:root {
  color-scheme: light;
  --bg: #f5f7f8;
  --panel: #ffffff;
  --text: #172026;
  --muted: #66727c;
  --line: #d9e0e5;
  --accent: #0f766e;
  --accent-2: #b45309;
  --hit: #fff2a8;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

.app {
  width: min(980px, 100%);
  margin: 0 auto;
  padding: 16px;
}

.search-panel, .answer, .docs, .result {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

.search-panel {
  position: sticky;
  top: 0;
  z-index: 3;
  padding: 16px;
  box-shadow: 0 8px 24px rgba(23, 32, 38, 0.08);
}

h1, h2, h3, p { margin: 0; }

h1 { font-size: clamp(22px, 6vw, 34px); }
h2 { font-size: 18px; margin-bottom: 8px; }
h3 { font-size: 16px; margin-bottom: 8px; }

#meta {
  color: var(--muted);
  margin-top: 4px;
  font-size: 14px;
}

.search-box {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 8px;
  margin-top: 14px;
}

input {
  width: 100%;
  min-height: 48px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 12px;
  font-size: 17px;
}

button {
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  padding: 0 12px;
  font-size: 14px;
}

#clearBtn {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.quick {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-top: 10px;
}

.quick button { flex: 0 0 auto; }

.answer, .docs {
  padding: 14px;
  margin-top: 12px;
}

.answer strong { color: var(--accent-2); }

.results {
  display: grid;
  gap: 10px;
  margin-top: 12px;
}

.result {
  padding: 14px;
}

.source {
  color: var(--muted);
  font-size: 13px;
  word-break: break-word;
}

.badge {
  display: inline-block;
  margin-right: 6px;
  margin-bottom: 6px;
  padding: 2px 8px;
  border-radius: 999px;
  background: #e7f5f2;
  color: #075e57;
  font-size: 12px;
}

.text {
  white-space: pre-wrap;
  margin-top: 8px;
  font-size: 15px;
}

mark {
  background: var(--hit);
  padding: 0 2px;
}

.doc-row {
  padding: 10px 0;
  border-top: 1px solid var(--line);
}

.doc-row:first-child { border-top: 0; }

.empty {
  color: var(--muted);
  padding: 16px;
  text-align: center;
}

@media (max-width: 560px) {
  .app { padding: 10px; }
  .search-panel { padding: 12px; }
  .search-box { grid-template-columns: 1fr; }
  #clearBtn { width: 100%; }
}