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

/* ─── Knowledge Container ─────────────────────────────────────────── */
.knowledge-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 0 4rem;
  color: var(--text-primary);
  font-family: var(--font-system);
}

/* ─── Tab Strip — Apple Segmented Capsule with Sliding Pill ───────── */
.knowledge-tabs {
  position: relative;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px;
  margin-bottom: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  background: rgba(0, 0, 0, 0.16);
  border-radius: 9999px;
  border: 1px solid var(--border-color);
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.04);
  isolation: isolate;
}

[data-theme="light"] .knowledge-tabs,
html.light .knowledge-tabs {
  background: rgba(0, 0, 0, 0.04);
  border-color: rgba(0, 0, 0, 0.08);
}

[data-theme="cream"] .knowledge-tabs,
html.cream .knowledge-tabs {
  background: rgba(44, 26, 14, 0.05);
  border-color: rgba(44, 26, 14, 0.08);
}

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

.knowledge-tab-indicator {
  position: absolute;
  top: 0;
  left: 0;
  box-sizing: border-box;
  border-radius: 9999px;
  background: var(--accent-primary, #ea6500);
  box-shadow: 0 2px 10px rgba(234, 101, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.25);
  pointer-events: none;
  z-index: 0;
  opacity: 0;
  will-change: transform, width, height;
  transition: transform 0.28s cubic-bezier(0.16, 1, 0.3, 1), width 0.24s cubic-bezier(0.16, 1, 0.3, 1), height 0.24s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease;
}

.knowledge-tab {
  position: relative;
  z-index: 1;
  flex: 0 0 auto;
  padding: 0.55rem 1.15rem;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  font-family: var(--font-system);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  border-radius: 9999px;
  white-space: nowrap;
  transition: transform 0.16s cubic-bezier(0.16, 1, 0.3, 1), color 0.2s ease;
  letter-spacing: -0.01em;
  user-select: none;
  outline: none;
}

.knowledge-tab:focus {
  outline: none;
}

.knowledge-tab:focus-visible {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

.knowledge-tab:hover:not(.active) {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.06);
}

[data-theme="light"] .knowledge-tab:hover:not(.active),
html.light .knowledge-tab:hover:not(.active) {
  background: rgba(0, 0, 0, 0.05);
}

.knowledge-tab:active {
  transform: scale(0.96);
}

/* Fallback before indicator initializes */
.knowledge-tabs:not(.has-indicator) .knowledge-tab.active {
  color: #ffffff;
  background: var(--accent-primary, #ea6500);
  font-weight: 600;
  box-shadow: 0 2px 10px rgba(234, 101, 0, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.25);
}

.knowledge-tabs.has-indicator .knowledge-tab.active {
  color: #ffffff !important;
  background: transparent !important;
  font-weight: 600;
  box-shadow: none !important;
}

/* ─── 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: var(--font-system);
  letter-spacing: -0.025em;
}

.kb-subsection-title {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 1.5rem 0 0.75rem;
  font-family: var(--font-system);
  letter-spacing: -0.015em;
}

/* ─── Content Cards — Apple Bento Elevation ───────────────────────── */
.kb-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  transition: transform 0.22s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.22s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.2s ease;
}

.kb-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.04);
}

.kb-card:active {
  transform: scale(0.995);
}

.kb-card h3 {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 0 0 0.5rem;
  font-family: var(--font-system);
  letter-spacing: -0.02em;
}

.kb-card h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin: 1rem 0 0.4rem;
  font-family: var(--font-system);
  letter-spacing: -0.01em;
}

.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: 0.2rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.78rem;
  font-weight: 600;
  margin-right: 0.4rem;
  letter-spacing: 0.01em;
  vertical-align: middle;
  border: 1px solid var(--border-color);
}

/* ─── 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: var(--font-system);
  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 12px 12px 0;
  padding: 1rem 1.25rem;
  margin: 1rem 0;
  color: var(--text-secondary);
  font-size: 0.925rem;
  line-height: 1.65;
  font-style: italic;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
}

/* ─── Gharana Profile Cards — Apple Bento Elevation ───────────────── */
.kb-gharana-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  transition: transform 0.22s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.22s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.2s ease;
}

.kb-gharana-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.08), 0 2px 6px rgba(0, 0, 0, 0.04);
}

.kb-gharana-card:active {
  transform: scale(0.995);
}

.kb-gharana-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent-primary);
  margin: 0 0 0.6rem;
  font-family: var(--font-system);
  letter-spacing: -0.02em;
}

.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: 12px;
  padding: 1rem 1.15rem;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.02);
  transition: transform 0.2s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.15s ease, box-shadow 0.15s ease;
}

.kb-anatomy-item:hover {
  transform: translateY(-1.5px);
  border-color: var(--border-strong);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.06);
}

.kb-anatomy-item strong {
  color: var(--text-primary);
  font-family: var(--font-system);
  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: 0 0 3rem;
  }

  .knowledge-tabs {
    margin-bottom: 0;
  }

  .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;
  }
}

/* ─── Knowledge Toolbar & Search ──────────────────────────────────── */
.kb-toolbar {
  margin-top: 24px;
  margin-bottom: 2rem;
}

/* ─── Smooth Directional Glide for Knowledge Panels ─── */
@keyframes kb-glide-forward {
  0% {
    opacity: 0;
    transform: translate3d(24px, 0, 0);
  }
  100% {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

@keyframes kb-glide-backward {
  0% {
    opacity: 0;
    transform: translate3d(-24px, 0, 0);
  }
  100% {
    opacity: 1;
    transform: translate3d(0, 0, 0);
  }
}

.knowledge-panel.kb-glide-forward {
  animation: kb-glide-forward 0.26s cubic-bezier(0.16, 1, 0.3, 1) both;
}

.knowledge-panel.kb-glide-backward {
  animation: kb-glide-backward 0.26s cubic-bezier(0.16, 1, 0.3, 1) both;
}

@media (prefers-reduced-motion: reduce) {
  .knowledge-tab-indicator,
  .knowledge-panel.kb-glide-forward,
  .knowledge-panel.kb-glide-backward {
    animation: none !important;
    transition: none !important;
  }
}
.kb-toolbar .lib-search-box {
  position: relative;
  flex: 1 1 100%;
  width: 100%;
}
.kb-search-clear {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: transparent !important;
  border: none !important;
  box-shadow: none !important;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0;
  transition: color 0.15s, transform 0.15s;
}
.kb-search-clear:hover {
  color: var(--text-primary);
  background: transparent !important;
  transform: translateY(-50%) scale(1.1);
}
.kb-highlight {
  background: rgba(234, 101, 0, 0.25);
  color: var(--accent-primary, #ea6500);
  padding: 1px 4px;
  border-radius: 4px;
  font-weight: 700;
}
.kb-search-results-header {
  margin-bottom: 20px;
  padding: 4px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}
.kb-search-results-grid {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.kb-search-result-card {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 18px;
  padding: 20px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.04), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  transition: transform 0.22s cubic-bezier(0.16, 1, 0.3, 1), border-color 0.2s ease, box-shadow 0.2s ease;
}
.kb-search-result-card:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong, var(--accent-primary));
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.08);
}
.kb-search-card-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-color);
}
.kb-search-badge {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 10px;
  border-radius: 100px;
  background: var(--bg-secondary);
  color: var(--accent-primary);
  border: 1px solid var(--border-color);
}
.kb-search-jump-btn {
  background: transparent;
  border: none;
  color: var(--accent-primary);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: transform 0.15s;
}
.kb-search-jump-btn:hover {
  transform: translateX(2px);
}
.kb-empty-search {
  text-align: center;
  padding: 56px 20px;
  background: var(--bg-primary);
  border-radius: 20px;
  border: 1px solid var(--border-color);
}
@media (max-width: 768px) {
  .kb-toolbar {
    margin-top: 16px;
    margin-bottom: 1.5rem;
  }
  .kb-toolbar .lib-toolbar-controls {
    display: flex !important;
    flex-wrap: nowrap !important;
    align-items: center !important;
  }
  .kb-toolbar .lib-search-box {
    flex: 1 1 100% !important;
  }
  .kb-search-result-card {
    padding: 14px;
    border-radius: 16px;
  }
}

/* ─── Knowledge Card Header & Export Button ───────────────────────── */
.kb-title-row {
  display: flex !important;
  align-items: center !important;
  justify-content: space-between !important;
  gap: 12px !important;
  margin-bottom: 16px !important;
}

.kb-title-row h3,
.kb-title-row h4 {
  margin: 0 !important;
  line-height: 1.35;
}

.kb-card-export-btn,
.kb-title-row .social-export-btn {
  width: auto !important;
  max-width: -moz-fit-content !important;
  max-width: fit-content !important;
  flex: 0 0 auto !important;
  white-space: nowrap !important;
  padding: 4px 12px !important;
  min-height: 28px !important;
  height: 28px !important;
  font-size: 0.8rem !important;
  font-weight: 600 !important;
  border-radius: 9999px !important;
  border: 1px solid var(--border-color) !important;
  background: var(--bg-secondary) !important;
  color: var(--text-primary) !important;
  cursor: pointer;
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  gap: 6px !important;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04) !important;
  transition: transform 0.16s cubic-bezier(0.16, 1, 0.3, 1), background 0.15s ease, border-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease !important;
  box-sizing: border-box !important;
  user-select: none;
}

.kb-card-export-btn:hover,
.kb-title-row .social-export-btn:hover {
  background: var(--bg-tertiary) !important;
  border-color: var(--border-strong) !important;
  color: var(--accent-primary) !important;
  transform: translateY(-0.5px);
  box-shadow: 0 3px 8px rgba(0, 0, 0, 0.08) !important;
}

.kb-card-export-btn:active,
.kb-title-row .social-export-btn:active {
  transform: scale(0.95) !important;
}

/* ─── Tabs Navigation Container & Scroll Chevrons ──────────────────── */
.kb-toolbar .lib-toolbar-navigation {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
  overflow: hidden;
  border-radius: 12px;
  padding-top: 8px !important;
}

.kb-toolbar .knowledge-tabs {
  flex: 1 1 auto;
  overflow-x: auto;
  scroll-behavior: smooth;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding: 2px 2px !important;
}

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

.kb-tabs-edge {
  position: absolute;
  top: 8px;
  bottom: 0;
  width: 52px;
  display: flex;
  align-items: center;
  z-index: 10;
  pointer-events: none;
  transition: opacity 0.2s ease;
}

.kb-tabs-edge-prev {
  left: 0;
  justify-content: flex-start;
  padding-left: 2px;
  background: linear-gradient(to right, var(--bg-glass, var(--bg-primary)) 55%, transparent);
}

.kb-tabs-edge-next {
  right: 0;
  justify-content: flex-end;
  padding-right: 2px;
  background: linear-gradient(to left, var(--bg-glass, var(--bg-primary)) 55%, transparent);
}

.kb-tabs-scroll-btn {
  pointer-events: auto !important;
  width: 30px;
  height: 100%;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  border-radius: 8px;
  transition: color 0.15s ease, transform 0.15s ease, background 0.15s ease;
}

.kb-tabs-scroll-btn svg {
  display: block;
}

.kb-tabs-scroll-btn:hover {
  color: var(--accent-primary);
  background: rgba(234, 101, 0, 0.12);
  transform: scale(1.15);
}