:root {
  --bg: #0b0e14;
  --panel: #141a24;
  --panel-2: #1b2430;
  --line: #273141;
  --text: #e7edf5;
  --muted: #9fb0c3;
  --accent: #5ea0ff;
  --good: #46d39a;
  --warn: #ffcf6b;
  --bad: #ff7b7b;
  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font: 16px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: radial-gradient(1200px 600px at 70% -10%, #16202e, var(--bg));
  color: var(--text);
  min-height: 100vh;
}

.wrap { max-width: 820px; margin: 0 auto; padding: 24px 18px 64px; }

header h1 { font-size: 1.4rem; margin: 0 0 4px; letter-spacing: 0.2px; }
header p { margin: 0; color: var(--muted); font-size: 0.92rem; }

.status-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 14px 0;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 11px;
  border-radius: 999px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  font-size: 0.8rem;
  color: var(--muted);
}

.chip b { color: var(--text); font-weight: 600; }

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--muted);
}

.dot.ready { background: var(--good); }
.dot.warn { background: var(--warn); }
.dot.error { background: var(--bad); }

.load-progress {
  margin: 8px 0 16px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px 12px;
}

.load-progress-bar {
  height: 6px;
  border-radius: 999px;
  background: var(--line);
  overflow: hidden;
  margin-bottom: 6px;
}

.load-progress-bar::after {
  content: "";
  display: block;
  height: 100%;
  width: var(--pct, 0%);
  background: var(--accent);
  transition: width 0.2s ease;
}

.load-label { font-size: 0.78rem; color: var(--muted); }

#log {
  margin: 18px 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
  min-height: 120px;
}

.msg {
  padding: 12px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

.msg.user {
  background: var(--panel-2);
  align-self: flex-end;
  max-width: 85%;
}

.msg.bot { background: var(--panel); }

.msg .answer { white-space: pre-wrap; }

.msg .cite {
  margin-top: 8px;
  font-size: 0.78rem;
  color: var(--accent);
  border-top: 1px dashed var(--line);
  padding-top: 6px;
}

.msg .cite b { color: var(--muted); font-weight: 600; }

.msg .meta {
  margin-top: 6px;
  font-size: 0.74rem;
  color: var(--muted);
}

form { display: flex; gap: 10px; margin-top: 8px; }

#q {
  flex: 1;
  padding: 13px 14px;
  border-radius: 12px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--text);
  font: inherit;
}

#q:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

button {
  padding: 13px 18px;
  border-radius: 12px;
  border: 1px solid transparent;
  background: var(--accent);
  color: #04122b;
  font-weight: 650;
  cursor: pointer;
}

button:focus-visible { outline: 2px solid #fff; outline-offset: 2px; }
button:disabled { opacity: 0.6; cursor: default; }

.hint { color: var(--muted); font-size: 0.82rem; margin-top: 10px; }

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

.examples button {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--line);
  font-weight: 500;
  font-size: 0.8rem;
  padding: 7px 11px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}