:root {
  color-scheme: light;
  --ground: #f0f3f4;
  --surface: #fff;
  --raised: #f7f9f9;
  --active: #e5ebea;
  --border: #e1e7e7;
  --control: #aebbbc;
  --text: #202a2c;
  --muted: #526264;
  --primary: #233d35;
  --positive: #245a40;
  --positive-bg: #edf5ef;
  --negative: #8b2929;
  --negative-bg: #fff3f1;
  --focus: #25674f;
  --radius: 6px;
  --gap: 24px;
  --font: Thonburi, "Leelawadee UI", Tahoma, sans-serif;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--ground); color: var(--text); font: 16px/1.65 var(--font); }
button, input, textarea, select { font: inherit; color: inherit; }
button, input, select { min-height: 44px; }
button { padding: 9px 16px; border: 1px solid var(--control); border-radius: var(--radius); background: var(--surface); cursor: pointer; line-height: 1.5; }
button:hover:not(:disabled) { border-color: var(--primary); }
button:active:not(:disabled) { transform: translateY(1px); }
button:disabled { cursor: not-allowed; background: var(--raised); color: var(--muted); border-color: var(--border); }
a { color: var(--primary); text-underline-offset: 3px; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
h1, h2, h3, p { margin: 0; }
h1 { font-size: 24px; line-height: 1.5; font-weight: 700; }
h2 { font-size: 18px; line-height: 1.6; font-weight: 600; }
h3 { font-size: 16px; font-weight: 600; }
p + p { margin-top: 8px; }
fieldset { min-width: 0; border: 0; margin: 0; padding: 0; }
label { display: grid; gap: 6px; font-size: 14px; font-weight: 500; }
input:not([type="checkbox"]), textarea, select { width: 100%; min-width: 0; padding: 8px 11px; background: var(--surface); border: 1px solid var(--control); border-radius: var(--radius); }
textarea { resize: vertical; min-height: 92px; }
input:disabled, textarea:disabled { color: var(--muted); background: var(--raised); }
input[type="checkbox"] { width: 20px; min-width: 20px; height: 20px; min-height: 20px; margin: 3px 0 0; accent-color: var(--primary); }
.primary { background: var(--primary); border-color: var(--primary); color: var(--surface); font-weight: 600; }
.secondary { background: var(--surface); }
.text-button { border-color: transparent; background: transparent; }
.danger-text { color: var(--negative); }
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 76px; padding: 12px 0; }
.wordmark { flex-shrink: 0; font-size: 24px; line-height: 1.2; font-weight: 700; text-decoration: none; color: var(--primary); }
.wordmark span { font-size: 14px; font-weight: 400; color: var(--muted); }
.scope, .meta, .field-help { color: var(--muted); font-size: 14px; }
.meta { overflow-wrap: anywhere; }
.intro { color: var(--muted); margin-top: 8px; }
.notice { padding: 12px 16px; margin-top: 16px; background: var(--raised); font-size: 14px; overflow-wrap: anywhere; }
.error { background: var(--negative-bg); color: var(--negative); }
.success { color: var(--positive); background: var(--positive-bg); }
.field-stack { display: grid; gap: 16px; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.span-all { grid-column: 1 / -1; }
.check-row { display: flex; align-items: flex-start; gap: 12px; min-height: 44px; padding: 8px 0; }
.actions { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; }
.section-heading { display: flex; align-items: flex-start; justify-content: space-between; flex-wrap: wrap; gap: 8px 16px; margin-bottom: 16px; }
.handoff { display: flex; flex-wrap: wrap; gap: 8px 20px; list-style: none; padding: 12px 0; margin: 16px 0 24px; font-size: 14px; color: var(--muted); border-block: 1px solid var(--border); }
.handoff li[aria-current="step"] { color: var(--positive); font-weight: 600; }
.handoff li:not(:last-child)::after { content: " →"; margin-left: 12px; color: var(--muted); }
.customer-width { width: min(100% - 48px, 760px); margin-inline: auto; }
.customer-sheet { padding: 28px 32px; margin-bottom: 32px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); }
.customer-sheet section + section { margin-top: 28px; }
.customer-sheet section > h2 { margin-bottom: 16px; }
.approved-items { display: grid; gap: 16px; }
.approved-item { padding: 16px; background: var(--raised); overflow-wrap: anywhere; }
.approved-item h3 { margin-bottom: 12px; }
.facts { margin: 0; display: grid; gap: 6px; }
.facts div { display: grid; grid-template-columns: minmax(100px, 1fr) minmax(0, 2fr); gap: 12px; }
.facts dt { color: var(--muted); font-size: 14px; }
.facts dd { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; }
.num { font-variant-numeric: tabular-nums; text-align: right; }
.success-panel { padding: 20px; background: var(--positive-bg); }
.success-panel h2 { color: var(--positive); }
.customer-footer { margin-top: 28px; padding-top: 20px; border-top: 1px solid var(--border); }
.customer-footer p { margin-top: 12px; }
.staff-frame { margin-inline: 24px; }
.staff-sheet { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; margin-bottom: 24px; }
.login-sheet { width: min(100%, 520px); margin: 24px auto; }
.login-sheet form { margin-top: 24px; }
.skip-link { position: absolute; left: 16px; top: -100px; padding: 12px; background: var(--surface); z-index: 5; }
.skip-link:focus { top: 8px; }
.workspace-heading { display: flex; align-items: flex-start; justify-content: space-between; flex-wrap: wrap; gap: 16px; }
.workspace-nav { display: flex; gap: 8px; margin-top: 16px; }
.workspace-nav button[aria-pressed="true"] { background: var(--active); border-color: var(--active); }
/* Fluid working sheet: usable width = queue 288px + gap 24px + detail. */
.queue-layout { display: grid; grid-template-columns: 288px minmax(0, 1fr); gap: var(--gap); align-items: start; }
.queue-pane { background: var(--raised); padding: 16px; border-radius: var(--radius); }
.queue-heading { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 12px; }
.queue-heading button { padding-inline: 10px; }
.queue-list { list-style: none; padding: 0; margin: 16px 0 0; display: grid; gap: 8px; }
.queue-row { display: grid; width: 100%; text-align: left; padding: 12px; border: 1px solid var(--border); background: var(--surface); gap: 4px; overflow-wrap: anywhere; }
.queue-row[aria-pressed="true"] { background: var(--active); border-color: var(--control); }
.queue-row .meta { font-size: 13px; }

.status { font-size: 13px; color: var(--positive); }
.detail-pane { min-width: 0; }
.empty { padding: 24px; background: var(--raised); color: var(--muted); }
.detail-header { margin-bottom: 20px; }
.detail-block { padding: 20px 0; border-top: 1px solid var(--border); }
.detail-block > h3, .detail-block > h2 { margin-bottom: 16px; }
.review-item { border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin-bottom: 16px; }
.review-item legend { padding-inline: 6px; font-size: 14px; font-weight: 600; }
.review-item .actions { margin-top: 12px; justify-content: flex-end; }
.item-toolbar { margin-block: 16px; }
.mutation-status:empty { display: none; }
.link-copy { display: flex; gap: 8px; margin-top: 8px; }
.link-copy input { flex: 1; }
.evidence-well { padding: 16px; background: var(--raised); }
.sale-item { display: grid; gap: 12px; padding-top: 16px; margin-top: 16px; border-top: 1px solid var(--border); }
.source-note { margin-top: 16px; }
.source-note summary { cursor: pointer; color: var(--muted); padding: 8px 0; min-height: 44px; }
.source-note .facts { padding: 12px 0; }
.source-reply { white-space: pre-wrap; overflow-wrap: anywhere; margin-block: 12px; }
.lookup-form { display: flex; gap: 12px; align-items: flex-end; max-width: 640px; margin-top: 16px; }
.lookup-form label { flex: 1; }
.lookup-results { display: grid; gap: 24px; margin-top: 24px; max-width: 900px; }
.lookup-results h2 { margin-bottom: 12px; }
.lookup-record { padding: 16px 0; border-top: 1px solid var(--border); }
.lookup-record p { overflow-wrap: anywhere; }
.mobile-back { display: none; margin-bottom: 16px; }
.unsaved { color: var(--negative); font-size: 14px; margin-top: 8px; }
@media (max-width: 1099px) {
  .queue-layout { grid-template-columns: minmax(0, 1fr); }
  .queue-pane { padding: 16px; }
  body[data-pane="detail"] .queue-pane { display: none; }
  body:not([data-pane="detail"]) .detail-pane { display: none; }
  .mobile-back { display: inline-flex; }
}
@media (max-width: 640px) {
  body { font-size: 16px; }
  .customer-width { width: calc(100% - 32px); }
  .customer-sheet { padding: 20px 16px; }
  .topbar { min-height: 64px; }
  .topbar .scope { font-size: 12px; text-align: right; }
  .staff-frame { margin-inline: 16px; }
  .staff-sheet { padding: 16px; }
  h1 { font-size: 22px; }
  .handoff { gap: 8px 12px; }
  .handoff li:not(:last-child)::after { margin-left: 6px; }
  .form-grid { grid-template-columns: minmax(0, 1fr); }
  .approved-item { padding: 12px; }
  .facts div { grid-template-columns: minmax(90px, 1fr) minmax(0, 2fr); gap: 8px; }
  .review-item { padding: 12px; }
  .lookup-form { flex-wrap: wrap; }
  .lookup-form label { flex-basis: 100%; }
  .link-copy { flex-wrap: wrap; }
  .link-copy input { flex-basis: 100%; }
  .workspace-heading .actions { width: 100%; }
  .wordmark span { font-size: 12px; }
}
@media (prefers-reduced-motion: reduce) { button:active:not(:disabled) { transform: none; } }