:root {
  --dash-bg: #eef1ef;
  --dash-card: #fff;
  --dash-text: #1a2e23;
  --dash-muted: #6b7280;
  --dash-border: #e5ebe7;
  --dash-green: #1d6b44;
  --dash-amber: #f0a500;
  --dash-red: #ef4444;
  --dash-shadow: 0 4px 24px rgba(26, 46, 35, 0.08);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Segoe UI', Tahoma, system-ui, sans-serif;
  background: var(--dash-bg);
  color: var(--dash-text);
  min-height: 100vh;
}
.hidden { display: none !important; }

.brain-gate {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--dash-muted);
}

.brain-app { max-width: 1400px; margin: 0 auto; padding: 1rem 1.25rem 2rem; }
.brain-embedded {
  max-height: calc(100vh - var(--ctx-h) - 1rem);
  overflow: auto;
  border-radius: 16px;
  margin: 0.5rem;
}

.brain-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1rem;
}
.brain-eyebrow { margin: 0; color: var(--dash-green); font-size: 0.75rem; font-weight: 700; }
.brain-top h1 { margin: 0.15rem 0; font-size: 1.65rem; font-weight: 900; }
.brain-sub { margin: 0; font-size: 0.82rem; color: var(--dash-muted); max-width: 520px; }
.brain-back {
  display: inline-block;
  margin-bottom: 0.5rem;
  color: var(--dash-green);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 600;
}
.brain-top-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 0.5rem; }
.brain-meta { font-size: 0.72rem; color: var(--dash-muted); }

.btn {
  border: none;
  border-radius: 10px;
  padding: 0.5rem 0.9rem;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
}
.btn.primary { background: var(--dash-green); color: #fff; }
.btn.outline { background: #fff; border: 1px solid var(--dash-border); color: var(--dash-green); }
.btn.tiny { padding: 0.25rem 0.5rem; font-size: 0.68rem; }
.btn.danger { color: var(--dash-red); border-color: #fecaca; }
.btn.full { width: 100%; margin-top: 0.35rem; }

.brain-sources {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 0.5rem;
  margin-bottom: 1rem;
}
.brain-src {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  background: var(--dash-card);
  border: 1px solid var(--dash-border);
  border-radius: 12px;
  padding: 0.55rem 0.65rem;
  box-shadow: var(--dash-shadow);
  font-size: 0.72rem;
}
.brain-src strong { display: block; font-size: 0.75rem; }
.brain-src span { color: var(--dash-muted); }
.brain-src-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex-shrink: 0;
}
.brain-src.ok .brain-src-dot { background: var(--dash-green); }
.brain-src.bad .brain-src-dot { background: var(--dash-red); }

.brain-layout {
  display: grid;
  grid-template-columns: minmax(280px, 340px) 1fr;
  gap: 1rem;
  align-items: start;
}
.brain-card {
  background: var(--dash-card);
  border: 1px solid var(--dash-border);
  border-radius: 16px;
  padding: 1rem;
  box-shadow: var(--dash-shadow);
  margin-bottom: 1rem;
}
.brain-card h2 { margin: 0 0 0.75rem; font-size: 0.95rem; }
.brain-card h3 { margin: 0.65rem 0 0.35rem; font-size: 0.78rem; color: var(--dash-muted); }
.brain-card label {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  font-size: 0.72rem;
  color: var(--dash-muted);
  margin-bottom: 0.55rem;
}
.brain-card input, .brain-card textarea, .brain-card select {
  font: inherit;
  border: 1px solid var(--dash-border);
  border-radius: 8px;
  padding: 0.45rem 0.55rem;
  color: var(--dash-text);
}
.brain-check { flex-direction: row !important; align-items: center; gap: 0.45rem !important; }
.brain-hint { font-size: 0.72rem; color: var(--dash-muted); margin: 0 0 0.5rem; }

.brain-table { width: 100%; border-collapse: collapse; font-size: 0.75rem; }
.brain-table th, .brain-table td { padding: 0.45rem 0.35rem; text-align: right; border-bottom: 1px solid var(--dash-border); }
.brain-table tr.active { background: rgba(29, 107, 68, 0.06); }
.brain-forms-wrap { overflow-x: auto; }

.brain-preview-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 0.75rem;
}
.brain-pre {
  background: #f8faf9;
  border: 1px solid var(--dash-border);
  border-radius: 10px;
  padding: 0.65rem;
  font-size: 0.7rem;
  line-height: 1.5;
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0;
  max-height: 160px;
  overflow: auto;
}
.brain-pre.tall { max-height: 280px; }
.brain-pre.reply { max-height: 200px; margin-top: 0.5rem; }
.brain-pre.code { max-height: none; direction: ltr; text-align: left; }

.brain-tag-list { margin: 0; padding: 0 1rem; font-size: 0.72rem; color: var(--dash-muted); }
.brain-kb-list { list-style: none; margin: 0.75rem 0 0; padding: 0; }
.brain-kb-list li {
  border: 1px solid var(--dash-border);
  border-radius: 8px;
  padding: 0.45rem;
  margin-bottom: 0.35rem;
  font-size: 0.72rem;
}
.brain-kb-list p { margin: 0.2rem 0; color: var(--dash-muted); }

.brain-card-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}
.brain-card-head h2 { margin: 0; }

#testMessage { width: 100%; margin-bottom: 0.5rem; font: inherit; border-radius: 8px; border: 1px solid var(--dash-border); padding: 0.5rem; }
.brain-tier { font-size: 0.85rem; color: var(--dash-green); margin: 0.35rem 0; font-weight: 600; }
.brain-table tr.active { background: rgba(29, 107, 68, 0.08); }

@media (max-width: 960px) {
  .brain-layout { grid-template-columns: 1fr; }
  .brain-preview-grid { grid-template-columns: 1fr; }
}