/* ===================================================================
   Models Page - Detailed Model Specifications
   Editorial design for model metadata and usage statistics
   =================================================================== */

/* Header Compact Variant */
.header-compact {
  padding: var(--space-12) 0;
}

.header-compact .header-brand {
  margin-bottom: 0;
}

.header-compact .subtitle {
  display: none;
}

/* Navigation Active State */
.nav-links a.active {
  color: var(--accent-primary);
  border-bottom-color: var(--accent-primary);
}

/* Intro Section */
.intro-section {
  max-width: var(--content-width);
  margin: var(--space-16) auto var(--space-12);
  text-align: center;
}

.intro-section h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-6);
  line-height: 1.2;
}

.intro-section .lead {
  font-family: var(--font-sans);
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 42rem;
  margin: 0 auto var(--space-8);
}

.intro-section .lead a {
  color: var(--accent-primary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition-base);
}

.intro-section .lead a:hover {
  border-bottom-color: var(--accent-primary);
}

/* Sort Controls */
.sort-controls {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-3);
  margin-top: var(--space-8);
  max-width: var(--content-width);
  margin-left: auto;
  margin-right: auto;
}

.sort-controls label {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.sort-select {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-primary);
  background: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: 6px;
  padding: var(--space-2) var(--space-4);
  cursor: pointer;
  transition: all var(--transition-base);
}

.sort-select:hover {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(217, 119, 6, 0.1);
}

.sort-select:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(217, 119, 6, 0.15);
}

/* Value Metric Explanation */
.value-explanation {
  display: flex;
  gap: var(--space-4);
  margin-top: var(--space-6);
  padding: var(--space-6);
  background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
  border: 1px solid #6ee7b7;
  border-left: 4px solid #059669;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(5, 150, 105, 0.1);
  animation: slideDown 0.3s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.explanation-icon {
  font-size: 1.5rem;
  line-height: 1;
  flex-shrink: 0;
}

.explanation-content {
  flex: 1;
  min-width: 0;
}

.explanation-content h3 {
  font-family: var(--font-sans);
  font-size: 1.125rem;
  font-weight: 700;
  color: #065f46;
  margin: 0 0 var(--space-3) 0;
}

.explanation-content p {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  line-height: 1.6;
  color: #047857;
  margin: 0 0 var(--space-3) 0;
}

.explanation-content p:last-child {
  margin-bottom: 0;
}

.explanation-content .formula {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  background: rgba(255, 255, 255, 0.7);
  padding: var(--space-3);
  border-radius: 4px;
  border: 1px solid #6ee7b7;
  margin: var(--space-3) 0;
}

.explanation-content .note {
  font-size: 0.875rem;
  font-style: italic;
  color: #065f46;
  margin-top: var(--space-4);
}

/* Models Grid */
.models-grid {
  max-width: var(--content-width);
  margin: 0 auto;
  padding-bottom: var(--space-24);
}

/* Loading State */
.loading-state {
  text-align: center;
  padding: var(--space-20) 0;
  color: var(--text-tertiary);
}

/* Error State */
.error-state {
  max-width: 600px;
  margin: var(--space-16) auto;
  padding: var(--space-8);
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 8px;
  text-align: center;
}

.error-state p {
  color: #991b1b;
  font-weight: 500;
}

/* Provider Section */
.provider-section {
  margin-bottom: var(--space-16);
}

.provider-heading {
  font-family: var(--font-sans);
  font-size: 1rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-tertiary);
  border-bottom: 2px solid var(--border-default);
  padding-bottom: var(--space-3);
  margin-bottom: var(--space-8);
}

.provider-models {
  display: grid;
  gap: var(--space-8);
}

/* Model Card */
.model-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 8px;
  padding: var(--space-8);
  box-shadow: var(--shadow-sm);
  scroll-margin-top: calc(var(--space-16) + 60px);
  transition: all var(--transition-base);
  overflow-wrap: break-word;
  word-wrap: break-word;
  min-width: 0;
}

.model-card:hover {
  border-color: var(--border-default);
  box-shadow: var(--shadow-md);
}

.model-card.highlighted {
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px rgba(217, 119, 6, 0.15);
  animation: highlightPulse 2s ease-out;
}

@keyframes highlightPulse {
  0%, 100% { box-shadow: 0 0 0 3px rgba(217, 119, 6, 0.15); }
  50% { box-shadow: 0 0 0 6px rgba(217, 119, 6, 0.25); }
}

/* Model Header */
.model-header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
  flex-wrap: wrap;
}

.provider-badge {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  background: var(--slate-100);
  border-radius: 999px;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-tertiary);
}

.model-name {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
  line-height: 1.2;
}

/* Rank Badge */
.rank-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 3rem;
  padding: var(--space-2) var(--space-3);
  background: linear-gradient(135deg, var(--accent-primary) 0%, #ea580c 100%);
  color: white;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 800;
  border-radius: 6px;
  margin-left: auto;
  box-shadow: 0 2px 4px rgba(217, 119, 6, 0.2);
  letter-spacing: 0.025em;
}

.rank-badge.rank-1 {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  box-shadow: 0 2px 8px rgba(245, 158, 11, 0.4);
  font-size: 1rem;
}

.rank-badge.rank-2 {
  background: linear-gradient(135deg, #94a3b8 0%, #64748b 100%);
  box-shadow: 0 2px 6px rgba(148, 163, 184, 0.3);
}

.rank-badge.rank-3 {
  background: linear-gradient(135deg, #d97706 0%, #c2410c 100%);
  box-shadow: 0 2px 6px rgba(217, 119, 6, 0.3);
}

/* Model Description */
.model-description {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: var(--space-6);
}

/* Evaluation Performance Section */
.evaluation-performance {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: var(--space-6);
  margin-bottom: var(--space-6);
}

.evaluation-performance .section-heading {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-tertiary);
  margin-bottom: var(--space-4);
}

.overall-score-display {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-4);
  background: linear-gradient(135deg, rgba(217, 119, 6, 0.05), rgba(234, 88, 12, 0.05));
  border: 1px solid rgba(217, 119, 6, 0.2);
  border-radius: 6px;
  margin-bottom: var(--space-5);
}

.overall-score-display .label {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
}

.overall-score-display .score {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--accent-primary);
}

/* Evaluation Categories */
.eval-categories {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.eval-category {
  border: 1px solid var(--border-subtle);
  border-radius: 4px;
  overflow: hidden;
}

.eval-category summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-primary);
  cursor: pointer;
  user-select: none;
  transition: background var(--transition-base);
}

.eval-category summary:hover {
  background: var(--bg-surface);
}

.eval-category .category-name {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-primary);
}

.eval-category .category-score {
  font-family: var(--font-display);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--accent-primary);
}

.evals-list {
  padding: var(--space-3) var(--space-4);
  background: var(--bg-primary);
  border-top: 1px solid var(--border-subtle);
}

.eval-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--border-subtle);
}

.eval-item:last-child {
  border-bottom: none;
}

.eval-item .eval-name {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  color: var(--text-secondary);
}

.eval-item .eval-score {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Model Specs Grid */
.model-specs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(200px, 100%), 1fr));
  gap: var(--space-5);
  padding: var(--space-6);
  background: var(--slate-100);
  border-radius: 6px;
  margin-bottom: var(--space-6);
}

.spec {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.spec .label {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-tertiary);
}

.spec .value {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-primary);
  overflow-wrap: break-word;
  word-wrap: break-word;
}

.spec-highlight .label {
  color: var(--accent-primary);
}

.spec-highlight .value {
  color: var(--accent-primary);
  font-size: 1.125rem;
  font-weight: 700;
}

.spec-value .value {
  color: #059669 !important;
}

/* Usage Stats Section */
.usage-stats {
  margin-top: var(--space-6);
  padding: var(--space-6);
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  border-radius: 6px;
  border-left: 4px solid var(--accent-primary);
}

.usage-heading {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin: 0 0 var(--space-4) 0;
}

.usage-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(140px, 100%), 1fr));
  gap: var(--space-4);
}

.usage-stats .stat {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.usage-stats .stat .label {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--slate-700);
}

.usage-stats .stat .value {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.usage-stats .stat .value.cost-highlight {
  color: var(--accent-primary);
  font-size: 1.25rem;
  font-weight: 800;
}

/* No Data State */
.usage-stats.no-data {
  background: var(--slate-100);
  border-left-color: var(--slate-400);
}

.usage-stats.no-data .usage-heading {
  color: var(--text-secondary);
}

.usage-stats.no-data .no-data-message {
  color: var(--text-tertiary);
  font-style: italic;
  font-size: 0.9375rem;
  margin: 0;
}

/* Capabilities Section */
.capabilities {
  margin-top: var(--space-6);
  border-top: 1px solid var(--border-subtle);
  padding-top: var(--space-6);
}

.capabilities summary {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--accent-primary);
  cursor: pointer;
  user-select: none;
  list-style: none;
  transition: color var(--transition-base);
}

.capabilities summary::-webkit-details-marker {
  display: none;
}

.capabilities summary::before {
  content: '▸ ';
  display: inline-block;
  transition: transform var(--transition-base);
}

.capabilities[open] summary::before {
  transform: rotate(90deg);
}

.capabilities summary:hover {
  color: var(--amber-500);
}

.capabilities-content {
  margin-top: var(--space-4);
  padding-left: var(--space-6);
}

.capabilities-content ul {
  list-style: disc;
  padding-left: var(--space-6);
  margin-bottom: var(--space-4);
}

.capabilities-content li {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.capabilities-content p {
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: var(--space-3);
}

.capabilities-content p:last-child {
  margin-bottom: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
  .intro-section {
    margin: var(--space-12) auto var(--space-10);
    padding: 0 var(--space-4);
  }

  .models-grid {
    padding: 0 var(--space-4) var(--space-16);
  }

  .model-card {
    padding: var(--space-5);
  }

  .model-name {
    font-size: 1.5rem;
  }

  .rank-badge {
    min-width: 2.5rem;
    padding: var(--space-1) var(--space-2);
    font-size: 0.8125rem;
  }

  .rank-badge.rank-1 {
    font-size: 0.875rem;
  }

  .evaluation-performance {
    padding: var(--space-4);
  }

  .overall-score-display {
    padding: var(--space-3);
  }

  .overall-score-display .score {
    font-size: 1.125rem;
  }

  .model-specs {
    grid-template-columns: 1fr;
    gap: var(--space-4);
    padding: var(--space-5);
  }

  .usage-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
  }

  .provider-heading {
    font-size: 0.875rem;
  }

  .sort-controls {
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-2);
  }

  .sort-select {
    width: 100%;
  }

  .value-explanation {
    flex-direction: column;
    gap: var(--space-3);
    padding: var(--space-5);
    margin-top: var(--space-5);
  }

  .explanation-icon {
    font-size: 1.25rem;
  }

  .explanation-content h3 {
    font-size: 1rem;
  }

  .explanation-content p {
    font-size: 0.875rem;
  }

  .explanation-content .formula {
    font-size: 0.8125rem;
    padding: var(--space-2);
  }
}

/* Very Small Mobile - Single Column Layouts */
@media (max-width: 480px) {
  .intro-section {
    padding: 0 var(--space-3);
  }

  .models-grid {
    padding: 0 var(--space-3) var(--space-12);
  }

  .model-card {
    padding: var(--space-4);
  }

  .model-specs {
    padding: var(--space-4);
  }

  .usage-grid {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }

  .usage-stats {
    padding: var(--space-4);
  }

  .model-name {
    font-size: 1.375rem;
  }

  .value-explanation {
    padding: var(--space-4);
    margin-top: var(--space-4);
  }

  .explanation-content h3 {
    font-size: 0.9375rem;
  }

  .explanation-content p {
    font-size: 0.8125rem;
  }

  .explanation-content .formula {
    font-size: 0.75rem;
  }
}

@media (min-width: 1024px) {
  .usage-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}