:root {
  --bg: #0f1115;
  --surface: #171a21;
  --surface-2: #1e222b;
  --border: #2a2f3a;
  --text: #e6e8ec;
  --muted: #99a0ae;
  --accent: #6ea8fe;
  --good: #4ade80;
  --warn: #fbbf24;
  --bad: #f87171;
  --radius: 10px;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #f6f7f9;
    --surface: #ffffff;
    --surface-2: #f0f2f5;
    --border: #dfe3e8;
    --text: #1a1d23;
    --muted: #5f6673;
    --accent: #2563eb;
  }
}

* { box-sizing: border-box; }

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

button { font: inherit; cursor: pointer; }
input { font: inherit; }

/* ---------- login ---------- */

.login { display: grid; place-items: center; min-height: 100vh; padding: 24px; }

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  width: min(400px, 100%);
  display: grid;
  gap: 14px;
}

.login-card h1 { margin: 0; font-size: 22px; }
.login-card label { display: grid; gap: 6px; font-size: 13px; color: var(--muted); }

.login-card input,
.ask input {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  padding: 10px 12px;
}

.login-card button[type="submit"],
.ask button {
  background: var(--accent);
  color: #0b1020;
  border: 0;
  border-radius: 8px;
  padding: 10px 16px;
  font-weight: 600;
}

/* ---------- shell ---------- */

header {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 12px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
  position: sticky;
  top: 0;
  z-index: 5;
  flex-wrap: wrap;
}

.brand { font-weight: 700; letter-spacing: 0.02em; }

nav { display: flex; gap: 4px; flex-wrap: wrap; }

nav button {
  background: transparent;
  border: 1px solid transparent;
  color: var(--muted);
  padding: 7px 12px;
  border-radius: 8px;
}

nav button:hover { color: var(--text); background: var(--surface-2); }
nav button.active { color: var(--text); background: var(--surface-2); border-color: var(--border); }

.who { margin-left: auto; color: var(--muted); font-size: 13px; display: flex; gap: 10px; align-items: center; }

.link { background: none; border: 0; color: var(--accent); padding: 0; }

main { padding: 20px; max-width: 1200px; margin: 0 auto; display: grid; gap: 16px; }

.view { display: grid; gap: 16px; }

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  overflow-x: auto;
}

.panel h2 { margin: 0 0 4px; font-size: 15px; letter-spacing: 0.01em; }

.muted { color: var(--muted); font-size: 13px; margin: 0 0 12px; }

.split { display: grid; gap: 16px; grid-template-columns: 1fr; }
@media (min-width: 900px) { .split { grid-template-columns: 1fr 1fr; } }

.cards { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 16px;
}

.card .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.05em; }
.card .value { font-size: 24px; font-weight: 600; margin-top: 4px; }

/* ---------- tables ---------- */

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th { text-align: left; color: var(--muted); font-weight: 500; font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; }
th, td { padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: top; }
tr:last-child td { border-bottom: 0; }

.pill { display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; border: 1px solid var(--border); }
.pill.good { color: var(--good); border-color: color-mix(in srgb, var(--good) 40%, transparent); }
.pill.warn { color: var(--warn); border-color: color-mix(in srgb, var(--warn) 40%, transparent); }
.pill.bad { color: var(--bad); border-color: color-mix(in srgb, var(--bad) 40%, transparent); }

.badge {
  background: var(--bad);
  color: #14161b;
  border-radius: 999px;
  padding: 1px 7px;
  font-size: 11px;
  font-weight: 700;
}

/* ---------- timeline ---------- */

.event { display: grid; grid-template-columns: 150px 1fr; gap: 12px; padding: 7px 0; border-bottom: 1px solid var(--border); font-size: 14px; }
.event:last-child { border-bottom: 0; }
.event .when { color: var(--muted); font-variant-numeric: tabular-nums; font-size: 12px; }
.event .type { font-family: ui-monospace, SFMono-Regular, monospace; font-size: 13px; }
.event .actor { color: var(--muted); font-size: 12px; }

/* ---------- ai ---------- */

.ask { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.ask input { flex: 1 1 320px; }
.checkbox { color: var(--muted); font-size: 13px; display: flex; gap: 6px; align-items: center; }

.suggestions { display: flex; gap: 8px; margin: 12px 0; flex-wrap: wrap; }

.chip {
  background: var(--surface-2);
  border: 1px solid var(--border);
  color: var(--muted);
  border-radius: 999px;
  padding: 5px 12px;
  font-size: 13px;
}
.chip:hover { color: var(--text); }

.answer { display: grid; gap: 14px; margin-top: 8px; }

.answer-text { background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px; padding: 14px; white-space: pre-wrap; }

.evidence { font-size: 13px; }
.evidence li { margin-bottom: 4px; color: var(--muted); }
.evidence code { color: var(--accent); font-size: 12px; }

.meta { display: flex; gap: 14px; flex-wrap: wrap; color: var(--muted); font-size: 12px; }

.approval {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  margin-bottom: 10px;
  display: grid;
  gap: 8px;
}
.approval .head { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.approval .summary { font-weight: 600; }
.approval .actions { display: flex; gap: 8px; }
.approval button { border-radius: 8px; border: 1px solid var(--border); background: var(--surface-2); color: var(--text); padding: 6px 14px; }
.approval button.approve { border-color: color-mix(in srgb, var(--good) 50%, transparent); color: var(--good); }
.approval button.reject { border-color: color-mix(in srgb, var(--bad) 50%, transparent); color: var(--bad); }

.error { color: var(--bad); font-size: 13px; min-height: 18px; margin: 0; }

.empty { color: var(--muted); font-size: 14px; padding: 12px 0; }