:root {
  --bg: #f6f7f9; --fg: #1d2129; --muted: #6b7280; --card: #ffffff; --border: #e3e6ea;
  --accent: #2563eb; --accent-fg: #ffffff; --ok: #15803d; --warn: #b45309; --error: #b91c1c;
  --bubble-user: #e0e7ff; --bubble-bot: #f1f5f9;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1216; --fg: #e5e7eb; --muted: #9aa3af; --card: #171b21; --border: #2a3039;
    --accent: #3b82f6; --ok: #4ade80; --warn: #fbbf24; --error: #f87171;
    --bubble-user: #1e2a4a; --bubble-bot: #1f252d;
  }
}
* { box-sizing: border-box; }
body { margin: 0; font: 15px/1.5 system-ui, -apple-system, Segoe UI, Roboto, sans-serif; background: var(--bg); color: var(--fg); }
header { background: var(--card); border-bottom: 1px solid var(--border); }
nav { max-width: 1100px; margin: 0 auto; padding: 10px 16px; display: flex; gap: 18px; align-items: center; }
nav a { color: var(--fg); text-decoration: none; }
nav a:hover { color: var(--accent); }
nav .brand { font-weight: 700; margin-right: auto; }
main { max-width: 1100px; margin: 0 auto; padding: 16px; }
h1 { font-size: 1.5rem; margin: 8px 0 16px; }
h2 { font-size: 1.1rem; margin: 0 0 10px; }
h3 { font-size: 1rem; margin: 16px 0 6px; }
.card { background: var(--card); border: 1px solid var(--border); border-radius: 10px; padding: 16px; margin: 0 0 16px; }
.cols { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 800px) { .cols { grid-template-columns: 1fr; } }
.grid { display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px; margin: 0; }
.grid dt { color: var(--muted); }
.grid dd { margin: 0; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 10px 16px; }
@media (max-width: 600px) { .grid2 { grid-template-columns: 1fr; } }
label { display: block; font-size: 0.9rem; color: var(--muted); margin-bottom: 10px; }
input, select, textarea { display: block; width: 100%; margin-top: 4px; padding: 8px 10px; font: inherit; color: var(--fg); background: var(--bg); border: 1px solid var(--border); border-radius: 8px; }
textarea { resize: vertical; }
button { font: inherit; padding: 8px 14px; border-radius: 8px; border: 1px solid var(--accent); background: var(--accent); color: var(--accent-fg); cursor: pointer; }
button.secondary { background: transparent; color: var(--accent); }
button.small { padding: 3px 10px; font-size: 0.85rem; }
button.link { background: none; border: none; color: var(--fg); padding: 0; }
button.link:hover { color: var(--accent); }
form.inline { display: inline; }
.muted { color: var(--muted); }
.small { font-size: 0.82rem; }
.ok { color: var(--ok); }
.warn { color: var(--warn); }
.flash { background: var(--bubble-user); border: 1px solid var(--border); border-radius: 8px; padding: 10px 12px; margin-bottom: 16px; }
.flash.error { color: var(--error); }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 0.85rem; }
.tag { display: inline-block; padding: 1px 8px; border-radius: 999px; background: var(--bubble-bot); font-size: 0.8rem; }
.pre { white-space: pre-wrap; word-break: break-word; margin: 4px 0 0; }
.log { max-height: 60vh; overflow: auto; border: 1px solid var(--border); border-radius: 8px; padding: 8px; }
.msg { padding: 6px 8px; border-bottom: 1px solid var(--border); }
.msg.bot { background: var(--bubble-bot); }
.chat .bubble { max-width: 80%; padding: 10px 14px; border-radius: 14px; margin: 8px 0; }
.chat .bubble.user { background: var(--bubble-user); margin-left: auto; }
.chat .bubble.assistant { background: var(--bubble-bot); }
.composer { margin-top: 16px; }
.composer .row { display: flex; gap: 12px; align-items: center; margin-top: 8px; }
body.login main { max-width: 420px; margin-top: 10vh; }
.narrow h1 { margin-bottom: 0; }
a { color: var(--accent); }
.pending { border: 1px solid var(--accent); border-radius: 10px; padding: 12px 14px; margin: 12px 0; background: var(--bubble-user); }
.pending ul { margin: 6px 0 10px 18px; padding: 0; }

label.block { display: block; margin: 8px 0; }
input.wide { width: 100%; box-sizing: border-box; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; margin: 8px 0 0; }
.models { columns: 2; padding-left: 0; margin: 8px 0 0; }
.models li { list-style: none; padding: 2px 0; }
details summary { cursor: pointer; color: var(--muted); }