:root {
  --bg: #f7f7f5;
  --panel: #ffffff;
  --text: #1d1f21;
  --muted: #5d6166;
  --line: #d9dbde;
  --accent: #1f5fae;
  --accent-text: #ffffff;
  --warn: #8a5a00;
  --warn-bg: #fff6e0;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171a;
    --panel: #1e2125;
    --text: #e6e7e9;
    --muted: #a3a8ae;
    --line: #34383e;
    --accent: #6ea8ff;
    --accent-text: #0b1220;
    --warn: #f2c56b;
    --warn-bg: #2d2615;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", sans-serif;
}

header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

header h1 { font-size: 17px; margin: 0; flex: 1; }
.who { color: var(--muted); font-size: 13px; }

main {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 300px;
  gap: 16px;
  max-width: 1100px;
  margin: 16px auto;
  padding: 0 16px;
}

@media (max-width: 760px) {
  main { grid-template-columns: 1fr; }
}

.chat, .sources {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}

.transcript { list-style: none; margin: 0 0 16px; padding: 0; }
.transcript li { margin: 0 0 14px; white-space: pre-wrap; overflow-wrap: anywhere; }
.transcript .role { display: block; font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }
.transcript .notice { background: var(--warn-bg); color: var(--warn); padding: 8px 10px; border-radius: 6px; }
.transcript sup { color: var(--accent); font-weight: 600; margin-left: 1px; }

.sources h2, .proposal h2 { font-size: 14px; margin: 0 0 8px; }
.sources ol { padding-left: 20px; margin: 0 0 12px; }
.sources li { margin-bottom: 8px; overflow-wrap: anywhere; }
.sources .title { display: block; font-weight: 600; }
.sources .src { color: var(--muted); font-size: 13px; }

.proposal { border: 1px solid var(--accent); border-radius: 8px; padding: 12px; margin-bottom: 16px; }
.proposal dt { font-weight: 600; font-size: 13px; }
.proposal dd { margin: 0 0 8px; }
.pre { white-space: pre-wrap; overflow-wrap: anywhere; max-height: 200px; overflow: auto; }

textarea {
  width: 100%;
  font: inherit;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--bg);
  color: var(--text);
}

.actions { display: flex; gap: 8px; margin-top: 8px; flex-wrap: wrap; }

button {
  font: inherit;
  padding: 6px 14px;
  border-radius: 6px;
  border: 1px solid var(--accent);
  background: var(--accent);
  color: var(--accent-text);
  cursor: pointer;
}

button.quiet { background: transparent; color: var(--accent); }
button:disabled { opacity: .5; cursor: default; }

.page-status { max-width: 1100px; margin: 8px auto 0; padding: 0 16px; }
.status, .hint { color: var(--muted); font-size: 13px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }