/* App layout. Primitives live in base.css; values come from tokens.css. */
html, body { overflow: hidden; }
body { display: grid; grid-template-rows: var(--size-topbar) 1fr; height: 100dvh; }
[hidden] { display: none !important; }
.topbar { z-index: 3; }
.tabs { overflow: hidden; }
.doctab { max-width: 320px; }
.doctab .fname { overflow: hidden; text-overflow: ellipsis; }

/* Start screen (S01) */
.start { display: grid; place-items: center; align-content: center; gap: var(--sp-6); padding: var(--sp-8) 16px; background: var(--bg); overflow: auto; }
.recent { width: min(560px, 100%); }
.ms-custom { display: grid; grid-template-columns: 1fr auto 1fr auto; gap: var(--sp-2); align-items: center; }
.ms-custom .input { min-width: 0; }
#stScale.none { color: var(--warning, #b45309); }
.recent h2 { margin: 0 0 var(--sp-3); font-size: var(--fs-sm); color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; }
.recent ul { list-style: none; margin: 0; padding: 0; border: 1px solid var(--border); border-radius: var(--r-md); background: var(--surface); }
.recent li { display: flex; align-items: center; gap: var(--sp-3); padding: 0 var(--sp-2) 0 var(--sp-4); min-height: 40px; }
.recent li + li { border-top: 1px solid var(--border); }
.recent .open { flex: 1; min-width: 0; text-align: left; background: none; border: 0; padding: var(--sp-3) 0; color: var(--text); font: inherit; cursor: pointer; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.recent .open:hover { color: var(--accent); }
.recent .when { color: var(--text-muted); font-size: var(--fs-sm); white-space: nowrap; }
.drop { width: min(560px, 100%); padding: 48px 24px; border: 2px dashed var(--border-strong); border-radius: var(--r-lg); background: var(--surface); text-align: center; display: grid; justify-items: center; gap: var(--sp-5); transition: border-color var(--motion-fast), background var(--motion-fast); }
.drop.over { border-color: var(--accent); background: var(--accent-wash); }
.drop h1 { margin: 0; font-size: var(--fs-xl); }
.drop p { margin: 0; color: var(--text-muted); max-width: 40ch; }
.drop .ico.big { width: 40px; height: 40px; color: var(--text-muted); }
.err { color: var(--danger); font-size: var(--fs-sm); }

/* Workspace (S02) */
.workspace { display: grid; grid-template-rows: auto auto 1fr var(--dock-h, 200px) var(--size-status-bar); min-height: 0; }
.toolbar { gap: var(--sp-1); }
.toolbar .zoom-label { min-width: 58px; font-variant-numeric: tabular-nums; }
.props { overflow-x: auto; white-space: nowrap; }
.props .group { display: flex; align-items: center; gap: var(--sp-3); }
.props .hint { color: var(--text-muted); }
.props .colors { display: flex; gap: var(--sp-2); }
.props .colors button { width: 20px; height: 20px; }

.main { display: flex; min-height: 0; min-width: 0; }
.main .viewport { flex: 1; min-width: 0; }
.side { width: var(--size-dock-side); flex: none; display: flex; flex-direction: column; min-height: 0; background: var(--surface); border-left: 1px solid var(--border); }
.side .panel-tabs { align-items: center; padding-right: var(--sp-2); }
.side-body { overflow: auto; flex: 1; padding-bottom: var(--sp-6); }
.workspace.side-closed .side { display: none; }
#sideToggle[aria-pressed="true"] { color: var(--accent-text); }
.side .lrow .lactive { font-size: 11px; color: var(--accent-text); }
.side .lrow.active .lname::before { content: none; }
.side .lfoot { display: flex; gap: var(--sp-3); padding: var(--sp-5) var(--sp-4); }
.side .empty.sm { padding: var(--sp-3) var(--sp-5); text-align: left; }
#measurePanel { padding: var(--sp-5); display: grid; gap: var(--sp-5); align-content: start; }
#measurePanel .lsec { padding: var(--sp-3) 0 0; }
.ms-card { border: 1px solid var(--border-strong); border-radius: var(--r-md); padding: var(--sp-5); display: grid; gap: var(--sp-2); background: var(--bg); }
.ms-card.warn { border-color: var(--warning); }
.ms-card .muted { font-size: var(--fs-xs); }
.ms-scale { font-size: var(--fs-lg); font-weight: 600; }
.ms-card.warn .ms-scale { color: var(--warning); }
.ms-actions { display: flex; gap: var(--sp-3); margin-top: var(--sp-2); }
.ms-two { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-4); }
.ms-tools { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-2); }
.ms-tools .btn { justify-content: flex-start; }
.ms-tools .btn.on { background: var(--accent-wash); border-color: var(--accent); color: var(--accent-text); }
.ms-totals { display: grid; grid-template-columns: auto 1fr; gap: var(--sp-2) var(--sp-5); margin: 0; font-size: var(--fs-sm); }
.ms-totals dt { color: var(--text-muted); }
.ms-totals dd { margin: 0; text-align: right; font-weight: 600; }
.layer-menu { position: fixed; z-index: 30; width: 240px; }
@media (max-width: 900px) { .side { position: absolute; right: 0; top: 0; bottom: 0; z-index: 4; box-shadow: var(--shadow-pop); } .main { position: relative; } }
.viewport { position: relative; overflow: auto; background: var(--canvas); outline: none; touch-action: none; }
.viewport.panning, .viewport.panning * { cursor: grab !important; }
.viewport.grabbing, .viewport.grabbing * { cursor: grabbing !important; }
.workspace[data-tool="rect"] .viewport, .workspace[data-tool="cloud"] .viewport, .workspace[data-tool="callout"] .viewport { cursor: crosshair; }
.workspace[data-tool="pan"] .viewport { cursor: grab; }
.pages { display: flex; flex-direction: column; align-items: center; gap: var(--sp-6); padding: var(--sp-6); width: max-content; min-width: 100%; }
.pagebox { position: relative; background: var(--paper); box-shadow: var(--shadow-page); flex: none; }
.pagebox canvas.raster { position: absolute; inset: 0; width: 100%; height: 100%; display: block; }
.pagebox svg.overlay { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.pagebox .pagelabel { position: absolute; left: 0; top: calc(-1 * var(--sp-5)); font-size: var(--fs-xs); color: var(--text-muted); transform: translateY(-2px); }
.pagebox.render-error { outline: 2px dashed var(--danger); }
.overlay g.mk { cursor: move; }
/* Any tool but Select: markups don't take the pointer (the tool draws over them). */
.pages.no-hit .overlay .l-markups, .pages.no-hit .overlay .l-markups * { pointer-events: none; cursor: inherit; }
.overlay .l-live, .overlay .l-preview, .overlay .l-extra { pointer-events: none; }
.overlay .handle { cursor: pointer; }
.callout-editor { position: absolute; z-index: 2; margin: 0; border: 1px dashed var(--select); background: rgba(255,255,255,.92); color: #111; resize: none; padding: 0; outline: none; font-family: Helvetica, Arial, sans-serif; line-height: 1.2; overflow: hidden; }

.pdftext-editor { position: absolute; z-index: 3; border: 1px solid var(--select); border-radius: 2px; background: #fff; color: #000; padding: 0 2px;
  font-family: Helvetica, Arial, sans-serif; box-shadow: 0 0 0 3px rgba(31,111,235,.25); outline: none; }
.workspace[data-tool="edittext"] .viewport { cursor: text; }

/* Bottom dock: markups list (S04) */
.dock-bottom { position: relative; display: flex; flex-direction: column; min-height: 0; border-top: 1px solid var(--border); background: var(--surface); }
.dock-resize { position: absolute; left: 0; right: 0; top: -4px; height: 8px; cursor: ns-resize; z-index: 2; }
.dock-resize:focus-visible { outline-offset: -3px; }
.markups { display: flex; flex-direction: column; min-height: 0; flex: 1; }
.markups .panel-head .count { font-weight: 400; }
.ml-head { gap: var(--sp-3); overflow-x: auto; flex: none; }
.ml-head .select { height: 26px; font-weight: 400; max-width: 150px; }
.ml-search { display: flex; align-items: center; gap: var(--sp-2); color: var(--text-muted); }
.ml-search .input { height: 26px; width: 180px; font-weight: 400; }
.ml-search .ico { width: 15px; height: 15px; }
.mlist { table-layout: fixed; }
.mlist td { overflow: hidden; text-overflow: ellipsis; }
.mlist .ico { width: 13px; height: 13px; vertical-align: -2px; margin-right: 4px; }
.mlist .ml-status { height: 20px; padding: 0 4px; font-size: var(--fs-xs); border-color: var(--border); background: transparent; width: 100%; }
.ml-check { width: 18px; height: 18px; border: 1px solid var(--border-input); border-radius: var(--r-sm); background: var(--surface); color: var(--success); font-weight: 700; line-height: 1; padding: 0; cursor: pointer; }
.mlist tr.grouprow td { background: var(--bg); font-size: var(--fs-xs); cursor: pointer; }
.mlist tr.spacer td { padding: 0; border: 0; }
.ml-menu { position: fixed; z-index: 30; }
.markups .table-wrap { overflow: auto; flex: 1; }
.mlist tbody tr { cursor: pointer; }
.mlist tbody tr:focus-visible { outline: 2px solid var(--focus); outline-offset: -2px; }
.mlist td.comments { max-width: 420px; overflow: hidden; text-overflow: ellipsis; }
.mlist tr.readonly { color: var(--text-muted); cursor: default; }
.mlist .dot:not([style]) { border: 1px solid var(--border-strong); }

.statusbar { gap: var(--sp-6); }

/* Comments thread (S14) */
.thread { position: fixed; z-index: 15; width: 320px; max-height: min(480px, 80vh); overflow: auto; display: grid; gap: var(--sp-4); padding: var(--sp-5);
  background: var(--surface); border: 1px solid var(--border-strong); border-radius: var(--r-lg); box-shadow: var(--shadow-pop); font-size: var(--fs-sm); }
.thread .th-head { display: flex; align-items: center; gap: var(--sp-3); }
.thread .th-head .muted { font-size: var(--fs-xs); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.thread .th-row { display: flex; align-items: end; gap: var(--sp-5); }
.thread .th-check { display: flex; align-items: center; gap: var(--sp-2); height: 28px; }
.thread .th-by { font-size: var(--fs-xs); margin-top: calc(-1 * var(--sp-3)); }
.thread textarea.th-text { height: auto; padding: var(--sp-3) var(--sp-4); resize: vertical; width: 100%; font-family: inherit; }
.thread .th-replies { display: grid; gap: var(--sp-3); }
.thread .th-reply { border-left: 2px solid var(--border-strong); padding-left: var(--sp-4); }
.thread .th-reply .muted { display: flex; align-items: center; gap: var(--sp-2); font-size: var(--fs-xs); }
.thread .th-reply .th-del { margin-left: auto; height: 20px; padding: 0 4px; }
.thread .th-new { display: grid; gap: var(--sp-3); justify-items: end; }

/* Toasts */
.toast-host { position: fixed; left: 50%; bottom: calc(var(--size-status-bar) + 16px); transform: translateX(-50%); display: grid; gap: 8px; z-index: 20; pointer-events: none; }
.toast-host .toast { pointer-events: auto; }
.toast.error { background: var(--danger); color: #fff; }

dialog.dialog { padding: 0; color: var(--text); }
dialog.dialog::backdrop { background: rgba(0,0,0,.35); }

@media (max-width: 640px) {
  .topbar { gap: var(--sp-2); padding: 0 var(--sp-4); }
  #saveBtn span { display: none; }
  #saveBtn { width: 32px; padding: 0; }
  .brand .name { display: none; }
  .tabs { display: none; }
  .workspace { --dock-h: 140px; }
}
.pagebox .tiles { position: absolute; inset: 0; overflow: hidden; pointer-events: none; }
.pagebox .tiles canvas.tile { position: absolute; display: block; }

/* Left dock: page thumbnails (S03) */
.leftside { display: none; width: 168px; flex: none; flex-direction: column; min-height: 0; background: var(--surface); border-right: 1px solid var(--border); }
.workspace.left-open .leftside { display: flex; }
#leftToggle[aria-pressed="true"] { color: var(--accent-text); }
.leftside .panel-tabs { align-items: center; padding-right: var(--sp-2); }
.thumbs { overflow: auto; height: 100%; padding: var(--sp-5) 0; display: grid; justify-items: center; gap: var(--sp-5); align-content: start; }
.thumb { display: grid; gap: var(--sp-2); padding: 4px; border-radius: var(--r-sm); cursor: pointer; border: 2px solid transparent; }
.thumb canvas { background: var(--paper); box-shadow: var(--shadow-card); display: block; }
.thumb[aria-selected="true"] { border-color: var(--accent); }
.thumb:focus-visible { outline: 2px solid var(--focus); outline-offset: 1px; }
.thumb .tlabel { display: flex; justify-content: space-between; font-size: var(--fs-xs); color: var(--text-muted); }
.thumb .tcount { background: var(--accent-wash); color: var(--accent-text); border-radius: var(--r-pill); padding: 0 6px; }
.thumb .tcount:empty { display: none; }
@media (max-width: 900px) { .leftside { position: absolute; left: 0; top: 0; bottom: 0; z-index: 4; box-shadow: var(--shadow-pop); } }

/* Properties panel (S07) */
#propsPanel { padding: var(--sp-5); display: grid; gap: var(--sp-5); align-content: start; }
#propsPanel fieldset { border: 0; padding: 0; margin: 0; display: grid; gap: var(--sp-4); min-width: 0; }
#propsPanel textarea.input { height: auto; padding: var(--sp-3) var(--sp-4); resize: vertical; font-family: inherit; }
.pp-title { font-weight: 600; font-size: var(--fs-lg); }
.pp-facts { display: grid; grid-template-columns: auto 1fr; gap: var(--sp-2) var(--sp-5); margin: 0; font-size: var(--fs-sm); }
.pp-facts dt { color: var(--text-muted); }
.pp-facts dd { margin: 0; overflow-wrap: anywhere; }
.pp-hint { font-size: var(--fs-sm); margin: 0; }

/* Go to page + search (S15) */
.pagebox-input { display: flex; align-items: center; gap: var(--sp-2); }
.pagebox-input .input { width: 64px; height: 26px; text-align: center; }
.pagebox-input .muted { font-size: var(--fs-xs); white-space: nowrap; }
#searchPanel { display: flex; flex-direction: column; min-height: 0; }
#searchPanel[hidden] { display: none; }
.sr-form { padding: var(--sp-4); display: grid; gap: var(--sp-3); border-bottom: 1px solid var(--border); }
.sr-form .ml-search .input { width: 100%; }
.sr-nav { display: flex; align-items: center; font-size: var(--fs-xs); }
#srPrev .ico { transform: rotate(180deg); }
.sr-list { overflow: auto; flex: 1; }
.sr-hit { padding: var(--sp-3) var(--sp-4); font-size: var(--fs-sm); border-bottom: 1px solid var(--border); cursor: pointer; overflow-wrap: anywhere; }
.sr-hit:hover { background: var(--surface-2); }
.sr-hit[aria-selected="true"] { background: var(--accent-wash); }
.sr-hit mark { background: rgba(255,140,0,.35); color: inherit; }
.leftside .panel-tabs [role="tab"] { padding: var(--sp-3) var(--sp-3); }
.workspace.left-open .leftside { width: 220px; }

/* Tool Chest (S06) */
#toolsPanel { padding: 0 var(--sp-4) var(--sp-6); }
#toolsPanel .lsec { padding-left: 0; }
.tc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: var(--sp-3); }
.tc-tile { position: relative; border: 1px solid var(--border); border-radius: var(--r-md); background: var(--surface); }
.tc-tile.on { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent); }
.tc-use { width: 100%; border: 0; background: none; display: grid; justify-items: center; gap: 2px; padding: var(--sp-3) var(--sp-2); cursor: pointer; font-size: var(--fs-xs); color: var(--text); }
.tc-use svg { background: var(--paper); border-radius: var(--r-sm); }
.tc-use span { max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tc-acts { position: absolute; top: 2px; right: 2px; display: none; gap: 0; }
.tc-tile:hover .tc-acts, .tc-tile:focus-within .tc-acts { display: flex; }
.tc-acts .btn { width: 22px; height: 22px; background: var(--surface); }
.tc-row { display: flex; gap: var(--sp-3); padding: var(--sp-4) 0; }

/* Viewports in the Measure panel */
.vp-row { display: grid; grid-template-columns: 1fr 120px auto auto; gap: var(--sp-2); align-items: center; }
.vp-row .vp-name { justify-content: flex-start; overflow: hidden; text-overflow: ellipsis; }
.vp-row .select { height: 26px; }

/* Page tools + bookmarks */
.pg-tools { display: flex; flex-wrap: wrap; gap: 2px; padding: var(--sp-3) var(--sp-3); border-bottom: 1px solid var(--border); }
#thumbsPanel { display: flex; flex-direction: column; min-height: 0; }
#thumbsPanel[hidden] { display: none; }
#thumbsPanel .thumbs { flex: 1; height: auto; }
#bookmarksPanel { padding: var(--sp-3) var(--sp-2); }
.bm-tree ul { list-style: none; margin: 0; padding-left: var(--sp-5); }
.bm-tree > ul { padding-left: 0; }
.bm-tree li > ul { display: none; }
.bm-tree li.open > ul { display: block; }
.bm-tree li { display: block; }
.bm-tg { display: inline-block; width: 16px; border: 0; background: none; color: var(--text-muted); cursor: pointer; padding: 0; font-size: 10px; transition: transform var(--motion-fast); }
.bm-tree li.open > .bm-tg { transform: rotate(90deg); }
.bm-item { border: 0; background: none; text-align: left; padding: 3px 4px; border-radius: var(--r-sm); cursor: pointer; font-size: var(--fs-sm); color: var(--text); max-width: calc(100% - 20px); }
.bm-item:hover { background: var(--surface-2); }
.bm-item:disabled { color: var(--text-muted); cursor: default; }