/* ==========================================================================
   HFBoard: Hugging Face Open Model Hub Explorer
   Style System matching Snapfacts Light Theme & Card Architecture
   ========================================================================== */

:root {
  --hf-bg-page: #f8fafc;
  --hf-bg-card: #ffffff;
  --hf-bg-subtle: #f1f5f9;
  --hf-border: #e2e8f0;
  --hf-border-hover: #cbd5e1;
  --hf-text-main: #0f172a;
  --hf-text-muted: #64748b;
  --hf-text-subtle: #94a3b8;
  
  /* Colorblind-Safe Vibrant Data Palette */
  --hf-accent-blue: #0284c7;
  --hf-accent-cobalt: #1d4ed8;
  --hf-accent-cyan: #00d2ff;
  --hf-accent-teal: #0d9488;
  --hf-accent-amber: #d97706;
  --hf-accent-rose: #e11d48;
  --hf-accent-purple: #7c3aed;
  
  --hf-radius-sm: 6px;
  --hf-radius-md: 10px;
  --hf-radius-lg: 16px;
  --hf-shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06);
  --hf-shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
  --hf-shadow-lg: 0 12px 28px rgba(15, 23, 42, 0.12);
  --hf-font-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --hf-font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* HFBoard Dark Theme */
:root[data-theme="dark"],
[data-theme="dark"],
body.dark-theme {
  --hf-bg-page: #070a10;
  --hf-bg-card: #0f172a;
  --hf-bg-subtle: #1e293b;
  --hf-border: #1e293b;
  --hf-border-hover: #334155;
  --hf-text-main: #f8fafc;
  --hf-text-muted: #94a3b8;
  --hf-text-subtle: #64748b;
  --hf-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --hf-shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --hf-shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.6);
}

[data-theme="dark"] .hf-suggestions-box,
[data-theme="dark"] .hf-search-input:focus,
[data-theme="dark"] .hf-modal-content {
  background: var(--hf-bg-card);
}

/* Base Wrapper */
.hf-board-container {
  font-family: var(--hf-font-body);
  color: var(--hf-text-main);
  background: var(--hf-bg-page);
  padding: 1.5rem 0 4rem 0;
  min-height: 80vh;
}

/* Master Header Block */
.hf-master-header {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--hf-border);
  padding-bottom: 1.5rem;
}

.hf-header-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
}

.hf-title-group h2 {
  font-family: var(--hf-font-display);
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--hf-text-main);
  margin: 0 0 0.35rem 0;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.hf-title-badge {
  font-family: var(--hf-font-body);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: rgba(2, 132, 199, 0.12);
  color: var(--hf-accent-blue);
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  border: 1px solid rgba(2, 132, 199, 0.25);
}

.hf-subtitle {
  font-size: 0.95rem;
  color: var(--hf-text-muted);
  margin: 0;
  line-height: 1.5;
}

.hf-status-block {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--hf-bg-card);
  padding: 0.5rem 0.85rem;
  border-radius: var(--hf-radius-md);
  border: 1px solid var(--hf-border);
  box-shadow: var(--hf-shadow-sm);
  font-size: 0.85rem;
}

.hf-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 600;
  font-size: 0.8rem;
}
.hf-status-live { color: #16a34a; }
.hf-status-cached { color: #d97706; }
.hf-status-offline { color: #64748b; }

.hf-refreshed-time {
  color: var(--hf-text-muted);
  border-left: 1px solid var(--hf-border);
  padding-left: 0.65rem;
  font-size: 0.8rem;
}

/* Two Main Header Switchers (MODELS vs LICENSES) */
.hf-main-tabs {
  display: inline-flex;
  background: var(--hf-bg-subtle);
  padding: 0.35rem;
  border-radius: 999px;
  border: 1px solid var(--hf-border);
  gap: 0.25rem;
}

.hf-main-tab-btn {
  background: transparent;
  border: none;
  font-family: var(--hf-font-display);
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--hf-text-muted);
  padding: 0.55rem 1.4rem;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hf-main-tab-btn:hover {
  color: var(--hf-text-main);
}

.hf-main-tab-btn.active {
  background: var(--hf-bg-card);
  color: var(--hf-accent-blue);
  box-shadow: 0 2px 6px rgba(15, 23, 42, 0.08);
}

/* 9 Subheader Filter Bar (Horizontal Scrollable) */
.hf-subheader-bar {
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  padding: 0.25rem 0 0.5rem 0;
  scrollbar-width: thin;
  -webkit-overflow-scrolling: touch;
}

.hf-subheader-bar::-webkit-scrollbar {
  height: 4px;
}
.hf-subheader-bar::-webkit-scrollbar-thumb {
  background: var(--hf-border-hover);
  border-radius: 4px;
}

.hf-sub-btn {
  white-space: nowrap;
  background: var(--hf-bg-card);
  border: 1px solid var(--hf-border);
  padding: 0.45rem 1rem;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--hf-text-muted);
  cursor: pointer;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.hf-sub-btn:hover {
  border-color: var(--hf-accent-blue);
  color: var(--hf-accent-blue);
  background: rgba(2, 132, 199, 0.03);
}

.hf-sub-btn.active {
  background: var(--hf-accent-blue);
  color: #ffffff;
  border-color: var(--hf-accent-blue);
  box-shadow: 0 2px 8px rgba(2, 132, 199, 0.25);
}

/* Definition Note Banner */
.hf-definition-note {
  background: rgba(2, 132, 199, 0.05);
  border-left: 3.5px solid var(--hf-accent-blue);
  border-radius: 0 var(--hf-radius-sm) var(--hf-radius-sm) 0;
  padding: 0.65rem 1rem;
  font-size: 0.85rem;
  color: #0369a1;
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  line-height: 1.45;
}

/* Toolbar & Filter Controls */
.hf-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  justify-content: space-between;
  background: var(--hf-bg-card);
  padding: 1rem;
  border-radius: var(--hf-radius-md);
  border: 1px solid var(--hf-border);
  box-shadow: var(--hf-shadow-sm);
  margin-bottom: 1.75rem;
}

.hf-search-wrapper {
  position: relative;
  flex: 1;
  min-width: 260px;
}

.hf-search-input {
  width: 100%;
  padding: 0.6rem 2.2rem 0.6rem 2.4rem;
  border-radius: var(--hf-radius-sm);
  border: 1px solid var(--hf-border);
  font-family: var(--hf-font-body);
  font-size: 0.9rem;
  color: var(--hf-text-main);
  background: var(--hf-bg-subtle);
  transition: all 0.2s;
  box-sizing: border-box;
}

.hf-search-input:focus {
  outline: none;
  border-color: var(--hf-accent-blue);
  background: #ffffff;
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

.hf-search-icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--hf-text-subtle);
  font-size: 0.9rem;
  pointer-events: none;
}

.hf-search-clear {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--hf-text-subtle);
  cursor: pointer;
  padding: 0.2rem;
  font-size: 0.85rem;
}

.hf-suggestions-box {
  position: absolute;
  top: 105%;
  left: 0;
  right: 0;
  background: #ffffff;
  border: 1px solid var(--hf-border);
  border-radius: var(--hf-radius-sm);
  box-shadow: var(--hf-shadow-md);
  z-index: 50;
  max-height: 280px;
  overflow-y: auto;
  display: none;
}

.hf-suggestion-item {
  padding: 0.6rem 1rem;
  cursor: pointer;
  font-size: 0.85rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--hf-border);
}
.hf-suggestion-item:last-child { border-bottom: none; }
.hf-suggestion-item:hover, .hf-suggestion-item:focus {
  background: var(--hf-bg-subtle);
  color: var(--hf-accent-blue);
}

.hf-filter-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.hf-select {
  padding: 0.55rem 0.85rem;
  border-radius: var(--hf-radius-sm);
  border: 1px solid var(--hf-border);
  background: #ffffff;
  font-family: var(--hf-font-body);
  font-size: 0.85rem;
  color: var(--hf-text-main);
  cursor: pointer;
}

.hf-btn-tool {
  background: var(--hf-bg-card);
  border: 1px solid var(--hf-border);
  color: var(--hf-text-muted);
  padding: 0.55rem 0.85rem;
  border-radius: var(--hf-radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: all 0.15s;
}

.hf-btn-tool:hover {
  background: var(--hf-bg-subtle);
  color: var(--hf-text-main);
  border-color: var(--hf-border-hover);
}

.hf-btn-tool.active {
  background: rgba(2, 132, 199, 0.1);
  color: var(--hf-accent-blue);
  border-color: var(--hf-accent-blue);
}

/* Secondary Filter Panel (Collapsible) */
.hf-filter-panel {
  display: none;
  background: var(--hf-bg-card);
  border: 1px solid var(--hf-border);
  border-radius: var(--hf-radius-md);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--hf-shadow-sm);
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
}
.hf-filter-panel.open {
  display: grid;
}

.hf-filter-group label {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--hf-text-muted);
  letter-spacing: 0.06em;
  margin-bottom: 0.4rem;
}

/* Home-page-Style Trending Rails */
.hf-trending-rails {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(310px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.hf-rail-card {
  background: var(--hf-bg-card);
  border: 1px solid var(--hf-border);
  border-radius: var(--hf-radius-md);
  padding: 1.15rem;
  box-shadow: var(--hf-shadow-sm);
  display: flex;
  flex-direction: column;
}

.hf-rail-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.85rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--hf-border);
}

.hf-rail-title {
  font-family: var(--hf-font-display);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--hf-text-main);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.hf-rail-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.hf-rail-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  padding: 0.4rem 0.5rem;
  border-radius: var(--hf-radius-sm);
  transition: background 0.15s;
}
.hf-rail-item:hover {
  background: var(--hf-bg-subtle);
}

.hf-rail-item-name {
  font-weight: 600;
  color: var(--hf-text-main);
  text-decoration: none;
  max-width: 190px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.hf-rail-item-name:hover {
  color: var(--hf-accent-blue);
}

.hf-rail-item-stat {
  font-size: 0.78rem;
  color: var(--hf-text-muted);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* Charts Grid Section */
.hf-charts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(460px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

@media (max-width: 768px) {
  .hf-charts-grid {
    grid-template-columns: 1fr;
  }
}

.hf-chart-card {
  background: var(--hf-bg-card);
  border: 1px solid var(--hf-border);
  border-radius: var(--hf-radius-md);
  padding: 1.25rem;
  box-shadow: var(--hf-shadow-sm);
  display: flex;
  flex-direction: column;
}

.hf-chart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.hf-chart-title {
  font-family: var(--hf-font-display);
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0;
  color: var(--hf-text-main);
}

.hf-chart-tools {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.hf-chart-viewport {
  width: 100%;
  min-height: 320px;
  position: relative;
}

.hf-table-fallback {
  width: 100%;
  overflow-x: auto;
  margin-top: 0.5rem;
  display: none;
}
.hf-table-fallback.visible {
  display: block;
}

.hf-fallback-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}
.hf-fallback-table th, .hf-fallback-table td {
  padding: 0.5rem 0.75rem;
  text-align: left;
  border-bottom: 1px solid var(--hf-border);
}
.hf-fallback-table th {
  background: var(--hf-bg-subtle);
  font-weight: 600;
  color: var(--hf-text-muted);
}

/* Model Cards Grid */
.hf-cards-section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.hf-cards-count {
  font-size: 0.9rem;
  color: var(--hf-text-muted);
}

.hf-models-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

.hf-model-card {
  background: var(--hf-bg-card);
  border: 1px solid var(--hf-border);
  border-radius: var(--hf-radius-md);
  padding: 1.25rem;
  box-shadow: var(--hf-shadow-sm);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all 0.2s ease;
  position: relative;
}

.hf-model-card:hover {
  border-color: var(--hf-border-hover);
  box-shadow: var(--hf-shadow-md);
  transform: translateY(-2px);
}

.hf-card-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.65rem;
  gap: 0.5rem;
}

.hf-author-tag {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--hf-text-muted);
}

.hf-gated-badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.15rem 0.45rem;
  border-radius: 999px;
  background: #fef2f2;
  color: #dc2626;
  border: 1px solid #fecaca;
  text-transform: uppercase;
}

.hf-model-id-link {
  font-family: var(--hf-font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--hf-text-main);
  text-decoration: none;
  margin-bottom: 0.5rem;
  line-height: 1.35;
  display: block;
  word-break: break-word;
}
.hf-model-id-link:hover {
  color: var(--hf-accent-blue);
}

.hf-card-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.85rem;
}

.hf-badge {
  font-size: 0.75rem;
  padding: 0.2rem 0.55rem;
  border-radius: var(--hf-radius-sm);
  background: var(--hf-bg-subtle);
  color: var(--hf-text-muted);
  font-weight: 500;
}

.hf-badge-task {
  background: rgba(2, 132, 199, 0.08);
  color: var(--hf-accent-blue);
  font-weight: 600;
}

.hf-badge-license {
  border: 1px solid var(--hf-border);
}
.hf-badge-license-commercial {
  background: rgba(16, 185, 129, 0.1);
  color: #059669;
  border-color: rgba(16, 185, 129, 0.3);
}
.hf-badge-license-restricted {
  background: rgba(217, 119, 6, 0.1);
  color: #b45309;
  border-color: rgba(217, 119, 6, 0.3);
}

.hf-card-metrics {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid var(--hf-border);
  padding-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--hf-text-muted);
}

.hf-metric-item {
  display: flex;
  align-items: center;
  gap: 0.3rem;
}

.hf-card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.75rem;
}

.hf-btn-compare {
  background: transparent;
  border: 1px solid var(--hf-border);
  color: var(--hf-text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.3rem 0.65rem;
  border-radius: var(--hf-radius-sm);
  cursor: pointer;
  transition: all 0.15s;
}

.hf-btn-compare:hover, .hf-btn-compare.selected {
  background: var(--hf-accent-blue);
  color: #ffffff;
  border-color: var(--hf-accent-blue);
}

/* LICENSES TAB SPECIFIC STYLES */
.hf-license-kpis {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.hf-kpi-card {
  background: var(--hf-bg-card);
  border: 1px solid var(--hf-border);
  border-radius: var(--hf-radius-md);
  padding: 1.25rem;
  box-shadow: var(--hf-shadow-sm);
}

.hf-kpi-title {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--hf-text-muted);
  margin-bottom: 0.35rem;
}

.hf-kpi-value {
  font-family: var(--hf-font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--hf-text-main);
  margin: 0 0 0.25rem 0;
}

.hf-kpi-sub {
  font-size: 0.78rem;
  color: var(--hf-text-subtle);
}

.hf-disclaimer-box {
  background: #fffbeb;
  border: 1px solid #fef3c7;
  border-left: 4px solid #f59e0b;
  border-radius: var(--hf-radius-sm);
  padding: 0.75rem 1rem;
  margin-bottom: 1.5rem;
  font-size: 0.85rem;
  color: #92400e;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.hf-license-table-card {
  background: var(--hf-bg-card);
  border: 1px solid var(--hf-border);
  border-radius: var(--hf-radius-md);
  padding: 1.25rem;
  box-shadow: var(--hf-shadow-sm);
  overflow-x: auto;
}

.hf-license-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.hf-license-table th, .hf-license-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--hf-border);
  text-align: left;
}
.hf-license-table th {
  background: var(--hf-bg-subtle);
  font-weight: 700;
  color: var(--hf-text-muted);
}
.hf-license-table tr:hover {
  background: rgba(2, 132, 199, 0.02);
}

/* Floating Compare Tray */
.hf-compare-tray {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(120%);
  background: #0f172a;
  color: #ffffff;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  box-shadow: var(--hf-shadow-lg);
  display: flex;
  align-items: center;
  gap: 1.25rem;
  z-index: 100;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.hf-compare-tray.visible {
  transform: translateX(-50%) translateY(0);
}

.hf-compare-chips {
  display: flex;
  gap: 0.4rem;
}

.hf-compare-chip {
  background: #1e293b;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
  font-size: 0.8rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.hf-chip-remove {
  background: none;
  border: none;
  color: #94a3b8;
  cursor: pointer;
  padding: 0;
  font-size: 0.75rem;
}

.hf-btn-view-compare {
  background: var(--hf-accent-blue);
  color: #ffffff;
  border: none;
  padding: 0.4rem 1rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
}

/* Compare Modal */
.hf-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(4px);
  z-index: 110;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}
.hf-modal-backdrop.open {
  display: flex;
}

.hf-modal-content {
  background: #ffffff;
  width: 100%;
  max-width: 960px;
  max-height: 85vh;
  border-radius: var(--hf-radius-lg);
  box-shadow: var(--hf-shadow-lg);
  overflow-y: auto;
  padding: 2rem;
  position: relative;
}

.hf-modal-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: var(--hf-bg-subtle);
  border: none;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  cursor: pointer;
  font-size: 1rem;
  color: var(--hf-text-muted);
}

.hf-compare-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1.5rem;
}
.hf-compare-table th, .hf-compare-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--hf-border);
  text-align: left;
}
.hf-compare-table th {
  background: var(--hf-bg-subtle);
  width: 22%;
  font-weight: 700;
}

/* Attribution Footer */
.hf-attribution-footer {
  margin-top: 3rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--hf-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--hf-text-muted);
}

.hf-attribution-footer a {
  color: var(--hf-accent-blue);
  text-decoration: none;
  font-weight: 600;
}
.hf-attribution-footer a:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Model Technical Specifications & Architecture Explorer Styles
   ========================================================================== */

.hf-spec-explorer-card {
  background: var(--hf-bg-card);
  border: 1px solid var(--hf-border);
  border-radius: var(--hf-radius-lg);
  box-shadow: var(--hf-shadow-sm);
  padding: 1.5rem;
  margin-bottom: 2rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.hf-spec-explorer-card:hover {
  border-color: var(--hf-border-hover);
  box-shadow: var(--hf-shadow-md);
}

.hf-spec-header-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--hf-border);
}

.hf-spec-title-group h3 {
  font-family: var(--hf-font-display);
  font-size: 1.35rem;
  font-weight: 700;
  margin: 0 0 0.35rem 0;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: var(--hf-text-main);
}

.hf-spec-badge {
  background: linear-gradient(135deg, rgba(2, 132, 199, 0.12), rgba(124, 58, 237, 0.12));
  color: var(--hf-accent-blue);
  border: 1px solid rgba(2, 132, 199, 0.25);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: 9999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.hf-spec-description {
  margin: 0;
  font-size: 0.88rem;
  color: var(--hf-text-muted);
  line-height: 1.45;
}

/* Metric Selector Pills & Controls Bar */
.hf-spec-controls {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  background: var(--hf-bg-subtle);
  border: 1px solid var(--hf-border);
  border-radius: var(--hf-radius-md);
  padding: 1rem;
  margin-bottom: 1.25rem;
}

.hf-spec-metric-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.hf-spec-control-label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--hf-text-muted);
  min-width: 90px;
}

.hf-spec-metric-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  flex: 1;
}

.hf-spec-metric-btn {
  background: var(--hf-bg-card);
  border: 1px solid var(--hf-border);
  color: var(--hf-text-main);
  padding: 0.4rem 0.8rem;
  font-size: 0.82rem;
  font-weight: 600;
  border-radius: var(--hf-radius-sm);
  cursor: pointer;
  transition: all 0.18s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.hf-spec-metric-btn:hover {
  border-color: var(--hf-accent-blue);
  color: var(--hf-accent-blue);
}

.hf-spec-metric-btn.active {
  background: var(--hf-accent-blue);
  border-color: var(--hf-accent-blue);
  color: #ffffff;
  box-shadow: 0 2px 6px rgba(2, 132, 199, 0.3);
}

.hf-spec-filters-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.hf-spec-filter-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.82rem;
}

.hf-spec-filter-item label {
  font-weight: 600;
  color: var(--hf-text-muted);
}

.hf-spec-filter-select {
  background: var(--hf-bg-card);
  border: 1px solid var(--hf-border);
  color: var(--hf-text-main);
  padding: 0.35rem 0.65rem;
  font-size: 0.82rem;
  border-radius: var(--hf-radius-sm);
  outline: none;
  cursor: pointer;
}

.hf-spec-filter-select:focus {
  border-color: var(--hf-accent-blue);
}

/* Metric Guidance & Exclusion Status Pill */
.hf-spec-metric-summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding: 0.6rem 0.85rem;
  border-radius: var(--hf-radius-sm);
  background: rgba(2, 132, 199, 0.06);
  border-left: 3px solid var(--hf-accent-blue);
  font-size: 0.83rem;
  color: var(--hf-text-main);
  margin-bottom: 1rem;
}

.hf-spec-metric-desc {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hf-spec-excluded-pill {
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--hf-accent-amber);
  background: rgba(217, 119, 6, 0.1);
  padding: 0.2rem 0.55rem;
  border-radius: 9999px;
  border: 1px solid rgba(217, 119, 6, 0.25);
}

/* Chart Canvas */
.hf-spec-chart-viewport {
  width: 100%;
  min-height: 420px;
  height: 460px;
  position: relative;
}

/* Technical Specification Badges */
.hf-arch-badge {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  display: inline-block;
  background: rgba(124, 58, 237, 0.1);
  color: #7c3aed;
  border: 1px solid rgba(124, 58, 237, 0.25);
}

.hf-arch-badge.gemma {
  background: rgba(2, 132, 199, 0.1);
  color: #0284c7;
  border-color: rgba(2, 132, 199, 0.25);
}

.hf-arch-badge.llama {
  background: rgba(37, 99, 235, 0.1);
  color: #2563eb;
  border-color: rgba(37, 99, 235, 0.25);
}

.hf-arch-badge.deepseek {
  background: rgba(13, 148, 136, 0.1);
  color: #0d9488;
  border-color: rgba(13, 148, 136, 0.25);
}

.hf-arch-badge.qwen {
  background: rgba(217, 119, 6, 0.1);
  color: #d97706;
  border-color: rgba(217, 119, 6, 0.25);
}

.hf-quant-badge {
  font-family: ui-monospace, SFMono-Regular, monospace;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  background: #f1f5f9;
  color: #475569;
  border: 1px solid #cbd5e1;
}

.hf-quant-badge.quantized {
  background: rgba(217, 119, 6, 0.12);
  color: #b45309;
  border-color: rgba(217, 119, 6, 0.3);
}

.hf-cap-pill {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.12rem 0.45rem;
  border-radius: 9999px;
  background: #e2e8f0;
  color: #334155;
  display: inline-block;
  margin: 1px;
}

.hf-cap-pill.vision {
  background: rgba(124, 58, 237, 0.12);
  color: #6d28d9;
}

.hf-cap-pill.completion {
  background: rgba(2, 132, 199, 0.12);
  color: #0369a1;
}

.hf-cap-pill.code {
  background: rgba(13, 148, 136, 0.12);
  color: #0f766e;
}

.hf-cap-pill.embedding {
  background: rgba(100, 116, 139, 0.15);
  color: #334155;
}

.hf-param-chip {
  font-family: ui-monospace, monospace;
  font-size: 0.72rem;
  background: var(--hf-bg-subtle);
  border: 1px solid var(--hf-border);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  display: inline-block;
  color: var(--hf-text-main);
  margin-right: 3px;
}

/* Metadata Table below chart */
.hf-spec-table-wrapper {
  margin-top: 1.5rem;
  border-top: 1px solid var(--hf-border);
  padding-top: 1.25rem;
}

.hf-spec-table-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.85rem;
}

.hf-spec-table-header h4 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hf-spec-table-card {
  overflow-x: auto;
  border: 1px solid var(--hf-border);
  border-radius: var(--hf-radius-md);
}

.hf-spec-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
  text-align: left;
}

.hf-spec-table th {
  background: var(--hf-bg-subtle);
  padding: 0.75rem 0.85rem;
  font-weight: 700;
  border-bottom: 2px solid var(--hf-border);
  white-space: nowrap;
  color: var(--hf-text-main);
}

.hf-spec-table td {
  padding: 0.75rem 0.85rem;
  border-bottom: 1px solid var(--hf-border);
  vertical-align: middle;
}

.hf-spec-table tr:hover td {
  background: rgba(2, 132, 199, 0.03);
}

.hf-btn-inspect {
  background: var(--hf-bg-card);
  border: 1px solid var(--hf-accent-blue);
  color: var(--hf-accent-blue);
  padding: 0.3rem 0.65rem;
  font-size: 0.76rem;
  font-weight: 700;
  border-radius: var(--hf-radius-sm);
  cursor: pointer;
  transition: all 0.18s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
}

.hf-btn-inspect:hover {
  background: var(--hf-accent-blue);
  color: #ffffff;
}

/* Model Inspection Dossier Modal */
.hf-spec-modal-body {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 1rem;
}

.hf-spec-modal-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--hf-border);
}

.hf-spec-dossier-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}

.hf-spec-dossier-box {
  background: var(--hf-bg-subtle);
  border: 1px solid var(--hf-border);
  border-radius: var(--hf-radius-md);
  padding: 1rem;
}

.hf-spec-dossier-box h4 {
  font-family: var(--hf-font-display);
  font-size: 0.92rem;
  font-weight: 700;
  margin: 0 0 0.75rem 0;
  color: var(--hf-text-main);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.hf-spec-dossier-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.35rem 0;
  font-size: 0.82rem;
  border-bottom: 1px dashed rgba(148, 163, 184, 0.3);
}

.hf-spec-dossier-row:last-child {
  border-bottom: none;
}

.hf-spec-dossier-label {
  color: var(--hf-text-muted);
  font-weight: 500;
}

.hf-spec-dossier-val {
  font-weight: 700;
  color: var(--hf-text-main);
  font-family: ui-monospace, SFMono-Regular, monospace;
}

.hf-projector-banner {
  background: linear-gradient(135deg, rgba(2, 132, 199, 0.08), rgba(13, 148, 136, 0.08));
  border: 1px solid rgba(2, 132, 199, 0.2);
  border-radius: var(--hf-radius-md);
  padding: 1rem;
}

/* Dark mode overrides for spec explorer */
[data-theme="dark"] .hf-spec-explorer-card {
  background: var(--hf-bg-card);
  border-color: var(--hf-border);
}

[data-theme="dark"] .hf-spec-controls,
[data-theme="dark"] .hf-spec-dossier-box {
  background: #090d16;
  border-color: var(--hf-border);
}

[data-theme="dark"] .hf-spec-metric-btn,
[data-theme="dark"] .hf-spec-filter-select {
  background: #0f172a;
  border-color: var(--hf-border);
  color: var(--hf-text-main);
}

[data-theme="dark"] .hf-spec-metric-btn.active {
  background: var(--hf-accent-blue);
  color: #ffffff;
}

[data-theme="dark"] .hf-spec-table th {
  background: #090d16;
}

[data-theme="dark"] .hf-quant-badge {
  background: #1e293b;
  color: #cbd5e1;
  border-color: #334155;
}

[data-theme="dark"] .hf-cap-pill {
  background: #1e293b;
  color: #cbd5e1;
}

/* Reduced Motion Accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}