/* ═══════════════════════════════════════════════════════════════════════
   Tabla I/O — Knowledge Base Stylesheet
   ═══════════════════════════════════════════════════════════════════════ */

/* ─── Knowledge Container ─────────────────────────────────────────── */
.knowledge-container {
  max-width: 960px;
  margin: 0 auto;
  padding: 2rem 1.5rem 4rem;
  color: var(--text-primary);
  font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* ─── Page Header ─────────────────────────────────────────────────── */
.knowledge-header {
  margin-bottom: 2rem;
  text-align: center;
}

.knowledge-header h1 {
  font-size: 2.4rem;
  margin: 0 0 0.4rem;
  color: var(--text-primary);
  font-weight: 700;
  letter-spacing: -0.02em;
  font-family: 'Outfit', sans-serif;
}

.knowledge-header p {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin: 0;
  line-height: 1.5;
}

/* ─── Tab Strip ───────────────────────────────────────────────────── */
.knowledge-tabs {
  display: flex;
  gap: 4px;
  padding: 4px;
  margin-bottom: 2rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.knowledge-tabs::-webkit-scrollbar {
  display: none;
}

.knowledge-tab {
  flex: 0 0 auto;
  padding: 0.65rem 1.2rem;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-family: 'Outfit', sans-serif;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  transition: all var(--transition-fast);
  position: relative;
  letter-spacing: 0.01em;
}

.knowledge-tab:hover {
  color: var(--text-primary);
  background: var(--bg-glass-hover);
}

.knowledge-tab.active {
  color: var(--text-primary);
  background: var(--bg-elevated);
  font-weight: 600;
  box-shadow: var(--shadow-xs);
}

/* ─── Tab Content Panels ──────────────────────────────────────────── */
.knowledge-panel {
  display: none;
  animation: kbFadeIn 0.3s ease;
}

.knowledge-panel.active {
  display: block;
}

@keyframes kbFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── Section Headings ────────────────────────────────────────────── */
.kb-section {
  margin-bottom: 2.5rem;
}

.kb-section-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-primary);
  margin: 0 0 1.25rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border-color);
  font-family: 'Outfit', sans-serif;
  letter-spacing: -0.01em;
}

.kb-subsection-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 1.5rem 0 0.75rem;
  font-family: 'Outfit', sans-serif;
}

/* ─── Content Cards ───────────────────────────────────────────────── */
.kb-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.kb-card:hover {
  transform: translateY(-1px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}

.kb-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 0.5rem;
  font-family: 'Outfit', sans-serif;
}

.kb-card h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 1rem 0 0.4rem;
  font-family: 'Outfit', sans-serif;
}

.kb-card p {
  color: var(--text-secondary);
  line-height: 1.65;
  margin: 0 0 0.6rem;
  font-size: 0.925rem;
}

.kb-card p:last-child {
  margin-bottom: 0;
}

.kb-card ul {
  margin: 0.5rem 0 0.75rem 1.25rem;
  padding: 0;
  color: var(--text-secondary);
  font-size: 0.925rem;
  line-height: 1.6;
}

.kb-card li {
  margin-bottom: 0.35rem;
}

/* ─── Inline Tags / Labels ────────────────────────────────────────── */
.kb-tag {
  display: inline-block;
  background: var(--accent-subtle);
  color: var(--accent-primary);
  padding: 0.15rem 0.55rem;
  border-radius: 5px;
  font-size: 0.78rem;
  font-weight: 600;
  margin-right: 0.4rem;
  letter-spacing: 0.02em;
  vertical-align: middle;
}

/* ─── Tables ──────────────────────────────────────────────────────── */
.kb-table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.75rem 0 1rem;
  font-size: 0.9rem;
}

.kb-table th {
  text-align: left;
  padding: 0.6rem 0.75rem;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  font-weight: 600;
  font-family: 'Outfit', sans-serif;
  font-size: 0.85rem;
  border-bottom: 2px solid var(--border-color);
}

.kb-table td {
  padding: 0.55rem 0.75rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
  line-height: 1.5;
}

.kb-table tr:last-child td {
  border-bottom: none;
}

.kb-table tr:hover td {
  background: var(--bg-tertiary);
}

/* ─── Quote / Callout Box ─────────────────────────────────────────── */
.kb-callout {
  background: var(--bg-tertiary);
  border-left: 3px solid var(--accent-primary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 1rem 1.25rem;
  margin: 1rem 0;
  color: var(--text-secondary);
  font-size: 0.925rem;
  line-height: 1.65;
  font-style: italic;
}

/* ─── Gharana Profile Cards ───────────────────────────────────────── */
.kb-gharana-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.kb-gharana-card:hover {
  transform: translateY(-1px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}

.kb-gharana-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent-primary);
  margin: 0 0 0.6rem;
  font-family: 'Outfit', sans-serif;
}

.kb-gharana-card .kb-gharana-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.kb-gharana-card p {
  color: var(--text-secondary);
  line-height: 1.65;
  margin: 0 0 0.5rem;
  font-size: 0.925rem;
}

/* ─── Anatomy Grid ────────────────────────────────────────────────── */
.kb-anatomy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.kb-anatomy-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 1rem 1.15rem;
  transition: border-color var(--transition-fast);
}

.kb-anatomy-item:hover {
  border-color: var(--border-strong);
}

.kb-anatomy-item strong {
  color: var(--text-primary);
  font-family: 'Outfit', sans-serif;
  font-weight: 600;
  display: block;
  margin-bottom: 0.25rem;
  font-size: 0.95rem;
}

.kb-anatomy-item span {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.5;
}

/* ─── Responsive ──────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .knowledge-container {
    padding: 1.25rem 1rem 3rem;
  }

  .knowledge-header h1 {
    font-size: 1.75rem;
  }

  .knowledge-tabs {
    margin-bottom: 1.5rem;
  }

  .knowledge-tab {
    padding: 0.55rem 1rem;
    font-size: 0.8rem;
  }

  .kb-section-title {
    font-size: 1.25rem;
  }

  .kb-card {
    padding: 1rem 1.15rem;
  }

  .kb-anatomy-grid {
    grid-template-columns: 1fr;
  }
}