/*
THESIS: A pre-press light table, not an upload form. The teacher's source lies on backlit glass; the typeset proof registers against it. Refuses the category default of a white SaaS wizard with cards.
OWN-WORLD: Graphite desk (K), one white paper surface (proofs), process-ink hairlines — cyan acts, magenta conflicts, yellow checks. Registration targets, crop marks, mm-ruled glass. State as line form: dashed / solid / doubled.
STORY: Teacher drops screenshots → watches each page scanned and questions register → resolves flags beside the source → arranges and exports Word.
FIRST VIEWPORT: Full-bleed glass table with drop target at the scale of an A4 sheet, registration marks at corners; samples laid on the table as proof sheets beside it.
FORM: pre-press light table (#3 of grounded list), fused with emission-line state grammar. Seed ae5c0844.
*/
:root {
  --k-0: #0b0d10; --k-1: #111419; --k-2: #181c23; --k-3: #242a33; --k-4: #333a45;
  --bone: #ebe8e1; --bone-2: #a9a69e; --bone-3: #7d7b75;
  --paper: #fbfaf7; --paper-2: #f1efe9; --ink: #16181c; --ink-2: #4a4d54;
  --c: #35d0f5; --c-dim: rgba(53, 208, 245, .16); --c-ink: #0a6f8a;
  --m: #ff3d9a; --m-dim: rgba(255, 61, 154, .14); --m-ink: #b0165f;
  --y: #f5d93b; --y-dim: rgba(245, 217, 59, .14); --y-ink: #7d6800;
  --ui: "Schibsted Grotesk", system-ui, sans-serif;
  --mono: "Azeret Mono", ui-monospace, monospace;
  --serif: "Tinos", "Times New Roman", serif;
  --ease: cubic-bezier(.16, 1, .3, 1);
  --bar: 56px;
  color-scheme: dark;
}
* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0; background: var(--k-0); color: var(--bone);
  font: 400 14px/1.45 var(--ui); -webkit-font-smoothing: antialiased;
  overflow: hidden;
}
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
:focus-visible { outline: 2px solid var(--c); outline-offset: 2px; }
[hidden] { display: none !important; }
.mono { font-family: var(--mono); font-feature-settings: "tnum"; }

/* ---------- top bar ---------- */
.bar {
  height: var(--bar); display: flex; align-items: center; gap: 24px;
  padding: 0 20px; border-bottom: 1px solid var(--k-3); background: var(--k-1);
  position: relative; z-index: 5;
}
.brand { display: flex; align-items: center; gap: 10px; background: none; border: 0; padding: 4px 0; font-weight: 700; font-size: 17px; letter-spacing: -.01em; }
.brand-mark { width: 22px; height: 22px; color: var(--c); }
.rail { display: flex; align-items: center; gap: 4px; margin-left: 12px; }
.rail-step {
  display: flex; align-items: center; gap: 8px; height: 32px; padding: 0 12px;
  background: none; border: 0; border-radius: 6px; color: var(--bone-3); font-weight: 500; font-size: 14px;
}
button.rail-step:hover { color: var(--bone); background: var(--k-2); }
.rail-step i { width: 14px; height: 0; border-top: 1px dashed currentColor; }
.rail-step.done { color: var(--bone-2); }
.rail-step.done i { border-top-style: solid; }
.rail-step.now { color: var(--bone); }
.rail-step.now i { border-top: 2px solid var(--c); }
.bar-end { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.engine { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--bone-2); }
.engine::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: var(--bone-3); }
.engine.live::before { background: var(--c); box-shadow: 0 0 0 3px var(--c-dim); }
.engine.off::before { background: transparent; border: 1px solid var(--y); }

/* ---------- buttons ---------- */
.btn {
  height: 36px; padding: 0 14px; display: inline-flex; align-items: center; gap: 8px;
  border-radius: 7px; border: 1px solid var(--k-4); background: var(--k-2); color: var(--bone);
  font-weight: 500; font-size: 14px; white-space: nowrap;
  transition: background .18s var(--ease), border-color .18s var(--ease), color .18s;
}
.btn:hover { background: var(--k-3); border-color: #475061; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.primary { background: var(--c); border-color: var(--c); color: #04212b; font-weight: 600; }
.btn.primary:hover { background: #6ee0fb; border-color: #6ee0fb; }
.btn.ghost { background: none; border-color: transparent; color: var(--bone-2); }
.btn.ghost:hover { color: var(--bone); background: var(--k-2); }
.btn.sm { height: 28px; padding: 0 10px; font-size: 13px; border-radius: 6px; }
.kbd { font-family: var(--mono); font-size: 12px; color: var(--bone-3); }

main { height: calc(100% - var(--bar)); position: relative; }
.home, .review, .arrange { grid-template-rows: minmax(0, 1fr); }
.home > *, .review > *, .arrange > * { min-height: 0; }

/* ---------- the glass (light table) ---------- */
.glass {
  position: relative; overflow: hidden;
  background:
    radial-gradient(ellipse 70% 60% at 50% 45%, rgba(170, 215, 235, .10), transparent 70%),
    repeating-linear-gradient(0deg, rgba(235, 232, 225, .045) 0 1px, transparent 1px 10px),
    repeating-linear-gradient(90deg, rgba(235, 232, 225, .045) 0 1px, transparent 1px 10px),
    repeating-linear-gradient(0deg, rgba(235, 232, 225, .06) 0 1px, transparent 1px 50px),
    repeating-linear-gradient(90deg, rgba(235, 232, 225, .06) 0 1px, transparent 1px 50px),
    #13171d;
}
.reg-corner { position: absolute; width: 26px; height: 26px; color: rgba(53, 208, 245, .55); pointer-events: none; }
.reg-corner.tl { top: 14px; left: 14px; } .reg-corner.tr { top: 14px; right: 14px; }
.reg-corner.bl { bottom: 14px; left: 14px; } .reg-corner.br { bottom: 14px; right: 14px; }

/* ---------- home ---------- */
.home { display: grid; grid-template-columns: minmax(0, 1fr) 380px; height: 100%; }
.home .glass { display: grid; place-items: center; padding: 48px; }
.drop {
  width: min(560px, 100%); aspect-ratio: 210 / 250; max-height: calc(100vh - var(--bar) - 120px);
  position: relative; display: flex; flex-direction: column; justify-content: center; align-items: flex-start;
  padding: 48px 44px; border: 1px dashed rgba(235, 232, 225, .35); border-radius: 2px;
  background: rgba(11, 13, 16, .35);
  transition: border-color .2s var(--ease), background .2s var(--ease);
}
.drop.over { border: 1px solid var(--c); background: rgba(53, 208, 245, .06); }
.crop { position: absolute; width: 18px; height: 18px; border-color: var(--bone-2); border-style: solid; border-width: 0; }
.crop.tl { top: -9px; left: -9px; border-top-width: 1px; border-left-width: 1px; }
.crop.tr { top: -9px; right: -9px; border-top-width: 1px; border-right-width: 1px; }
.crop.bl { bottom: -9px; left: -9px; border-bottom-width: 1px; border-left-width: 1px; }
.crop.br { bottom: -9px; right: -9px; border-bottom-width: 1px; border-right-width: 1px; }
.drop h1 { font-size: 40px; line-height: 1.06; letter-spacing: -.03em; font-weight: 700; margin: 0 0 16px; max-width: 12ch; text-wrap: balance; }
.drop p { margin: 0 0 28px; color: var(--bone-2); font-size: 15px; max-width: 40ch; }
.drop .actions { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; }
.drop .formats { position: absolute; left: 44px; bottom: 28px; font-size: 12px; color: var(--bone-3); }
.side { border-left: 1px solid var(--k-3); background: var(--k-1); padding: 28px 24px; overflow: auto; }
.side h2 { font-size: 14px; font-weight: 600; margin: 0 0 4px; }
.side .hint { color: var(--bone-3); font-size: 13px; margin: 0 0 16px; }
.sheet {
  display: grid; grid-template-columns: 76px 1fr; gap: 14px; align-items: center; width: 100%;
  padding: 10px; margin-bottom: 10px; text-align: left;
  border: 1px solid var(--k-3); border-radius: 8px; background: var(--k-2);
  transition: border-color .18s var(--ease), transform .18s var(--ease);
}
.sheet:hover { border-color: var(--c); }
.sheet img { width: 76px; height: 96px; object-fit: cover; object-position: top; background: var(--paper); border-radius: 2px; box-shadow: 0 6px 14px rgba(0, 0, 0, .45); }
.sheet b { display: block; font-size: 14px; font-weight: 600; margin-bottom: 2px; }
.sheet span { font-size: 13px; color: var(--bone-2); }
.sheet .tally { display: block; margin-top: 6px; font-size: 12px; color: var(--bone-3); }
.side hr { border: 0; border-top: 1px solid var(--k-3); margin: 22px 0; }
.engine-note { font-size: 13px; color: var(--bone-2); line-height: 1.55; }
.engine-note code { font-family: var(--mono); font-size: 12px; background: var(--k-2); padding: 1px 5px; border-radius: 4px; color: var(--bone); }

/* ---------- review ---------- */
.review { display: grid; grid-template-columns: 92px minmax(0, 1fr) minmax(420px, 34%); height: 100%; }
.tray { border-right: 1px solid var(--k-3); background: var(--k-1); overflow-y: auto; padding: 14px 12px; display: flex; flex-direction: column; gap: 14px; }
.thumb { position: relative; background: none; border: 0; padding: 0; display: block; }
.thumb img { width: 100%; display: block; border-radius: 2px; background: var(--paper); outline: 1px solid var(--k-4); outline-offset: 3px; transition: outline-color .18s; }
.thumb.on img { outline: 2px solid var(--c); }
.thumb .pn { display: flex; justify-content: space-between; margin-top: 6px; font-size: 11.5px; color: var(--bone-3); }
.thumb.on .pn { color: var(--bone); }
.thumb .ticks { display: flex; gap: 2px; }
.thumb .ticks i { width: 5px; height: 9px; border-left: 1px dashed var(--bone-3); }
.thumb .ticks i.ok { border-left: 1px solid var(--c); }
.thumb .ticks i.bad { border-left: 3px double var(--m); }
.thumb.err img { outline-color: var(--m); }
.thumb.reading::after { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 2px; background: var(--c); animation: thumbscan 1.1s var(--ease) infinite; }
@keyframes thumbscan { from { transform: translateY(0); } to { transform: translateY(110px); opacity: 0; } }

.table { display: flex; flex-direction: column; min-width: 0; }
.table .glass { flex: 1; display: grid; place-items: center; padding: 36px 44px; }
.stage { position: relative; line-height: 0; box-shadow: 0 18px 40px rgba(0, 0, 0, .55), 0 2px 6px rgba(0, 0, 0, .4); }
.stage img { display: block; max-width: 100%; max-height: calc(100vh - var(--bar) - 150px); user-select: none; -webkit-user-drag: none; }
.regions { position: absolute; inset: 0; }
.region { position: absolute; cursor: pointer; }
.region .edge { position: absolute; inset: 0; border: 1px dashed rgba(10, 111, 138, .75); transition: border-color .18s, background .18s; }
.region.ok .edge { border: 1px solid var(--c-ink); }
.region.bad .edge { border: 3px double var(--m-ink); }
.region.warn:not(.ok) .edge { border-color: #b79d00; }
.region:hover .edge { background: rgba(53, 208, 245, .07); }
.region.sel .edge { border-color: var(--c); background: rgba(53, 208, 245, .10); box-shadow: 0 0 0 1px var(--c); }
.region .tag {
  position: absolute; left: -1px; top: -1px; transform: translateY(-100%);
  font: 500 11.5px/1 var(--mono); padding: 3px 5px 2px; background: #0a6f8a; color: #fff; line-height: 1.3;
}
.region.bad .tag { background: var(--m-ink); }
.region.sel .tag { background: var(--c); color: #04212b; }
.region.ok .cm { position: absolute; width: 8px; height: 8px; border: 0 solid var(--c-ink); }
.region.ok .cm.a { left: -5px; top: -5px; border-left-width: 1px; border-top-width: 1px; }
.region.ok .cm.b { right: -5px; top: -5px; border-right-width: 1px; border-top-width: 1px; }
.region.ok .cm.c { left: -5px; bottom: -5px; border-left-width: 1px; border-bottom-width: 1px; }
.region.ok .cm.d { right: -5px; bottom: -5px; border-right-width: 1px; border-bottom-width: 1px; }
.figbox { position: absolute; border: 1px dotted var(--ink-2); pointer-events: none; }
.region.sel + .figbox, .figbox.sel { border-color: var(--c-ink); }
.lasso { position: absolute; border: 1px solid var(--c); background: rgba(53, 208, 245, .12); pointer-events: none; }
.stage.cropping { cursor: crosshair; }
.stage.cropping .region { pointer-events: none; opacity: .35; }

/* the scan — the one authored moment */
.scan { position: absolute; left: -14px; right: -14px; top: 0; height: 0; pointer-events: none; z-index: 3; display: none; }
.stage.scanning .scan { display: block; }
.scan::before { content: ""; position: absolute; left: 0; right: 0; top: -90px; height: 90px; background: linear-gradient(to bottom, transparent, rgba(53, 208, 245, .16)); }
.scan::after { content: ""; position: absolute; left: 0; right: 0; top: 0; height: 1px; background: var(--c); box-shadow: 0 0 10px 1px rgba(53, 208, 245, .7); }
.scan .ruler { position: absolute; right: 0; top: 4px; transform: translateX(100%); padding-left: 6px; font: 500 11px/1 var(--mono); color: var(--c); line-height: 1; }
.stage.scanning .scan { animation: sweep var(--scan-ms, 1400ms) cubic-bezier(.55, .08, .35, .95) forwards; }
.stage.scanning.loop .scan { animation: sweep 1.9s cubic-bezier(.55, .08, .35, .95) infinite; }
@keyframes sweep { from { top: 0; opacity: 1; } 92% { opacity: 1; } to { top: 100%; opacity: 0; } }
.stage.scanning img { filter: saturate(.7) brightness(.96); }

.tablebar { height: 44px; display: flex; align-items: center; gap: 10px; padding: 0 16px; border-top: 1px solid var(--k-3); background: var(--k-1); font-size: 13px; color: var(--bone-2); }
.tablebar .grow { flex: 1; }
.legend { display: flex; gap: 14px; align-items: center; }
.legend span { display: flex; gap: 6px; align-items: center; }
.legend i { width: 18px; height: 0; }
.legend .l-review { border-top: 1px dashed var(--bone-2); }
.legend .l-ok { border-top: 1px solid var(--c); }
.legend .l-bad { border-top: 3px double var(--m); height: 3px; }

/* ---------- proof column ---------- */
.proof { border-left: 1px solid var(--k-3); background: var(--k-1); display: flex; flex-direction: column; min-width: 0; }
.proof-head { padding: 14px 18px 0; border-bottom: 1px solid var(--k-3); }
.tally-row { display: flex; align-items: baseline; gap: 12px; margin-bottom: 12px; }
.tally-row strong { font-size: 20px; font-weight: 600; letter-spacing: -.01em; }
.tally-row .of { color: var(--bone-3); font-size: 14px; }
.meter { flex: 1; display: flex; gap: 2px; height: 10px; align-items: stretch; }
.meter i { flex: 1; border-left: 1px dashed var(--k-4); }
.meter i.ok { border-left: 1px solid var(--c); }
.meter i.bad { border-left: 3px double var(--m); }
.tabs { display: flex; gap: 2px; }
.tab { background: none; border: 0; padding: 9px 10px 10px; color: var(--bone-3); font-size: 14px; font-weight: 500; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tab:hover { color: var(--bone); }
.tab.on { color: var(--bone); border-bottom-color: var(--c); }
.tab .n { font-family: var(--mono); font-size: 12px; margin-left: 5px; color: var(--bone-3); }
.tab .n.m { color: var(--m); }
.slips { flex: 1; overflow-y: auto; padding: 16px 18px 40px; }
.slips-empty { color: var(--bone-3); font-size: 14px; padding: 28px 4px; line-height: 1.6; }
.pagehead { font: 500 12px/1 var(--mono); color: var(--bone-3); margin: 18px 0 8px; display: flex; gap: 8px; align-items: center; }
.pagehead::after { content: ""; flex: 1; border-top: 1px solid var(--k-3); }
.pagehead:first-child { margin-top: 0; }

.slip { position: relative; margin: 0 0 14px; }
.slip.fresh { animation: register .5s var(--ease) both; }
@keyframes register {
  from { clip-path: inset(0 0 100% 0); transform: translateY(-6px); }
  to { clip-path: inset(0 0 -40px 0); transform: none; }
}
.slip .sheet-p {
  position: relative; background: var(--paper); color: var(--ink); border-radius: 2px;
  padding: 14px 16px 12px 44px; font: 400 15px/1.5 var(--serif);
  box-shadow: 0 1px 0 rgba(0, 0, 0, .3), 0 8px 18px rgba(0, 0, 0, .28);
  outline: 1px dashed transparent; outline-offset: 4px; transition: outline-color .18s;
}
.slip.sel .sheet-p { outline: 1px solid var(--c); }
.slip.bad .sheet-p { outline: 3px double var(--m); outline-offset: 3px; }
.slip.bad.sel .sheet-p { outline-color: var(--m); }
.slip .qn { position: absolute; left: 14px; top: 14px; font: 700 15px/1.5 var(--serif); }
.slip .qtype { position: absolute; right: 10px; top: 8px; font: 500 10.5px/1 var(--mono); color: #6c6f76; letter-spacing: .02em; }
.slip .qtext { margin-right: 26px; }
.slip .opts { display: grid; gap: 4px 14px; margin-top: 8px; }
.slip .opts.c4 { display: flex; flex-wrap: wrap; gap: 4px 22px; }
.slip .opts.c4 .opt { white-space: nowrap; }
.slip .opts.c2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.slip .opts.c1 { grid-template-columns: 1fr; }
.slip .opt.key { text-decoration: underline; text-decoration-color: rgba(10, 111, 138, .55); text-underline-offset: 3px; }
.slip .fig { display: block; margin: 10px auto 2px; max-width: 70%; max-height: 180px; }
.slip .ans { display: flex; gap: 10px; align-items: baseline; margin-top: 10px; padding-top: 8px; border-top: 1px solid #e3e0d8; font: 400 13px/1.4 var(--ui); color: var(--ink-2); }
.slip .ans b { font-weight: 600; color: var(--ink); }
.slip .ans .sol { color: #6c6f76; font-size: 13px; }
.katex { font-size: 1.04em; }

.notes { margin: 8px 0 0 44px; display: flex; flex-direction: column; gap: 6px; }
.note { position: relative; padding-left: 14px; font-size: 13.5px; line-height: 1.45; color: var(--bone-2); }
.note::before { content: ""; position: absolute; left: 0; top: 3px; bottom: 3px; border-left: 1px solid var(--bone-3); }
.note.check::before { border-left: 1px dashed var(--y); }
.note.check { color: #e7dca4; }
.note.conflict::before { border-left: 3px double var(--m); }
.note.conflict { color: #ffc2de; }
.note b { font-weight: 600; margin-right: 4px; }
.slip-actions { display: flex; gap: 6px; margin: 8px 0 0 44px; align-items: center; }
.slip-actions .state { margin-left: auto; font: 500 11.5px/1 var(--mono); color: var(--bone-3); }
.slip-actions .state.ok { color: var(--c); }
.slip.excluded .sheet-p { opacity: .35; }

/* edit form */
.editor { background: var(--k-2); border: 1px solid var(--k-4); border-radius: 8px; padding: 14px; margin-top: 8px; display: grid; gap: 10px; }
.editor label { display: grid; gap: 5px; font-size: 13px; color: var(--bone-2); }
.editor .row { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.field, .editor textarea, .editor input, .editor select {
  width: 100%; background: var(--k-0); border: 1px solid var(--k-4); border-radius: 6px; padding: 8px 10px; font-size: 14px; color: var(--bone);
}
.editor textarea { font-family: var(--mono); font-size: 13.5px; line-height: 1.5; min-height: 84px; resize: vertical; }
.editor input { font-family: var(--mono); font-size: 13.5px; }
.editor .hint { font-size: 12.5px; color: var(--bone-3); }
.editor .row-end { display: flex; gap: 8px; justify-content: flex-end; }

.pageerr { border: 1px solid var(--m-ink); border-radius: 8px; padding: 12px 14px; color: #ffc2de; font-size: 14px; margin-bottom: 14px; display: flex; gap: 12px; align-items: center; }

/* skeleton slip while reading */
.ghost-slip { height: 92px; border-radius: 2px; margin-bottom: 14px; background: repeating-linear-gradient(0deg, rgba(235, 232, 225, .06) 0 1px, transparent 1px 12px); border: 1px dashed var(--k-4); position: relative; overflow: hidden; }
.ghost-slip::after { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, transparent, rgba(53, 208, 245, .08), transparent); animation: shimmer 1.4s linear infinite; }
@keyframes shimmer { from { transform: translateX(-100%); } to { transform: translateX(100%); } }

/* ---------- arrange ---------- */
.arrange { display: grid; grid-template-columns: 340px minmax(0, 1fr); height: 100%; }
.settings { border-right: 1px solid var(--k-3); background: var(--k-1); overflow-y: auto; padding: 20px 20px 40px; }
.settings h2 { font-size: 14px; font-weight: 600; margin: 0 0 12px; }
.settings h2 + .hint { margin-top: -8px; }
.settings .hint { font-size: 13px; color: var(--bone-3); margin: 0 0 12px; }
.secset { border-top: 1px solid var(--k-3); padding: 14px 0; display: grid; gap: 8px; }
.secset .top { display: flex; align-items: center; gap: 8px; }
.secset .sid { font: 500 12px/1 var(--mono); color: var(--bone-3); width: 18px; }
.secset .cnt { margin-left: auto; font: 500 12px/1 var(--mono); color: var(--bone-3); }
.secset input.field { padding: 6px 8px; font-size: 13.5px; }
.marks { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--bone-2); }
.marks input { width: 56px; text-align: center; font-family: var(--mono); }
.toggle { display: flex; align-items: center; gap: 10px; font-size: 14px; padding: 7px 0; cursor: pointer; }
.toggle input { accent-color: var(--c); width: 15px; height: 15px; }
.total { display: flex; justify-content: space-between; align-items: baseline; border-top: 1px solid var(--k-3); padding-top: 14px; margin-top: 6px; }
.total b { font: 500 22px/1 var(--mono); }

.desk { overflow-y: auto; padding: 40px 32px 80px; position: relative; }
.desk-bar { position: sticky; top: -40px; margin: -40px -32px 28px; padding: 12px 32px; display: flex; gap: 10px; align-items: center; background: rgba(11, 13, 16, .92); border-bottom: 1px solid var(--k-3); z-index: 3; }
.desk-bar .grow { flex: 1; font-size: 13px; color: var(--bone-3); }
.a4 {
  width: min(794px, 100%); min-height: 1123px; margin: 0 auto; background: var(--paper); color: var(--ink);
  padding: 68px 76px 80px; font: 400 16px/1.5 var(--serif); position: relative;
  box-shadow: 0 30px 60px rgba(0, 0, 0, .55), 0 3px 8px rgba(0, 0, 0, .4);
}
.a4 .crop { border-color: var(--bone-3); }
.a4 .crop.tl { top: -22px; left: -22px; } .a4 .crop.tr { top: -22px; right: -22px; }
.a4 .crop.bl { bottom: -22px; left: -22px; } .a4 .crop.br { bottom: -22px; right: -22px; }
.ed { border-radius: 2px; outline: none; transition: background .15s; min-width: 2ch; display: inline-block; }
.ed:hover { background: rgba(53, 208, 245, .10); }
.ed:focus { background: rgba(53, 208, 245, .16); box-shadow: 0 1px 0 var(--c-ink); }
.ed:empty::before { content: attr(data-ph); color: #a09d96; }
.a4 .h1 { text-align: center; font-weight: 700; font-size: 21px; letter-spacing: .01em; text-transform: uppercase; }
.a4 .h2 { text-align: center; font-weight: 700; font-size: 17px; }
.a4 .h3 { text-align: center; font-size: 16px; margin-bottom: 14px; }
.a4 .meta { display: flex; justify-content: space-between; font-weight: 700; margin: 6px 0 8px; }
.a4 .stud { margin: 4px 0 6px; }
.a4 .sec { margin-top: 22px; }
.a4 .sec h3 { margin: 0 0 4px; font-size: 16.5px; font-weight: 700; text-decoration: underline; text-underline-offset: 3px; display: flex; gap: 14px; align-items: baseline; }
.a4 .sec h3 small { font-weight: 400; font-size: 14px; text-decoration: none; }
.a4 .sec .ins { font-style: italic; font-size: 14.5px; margin: 0 0 4px; }
.aq { display: grid; grid-template-columns: 22px 34px 1fr; margin: 0 -40px 0 -58px; padding: 7px 40px 7px 0; border-radius: 3px; position: relative; transition: background .15s; }
.aq:hover { background: rgba(53, 208, 245, .07); }
.aq .grip { opacity: 0; cursor: grab; display: grid; place-items: center; color: #7d7b75; transition: opacity .15s; }
.aq:hover .grip { opacity: 1; }
.aq .n { font-weight: 700; }
.aq .opts { display: grid; gap: 2px 16px; margin-top: 4px; }
.aq .opts.c4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.aq .opts.c2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.aq .fig { display: block; margin: 8px auto 2px; max-width: 58%; max-height: 220px; }
.aq.dragging { opacity: .35; }
.aq.drop-before::before { content: ""; position: absolute; left: 0; right: 0; top: -1px; border-top: 2px solid var(--c); }
.sec.drop-into h3 { color: var(--c-ink); }
.aq .flagdot { position: absolute; right: 12px; top: 12px; width: 18px; border-top: 3px double var(--m); }
.a4 .keypage { margin-top: 40px; padding-top: 24px; border-top: 1px dashed #c9c5bc; }
.a4 .keypage h4 { text-align: center; font-size: 17px; margin: 0 0 10px; }
.a4 .keypage p { margin: 2px 0; font-size: 14.5px; }
.a4 .keypage .s { color: #5d6067; font-size: 13px; }
.pagebreak { text-align: center; font: 500 11px/1 var(--mono); color: #a09d96; margin: 28px 0 0; }

/* ---------- toast ---------- */
.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translate(-50%, 20px); opacity: 0; pointer-events: none;
  background: var(--k-2); border: 1px solid var(--k-4); border-radius: 8px; padding: 10px 16px; font-size: 14px;
  box-shadow: 0 12px 30px rgba(0, 0, 0, .5); transition: opacity .2s var(--ease), transform .2s var(--ease); z-index: 20;
}
.toast.on { opacity: 1; transform: translate(-50%, 0); }
.toast.err { border-color: var(--m-ink); }

/* ---------- small screens ---------- */
@media (max-width: 980px) {
  body { overflow: auto; }
  main { height: auto; min-height: calc(100% - var(--bar)); }
  .rail { display: none; }
  .home, .review, .arrange { grid-template-columns: 1fr; grid-template-rows: none; height: auto; }
  .home .glass { padding: 32px 16px; min-height: 70vh; }
  .drop { aspect-ratio: auto; min-height: 420px; padding: 36px 24px 56px; }
  .drop h1 { font-size: 32px; }
  .drop .formats { left: 24px; }
  .side { border-left: 0; border-top: 1px solid var(--k-3); }
  .tray { flex-direction: row; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--k-3); padding: 10px 16px; }
  .thumb { flex: 0 0 64px; }
  .table .glass { padding: 24px 16px; }
  .stage img { max-height: 60vh; }
  .proof { border-left: 0; }
  .slips { overflow: visible; }
  .settings { border-right: 0; border-bottom: 1px solid var(--k-3); }
  .desk { padding: 24px 16px 60px; overflow: visible; }
  .desk-bar { position: static; margin: -24px -16px 20px; padding: 12px 16px; }
  .a4 { padding: 36px 24px 48px; min-height: 0; font-size: 15px; }
  .aq { margin: 0; padding: 6px 0; grid-template-columns: 30px 1fr; }
  .aq .grip { display: none; }
  .aq .opts.c4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; }
}

/* sets (one upload → several papers) */
.setbar { display: flex; gap: 8px; justify-content: center; margin: -8px auto 24px; flex-wrap: wrap; }
.settab { display: flex; align-items: center; gap: 10px; height: 36px; padding: 0 14px; border-radius: 7px; border: 1px dashed var(--k-4); background: var(--k-1); color: var(--bone-2); font-size: 14px; font-weight: 500; }
.settab:hover { color: var(--bone); border-color: #475061; }
.settab.on { border: 1px solid var(--c); color: var(--bone); background: var(--k-2); }
.settab .mono { font-size: 12px; color: var(--c); }
.settab .n { color: var(--bone-3); }

/* figures: redrawn vs original */
.figcmp { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin: 10px 0 2px; }
.figopt { background: #fff; border: 1px dashed #c9c5bc; border-radius: 3px; padding: 8px 8px 6px; display: flex; flex-direction: column; align-items: center; gap: 6px; cursor: pointer; color: var(--ink-2); font: 500 12.5px/1.2 var(--ui); }
.figopt img { max-width: 100%; max-height: 150px; display: block; }
.figopt:hover { border-color: var(--c-ink); }
.figopt.on { border: 1px solid var(--c-ink); box-shadow: 0 0 0 1px var(--c-ink); color: var(--c-ink); }
.figstate { font: 500 12px/1 var(--mono); color: var(--c-ink); text-align: center; margin: 4px 0 0; }

/* settings drawer */
dialog.drawer { margin: 0 0 0 auto; height: 100%; max-height: 100%; width: min(460px, 100%); border: 0; border-left: 1px solid var(--k-3); padding: 0; background: var(--k-1); color: var(--bone); }
dialog.drawer::backdrop { background: rgba(5, 6, 8, .6); }
dialog.drawer[open] { animation: slidein .22s var(--ease); }
@keyframes slidein { from { transform: translateX(24px); opacity: 0; } to { transform: none; opacity: 1; } }
.drawer-in { padding: 20px 24px 40px; display: grid; gap: 8px; }
.drawer-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 8px; }
.drawer-head h2 { font-size: 18px; margin: 0; }
.drawer-in section { border-top: 1px solid var(--k-3); padding: 18px 0 10px; display: grid; gap: 10px; }
.drawer-in h3 { font-size: 14px; font-weight: 600; margin: 0; }
.drawer-in .hint { font-size: 13px; color: var(--bone-3); margin: 0; line-height: 1.5; }
.fieldlab { display: grid; gap: 6px; font-size: 13px; color: var(--bone-2); }
.keyin { display: flex; gap: 6px; }
.keyin input { flex: 1; background: var(--k-0); border: 1px solid var(--k-4); border-radius: 6px; padding: 9px 10px; font: 13px var(--mono); color: var(--bone); }
.keyrow { display: flex; align-items: center; gap: 10px; font-size: 13.5px; margin: 0; }
.dotok { width: 8px; height: 8px; border-radius: 50%; background: var(--c); box-shadow: 0 0 0 3px var(--c-dim); }
.formerr { color: #ffc2de; font-size: 13.5px; margin: 0; min-height: 0; }
.formerr:empty { display: none; }
.radio { display: flex; gap: 10px; align-items: flex-start; font-size: 14px; color: var(--bone-2); cursor: pointer; }
.radio input { accent-color: var(--c); margin-top: 3px; }
.radio b { color: var(--bone); font-weight: 600; }
.wsin { background: var(--k-0); border: 1px solid var(--k-4); border-radius: 6px; padding: 9px 10px; font: 13px var(--mono); color: var(--bone); }

/* ---------- patterns: arrange sidebar ---------- */
.settings details { border-top: 1px solid var(--k-3); padding: 12px 0; }
.settings details:first-child { border-top: 0; padding-top: 0; }
.settings summary { cursor: pointer; font-size: 14px; font-weight: 600; list-style: none; display: flex; align-items: center; gap: 8px; padding: 2px 0 6px; }
.settings summary::-webkit-details-marker { display: none; }
.settings summary::before { content: ""; width: 7px; height: 7px; border-right: 1.5px solid var(--bone-3); border-bottom: 1.5px solid var(--bone-3); transform: rotate(-45deg); transition: transform .18s var(--ease); }
.settings details[open] > summary::before { transform: rotate(45deg); }
.settings details > * + * { margin-top: 8px; }
.settings .field { width: 100%; background: var(--k-0); border: 1px solid var(--k-4); border-radius: 6px; padding: 7px 9px; font-size: 13.5px; color: var(--bone); }
.settings textarea.field { resize: vertical; line-height: 1.45; font-family: var(--ui); }
.settings select.field { padding: 6px 8px; }
.lab { display: grid; gap: 5px; font-size: 13px; color: var(--bone-2); }
.saveas { display: flex; gap: 6px; }
.saveas .field { flex: 1; }
.row2 { display: flex; gap: 6px; flex-wrap: wrap; }
.subj { border: 1px solid var(--k-3); border-radius: 8px; padding: 10px; display: grid; gap: 8px; background: var(--k-2); }
.subjhead { display: flex; gap: 6px; }
.subjhead .field { font-weight: 600; }
.partset { border-left: 1px dashed var(--k-4); padding: 2px 0 6px 10px; display: grid; gap: 6px; }
.partset .top { display: flex; gap: 6px; align-items: center; }
.partset .top .field { flex: 1; }
.nums { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; }
.nums label { display: grid; gap: 3px; font-size: 12px; color: var(--bone-3); }
.nums .field { font-family: var(--mono); text-align: center; padding: 5px 4px; }
.chips { display: flex; flex-wrap: wrap; gap: 5px; align-items: center; }
.chip { display: inline-flex; align-items: center; gap: 4px; font-size: 12.5px; padding: 3px 4px 3px 9px; border-radius: 99px; border: 1px solid var(--k-4); color: var(--bone); }
.chip button { background: none; border: 0; color: var(--bone-3); padding: 0 4px; font-size: 14px; line-height: 1; }
.chip button:hover { color: var(--m); }
.addtype { background: var(--k-0); border: 1px dashed var(--k-4); color: var(--bone-2); border-radius: 99px; font-size: 12.5px; padding: 3px 8px; }
.slotc { font: 500 12px/1 var(--mono); padding: 4px 7px; border-radius: 5px; border: 1px dashed var(--bone-3); color: var(--bone-2); white-space: nowrap; }
.slotc.full { border: 1px solid var(--c); color: var(--c); }
.slotc.short { border: 1px dashed var(--y); color: var(--y); }
.slotc.over { border: 3px double var(--m); color: var(--m); padding: 2px 5px; }
.warnline { font-size: 13px; color: #e7dca4; line-height: 1.6; margin: 6px 0 0; padding-left: 10px; border-left: 1px dashed var(--y); }
.typerow { display: grid; grid-template-columns: 1fr 120px auto; gap: 6px; }
.tplbox { border: 1px dashed var(--k-4); border-radius: 8px; padding: 10px; display: grid; gap: 8px; font-size: 13.5px; }
.filebtn { cursor: pointer; justify-self: start; }
.subjpick { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--bone-2); }
.subjpick select { background: var(--k-0); border: 1px solid var(--k-4); border-radius: 6px; color: var(--bone); font-size: 13px; padding: 4px 6px; }
.srcname { color: var(--bone-3); max-width: 180px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- papers list ---------- */
.paperrow { display: flex; gap: 6px; align-items: center; margin-bottom: 10px; }
.paperrow .sheet { margin: 0; flex: 1; }
.paperrow .rm { flex: 0 0 auto; }
.nothumb { width: 76px; height: 96px; border: 1px dashed var(--k-4); border-radius: 2px; }

/* ---------- paper preview additions ---------- */
.a4.bordered::after { content: ""; position: absolute; inset: 26px; border: 1px solid #1b1d22; pointer-events: none; }
.phead { display: flex; justify-content: space-between; font: 400 11px/1 var(--ui); color: #5d6067; margin: -30px 0 22px; }
.tplnote { font: 400 13.5px/1.5 var(--ui); color: var(--c-ink); border: 1px dashed var(--c-ink); border-radius: 4px; padding: 8px 10px; margin: 0 0 16px; }
.coverprev { text-align: center; }
.coverprev .cl1 { font-size: 26px; font-weight: 700; letter-spacing: .02em; margin-bottom: 4px; }
.coverprev .cl2 { font-size: 17px; font-weight: 700; margin-bottom: 2px; }
.coverprev .cfields { display: grid; grid-template-columns: 1fr 1fr; gap: 4px 20px; text-align: left; margin: 14px 0; font-size: 14.5px; }
.coverprev .cfields span:nth-child(even) { text-align: right; }
.coverprev .cins { text-align: left; font-size: 14px; margin: 10px 0; }
.coverprev .cins i { display: block; text-align: center; font-weight: 700; font-size: 15px; margin-bottom: 6px; }
.coverprev .cins ol { margin: 0; padding-left: 26px; }
.coverprev .qtable { margin: 12px auto; font-size: 13px; }
.coverprev .cstud { text-align: left; margin: 12px 0 0; }
.coverprev .cnote { font-weight: 700; margin: 14px 0 0; }
.qtable { border-collapse: collapse; margin: 6px 0; font-size: .95em; }
.qtable th, .qtable td { border: 1px solid #1b1d22; padding: 4px 8px; text-align: left; vertical-align: top; }
.qtable th { font-weight: 700; }
.subjtitle { text-align: center; font-weight: 700; font-size: 18px; letter-spacing: .04em; margin: 26px 0 4px; }
.a4 .sec.centered h3 { justify-content: center; }
.a4 .sec h3 .slotc { font-size: 11.5px; text-decoration: none; margin-left: 8px; }
.a4 .sec h3 .slotc.full { border-color: var(--c-ink); color: var(--c-ink); }
.a4 .sec h3 .slotc.short { border-color: #b79d00; color: #7d6800; }
.emptypart { font: 400 14px/1.5 var(--ui); color: #8a877f; border: 1px dashed #c9c5bc; border-radius: 4px; padding: 12px; margin: 6px 0; text-align: center; }
.a4 .sec.loose { border: 1px dashed #b79d00; border-radius: 4px; padding: 10px 14px; background: #fffbe8; }
.a4 .sec.loose h3 { text-decoration: none; }
.tablebar > * { white-space: nowrap; flex-shrink: 0; }
.tablebar .srcname { flex-shrink: 1; min-width: 40px; }
.legend span { white-space: nowrap; }
@media (max-width: 1560px) { .tablebar .legend { display: none; } }

.ustats { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.ustats > div { border: 1px solid var(--k-3); border-radius: 8px; padding: 10px; display: grid; gap: 2px; }
.ustats .k { font-size: 12px; color: var(--bone-3); }
.ustats b { font: 600 20px/1.2 var(--mono); }
.ustats .s { font-size: 12px; color: var(--bone-3); }
.utable { width: 100%; border-collapse: collapse; font-size: 13px; }
.utable th { text-align: left; font-weight: 500; color: var(--bone-3); padding: 4px 6px 4px 0; border-bottom: 1px solid var(--k-3); }
.utable td { padding: 5px 6px 5px 0; border-bottom: 1px solid var(--k-2); color: var(--bone-2); }
.btn.keyneeded { border-color: #b79d00; color: #f5e9a8; }
.btn.keyneeded:hover { border-color: var(--y); }

/* export format picker */
.fmt { display: inline-flex; border: 1px solid var(--k-3); border-radius: 8px; overflow: hidden; }
.fmt button { background: none; border: 0; color: var(--bone-2, #9aa); padding: 6px 12px; font: inherit; cursor: pointer; }
.fmt button.on { background: var(--k-3); color: var(--bone); }
dialog.ask { border: 1px solid var(--k-3); border-radius: 12px; background: var(--k-1); color: var(--bone); padding: 20px; width: min(420px, 92vw); }
dialog.ask::backdrop { background: rgba(5, 6, 8, .6); }
dialog.ask h3 { margin: 0 0 6px; }
dialog.ask .field { width: 100%; margin: 12px 0 16px; box-sizing: border-box; }

/* help drawer */
.linkbtn { background: none; border: 0; padding: 0; color: var(--c); font: inherit; font-size: .9em; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
.help details { border-top: 1px solid var(--k-3); padding: 12px 20px; }
.help summary { cursor: pointer; font-weight: 600; padding: 4px 0; }
.help .hsteps { padding-left: 20px; line-height: 1.5; }
.help .hsteps li { margin: 8px 0; }
.hsym { display: flex; gap: 14px; align-items: flex-start; margin: 12px 0; }
.hsym p { margin: 2px 0 0; color: var(--bone-2); line-height: 1.45; }
.hsym .sw { flex: none; width: 44px; height: 28px; background: #f4f1ea; border-radius: 2px; position: relative; }
.sw.s-review { outline: 1px dashed rgba(10, 111, 138, .9); outline-offset: -5px; }
.sw.s-ok { outline: 1px solid var(--c-ink); outline-offset: -5px; }
.sw.s-bad { outline: 3px double var(--m-ink); outline-offset: -6px; }
.sw.s-warn { outline: 1px dashed #b79d00; outline-offset: -5px; }
.sw.s-sel { outline: 1px solid var(--c); outline-offset: -5px; background: #d9f3fa; }
.sw.s-fig { outline: 1px dotted #555; outline-offset: -5px; }
.sw.s-tick { background: repeating-linear-gradient(90deg, var(--c) 0 1px, transparent 1px 8px); opacity: .9; height: 14px; margin-top: 6px; }
.sw.n-info, .sw.n-check, .sw.n-bad { background: none; width: 4px; height: 34px; margin: 0 20px; }
.sw.n-info { border-left: 1px solid var(--bone-3); }
.sw.n-check { border-left: 1px dashed var(--y); }
.sw.n-bad { border-left: 3px double var(--m); }
.hterms dt { font-weight: 600; margin-top: 10px; }
.hterms dd { margin: 2px 0 0; color: var(--bone-2); line-height: 1.45; }

/* Chalky, the helper */
.chalky { position: fixed; right: 20px; bottom: 16px; z-index: 50; display: flex; align-items: flex-end; gap: 4px; pointer-events: none; }
.chalky.left { right: auto; left: 20px; flex-direction: row-reverse; }
.chalky > * { pointer-events: auto; }
.ch-img { width: 76px; height: 80px; object-fit: contain; animation: ch-bob 2.4s ease-in-out infinite; transform-origin: 50% 100%; filter: drop-shadow(0 6px 8px rgba(0, 0, 0, .35)); }
.ch-bubble { position: relative; width: 220px; margin-bottom: 50px; background: var(--paper); color: var(--ink); border-radius: 14px; padding: 10px 13px 11px; box-shadow: 0 10px 30px rgba(0, 0, 0, .45); }
.ch-bubble::after { content: ""; position: absolute; right: -8px; bottom: 18px; border: 9px solid transparent; border-left-color: var(--paper); border-right: 0; }
.chalky.left .ch-bubble::after { right: auto; left: -8px; border-left: 0; border-right: 9px solid var(--paper); border-top-color: transparent; border-bottom-color: transparent; }
.ch-name { margin: 0; font: 500 12px var(--mono); letter-spacing: .06em; text-transform: uppercase; color: var(--c-ink); }
.ch-bubble h4 { margin: 3px 22px 3px 0; font-size: 14px; }
.ch-text { margin: 0; font-size: 14px; line-height: 1.4; color: var(--ink-2); min-height: 36px; }
.ch-x { position: absolute; top: 6px; right: 8px; width: 28px; height: 28px; border: 0; border-radius: 50%; background: none; color: var(--ink-2); font-size: 20px; line-height: 1; cursor: pointer; }
.ch-x:hover { background: var(--paper-2); color: var(--ink); }
.ch-more { margin-top: 6px; padding: 0; border: 0; background: none; color: var(--c-ink); font: 600 14px var(--ui); cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
.chalky.in .ch-img { animation: ch-pop .6s cubic-bezier(.3, 1.6, .5, 1) both, ch-bob 2.4s ease-in-out .6s infinite; }
.chalky.in .ch-bubble { animation: ch-fade .25s ease-out .5s both; }
.chalky.out { animation: ch-drop .3s ease-in both; }
@keyframes ch-pop { 0% { transform: translateY(140%) scale(.8, 1.1); } 70% { transform: translateY(-6%) scale(1.04, .96); } 100% { transform: none; } }
@keyframes ch-bob { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-5px); } }
@keyframes ch-fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@keyframes ch-drop { to { opacity: 0; transform: translateY(40px); } }
@media (prefers-reduced-motion: reduce) { .ch-img, .chalky.in .ch-img, .chalky.in .ch-bubble, .chalky.out { animation: none; } }
@media (max-width: 560px) { .ch-bubble { width: min(240px, calc(100vw - 150px)); } }

/* Arrange: three groups, one-line parts */
.settings summary .sum { margin-left: auto; font-weight: 400; color: var(--bone-3); font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 60%; }
.settings summary .sum .y { color: var(--y); font-weight: 500; }
.settings details.sub { border: 0; padding: 4px 0 0; margin-top: 10px; }
.settings details.sub > summary { font-weight: 500; color: var(--bone-2); font-size: 13.5px; }
.pcols, .prow { display: grid; grid-template-columns: minmax(0, 1fr) 70px 44px 44px 26px; gap: 5px; align-items: center; }
.pcols { font: 500 11.5px var(--mono); color: var(--bone-3); text-transform: uppercase; letter-spacing: .04em; }
.pcols span:not(:first-child) { text-align: center; }
.prow .field { padding: 5px 6px; }
.prow .pnum { font-family: var(--mono); text-align: center; padding: 5px 2px; }
.pcount { display: flex; align-items: center; justify-content: center; gap: 2px; font: 500 13px var(--mono); color: var(--bone-2); }
.pcount span { color: var(--bone-3); }
.pcount input { width: 34px; font-family: var(--mono); text-align: center; padding: 5px 2px !important; }
.pcount.full { color: var(--c); } .pcount.short { color: var(--y); } .pcount.over { color: var(--m); }
.prow .btn.sm { padding: 3px 6px; }
.settings details.pmore { border: 0; padding: 0 0 6px; margin-top: 2px; }
.settings details.pmore > summary { font-size: 12.5px; font-weight: 400; color: var(--bone-3); padding: 0 0 2px 2px; }
.settings details.pmore > summary::before { width: 5px; height: 5px; }
.subj { padding: 8px; gap: 4px; }
.keyopt { display: inline-flex; align-items: center; gap: 5px; font-size: 14px; color: var(--bone-2); white-space: nowrap; }

/* logo + watermark */
.brandbox { border: 1px dashed var(--k-4); border-radius: 8px; padding: 10px; display: grid; gap: 8px; font-size: 13.5px; }
.logorow { display: flex; align-items: center; gap: 10px; }
.logorow img { height: 40px; max-width: 90px; object-fit: contain; background: var(--paper); border-radius: 4px; padding: 3px; }
.seg { display: inline-flex; border: 1px solid var(--k-4); border-radius: 6px; overflow: hidden; }
.seg button { background: none; border: 0; color: var(--bone-2); padding: 5px 9px; font: inherit; font-size: 13px; cursor: pointer; }
.seg button.on { background: var(--k-3); color: var(--bone); }
.brandbox input[type=range] { width: 100%; accent-color: var(--c); }
.a4 { position: relative; }
.plogo { display: flex; margin-bottom: 8px; } .plogo.center { justify-content: center; } .plogo.right { justify-content: flex-end; }
.plogo img { height: 62px; max-width: 45%; object-fit: contain; }
.pwm { position: absolute; inset: 0; display: flex; align-items: center; justify-content: center; pointer-events: none; overflow: hidden; }
.pwm img { width: 60%; max-height: 50%; object-fit: contain; }
.pwm.text span { font: 700 64px var(--ui); color: #555; transform: rotate(-35deg); white-space: nowrap; }

/* ---------- accounts ---------- */
body.signedout .bar-end > *:not(#usermenu):not(.themesw), body.signedout .rail { display: none !important; }
#usermenu { display: inline-flex; align-items: center; gap: 6px; }
#usermenu .who { font-size: 14px; color: var(--bone-2); max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#usermenu .offline { font-style: normal; font: 500 11px var(--mono); color: var(--y); border: 1px solid var(--y); border-radius: 4px; padding: 0 4px; }
#usermenu .btn.on { color: var(--c); }
.signin { min-height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 40px 16px; gap: 18px; }
.signcard { width: min(400px, 100%); background: var(--k-1); border: 1px solid var(--k-3); border-radius: 14px; padding: 32px 28px 26px; display: grid; gap: 14px; }
.signcard h1 { font-size: 22px; margin: 6px 0 0; font-weight: 600; }
.signcard .hint { margin: -6px 0 4px; }
.signcard .lab { display: grid; gap: 6px; font-size: 14px; color: var(--bone-2); }
.signcard .btn.primary { justify-content: center; padding: 11px; margin-top: 4px; }
.signcard .alt { display: flex; justify-content: space-between; gap: 10px; flex-wrap: wrap; }
.brand-mark.big { width: 30px; height: 30px; color: var(--c); }
.signmsg { margin: 0; padding: 10px 12px; border-radius: 8px; font-size: 14.5px; background: var(--k-2); border-left: 2px solid var(--c); }
.signmsg.err { border-left: 3px double var(--m); }
.signfoot { font-size: 13.5px; color: var(--bone-3); text-align: center; }
.signfoot a { color: var(--bone-2); }
.admin { padding: 28px clamp(16px, 4vw, 48px) 60px; overflow-y: auto; height: 100%; box-sizing: border-box; }
.adminhead { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; margin-bottom: 22px; }
.adminhead h1 { margin: 4px 0 0; font-size: 28px; font-weight: 600; }
.eyebrow { margin: 0; font: 500 12px var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--c); }
.tiles { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; background: var(--k-3); border: 1px solid var(--k-3); border-radius: 12px; overflow: hidden; margin-bottom: 22px; }
.tile { background: var(--k-1); padding: 18px 20px; display: grid; gap: 4px; }
.tile span { font: 500 12px var(--mono); text-transform: uppercase; letter-spacing: .06em; color: var(--bone-3); }
.tile b { font: 600 30px/1.1 var(--ui); } .tile b.c { color: var(--c); } .tile b.y { color: var(--y); } .tile b.m { color: var(--m); }
.tile small { color: var(--bone-3); }
.admincard { background: var(--k-1); border: 1px solid var(--k-3); border-radius: 12px; overflow: hidden; }
.cardhead { padding: 16px 20px; border-bottom: 1px solid var(--k-3); } .cardhead h2 { margin: 0; font-size: 16px; }
.tablewrap { overflow-x: auto; }
.people { width: 100%; border-collapse: collapse; font-size: 14.5px; }
.people th, .people td { padding: 11px 14px; border-bottom: 1px solid var(--k-3); text-align: left; vertical-align: middle; }
.people th { font: 500 12px var(--mono); text-transform: uppercase; letter-spacing: .05em; color: var(--bone-3); }
.people td small { display: block; color: var(--bone-3); font-size: 13px; }
.people .num { text-align: right; }
.people tr.off td { opacity: .5; }
.pill { font-style: normal; font: 500 11.5px var(--mono); border: 1px solid var(--k-4); border-radius: 99px; padding: 1px 7px; color: var(--bone-2); }
.addperson { display: grid; grid-template-columns: 1fr 1.4fr 130px auto; gap: 8px; padding: 18px 20px; align-items: center; }
.addperson h3 { grid-column: 1 / -1; margin: 0; font-size: 14px; }
.addperson .hint { grid-column: 1 / -1; margin: 0; }
@media (max-width: 760px) { .tiles { grid-template-columns: 1fr 1fr; } .addperson { grid-template-columns: 1fr; } }

/* ================= LIGHT THEME =================
   Same light-table idea, by day: warm paper-grey desk, white paper, darker process inks so text stays readable. */
:root[data-theme="light"] {
  --k-0: #eceae4; --k-1: #f7f6f2; --k-2: #efede7; --k-3: #dcd8cf; --k-4: #c4bfb4;
  --bone: #16181c; --bone-2: #4a4d54; --bone-3: #6f6b64;
  --paper: #ffffff; --paper-2: #f4f2ed;
  --c: #0b93b8; --c-dim: rgba(11, 147, 184, .14); --c-ink: #0a6f8a;
  --m: #c8106b; --m-dim: rgba(200, 16, 107, .10);
  --y: #9a7a00; --y-dim: rgba(185, 150, 0, .14);
  color-scheme: light;
}
:root[data-theme="light"] .glass {
  background:
    radial-gradient(ellipse 70% 60% at 50% 45%, rgba(255, 255, 255, .7), transparent 70%),
    repeating-linear-gradient(0deg, rgba(22, 24, 28, .035) 0 1px, transparent 1px 10px),
    repeating-linear-gradient(90deg, rgba(22, 24, 28, .035) 0 1px, transparent 1px 10px),
    repeating-linear-gradient(0deg, rgba(22, 24, 28, .06) 0 1px, transparent 1px 50px),
    repeating-linear-gradient(90deg, rgba(22, 24, 28, .06) 0 1px, transparent 1px 50px),
    #e6e3dc;
}
:root[data-theme="light"] .drop { border-color: rgba(22, 24, 28, .3); background: rgba(255, 255, 255, .45); }
:root[data-theme="light"] .desk-bar { background: rgba(247, 246, 242, .94); }
:root[data-theme="light"] .btn:hover, :root[data-theme="light"] .settab:hover { border-color: var(--k-4); }
:root[data-theme="light"] .btn.primary { color: #fff; }
:root[data-theme="light"] .btn.primary:hover { background: #0a7fa0; border-color: #0a7fa0; }
:root[data-theme="light"] .ghost-slip { background: repeating-linear-gradient(0deg, rgba(22, 24, 28, .05) 0 1px, transparent 1px 12px); }
:root[data-theme="light"] .a4, :root[data-theme="light"] .slip, :root[data-theme="light"] .stage img { box-shadow: 0 1px 2px rgba(0, 0, 0, .08), 0 8px 24px rgba(0, 0, 0, .08); }
:root[data-theme="light"] .reg-corner { color: rgba(11, 147, 184, .5); }
:root[data-theme="light"] dialog.drawer::backdrop, :root[data-theme="light"] dialog.ask::backdrop { background: rgba(30, 32, 36, .35); }
:root[data-theme="light"] .ch-bubble { box-shadow: 0 10px 30px rgba(0, 0, 0, .18); border: 1px solid var(--k-3); }
/* yellow "please check" text: pale yellow only works on dark; use dark amber by day */
:root[data-theme="light"] .note.check, :root[data-theme="light"] .warnline { color: #6b5400; }
:root[data-theme="light"] .note.check::before, :root[data-theme="light"] .warnline { border-left-color: #b08c00; }
:root[data-theme="light"] .btn.keyneeded { color: #6b5400; border-color: #b08c00; background: #fff6cf; }
:root[data-theme="light"] .btn.keyneeded:hover { background: #ffef9e; border-color: #8a6d00; }
:root[data-theme="light"] .region.warn:not(.ok) .edge { border-color: #9a7a00; }
:root[data-theme="light"] .note.conflict { color: #9c0f55; }

/* ---------- account menu (top bar) ---------- */
.bar-end { display: flex; align-items: center; gap: 12px; margin-left: auto; }
#usermenu { position: relative; }
#usermenu .chip { display: inline-flex; align-items: center; gap: 8px; height: 38px; padding: 0 12px 0 4px; border: 1px solid var(--k-3); border-radius: 999px; background: var(--k-2); color: var(--bone); }
#usermenu .chip:hover, #usermenu .chip[aria-expanded=true] { border-color: var(--k-4); }
#usermenu .av { width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; font: 600 12px var(--ui); background: var(--c); color: #04212b; position: relative; letter-spacing: .02em; }
#usermenu .av .st { position: absolute; right: -2px; bottom: -2px; width: 11px; height: 11px; border-radius: 50%; border: 2px solid var(--k-2); background: var(--bone-3); }
#usermenu .av .st.on { background: #3ddc84; }
#usermenu .nm { font-size: 14px; font-weight: 500; max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
#usermenu .caret { width: 7px; height: 7px; border-right: 1.5px solid var(--bone-3); border-bottom: 1.5px solid var(--bone-3); transform: rotate(45deg) translateY(-2px); margin-left: 2px; }
.umenu { position: absolute; right: 0; top: calc(100% + 8px); width: 280px; background: var(--k-1); border: 1px solid var(--k-3); border-radius: 12px; box-shadow: 0 16px 40px rgba(0, 0, 0, .35); padding: 6px; z-index: 30; animation: umdrop .16s var(--ease); }
@keyframes umdrop { from { opacity: 0; transform: translateY(-4px); } }
.umenu .mh { padding: 10px 10px 9px; border-bottom: 1px solid var(--k-3); margin-bottom: 4px; }
.umenu .mh b { display: block; font-size: 15px; }
.umenu .mh small { color: var(--bone-3); font-size: 13px; line-height: 1.4; display: block; overflow-wrap: anywhere; }
.umenu .mstatus { display: flex; align-items: center; gap: 8px; padding: 8px 10px; font-size: 13px; color: var(--bone-2); }
.umenu .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--bone-3); flex: none; }
.umenu .dot.on { background: #3ddc84; box-shadow: 0 0 0 3px rgba(61, 220, 132, .18); }
.umenu .sep { height: 1px; background: var(--k-3); margin: 4px 6px; }
.umenu .mi { display: flex; align-items: center; gap: 10px; width: 100%; text-align: left; padding: 9px 10px; border: 0; background: none; border-radius: 8px; font-size: 14.5px; color: var(--bone); text-decoration: none; }
.umenu .mi:hover, .umenu .mi:focus-visible { background: var(--k-2); outline: none; }
.umenu .mi svg { width: 17px; height: 17px; stroke: var(--bone-3); fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.umenu .mi .tag { margin-left: auto; color: var(--bone-3); }
.umenu .mi.danger { color: var(--m); } .umenu .mi.danger svg { stroke: var(--m); }
#usermenu .offline { font-style: normal; font: 500 10px var(--mono); color: var(--y); border: 1px solid var(--y); border-radius: 4px; padding: 0 4px; }
dialog.pwbox form { display: grid; gap: 12px; }
dialog.pwbox .lab { display: grid; gap: 5px; font-size: 13px; color: var(--bone-2); }
dialog.pwbox .field { margin: 0; }
dialog.pwbox .row-end { display: flex; align-items: center; gap: 8px; margin-top: 4px; }
@media (max-width: 640px) { #usermenu .nm { display: none; } }
.bar { z-index: 40; } /* the account menu drops over the page below */

/* ---------- credits on the bar ---------- */
#usermenu { display: flex; align-items: center; gap: 10px; }
.credits { display: inline-flex; align-items: baseline; gap: 5px; height: 38px; padding: 0 12px; border: 1px solid var(--k-3); border-radius: 999px; background: var(--k-2); color: var(--bone-2); position: relative; overflow: hidden; }
.credits:hover { border-color: var(--k-4); }
.credits .cl { font-size: 12px; align-self: center; }
.credits b { font: 600 15px var(--mono); color: var(--bone); align-self: center; }
.credits .co { font: 500 12px var(--mono); color: var(--bone-3); align-self: center; }
.credits .cbar { position: absolute; left: 12px; right: 12px; bottom: 5px; height: 2px; background: var(--k-3); border-radius: 2px; overflow: hidden; }
.credits .cbar i { display: block; height: 100%; width: 100%; background: var(--c); transform-origin: left; transition: transform .4s var(--ease); }
.credits.low b { color: var(--y); } .credits.low .cbar i { background: var(--y); }
.credits.out b { color: var(--m); } .credits.out .cbar i { background: var(--m); }
.umenu .mcredits { padding: 4px 10px 6px; }
.umenu .mrow { display: flex; justify-content: space-between; gap: 10px; font-size: 13.5px; padding: 3px 0; }
.umenu .mrow b { font: 600 13.5px var(--mono); }
.umenu .mrow.sub { color: var(--bone-3); font-size: 12.5px; padding-top: 0; }
.limitcell { min-width: 120px; } .limitcell .field { width: 90px; padding: 5px 8px; }
.limitcell small { display: block; color: var(--bone-3); font-size: 12px; margin-top: 3px; } .limitcell small.out { color: var(--m); }
.admincard .cardhead .hint { margin: 6px 0 0; } .admincard .y { color: var(--y); }
@media (max-width: 760px) { .credits .cl, .credits .co { display: none; } }
/* shuffled sets */
.setpick { display: inline-flex; align-items: center; gap: 8px; }
.setpick .lbl { font-size: 13px; color: var(--bone-2); }
.setpick .seg button { min-width: 34px; font-family: var(--mono); }
.a4 .setmark { position: absolute; top: 18px; right: 28px; font: 700 15px var(--serif); color: var(--ink); letter-spacing: .04em; }

/* ---------- question bank ---------- */
.bank { height: 100%; overflow-y: auto; padding: 26px clamp(16px, 4vw, 48px) 110px; box-sizing: border-box; }
.bankhead { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; margin-bottom: 18px; }
.bankhead h1 { margin: 4px 0 4px; font-size: 28px; font-weight: 600; } .bankhead .hint { margin: 0; max-width: 680px; }
.bankfilters { display: flex; flex-wrap: wrap; gap: 10px; align-items: flex-end; padding: 14px; background: var(--k-1); border: 1px solid var(--k-3); border-radius: 12px; margin-bottom: 16px; position: sticky; top: -26px; z-index: 2; }
.bf { display: grid; gap: 4px; font-size: 12px; color: var(--bone-3); min-width: 130px; } .bf.grow { flex: 1; min-width: 220px; }
.banklist { display: grid; gap: 10px; }
.bq { display: grid; grid-template-columns: 34px 1fr; gap: 6px; background: var(--paper); color: var(--ink); border-radius: 4px; padding: 14px 16px 12px 8px; border: 2px solid transparent; }
.bq.on { border-color: var(--c); }
.bq .pick { display: flex; justify-content: center; padding-top: 3px; } .bq .pick input { width: 18px; height: 18px; accent-color: var(--c-ink); }
.bqtext { font: 16px/1.5 var(--serif); }
.bqopts { display: flex; flex-wrap: wrap; gap: 6px 24px; margin-top: 6px; font: 15px/1.45 var(--serif); color: var(--ink-2); }
.bqans { margin-top: 6px; font: 500 13px var(--ui); color: var(--ink-2); }
.bq .fig { max-height: 140px; max-width: 60%; margin-top: 6px; }
.bqtags { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; margin-top: 10px; padding-top: 10px; border-top: 1px dashed #d7d3ca; font: 13px var(--ui); }
.bqtags .tag { width: 120px; padding: 4px 8px; font-size: 13px; background: #fff; color: var(--ink); border-color: #d7d3ca; }
.bqtags .diff { width: 96px; } .bqtags .diff.easy { color: #0a7a3c; } .bqtags .diff.hard { color: #b0165f; }
.bqtags .tagtype { color: #6c6f76; font: 500 12px var(--mono); }
.bqtags .used { color: #6c6f76; margin-left: auto; } .bqtags .used.recent { color: #8a6400; font-weight: 600; }
.bqtags .rm { color: #8a877f; font-size: 12.5px; }
.banktray { position: fixed; left: 50%; bottom: 18px; transform: translate(-50%, 140%); display: flex; align-items: center; gap: 14px; width: min(640px, calc(100vw - 32px)); padding: 10px 12px 10px 18px; background: var(--k-1); border: 1px solid var(--k-4); border-radius: 14px; box-shadow: 0 14px 40px rgba(0, 0, 0, .35); transition: transform .25s var(--ease); z-index: 20; }
.banktray.on { transform: translate(-50%, 0); }
.setpick .seg button { white-space: nowrap; padding: 5px 8px; }
.desk-bar { flex-wrap: wrap; row-gap: 8px; }
.desk-bar .grow { min-width: 160px; }
.beta { display: inline-block; margin-left: 8px; padding: 1px 6px; border-radius: 4px; font: 600 10px var(--mono); letter-spacing: .08em; color: var(--y); border: 1px solid var(--y); vertical-align: middle; }
.umenu .mi .beta { margin-left: auto; }

/* ---------- OMR sheet settings ---------- */
dialog.omrbox { width: min(1080px, calc(100vw - 32px)); max-height: calc(100vh - 32px); border: 1px solid var(--k-3); border-radius: 14px; background: var(--k-1); color: var(--bone); padding: 0; }
dialog.omrbox::backdrop { background: rgba(5, 6, 8, .6); }
.omrform { display: flex; flex-direction: column; max-height: calc(100vh - 34px); }
.omrhead, .omrfoot { display: flex; align-items: center; gap: 12px; padding: 14px 20px; border-bottom: 1px solid var(--k-3); }
.omrfoot { border-bottom: 0; border-top: 1px solid var(--k-3); }
.omrhead h2 { margin: 0; font-size: 18px; flex: 1; }
.omrgrid { display: grid; grid-template-columns: 360px 1fr; min-height: 0; flex: 1; overflow: hidden; }
.omrset { overflow-y: auto; padding: 8px 20px 20px; border-right: 1px solid var(--k-3); }
.omrset section { padding: 12px 0; border-bottom: 1px solid var(--k-3); display: grid; gap: 8px; }
.omrset h3 { margin: 0; font-size: 13px; }
.omrset .lab { display: flex; align-items: center; justify-content: space-between; gap: 10px; font-size: 13.5px; color: var(--bone-2); }
.omrset .lab.dim { opacity: .45; }
.ropt { display: flex; gap: 9px; align-items: flex-start; font-size: 14px; cursor: pointer; }
.ropt input { margin-top: 3px; accent-color: var(--c); }
.ropt small { display: block; color: var(--bone-3); font-size: 12.5px; line-height: 1.4; }
.omrprev { overflow-y: auto; padding: 16px; background: var(--k-0); display: grid; align-content: start; gap: 10px; justify-items: center; }
.omrprev img { width: min(560px, 100%); box-shadow: 0 6px 24px rgba(0, 0, 0, .35); background: #fff; }
.omrsum { margin: 0; text-align: center; } .omrsum b { color: var(--bone); }
@media (max-width: 820px) { .omrgrid { grid-template-columns: 1fr; overflow-y: auto; } .omrset { border-right: 0; } }

/* ---------- OMR results ---------- */
.results { height: 100%; overflow-y: auto; padding: 26px clamp(16px, 4vw, 48px) 60px; box-sizing: border-box; display: grid; gap: 18px; align-content: start; }
.reshead { display: flex; justify-content: space-between; align-items: flex-end; gap: 16px; }
.reshead h1 { margin: 4px 0; font-size: 26px; font-weight: 600; } .reshead .hint { margin: 0; max-width: 700px; }
.resdrop { border: 1.5px dashed var(--k-4); border-radius: 12px; padding: 22px; text-align: center; display: grid; gap: 10px; justify-items: center; background: var(--k-1); }
.resdrop.over { border-color: var(--c); background: var(--c-dim); } .resdrop.busy { border-style: solid; }
.resdrop p { margin: 0; } .results .tiles { margin: 0; }
.resbar { display: flex; align-items: center; gap: 8px; }
.pctbar { display: inline-block; vertical-align: middle; width: 120px; height: 7px; border-radius: 4px; background: var(--k-3); overflow: hidden; }
.pctbar i { display: block; height: 100%; background: var(--c); transform-origin: left; }
.pctbar.low i { background: var(--m); } .pctbar.high i { background: #3ddc84; }
.resfoot { margin: 0; } .results .admincard .tiles .y, .results .tile b.y { color: var(--y); }
.fixans { display: grid; grid-template-columns: repeat(auto-fill, minmax(72px, 1fr)); gap: 6px; }
.fixans label { display: flex; align-items: center; gap: 4px; font: 500 12px var(--mono); color: var(--bone-3); }
.fixans label span { min-width: 22px; text-align: right; }
.fixans input { width: 100%; padding: 4px 6px; text-transform: uppercase; }
.fixans label.flag input { border-color: var(--y); background: var(--y-dim); }
.results { display: block; } .results > * + * { margin-top: 18px; }

/* ---------- Arrange bar: tidy, with Export and OMR menus ---------- */
.desk-bar { flex-wrap: nowrap; gap: 8px; }
.deskstatus { display: flex; gap: 6px; align-items: center; min-width: 0; }
.tagchip { display: inline-flex; align-items: center; height: 26px; padding: 0 10px; border-radius: 999px; font: 500 12.5px var(--ui); white-space: nowrap; border: 1px solid var(--k-4); background: var(--k-2); color: var(--bone-2); }
.tagchip.y { color: var(--y); border-color: color-mix(in srgb, var(--y) 55%, transparent); background: var(--y-dim); cursor: pointer; }
.tagchip.ok { color: var(--c); border-color: color-mix(in srgb, var(--c) 45%, transparent); }
.pop { position: relative; }
.pop > summary { list-style: none; display: inline-flex; align-items: center; gap: 7px; cursor: pointer; }
.pop > summary::-webkit-details-marker { display: none; }
.pop > summary .caret { width: 6px; height: 6px; border-right: 1.5px solid currentColor; border-bottom: 1.5px solid currentColor; transform: rotate(45deg) translateY(-2px); opacity: .8; }
.pop[open] > summary .caret { transform: rotate(-135deg) translateY(-1px); }
.popin { position: absolute; right: 0; top: calc(100% + 8px); width: 280px; background: var(--k-1); border: 1px solid var(--k-3); border-radius: 12px; box-shadow: 0 16px 40px rgba(0, 0, 0, .35); padding: 8px; z-index: 30; display: grid; gap: 4px; animation: umdrop .16s var(--ease); }
.popin.wide { width: 310px; padding: 14px; gap: 12px; }
.popin .mi { display: grid; gap: 2px; text-align: left; padding: 9px 10px; border: 0; background: none; border-radius: 8px; font-size: 14.5px; color: var(--bone); cursor: pointer; }
.popin .mi:hover { background: var(--k-2); }
.popin .mi small { color: var(--bone-3); font-size: 12.5px; }
.poprow { display: flex; align-items: center; justify-content: space-between; gap: 10px; font-size: 13.5px; color: var(--bone-2); }
.popin .toggle { font-size: 14px; } .popin .toggle.sub { margin: -6px 0 0 24px; color: var(--bone-2); }
.popin .seg button { white-space: nowrap; padding: 5px 9px; }
.btn.wide { width: 100%; justify-content: center; margin-top: 2px; }
.resdrop .scanfrom { max-width: 560px; font-size: 13px; } .resdrop .scanfrom .linkbtn { display: inline; cursor: pointer; }