/* ═══════════════════════════════════════════════════════════════════════
   Tabla I/O — Standalone Library Page Stylesheet
   ═══════════════════════════════════════════════════════════════════════ */

.library-shell {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  padding: 0 24px 40px;
  display: flex;
  flex-direction: column;
}

/* Header */
.lib-header {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 20px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--border-color);
}

.lib-header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lib-brand {
  color: var(--accent-primary);
  text-decoration: none;
  font-family: 'Outfit', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.lib-header-sep {
  color: var(--text-muted);
  font-size: 1rem;
  opacity: 0.4;
}

.lib-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
}

.lib-title-dropdown {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.lib-title-toggle {
  font-family: 'Outfit', sans-serif;
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-primary);
  background: transparent;
  border: none;
  cursor: pointer;
  outline: none;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  margin-left: -8px;
  border-radius: 6px;
  transition: background 0.2s;
}

.lib-title-toggle:hover {
  background: var(--bg-secondary);
}

.lib-title-toggle svg {
  opacity: 0.5;
  transition: transform 0.2s;
}

.lib-title-dropdown.open .lib-title-toggle svg {
  transform: rotate(180deg);
}

.lib-title-menu {
  position: absolute;
  top: -8px;
  left: -8px;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: 0 8px 32px rgba(0,0,0,0.3);
  min-width: 180px;
  display: none;
  flex-direction: column;
  overflow: hidden;
  z-index: 100;
  padding: 4px 0;
}

.lib-title-dropdown.open .lib-title-menu {
  display: flex;
  animation: fadeIn 0.15s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.98); }
  to { opacity: 1; transform: scale(1); }
}

.lib-title-menu a {
  padding: 8px 16px 8px 12px;
  text-decoration: none;
  color: var(--text-primary);
  font-family: 'Outfit', sans-serif;
  font-size: 1.1rem;
  font-weight: 500;
  transition: background 0.15s;
  display: flex;
  align-items: center;
  gap: 8px;
}

.lib-title-menu a:hover {
  background: var(--bg-secondary);
}

.lib-title-menu a .check-icon {
  width: 18px;
  height: 18px;
  opacity: 0;
}

.lib-title-menu a.active .check-icon {
  opacity: 1;
}

.lib-header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Toolbar Controls */
.lib-toolbar {
  max-width: 1200px;
  width: 100%;
  margin: 24px auto 0;
  padding: 12px 20px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 50px;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
}

.lib-search-box {
  position: relative;
  flex: 1 1 280px;
}

.lib-search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  pointer-events: none;
}

.lib-search-input {
  width: 100%;
  padding: 10px 16px 10px 42px !important;
  font-size: 0.95rem;
  border-radius: 50px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  outline: none;
  transition: all var(--transition-normal);
}

.lib-search-input:focus {
  border-color: var(--accent-primary);
  background: rgba(255, 255, 255, 0.1);
  box-shadow: 0 0 0 3px rgba(var(--accent-rgb), 0.15);
}

.lib-filters {
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 12px;
}

.lib-select {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-primary);
  border-radius: 50px;
  padding: 10px 32px 10px 16px;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lib-select:hover {
  background-color: rgba(255, 255, 255, 0.1);
}

.lib-tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  background: rgba(255, 255, 255, 0.03);
  padding: 4px;
  border-radius: 50px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.lib-tab {
  background: transparent;
  color: var(--text-secondary);
  border: none;
  border-radius: 50px;
  padding: 8px 16px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lib-tab:hover {
  color: var(--text-primary);
}

.lib-tab.active {
  background: var(--accent-primary);
  color: #fff;
  box-shadow: 0 2px 8px rgba(var(--accent-rgb), 0.4);
}

/* Grid of Cards */
.lib-main {
  max-width: 1200px;
  width: 100%;
  margin: 24px auto 0;
  flex: 1;
}

.lib-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.lib-grid-section-title {
  grid-column: 1 / -1; /* Spans the full width of the grid */
  font-family: 'Outfit', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 12px;
  margin-bottom: -4px; /* Slight adjustment to bring cards closer */
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  transition: opacity var(--transition-fast);
  user-select: none;
}

.lib-grid-section-title:hover {
  opacity: 0.8;
}

.section-toggle-icon {
  color: var(--text-muted);
  transition: transform var(--transition-normal);
}

.lib-grid-section-title.collapsed .section-toggle-icon {
  transform: rotate(-180deg);
}

.lib-card {
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.lib-card:hover {
  transform: translateY(-3px);
  border-color: var(--accent-primary);
  background: var(--bg-glass-hover);
  box-shadow: var(--shadow-sm);
}

.lib-card-badge {
  position: absolute;
  top: 14px;
  right: 14px;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 3px 8px;
  border-radius: 4px;
  background: var(--accent-subtle);
  color: var(--accent-primary);
  border: 1px solid var(--accent-sam-glow);
}

.lib-card-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.25;
  margin-top: 10px;
}

.lib-card-taal {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-primary);
}

.lib-card-meta {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.lib-card-meta-dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--text-muted);
}

.lib-card-publisher {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: auto;
  padding-top: 8px;
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Preview Modal */
.lib-preview-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 200;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.lib-preview-overlay.active {
  opacity: 1;
  pointer-events: auto;
}

.lib-preview-modal {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-lg);
  max-width: 900px;
  width: 100%;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-lg);
  transform: scale(0.95);
  transition: transform var(--transition-normal);
}

.lib-preview-overlay.active .lib-preview-modal {
  transform: scale(1);
}

.lib-preview-header {
  padding: 20px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.lib-preview-heading-stack {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.lib-preview-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.lib-preview-subtitle {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.lib-preview-icon-btn,
.lib-preview-close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: none;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  border-radius: 50%;
  transition: all var(--transition-fast);
}

.lib-preview-icon-btn:hover,
.lib-preview-close:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.lib-preview-body {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.lib-preview-meta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  background: var(--bg-secondary);
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.lib-preview-meta-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.lib-preview-meta-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.lib-preview-meta-val {
  font-size: 0.94rem;
  font-weight: 600;
  color: var(--text-primary);
}

.lib-preview-notes {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.5;
  background: var(--bg-secondary);
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--accent-primary);
}

.lib-preview-notation-title {
  font-family: 'Outfit', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 10px;
}

.lib-preview-grid-wrapper {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  background: var(--bg-primary);
  overflow-x: auto;
}

.lib-preview-footer {
  padding: 20px 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

/* Empty State */
.lib-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  font-size: 1rem;
}

/* Abbreviations Bar */
.lib-abbreviations {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 24px;
  padding: 12px 20px;
  margin-bottom: 24px;
  background: var(--bg-glass);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-size: 0.85rem;
  color: var(--text-secondary);
  justify-content: center;
}

.lib-abbreviations span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.lib-abbreviations strong {
  color: var(--text-primary);
  font-weight: 700;
  font-family: 'Outfit', sans-serif;
}

/* Responsive */
@media (max-width: 768px) {
  .lib-header {
    flex-direction: column;
    align-items: flex-start;
    padding: 14px 0;
  }
  .lib-header-right {
    width: 100%;
    justify-content: space-between;
  }
  .lib-toolbar {
    padding: 14px;
  }
  .lib-filters {
    width: 100%;
  }
  .lib-select {
    flex: 1 1 120px;
  }
  .lib-tabs {
    width: 100%;
    justify-content: center;
  }
  .lib-tab {
    flex: 1;
    text-align: center;
  }
  .lib-preview-modal {
    max-height: 95vh;
  }
  .lib-preview-footer {
    flex-direction: column;
  }
  .lib-preview-footer .btn {
    width: 100%;
    justify-content: center;
  }
}