:root {
  --bg: #f5f4f0;
  --card: #ffffff;
  --ink: #1d2125;
  --muted: #646a70;
  --line: #e3e1db;
  --accent: #0f5c57;
  --accent-ink: #ffffff;
  --user: #e6f0ee;
  --filled: #1f7a4d;
  --checking: #9a6400;
  --error-bg: #fbeceb;
  --error: #9b2c24;
  --radius: 12px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #141618;
    --card: #1c1f22;
    --ink: #e8e6e1;
    --muted: #9aa0a6;
    --line: #2e3236;
    --accent: #4fb3a9;
    --accent-ink: #0c1413;
    --user: #1f2e2c;
    --filled: #6cc59a;
    --checking: #e0b155;
    --error-bg: #3a1f1d;
    --error: #f2a39b;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; } /* so classes like .button can't un-hide things */

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.top { max-width: 1120px; margin: 0 auto; padding: 24px 16px 8px; }
.top h1 { margin: 0; font-size: 1.5rem; letter-spacing: -0.01em; }
.top p { margin: 4px 0 0; color: var(--muted); max-width: 62ch; }

.layout {
  max-width: 1120px;
  margin: 0 auto;
  padding: 16px;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.chat, .panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

/* --- Chat ------------------------------------------------------------------ */
.chat { display: flex; flex-direction: column; height: calc(100vh - 180px); min-height: 460px; }

.messages { flex: 1; overflow-y: auto; padding: 16px; display: flex; flex-direction: column; gap: 10px; }

.msg {
  max-width: 85%;
  padding: 10px 14px;
  border-radius: var(--radius);
  white-space: pre-wrap; /* keeps the summary's line breaks */
  overflow-wrap: anywhere;
}
.msg.agent { align-self: flex-start; background: var(--bg); }
.msg.user { align-self: flex-end; background: var(--user); }
.msg.error { align-self: stretch; max-width: none; background: var(--error-bg); color: var(--error); }
.msg.typing { color: var(--muted); animation: pulse 1.2s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: 0.4; } }

.examples { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; padding: 0 16px 12px; }
.examples span { color: var(--muted); font-size: 0.9rem; }
.examples button {
  border: 1px solid var(--line);
  background: var(--card);
  color: var(--ink);
  border-radius: 999px;
  padding: 6px 12px;
  font: inherit;
  font-size: 0.9rem;
  cursor: pointer;
}
.examples button:hover { border-color: var(--accent); color: var(--accent); }

.composer { display: flex; gap: 8px; padding: 12px; border-top: 1px solid var(--line); }
.composer textarea {
  flex: 1;
  resize: none;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px 12px;
  font: inherit;
  color: var(--ink);
  background: var(--card);
}
.composer textarea:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

button#send, .button {
  border: 0;
  border-radius: 8px;
  padding: 10px 18px;
  background: var(--accent);
  color: var(--accent-ink);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
button:disabled { opacity: 0.5; cursor: default; }

/* --- Application panel ----------------------------------------------------- */
.panel { padding: 16px 18px; position: sticky; top: 16px; max-height: calc(100vh - 32px); overflow-y: auto; }
.panel-head { display: flex; justify-content: space-between; align-items: center; }
.panel h2 { margin: 0; font-size: 1.1rem; }
.panel h3 { margin: 18px 0 6px; font-size: 0.95rem; }

.badge { font-size: 0.8rem; padding: 2px 10px; border-radius: 999px; background: var(--bg); color: var(--muted); }
.badge[data-status="confirming"] { color: var(--checking); }
.badge[data-status="done"] { background: var(--accent); color: var(--accent-ink); }

.progress { height: 6px; background: var(--bg); border-radius: 999px; margin-top: 12px; overflow: hidden; }
#progress-bar { height: 100%; width: 0; background: var(--accent); transition: width 0.3s; }
.muted { color: var(--muted); font-size: 0.85rem; margin: 4px 0 8px; }

.fields { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); margin: 0; font-size: 0.9rem; }
.fields dt, .fields dd { margin: 0; padding: 6px 0; border-bottom: 1px solid var(--line); }
.fields dt { color: var(--muted); padding-right: 8px; }
.fields dd { overflow-wrap: anywhere; }
.fields dd.filled { color: var(--filled); font-weight: 600; }
.fields dd.checking { color: var(--checking); }
.fields dd.unknown { color: var(--muted); font-style: italic; }
.fields dd.open { color: var(--line); }

.coverage, .flags { margin: 0; padding-left: 18px; font-size: 0.9rem; }
.coverage li, .flags li { margin-bottom: 6px; }
.flags li { color: var(--checking); }

#download { margin-top: 16px; width: 100%; text-align: center; }
.link { display: block; margin: 12px auto 0; background: none; border: 0; color: var(--muted); text-decoration: underline; cursor: pointer; font: inherit; font-size: 0.85rem; }

/* --- Phones: stack the chat above the panel ------------------------------- */
@media (max-width: 800px) {
  .top { padding-top: 16px; }
  .top p { font-size: 0.95rem; }
  .layout { grid-template-columns: 1fr; padding: 12px 16px; }
  .chat { height: 70vh; min-height: 420px; }
  .panel { position: static; max-height: none; }
  .msg { max-width: 92%; }
}

/* --- Eval pages ------------------------------------------------------------ */
.nav { display: flex; gap: 16px; font-size: 0.9rem; margin-bottom: 8px; }
.nav a, .page a, .top a { color: var(--accent); }
.top .measured { margin-top: 6px; font-size: 0.9rem; }
.page { max-width: 1120px; margin: 0 auto; padding: 8px 16px 48px; }
.page h2 { font-size: 1.05rem; margin: 28px 0 8px; }
.meta { color: var(--muted); font-size: 0.9rem; }

.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; margin: 12px 0; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px 16px;
        display: flex; flex-direction: column; gap: 2px; font-size: 0.85rem; color: var(--muted); }
.card .big { font-size: 1.7rem; font-weight: 700; color: var(--ink); letter-spacing: -0.02em; }
.card.warn .big { color: var(--checking); }

.defs { padding-left: 18px; color: var(--muted); font-size: 0.92rem; max-width: 80ch; }
.defs li { margin-bottom: 6px; }
.defs strong { color: var(--ink); }
.samples { padding-left: 18px; }
.samples li { margin-bottom: 4px; }

.two-col { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 24px; }
.scroll { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.9rem; background: var(--card);
        border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
th, td { text-align: left; padding: 7px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 0.8rem; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
tr.current td { background: var(--user); }
tbody tr:last-child td { border-bottom: 0; }

.tag { display: inline-block; font-size: 0.78rem; padding: 1px 8px; border-radius: 999px; margin: 1px 4px 1px 0;
       background: var(--bg); }
.tag.correct { color: var(--filled); }
.tag.invented { background: var(--error-bg); color: var(--error); font-weight: 600; }
.tag.wrong { color: var(--error); }
.tag.missed { color: var(--checking); }
.problems { min-width: 160px; }

.messages.static { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
                   overflow: visible; }

@media (max-width: 800px) {
  .two-col { grid-template-columns: 1fr; }
  .card .big { font-size: 1.4rem; }
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
.nowrap { white-space: nowrap; }