:root {
  color-scheme: light dark;
  --bg: #0d1117;
  --panel: #161b22;
  --panel-2: #1c2330;
  --border: #2a3240;
  --fg: #e6edf3;
  --muted: #8b949e;
  --accent: #56b6c2;
  --accent-2: #7ee787;
  --user: #1f6feb;
  --danger: #f85149;
  --radius: 10px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f8fa;
    --panel: #ffffff;
    --panel-2: #f0f3f6;
    --border: #d0d7de;
    --fg: #1f2328;
    --muted: #636c76;
    --accent: #0969da;
    --accent-2: #1a7f37;
    --user: #0969da;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.5;
}

header {
  border-bottom: 1px solid var(--border);
  background: var(--panel);
  padding: 1rem 1.25rem;
}

.wrap { max-width: 900px; margin: 0 auto; }

h1 {
  margin: 0;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

h1 code { font-family: var(--mono); color: var(--accent); }

.tagline { margin: 0.35rem 0 0; color: var(--muted); font-size: 0.85rem; }

main { padding: 1.25rem; }

.status {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.75rem;
  flex-wrap: wrap;
}

.dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--muted); flex: none;
}
.dot.ok { background: var(--accent-2); }
.dot.bad { background: var(--danger); }
.dot.busy { background: #d29922; }

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

#transcript {
  padding: 1rem;
  min-height: 260px;
  max-height: 55vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.msg { display: flex; gap: 0.65rem; align-items: flex-start; }
.msg .who {
  flex: none;
  width: 3.6rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  padding-top: 0.2rem;
}
.msg.user .who { color: var(--user); }
.msg.model .who { color: var(--accent); }
.msg .body { white-space: pre-wrap; word-break: break-word; flex: 1; min-width: 0; }
.msg.error .body { color: var(--danger); }

.hint {
  color: var(--muted);
  font-size: 0.85rem;
}
.hint code {
  font-family: var(--mono);
  background: var(--panel-2);
  padding: 0.1rem 0.3rem;
  border-radius: 4px;
}

.cursor::after {
  content: "▍";
  color: var(--accent);
  animation: blink 1s steps(2, start) infinite;
}
@keyframes blink { to { visibility: hidden; } }

form { margin-top: 0.75rem; display: flex; gap: 0.5rem; }

textarea, input, select, button {
  font: inherit;
  color: inherit;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.55rem 0.7rem;
}

textarea { flex: 1; resize: vertical; min-height: 2.7rem; max-height: 10rem; }

button {
  background: var(--user);
  border-color: transparent;
  color: #fff;
  cursor: pointer;
  font-weight: 600;
  padding-inline: 1.1rem;
}
button:hover:not(:disabled) { filter: brightness(1.1); }
button:disabled { opacity: 0.5; cursor: not-allowed; }
button.ghost { background: transparent; color: var(--muted); border-color: var(--border); font-weight: 400; }

details.settings { margin-top: 1rem; }
details.settings > summary {
  cursor: pointer;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 0.25rem 0;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
  padding: 0.9rem;
  margin-top: 0.5rem;
}

.field { display: flex; flex-direction: column; gap: 0.3rem; }
.field label { font-size: 0.75rem; color: var(--muted); }
.field input, .field select { width: 100%; }
.field.wide { grid-column: 1 / -1; }
.field.wide:has(button) {
  flex-direction: row;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}
.field.wide button { flex: none; }

footer {
  border-top: 1px solid var(--border);
  margin-top: 2rem;
  padding: 1rem 1.25rem 2rem;
  color: var(--muted);
  font-size: 0.8rem;
}
footer a { color: var(--accent); }

.banner {
  border: 1px solid var(--border);
  border-left: 3px solid #d29922;
  background: var(--panel-2);
  border-radius: var(--radius);
  padding: 0.8rem 1rem;
  margin-bottom: 1rem;
  font-size: 0.88rem;
}
.banner strong { display: block; margin-bottom: 0.2rem; }
.banner pre {
  font-family: var(--mono);
  font-size: 0.78rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.6rem;
  overflow-x: auto;
  margin: 0.5rem 0 0;
}