:root {
  --ink: #16191d;
  --ink-soft: #4b525b;
  --ink-faint: #858d97;
  --paper: #fbfaf7;
  --panel: #ffffff;
  --rule: #e4e1d9;
  --rule-strong: #cdc8bc;
  --accent: #1f3a5f;

  --red: #c0392b;
  --amber: #c9851a;
  --info: #2a6f97;
  --green: #2f7d4f;

  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --mono: "SF Mono", "JetBrains Mono", "Menlo", Consolas, monospace;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: 820px;
  margin: 0 auto;
  padding: 72px 28px 96px;
}

/* -- masthead -------------------------------------------------------- */
.masthead {
  border-bottom: 1px solid var(--rule);
  padding-bottom: 28px;
  margin-bottom: 36px;
}

.wordmark {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 2.6rem;
  letter-spacing: -0.01em;
  margin: 0 0 0.3rem;
  color: var(--ink);
}

.tagline {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.18rem;
  color: var(--ink-soft);
  margin: 0;
}

.coverage {
  font-size: 0.9rem;
  color: var(--ink-faint);
  line-height: 1.5;
  max-width: 66ch;
  margin: 0.7rem 0 0;
}

/* -- console --------------------------------------------------------- */
.field-label {
  display: block;
  font-size: 0.78rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 0.55rem;
}

.refs {
  width: 100%;
  min-height: 168px;
  resize: vertical;
  padding: 16px 18px;
  border: 1px solid var(--rule-strong);
  border-radius: 6px;
  background: var(--panel);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.92rem;
  line-height: 1.6;
}

.refs:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(31, 58, 95, 0.12);
}

.hint {
  font-size: 0.86rem;
  color: var(--ink-faint);
  margin: 0.7rem 0 1.3rem;
  max-width: 60ch;
}

.actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.action-btn {
  font-family: var(--sans);
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.01em;
  color: #fff;
  background: var(--accent);
  border: none;
  border-radius: 6px;
  padding: 11px 28px;
  cursor: pointer;
  transition: background 0.15s ease;
}

.action-btn:hover { background: #16304f; }
.action-btn:disabled { background: var(--rule-strong); cursor: progress; }

/* -- tabs ------------------------------------------------------------ */
.tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 28px;
  border-bottom: 1px solid var(--rule);
}
.tab {
  font-family: var(--sans);
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-faint);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  padding: 9px 14px;
  margin-bottom: -1px;
  cursor: pointer;
  transition: color 0.12s ease, border-color 0.12s ease;
}
.tab:hover { color: var(--ink-soft); }
.tab[aria-selected="true"] {
  color: var(--accent);
  border-bottom-color: var(--accent);
  font-weight: 600;
}

/* -- single-line inputs --------------------------------------------- */
.line-input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--rule-strong);
  border-radius: 6px;
  background: var(--panel);
  color: var(--ink);
  font-family: var(--mono);
  font-size: 0.92rem;
}
.line-input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(31, 58, 95, 0.12);
}
.field-row { display: flex; gap: 16px; }
.field-col { flex: 1 1 0; min-width: 0; }
.optional { text-transform: none; letter-spacing: 0; color: var(--rule-strong); }

/* -- entity chips (decompose) --------------------------------------- */
.entity-chips { display: flex; flex-direction: column; gap: 10px; margin-bottom: 26px; }
.entity-group { display: flex; align-items: center; flex-wrap: wrap; gap: 8px; }
.entity-kind {
  font-size: 0.72rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-faint);
  width: 70px;
  flex: none;
}
.entity-chip {
  font-family: var(--mono);
  font-size: 0.85rem;
  padding: 3px 11px;
  border-radius: 999px;
  background: #f1efe9;
  color: var(--ink-soft);
  border: 1px solid var(--rule);
}
.entity-chip[data-kind="disease"] { background: #f1ece4; }
.entity-chip[data-kind="gene"] { background: #e8eef0; color: var(--info); border-color: #cfe0e8; }
.entity-chip[data-kind="drug"] { background: #eef0e9; color: var(--green); border-color: #d6ddcd; }

.section-label, .empty {
  font-size: 0.78rem;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin: 0 0 14px;
}
.empty { text-transform: none; letter-spacing: 0; font-size: 0.92rem; color: var(--ink-soft); }
.verdict-title { font-family: var(--serif); font-style: italic; color: var(--ink-soft); }
.resolved { font-family: var(--mono); }

.status {
  font-size: 0.88rem;
  color: var(--ink-faint);
}
.status[data-kind="busy"] { color: var(--info); }
.status[data-kind="error"] { color: var(--red); }
.status[data-kind="done"] { color: var(--ink-soft); }

/* -- results --------------------------------------------------------- */
.results {
  margin-top: 44px;
  border-top: 1px solid var(--rule);
  padding-top: 32px;
}

.summary {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  font-size: 1rem;
  margin: 0 0 0.4rem;
}
.summary-sep { color: var(--ink-faint); }

.count-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.86rem;
  color: var(--ink-soft);
}
.count-n { font-variant-numeric: tabular-nums; font-weight: 600; }
.count-label { color: var(--ink-faint); }

.verdict {
  display: flex;
  align-items: center;
  gap: 9px;
  font-size: 0.9rem;
  color: var(--ink-soft);
  margin: 0 0 28px;
}
.verdict-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--ink-faint);
}

/* RAG dots — the one place colour earns its keep. */
.dot,
.card-dot,
.verdict-dot {
  display: inline-block;
  border-radius: 50%;
  flex: none;
}
.dot { width: 9px; height: 9px; }

[data-severity="red"] .dot,
.card-dot[data-severity="red"],
.verdict[data-severity="red"] .verdict-dot { background: var(--red); }
[data-severity="amber"] .dot,
.card-dot[data-severity="amber"],
.verdict[data-severity="amber"] .verdict-dot { background: var(--amber); }
[data-severity="info"] .dot,
.card-dot[data-severity="info"],
.verdict[data-severity="info"] .verdict-dot { background: var(--info); }
[data-severity="green"] .dot,
.card-dot[data-severity="green"],
.verdict[data-severity="green"] .verdict-dot { background: var(--green); }

/* -- reference cards ------------------------------------------------- */
.card {
  background: var(--panel);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--rule-strong);
  border-radius: 6px;
  padding: 18px 20px;
  margin-bottom: 16px;
}
.card[data-severity="red"] { border-left-color: var(--red); }
.card[data-severity="amber"] { border-left-color: var(--amber); }
.card[data-severity="info"] { border-left-color: var(--info); }
.card[data-severity="green"] { border-left-color: var(--green); }

.card-head {
  display: flex;
  align-items: baseline;
  gap: 11px;
}
.card-dot { width: 12px; height: 12px; transform: translateY(1px); }

.card-title {
  font-family: var(--serif);
  font-size: 1.12rem;
  font-weight: 600;
  line-height: 1.35;
  margin: 0;
  color: var(--ink);
}

.card-meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin: 8px 0 0 23px;
  font-size: 0.85rem;
  color: var(--ink-faint);
}
.doi { font-family: var(--mono); }
.meta-sep { color: var(--rule-strong); }
.pmid-link { color: var(--accent); text-decoration: none; border-bottom: 1px solid rgba(31,58,95,0.3); }
.pmid-link:hover { border-bottom-color: var(--accent); }

.flags {
  list-style: none;
  margin: 14px 0 0 23px;
  padding: 0;
}
.flag {
  display: flex;
  gap: 10px;
  padding: 8px 0;
  border-top: 1px solid var(--rule);
  font-size: 0.9rem;
  color: var(--ink-soft);
}
.flag-kind {
  flex: none;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 4px;
  height: fit-content;
  background: #f1efe9;
  color: var(--ink-soft);
}
.flag[data-severity="red"] .flag-kind { background: #f8e7e4; color: var(--red); }
.flag[data-severity="amber"] .flag-kind { background: #f8efdb; color: var(--amber); }
.flag[data-severity="info"] .flag-kind { background: #e3eff6; color: var(--info); }

.card-clean {
  margin: 10px 0 0 23px;
  font-size: 0.86rem;
  color: var(--green);
}

/* -- error & footer -------------------------------------------------- */
.error-box {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 16px 18px;
  border: 1px solid #e7c3bd;
  border-left: 3px solid var(--red);
  border-radius: 6px;
  background: #fcf3f1;
  color: var(--ink);
  font-size: 0.92rem;
}

.colophon {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 64px;
  padding-top: 20px;
  border-top: 1px solid var(--rule);
  font-size: 0.8rem;
  color: var(--ink-faint);
}

.sources {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

@media (max-width: 540px) {
  .page { padding: 48px 18px 72px; }
  .wordmark { font-size: 2.1rem; }
}