:root {
  --bg: #0d1117;
  --surface: #161b22;
  --surface2: #1c2330;
  --border: #2d333b;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #a371f7;
  --accent2: #7ee787;
  --danger: #f85149;
  --radius: 14px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  min-height: 100vh;
}
a { color: var(--accent); }
.wrap { max-width: 720px; margin: 0 auto; padding: 16px; padding-bottom: 64px; }

/* top bar */
.topbar {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 16px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 10;
}
.brand { font-weight: 700; font-size: 18px; text-decoration: none; color: var(--text); }
.topbar nav { display: flex; gap: 4px; margin-left: auto; }
.topbar nav a {
  color: var(--muted); text-decoration: none;
  padding: 8px 12px; border-radius: 8px; font-size: 15px;
}
.topbar nav a.active { color: var(--text); background: var(--surface2); }
.logout-form { margin: 0; }
.link-btn {
  background: none; border: none; color: var(--muted);
  font-size: 18px; cursor: pointer; padding: 8px;
}

/* hero / search */
.search-hero { text-align: center; padding: 32px 0 16px; }
.hero-logo { font-size: 56px; }
.page-title { margin: 8px 0 4px; font-size: 22px; }
.search-box {
  display: flex; gap: 8px; margin: 20px 0 8px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px; padding: 6px 6px 6px 20px;
}
.search-box:focus-within { border-color: var(--accent); }
.search-box input[type="text"] {
  flex: 1; background: none; border: none; outline: none;
  color: var(--text); font-size: 17px; min-width: 0;
}
.search-box button {
  border: none; border-radius: 999px; cursor: pointer;
  font-size: 18px; padding: 10px 18px;
}
button.primary { background: var(--accent); color: #fff; font-weight: 600; }
button.primary:active { transform: scale(0.97); }

/* options */
.sources { text-align: left; margin: 12px 0; }
.sources summary { cursor: pointer; color: var(--muted); padding: 8px 0; }
.source-grid { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0; }
.chip {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 999px; padding: 8px 14px; font-size: 14px; cursor: pointer;
}
.chip input { accent-color: var(--accent); margin-right: 6px; }
.opt-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; text-align: left; margin: 12px 0; }
.opt-grid label, .num-row { display: flex; flex-direction: column; gap: 6px; color: var(--muted); font-size: 14px; }
.num-row { margin-top: 12px; text-align: left; }
input[type="number"], select, input[type="text"], input[type="password"] {
  background: var(--surface); border: 1px solid var(--border);
  color: var(--text); border-radius: 10px; padding: 12px; font-size: 16px; width: 100%;
}
input:focus, select:focus { outline: none; border-color: var(--accent); }

/* auth */
.auth-card {
  max-width: 380px; margin: 60px auto; padding: 32px 24px;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  text-align: center;
}
.auth-logo { font-size: 48px; }
.auth-card h1 { margin: 8px 0 20px; }
.auth-card label { display: block; text-align: left; margin: 12px 0; color: var(--muted); font-size: 14px; }
.auth-card input { margin-top: 6px; }
.auth-card button { width: 100%; margin-top: 16px; padding: 14px; font-size: 16px; border: none; border-radius: 10px; cursor: pointer; }
.error { color: var(--danger); background: rgba(248,81,73,.1); padding: 10px; border-radius: 8px; }
.muted { color: var(--muted); }

/* progress */
.progress { margin: 16px 0; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.hidden { display: none; }
.progress-head { font-weight: 600; margin-bottom: 8px; }
.spinner {
  width: 28px; height: 28px; border: 3px solid var(--border);
  border-top-color: var(--accent); border-radius: 50%;
  animation: spin 0.8s linear infinite; margin-bottom: 12px;
}
@keyframes spin { to { transform: rotate(360deg); } }
.log { list-style: none; margin: 0; padding: 0; max-height: 300px; overflow-y: auto; font-family: ui-monospace, monospace; font-size: 13px; }
.log li { padding: 4px 0; border-bottom: 1px solid var(--border); word-break: break-word; }
.log-ts { color: var(--muted); margin-right: 8px; }
.log-verbose { color: var(--muted); }

/* results */
.results { display: flex; flex-direction: column; gap: 12px; margin-top: 16px; }
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 16px;
}
.card-src {
  font-size: 12px; text-transform: uppercase; letter-spacing: 1px;
  color: var(--accent2); margin-bottom: 6px;
}
.card-title { font-size: 17px; font-weight: 600; text-decoration: none; color: var(--text); }
.card-title:hover { text-decoration: underline; }
.card-url { font-size: 13px; color: var(--muted); word-break: break-all; margin: 4px 0; }
.card-snippet { margin: 8px 0 0; color: var(--text); font-size: 15px; }
.deep-report pre { white-space: pre-wrap; font-size: 14px; }

/* history */
.history-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.history-link {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 12px; padding: 12px 16px; text-decoration: none; color: var(--text);
}
.badge {
  font-size: 11px; text-transform: uppercase; letter-spacing: 1px;
  padding: 3px 10px; border-radius: 999px; font-weight: 700;
}
.badge-search { background: rgba(163,113,247,.2); color: var(--accent); }
.badge-deep { background: rgba(126,231,135,.15); color: var(--accent2); }
.badge-rag { background: rgba(121,192,255,.15); color: #79c0ff; }
.history-query { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.history-meta { font-size: 13px; color: var(--muted); }

.job-head { margin-bottom: 16px; }
.job-query { margin: 8px 0; }
button.danger { background: none; border: 1px solid var(--danger); color: var(--danger); border-radius: 8px; padding: 8px 16px; cursor: pointer; }

@media (max-width: 480px) {
  .topbar nav a { padding: 8px 8px; font-size: 14px; }
  .hero-logo { font-size: 44px; }
  .opt-grid { grid-template-columns: 1fr; }
}