* { box-sizing: border-box; }
:root {
  color-scheme: light;
  --ink: #202536;
  --muted: #687084;
  --line: #dfe4ed;
  --panel: #ffffff;
  --bg: #f4f6f2;
  --accent: #1f6f5b;
  --accent-2: #315cf6;
  --warn: #9c5a16;
}
body {
  margin: 0;
  background: linear-gradient(135deg, #f5f7f1, #edf7f5 44%, #f8f4eb);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-font-smoothing: antialiased;
}
main { width: min(1360px, calc(100% - 28px)); margin: 0 auto; padding: 22px 0 44px; }
.top { display: flex; justify-content: space-between; gap: 16px; align-items: flex-start; margin-bottom: 18px; flex-wrap: wrap; }
.eyebrow { margin: 0 0 6px; color: var(--muted); font-weight: 800; font-size: 12px; text-transform: uppercase; letter-spacing: .14em; }
.eyebrow a { color: inherit; text-decoration: none; }
h1 { margin: 0; font-size: 32px; line-height: 1.05; letter-spacing: 0; }
.sub { margin: 8px 0 0; color: var(--muted); font-size: 15px; }
.actions, .editor-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.mini-actions { display: flex; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
button, .upload span {
  border: 0;
  background: var(--accent);
  color: #fff;
  padding: 9px 14px;
  border-radius: 8px;
  font-weight: 800;
  font-size: 14px;
  cursor: pointer;
}
button.secondary { background: #e8ecef; color: #283142; }
button:disabled { opacity: .55; cursor: default; }
.layout { display: grid; grid-template-columns: minmax(280px, 34%) 1fr; gap: 16px; align-items: start; }
.panel {
  background: rgba(255,255,255,.9);
  border: 1px solid rgba(32,37,54,.08);
  border-radius: 8px;
  box-shadow: 0 8px 28px rgba(38,52,71,.08);
  padding: 16px;
}
h2 { margin: 0 0 12px; font-size: 17px; letter-spacing: 0; }
.upload { display: inline-flex; margin-bottom: 12px; }
.upload input { display: none; }
.side-action { display: inline-flex; margin-left: 8px; }
.paper-meta { color: var(--muted); font-size: 13px; margin-bottom: 10px; line-height: 1.45; }
.helper.tight { margin-top: -4px; margin-bottom: 10px; }
.image-preview { display: grid; gap: 10px; max-height: min(58vh, 620px); overflow: auto; padding-right: 2px; }
.image-preview figure { margin: 0; border: 1px solid var(--line); border-radius: 8px; overflow: hidden; background: #fff; }
.image-preview img { display: block; width: 100%; height: auto; max-height: 360px; object-fit: contain; background: #f8fafc; }
.image-preview figcaption { padding: 8px 10px; color: var(--muted); font-size: 12px; overflow-wrap: anywhere; border-top: 1px solid #eef1f5; }
.missing-preview { min-height: 130px; display: grid; place-items: center; padding: 14px; color: var(--muted); background: #f8fafc; text-align: center; font-size: 13px; }
.reference-note { display: grid; gap: 6px; margin-top: 12px; padding: 12px; border: 1px solid #d7e5df; border-radius: 8px; background: #f6fbf8; font-size: 13px; line-height: 1.4; }
.reference-note span { color: var(--muted); }
.reference-note a { color: var(--accent); font-weight: 800; text-decoration: none; }
.workspace { min-width: 0; }
.tabs { display: flex; gap: 6px; margin-bottom: 12px; background: rgba(255,255,255,.62); padding: 5px; border-radius: 8px; border: 1px solid rgba(32,37,54,.08); width: fit-content; }
.tab { background: transparent; color: var(--muted); box-shadow: none; padding: 8px 12px; }
.tab.active { background: #fff; color: var(--accent); box-shadow: 0 2px 8px rgba(32,37,54,.08); }
.view { display: none; }
.view.active { display: block; }
.metrics { display: grid; grid-template-columns: repeat(4, minmax(120px, 1fr)); gap: 10px; margin-bottom: 14px; }
.metric { background: #fff; border: 1px solid rgba(32,37,54,.08); border-radius: 8px; padding: 14px; }
.metric strong { display: block; font-size: 26px; line-height: 1; font-variant-numeric: tabular-nums; }
.metric span { display: block; color: var(--muted); font-size: 12px; margin-top: 6px; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.focus-list { display: grid; gap: 8px; }
.focus-item { border: 1px solid var(--line); border-radius: 8px; padding: 10px; background: #fbfcfd; }
.focus-item b { display: block; margin-bottom: 4px; }
.focus-item small { color: var(--muted); line-height: 1.35; }
.profile-list { display: grid; grid-template-columns: 130px 1fr; gap: 8px 12px; margin: 0; font-size: 14px; }
.profile-list dt { color: var(--muted); }
.profile-list dd { margin: 0; font-weight: 650; }
.section-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 8px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 9px 10px; border-bottom: 1px solid #edf0f4; vertical-align: top; white-space: nowrap; }
th { color: var(--muted); text-transform: uppercase; letter-spacing: .04em; font-size: 11px; }
td.num, th.num { text-align: right; }
tr.selected { background: #edf8f5; }
tbody tr { cursor: pointer; }
.editor { margin-top: 14px; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.form-grid.compact { grid-template-columns: repeat(3, minmax(0, 1fr)); }
label { display: grid; gap: 5px; color: var(--muted); font-size: 12px; font-weight: 750; }
input, select, textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px 10px;
  color: var(--ink);
  font: inherit;
  background: #fff;
}
textarea { resize: vertical; }
.prompt-box { min-height: 240px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace; font-size: 12px; line-height: 1.55; white-space: pre; }
.import-panel { margin-top: 14px; }
.fallback-panel { background: rgba(255,255,255,.72); }
.helper { margin: -4px 0 10px; color: var(--muted); font-size: 13px; line-height: 1.4; }
.analyze-card .section-head { align-items: flex-start; }
.primary-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 12px;
  border: 1px solid #d7e5df;
  border-radius: 8px;
  background: #f6fbf8;
}
.primary-bar span { color: var(--muted); font-size: 13px; line-height: 1.35; }
.advanced-block { margin-top: 14px; }
.advanced-block summary {
  cursor: pointer;
  color: var(--accent);
  font-weight: 850;
  list-style-position: inside;
  user-select: none;
}
.advanced-block[open] summary { margin-bottom: 12px; }
.advanced-actions { justify-content: flex-start; margin-bottom: 10px; }
.status { min-height: 20px; margin-top: 8px; color: var(--muted); font-size: 13px; }
.status.error { color: #a33b2f; font-weight: 800; }
.wide { grid-column: 1 / -1; }
.editor-actions { margin-top: 12px; }
.controls { margin-bottom: 14px; }
.paper-output, .answer-output {
  background: #fff;
  border: 1px solid rgba(32,37,54,.12);
  border-radius: 8px;
  padding: 26px;
  box-shadow: 0 8px 28px rgba(38,52,71,.08);
}
.answer-output { margin-top: 16px; }
.worksheet-page, .answer-key-page {
  width: min(100%, 794px);
  min-height: 1123px;
  margin: 0 auto;
  color: #111;
  background: #fff;
  font-family: Arial, "Helvetica Neue", sans-serif;
}
.worksheet-head {
  display: grid;
  grid-template-columns: 1fr 108px;
  gap: 18px;
  align-items: start;
  border-bottom: 2px solid #111;
  padding-bottom: 12px;
  margin-bottom: 12px;
}
.worksheet-head h2 { font-size: 22px; margin: 0 0 7px; text-align: center; letter-spacing: 0; }
.worksheet-head p { margin: 3px 0; font-size: 13px; }
.score-box {
  border: 2px solid #111;
  min-width: 108px;
  min-height: 74px;
  display: grid;
  grid-template-rows: auto 1fr;
  align-items: center;
  justify-items: center;
  font-weight: 800;
}
.score-box span { width: 100%; padding: 5px 0; border-bottom: 1px solid #111; text-align: center; font-size: 12px; }
.score-box b { display: block; min-height: 38px; }
.quiz-section { margin-top: 12px; break-inside: avoid; }
.quiz-section h3 {
  margin: 0 0 8px;
  padding: 5px 8px;
  border: 1px solid #111;
  background: #f3f3f3;
  font-size: 14px;
  letter-spacing: 0;
}
.question { break-inside: avoid; margin-bottom: 10px; line-height: 1.4; font-size: 14px; }
.q-row { display: grid; grid-template-columns: 30px 1fr 62px; gap: 8px; align-items: start; }
.qnum { font-weight: 800; padding-top: 2px; }
.q-text { min-height: 20px; }
.mark-box { border: 1px solid #111; min-height: 24px; display: grid; place-items: center; font-size: 10px; text-align: center; padding: 2px; }
.answer-line { display: grid; grid-template-columns: auto 1fr; gap: 8px; align-items: end; margin-top: 8px; font-size: 13px; }
.answer-line i, .work-lines i, .column-work i, .rough-box i { border-bottom: 1px solid #777; height: 16px; display: block; }
.work-lines { margin-top: 8px; display: grid; gap: 6px; }
.column-work { width: min(260px, 80%); margin: 8px 0 0 auto; display: grid; gap: 7px; }
.rough-box { margin-top: 8px; border: 1px solid #777; padding: 8px; min-height: 82px; display: grid; gap: 7px; }
.rough-box span { color: #555; font-size: 11px; text-transform: uppercase; letter-spacing: .05em; }
.mini-table {
  display: grid;
  grid-template-columns: repeat(2, minmax(90px, 1fr));
  border: 1px solid #777;
  margin-top: 8px;
  max-width: 360px;
}
.mini-table i { height: 28px; border-right: 1px solid #777; border-bottom: 1px solid #777; }
.mini-table i:nth-child(2n) { border-right: 0; }
.mini-table i:nth-last-child(-n+2) { border-bottom: 0; }
.clock-line { display: grid; grid-template-columns: auto 1fr auto 1fr; gap: 8px; align-items: end; margin-top: 8px; max-width: 420px; font-size: 12px; }
.clock-line i { border-bottom: 1px solid #777; height: 18px; }
.shape-space { width: min(240px, 70%); height: 74px; border: 1px dashed #777; margin-top: 8px; }
.answer-key-page { min-height: 0; }
.answer-head { border-bottom: 2px solid #111; padding-bottom: 10px; margin-bottom: 14px; }
.answer-head h2 { margin: 0 0 4px; font-size: 20px; }
.answer-head p { margin: 0; color: #555; font-size: 12px; }
.answer-list { columns: 2; column-gap: 34px; padding-left: 0; list-style: none; font-size: 14px; }
.answer-list li { break-inside: avoid; display: grid; grid-template-columns: 30px 1fr; gap: 6px; margin-bottom: 9px; }
.answer-list small { grid-column: 2; color: #555; font-size: 12px; }
.empty { color: var(--muted); padding: 20px 0; text-align: center; }
.empty-cell { color: var(--muted); text-align: center; padding: 20px; }
.focus-item { display: grid; gap: 5px; }
.focus-item small strong { color: var(--accent); text-transform: uppercase; font-size: 11px; }
.profile-cards { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.profile-cards div { border: 1px solid var(--line); border-radius: 8px; padding: 11px; background: #fbfcfd; }
.profile-cards b { display: block; margin-bottom: 5px; font-size: 13px; }
.profile-cards span { display: block; color: var(--muted); font-size: 13px; line-height: 1.4; }
.example-list { display: grid; gap: 10px; }
.example-item { border: 1px solid var(--line); border-radius: 8px; padding: 12px; background: #fbfcfd; }
.example-item b { display: block; font-size: 13px; margin-bottom: 5px; color: var(--accent); }
.example-item p { margin: 0 0 8px; line-height: 1.45; }
.example-item small { color: var(--muted); font-weight: 750; }

@media (max-width: 920px) {
  .layout, .split { grid-template-columns: 1fr; }
  .metrics { grid-template-columns: repeat(2, minmax(120px, 1fr)); }
  .image-preview { max-height: 440px; }
}
@media (max-width: 560px) {
  main { width: min(100% - 20px, 1360px); padding-top: 14px; }
  h1 { font-size: 27px; }
  .metrics, .form-grid, .form-grid.compact { grid-template-columns: 1fr; }
  .profile-list { grid-template-columns: 1fr; gap: 2px; }
  .profile-cards { grid-template-columns: 1fr; }
  .paper-output, .answer-output { padding: 16px; }
  .prompt-box { font-size: 11px; }
  .section-head { align-items: stretch; flex-direction: column; }
  .mini-actions { justify-content: flex-start; }
}
@media print {
  @page { size: A4 portrait; margin: 12mm; }
  body { background: #fff; }
  main { width: 100%; padding: 0; }
  .top, aside, .tabs, .controls, #promptView, #analysisView, .style-guide, .advanced-block, .panel { display: none !important; }
  .layout, .workspace { display: block; }
  .view { display: block; }
  #worksheetView { display: block !important; }
  .paper-output, .answer-output { box-shadow: none; border: 0; padding: 0; min-height: 0; }
  body[data-print-mode="worksheet"] .answer-output { display: none !important; }
  body[data-print-mode="answers"] .paper-output { display: none !important; }
  body[data-print-mode="answers"] .answer-output { display: block !important; }
  .worksheet-page, .answer-key-page { width: auto; min-height: 0; }
  .question { margin-bottom: 8px; }
}