:root {
  color: #17232b;
  background: #f5f7f9;
  font-family: system-ui, -apple-system, "Noto Sans", sans-serif;
  --panel: #fff;
  --line: #d7dee4;
  --muted: #61717d;
  --accent: #176b9b;
  --accent-soft: #e7f2f8;
  --bad: #b13f38;
}

* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; }
button, input, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}
.brand { flex: 1; }
.brand h1 { margin: 0 0 4px; font-size: 19px; }
.instruction, .progress, .help { color: var(--muted); font-size: 13px; }
.topbar .reviewer { flex: 0 0 210px; width: 210px; }

.layout {
  display: grid;
  grid-template-columns: 250px minmax(420px, 1fr) 360px;
  min-height: calc(100vh - 72px);
}
.queue, .form-panel { background: var(--panel); }
.queue { border-right: 1px solid var(--line); }
.form-panel { border-left: 1px solid var(--line); padding: 20px; }
.content { padding: 26px; }
.item-list { display: grid; }
.item-button {
  border: 0;
  border-bottom: 1px solid var(--line);
  border-left: 4px solid transparent;
  background: transparent;
  padding: 13px 14px;
  text-align: left;
}
.item-button:hover { background: #f0f4f6; }
.item-button.current { border-left-color: var(--accent); background: var(--accent-soft); }
.item-button.done::after { content: "  ✓"; color: #237a4b; }

.card {
  max-width: 900px;
  margin: 0 auto 14px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--panel);
}
.card h2 { margin: 0 0 8px; font-size: 21px; }
.description { margin: 0; color: var(--muted); line-height: 1.5; }
.fields { display: grid; grid-template-columns: max-content 1fr; gap: 9px 14px; }
.fields dt { color: var(--muted); }
.fields dd { margin: 0; white-space: pre-wrap; overflow-wrap: anywhere; }
.metadata { margin-top: 18px; font-size: 13px; color: var(--muted); }

.question { margin: 0 0 18px; }
fieldset.question { padding: 12px 13px; border: 1px solid var(--line); border-radius: 7px; }
.question legend, .question-label { display: block; margin-bottom: 7px; font-weight: 650; }
.required::after { content: " *"; color: var(--bad); }
.choices { display: grid; gap: 7px; }
.choice { display: flex; align-items: flex-start; gap: 8px; }
.choice input { width: auto; margin-top: 3px; }
input[type="text"], textarea {
  width: 100%;
  padding: 9px 10px;
  border: 1px solid #bcc8d0;
  border-radius: 7px;
  background: #fff;
}
textarea { resize: vertical; }
.actions { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.button {
  padding: 9px 12px;
  border: 1px solid #bcc8d0;
  border-radius: 7px;
  background: #fff;
}
.button.primary { border-color: var(--accent); background: var(--accent); color: #fff; }
.status { min-height: 22px; margin: 10px 0; color: var(--muted); font-size: 13px; }
.status.error { color: var(--bad); }

@media (max-width: 1050px) {
  .layout { grid-template-columns: 220px 1fr; }
  .form-panel { grid-column: 2; border-left: 0; border-top: 1px solid var(--line); }
  .queue { grid-row: 1 / 3; }
}
@media (max-width: 700px) {
  .topbar { position: static; display: grid; }
  .topbar .reviewer { flex-basis: auto; width: 100%; }
  .layout { display: block; }
  .queue { border-right: 0; border-bottom: 1px solid var(--line); }
  .item-list { display: flex; overflow-x: auto; }
  .item-button { min-width: 190px; border: 1px solid var(--line); }
  .content, .form-panel { padding: 14px; }
}