content:space-between;gap:var(--space-3);padding:var(--space-3) var(--space-4);border-bottom:1px solid var(--surface-2);background:linear-gradient(180deg,rgba(22,41,61,.6),transparent)}.header-actions{display:flex;align-items:center;gap:var(--space-3)}.app-main{flex:1;display:grid;grid-template-columns:1fr;gap:var(--space-3);padding:var(--space-3);min-height:0}@media (min-width: 960px){.app-main{grid-template-columns:minmax(0,65fr) minmax(320px,35fr);padding:var(--space-3) var(--space-4) var(--space-4)}}.wordmark{font-family:var(--font-display);font-weight:700;font-size:22px;letter-spacing:-.02em;color:var(--text);display:inline-flex;align-items:center;gap:var(--space-2)}.wordmark .grid-glyph{width:18px;height:18px;border:2px solid var(--accent);border-radius:3px;position:relative;box-shadow:0 0 12px #4fd1ff59}.wordmark .grid-glyph:before,.wordmark .grid-glyph:after{content:"";position:absolute;background:var(--accent)}.wordmark .grid-glyph:before{left:50%;top:0;bottom:0;width:2px;transform:translate(-50%)}.wordmark .grid-glyph:after{top:50%;left:0;right:0;height:2px;transform:translateY(-50%)}.viewer{position:relative;background:linear-gradient(rgba(79,209,255,.04) 1px,transparent 1px) 0 0 / 24px 24px,linear-gradient(90deg,rgba(79,209,255,.04) 1px,transparent 1px) 0 0 / 24px 24px,var(--surface-1);border:1px solid var(--surface-2);border-radius:var(--radius-md);min-height:60vh;display:flex;align-items:center;justify-content:center;overflow:auto;padding:var(--space-3);transition:border-color var(--duration-ui) var(--ease-out)}.viewer.dragover{border-color:var(--accent);box-shadow:inset 0 0 0 1px var(--accent),0 0 24px #4fd1ff26}.stage{position:relative;align-self:flex-start;margin:0 auto;line-height:0;filter:drop-shadow(0 8px 24px rgba(0,0,0,.45))}.page-canvas{display:block;border-radius:2px}.overlay-canvas{position:absolute;top:0;right:0;bottom:0;left:0;touch-action:none}.overlay-canvas.dragging{cursor:grabbing}.scanline{position:absolute;top:0;right:0;bottom:0;left:0;pointer-events:none;opacity:0}.scanline.sweeping{animation:sweep .7s var(--ease-out) 1}.scanline.sweeping:after{content:"";position:absolute;left:0;right:0;height:64px;background:linear-gradient(180deg,transparent,rgba(79,209,255,.35),transparent);border-bottom:1px solid var(--accent);animation:sweep-line .7s var(--ease-out) 1}@keyframes sweep{0%,90%{opacity:1}to{opacity:0}}@keyframes sweep-line{0%{transform:translateY(-64px)}to{transform:translateY(100%)}}@media (prefers-reduced-motion: reduce){.scanline.sweeping,.scanline.sweeping:after{animation:none}}.dropzone{display:flex;flex-direction:column;align-items:center;gap:var(--space-2);text-align:center;padding:var(--space-6) var(--space-4);max-width:46ch;border:1.5px dashed var(--surface-2);border-radius:var(--radius-md);transition:border-color var(--duration-ui) var(--ease-out)}.viewer.dragover .dropzone{border-color:var(--accent)}.dropzone-glyph{width:44px;height:44px;margin-bottom:var(--space-2);border:2px solid var(--accent);border-radius:4px;background:linear-gradient(var(--accent),var(--accent)) 0 50% / 100% 2px no-repeat,linear-gradient(var(--accent),var(--accent)) 50% 0 / 2px 100% no-repeat;opacity:.8}.dropzone[data-state=loading] .dropzone-glyph{animation:pulse 1.2s ease-in-out infinite}.dropzone[data-state=error] .dropzone-glyph{border-color:var(--danger);background:linear-gradient(var(--danger),var(--danger)) 0 50% / 100% 2px no-repeat,linear-gradient(var(--danger),var(--danger)) 50% 0 / 2px 100% no-repeat}.dropzone[data-state=error] .dropzone-title{color:var(--danger)}@keyframes pulse{50%{opacity:.3}}@media (prefers-reduced-motion: reduce){.dropzone[data-state=loading] .dropzone-glyph{animation:none}}.dropzone-title{font-family:var(--font-display);font-size:20px;margin:0;color:var(--text)}.dropzone-detail{margin:0 0 var(--space-2);color:var(--text-muted);font-size:13px;line-height:1.6}.sidebar{background:linear-gradient(180deg,var(--surface-1),rgba(16,31,48,.7));border:1px solid var(--surface-2);border-radius:var(--radius-md);padding:var(--space-3);display:flex;flex-direction:column;gap:var(--space-3);min-height:0;overflow:auto}.sidebar-header{display:flex;align-items:center;justify-content:space-between;gap:var(--space-2)}.sidebar h2{font-family:var(--font-display);font-size:16px;margin:0}.sidebar-status{margin:0;font-size:12px;color:var(--text-muted);letter-spacing:.02em}.sidebar-status[data-tone=error]{color:var(--danger)}.region-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:var(--space-2)}.region-item{display:flex;align-items:stretch;gap:1px;background:var(--surface-2);border-radius:var(--radius-sm);overflow:hidden;border:1px solid transparent;transition:border-color var(--duration-ui) var(--ease-out),transform var(--duration-ui) var(--ease-out)}.region-item:hover{border-color:#4fd1ff66;transform:translate(2px)}.region-item[data-active=true]{border-color:var(--accent-support);box-shadow:inset 3px 0 0 var(--accent-support)}.region-select{flex:1;display:flex;align-items:center;gap:var(--space-2);min-height:44px;padding:var(--space-2) var(--space-3);background:none;border:none;color:var(--text);text-align:left;cursor:pointer;font-size:13px}.region-name{font-weight:600}.region-dims{flex:1;color:var(--text-muted);font-size:11px}.region-confidence{font-size:11px;padding:2px 6px;border-radius:3px;background:#4fd1ff1f;color:var(--accent)}.region-confidence[data-level=medium]{background:#ff8a3d24;color:var(--accent-support)}.region-confidence[data-level=low]{background:#f8717124;color:var(--danger)}.region-discard{width:44px;background:none;border:none;color:var(--text-muted);font-size:18px;line-height:1;cursor:pointer;transition:background var(--duration-ui) var(--ease-out),color var(--duration-ui) var(--ease-out)}.region-discard:hover{background:#f8717126;color:var(--danger)}.region-discard:active{transform:scale(.92)}.preview{display:flex;flex-direction:column;gap:var(--space-2);min-height:0}.preview-header{display:flex;align-items:center;gap:var(--space-2);padding-top:var(--space-2);border-top:1px solid var(--surface-2)}.preview-header h3{font-family:var(--font-display);font-size:14px;margin:0}.preview-shape{flex:1;font-size:11px;color:var(--text-muted)}.preview-scroll{overflow:auto;max-height:44vh;border:1px solid var(--surface-2);border-radius:var(--radius-sm)}.preview-table{border-collapse:collapse;width:100%;font-size:12px}.preview-table th{position:sticky;top:0;padding:0;background:var(--surface-2);text-align:left;z-index:1}.preview-table td{padding:var(--space-2);border-top:1px solid rgba(127,151,171,.15);color:var(--text);white-space:nowrap}.preview-table td[data-empty=true]:after{content:"—";color:var(--text-muted);opacity:.5}.preview-table tbody tr:hover td{background:#4fd1ff0f}.sort-header{display:flex;align-items:center;gap:var(--space-1);width:100%;min-height:36px;padding:var(--space-2);background:none;border:none;color:var(--text-muted);font-size:11px;font-weight:600;letter-spacing:.04em;text-transform:uppercase;text-align:left;cursor:pointer;transition:color var(--duration-ui) var(--ease-out)}.sort-header:hover,.sort-header[data-direction]{color:var(--accent)}.sort-arrow{opacity:.4;transition:opacity var(--duration-ui) var(--ease-out)}.sort-header:hover .sort-arrow,.sort-header[data-direction] .sort-arrow{opacity:1}.empty-state{display:flex;flex-direction:column;align-items:center;gap:var(--space-1);text-align:center;padding:var(--space-5) var(--space-3);border:1px dashed var(--surface-2);border-radius:var(--radius-sm)}.empty-glyph{width:28px;height:28px;margin-bottom:var(--space-1);border:1.5px solid var(--surface-2);border-radius:3px;background:linear-gradient(var(--surface-2),var(--surface-2)) 0 50% / 100% 1.5px no-repeat,linear-gradient(var(--surface-2),var(--surface-2)) 50% 0 / 1.5px 100% no-repeat}.empty-title{margin:0;font-family:var(--font-display);font-size:13px;color:var(--text)}.empty-detail{margin:0;font-size:11px;color:var(--text-muted);max-width:34ch;line-height:1.6}.pager{display:flex;align-items:center;gap:var(--space-1)}.pager-label{font-size:12px;color:var(--text-muted);min-width:11ch;text-align:center}button.primary,button.ghost{border-radius:var(--radius-sm);font-weight:600;font-size:12px;cursor:pointer;min-height:36px;padding:0 var(--space-3);transition:transform var(--duration-ui) var(--ease-out),box-shadow var(--duration-ui) var(--ease-out),background var(--duration-ui) var(--ease-out),color var(--duration-ui) var(--ease-out)}button.primary{background:var(--accent);color:var(--bg);border:none}button.primary:hover:not(:disabled){box-shadow:0 0 0 3px #4fd1ff40}button.ghost{background:transparent;color:var(--text);border:1px solid var(--surface-2)}button.ghost:hover:not(:disabled){border-color:var(--accent);color:var(--accent)}button.primary:active:not(:disabled),button.ghost:active:not(:disabled){transform:translateY(1px)}button.primary:disabled,button.ghost:disabled{opacity:.4;cursor:not-allowed}.pager button.ghost{min-width:36px;padding:0;font-size:16px}@media (max-width: 959px){.app-header{flex-wrap:wrap;padding:var(--space-3)}.viewer{min-height:60vh}.preview-scroll{max-height:none}}@media (max-width: 959px),(pointer: coarse){button.primary,button.ghost{min-height:44px}.pager button.ghost{min-width:44px}}@media (max-width: 420px){.header-actions{width:100%;justify-content:space-between}}