/**
 * TubeRaker Classifier Module Styles
 * Video analysis and classification UI (PATENT-47)
 */

/* ===== Classifier Page ===== */
.classifier-page {
  max-width: 80rem;
  margin: 0 auto;
}

/* Hero Section */
.classifier-hero {
  text-align: center;
  padding: var(--spacing-3xl) var(--spacing-md) var(--spacing-2xl);
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  border-radius: var(--radius-2xl);
  margin-bottom: var(--spacing-2xl);
}

.hero-content {
  max-width: 50rem;
  margin: 0 auto;
}

.hero-badge {
  margin-bottom: var(--spacing-lg);
}

.hero-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-tight);
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-2xl);
  line-height: var(--line-height-relaxed);
}

/* Analysis Form */
.analyze-form {
  margin-top: var(--spacing-xl);
}

.form-group-inline {
  display: flex;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.form-input-wrapper {
  flex: 1;
  position: relative;
}

.form-input-wrapper .form-icon {
  position: absolute;
  left: var(--spacing-md);
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  pointer-events: none;
}

.form-input-wrapper .form-input {
  padding-left: calc(var(--spacing-md) * 2.5);
}

.input-validation {
  position: absolute;
  top: 100%;
  left: 0;
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
}

.validation-success {
  color: var(--color-success);
  background: var(--color-success-bg);
}

.validation-error {
  color: var(--color-error);
  background: var(--color-error-bg);
}

.form-hint {
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
  text-align: center;
}

.btn-spinner {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
}

/* Stats Overview */
.classifier-stats {
  margin-bottom: var(--spacing-2xl);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15.625rem, 1fr));
  gap: var(--spacing-lg);
}

.stat-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  background: var(--bg-elevated);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.stat-card:hover {
  transform: translateY(-0.125rem);
  box-shadow: var(--shadow-lg);
}

.stat-icon {
  flex-shrink: 0;
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-lg);
}

.stat-icon-primary {
  background: var(--color-brand-primary);
  color: white;
}

.stat-icon-success {
  background: var(--color-success);
  color: white;
}

.stat-icon-info {
  background: var(--color-info);
  color: white;
}

.stat-content {
  flex: 1;
}

.stat-value {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: var(--spacing-xs);
}

.stat-label {
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Recent Analyses Section */
.classifier-analyses {
  margin-bottom: var(--spacing-2xl);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-xl);
  gap: var(--spacing-lg);
}

.section-title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--text-primary);
  margin: 0;
}

.section-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* Analyses Grid */
.analyses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(17.5rem, 1fr));
  gap: var(--spacing-lg);
}

.analysis-card {
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.analysis-thumbnail {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  overflow: hidden;
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
}

.analysis-thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-base);
}

.analysis-card:hover .analysis-thumbnail img {
  transform: scale(1.05);
}

.analysis-score {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: white;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(0.5rem);
  border-radius: var(--radius-lg);
}

.analysis-content {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.analysis-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  line-height: var(--line-height-normal);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.analysis-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
  margin-bottom: var(--spacing-md);
}

.meta-divider {
  color: var(--border-secondary);
}

.analysis-call-number {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  background: var(--bg-secondary);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-md);
  display: inline-block;
  margin-top: auto;
}

.analysis-delete {
  position: absolute;
  top: var(--spacing-md);
  left: var(--spacing-md);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.analysis-card:hover .analysis-delete {
  opacity: 1;
}

/* Density Badge Categories */
.density-badge--chill {
  background: var(--color-success);
}

.density-badge--moderate {
  background: var(--color-info);
}

.density-badge--dense {
  background: var(--color-warning);
}

.density-badge--hyper {
  background: var(--color-error);
}

/* Empty State */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3xl);
  text-align: center;
}

.empty-state-icon {
  color: var(--text-tertiary);
  margin-bottom: var(--spacing-lg);
  opacity: 0.5;
}

.empty-state-title {
  font-size: var(--font-size-2xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.empty-state-description {
  font-size: var(--font-size-base);
  color: var(--text-secondary);
  max-width: 31.25rem;
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-xl);
}

/* Loading State */
.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-3xl);
  gap: var(--spacing-lg);
  color: var(--text-secondary);
}

/* ===== Result Page ===== */
.classifier-result {
  max-width: 80rem;
  margin: 0 auto;
}

.result-loading,
.result-error {
  min-height: 25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
}

.breadcrumb-item {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-sm);
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumb-item:hover {
  color: var(--text-primary);
}

/* Result Header */
.result-header {
  margin-bottom: var(--spacing-2xl);
}

.result-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-tight);
}

.result-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  font-size: var(--font-size-base);
  color: var(--text-secondary);
}

.meta-item {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
}

/* Result Grid */
.result-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.result-main {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

.result-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

/* Video Embed */
.video-embed-container {
  background: var(--bg-elevated);
  border-radius: var(--radius-xl);
  padding: var(--spacing-lg);
  border: 1px solid var(--border-primary);
}

.video-embed {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 aspect ratio */
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.video-embed iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
  border-radius: var(--radius-lg);
}

/* Density Section */
.density-section {
  display: flex;
  flex-direction: column;
}

.density-gauge-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-xl);
  position: relative;
}

.density-gauge {
  display: block;
  max-width: 12.5rem;
  width: 100%;
  height: auto;
}

.density-gauge__ring {
  stroke-dasharray: 0 534;
  transition: stroke-dasharray 1.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.density-gauge__score {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.score-value {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  line-height: 1;
  margin-bottom: var(--spacing-xs);
}

.score-label {
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Call Number Display */
.call-number-display {
  text-align: center;
  margin-top: var(--spacing-xl);
  padding-top: var(--spacing-xl);
  border-top: 1px solid var(--border-primary);
}

.call-number-label {
  font-size: var(--font-size-sm);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-sm);
}

.call-number-value {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
}

.density-category {
  text-align: center;
  margin-top: var(--spacing-md);
}

/* Metrics Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.metric-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--bg-elevated);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
}

.metric-icon {
  flex-shrink: 0;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
}

.metric-content {
  flex: 1;
}

.metric-label {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-xs);
}

.metric-value {
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
}

.metric-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-xs) 0;
  font-size: var(--font-size-sm);
}

.metric-row span {
  color: var(--text-secondary);
}

.metric-row strong {
  color: var(--text-primary);
  font-weight: 600;
}

/* Badge Preview */
.badge-preview {
  margin-bottom: var(--spacing-md);
}

.badge-mini {
  position: relative;
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  overflow: hidden;
  padding: var(--spacing-md);
  text-align: center;
}

.badge-mini img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
}

.badge-mini-score {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: white;
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-sm);
}

.badge-mini-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
  line-height: var(--line-height-normal);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.badge-mini-branding {
  font-size: var(--font-size-xs);
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.badge-actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

/* Result Actions */
.result-actions {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

/* Form Input Group */
.form-input-group {
  display: flex;
  gap: var(--spacing-sm);
}

.form-input-group .form-input {
  flex: 1;
}

/* ===== Compare Page ===== */
.classifier-compare {
  max-width: 80rem;
  margin: 0 auto;
}

.compare-header {
  margin-bottom: var(--spacing-2xl);
}

.page-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
}

.page-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
}

/* Video Selector */
.video-selector {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(12.5rem, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.video-select-card {
  position: relative;
}

.video-select-checkbox {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.video-select-label {
  display: flex;
  flex-direction: column;
  padding: var(--spacing-md);
  background: var(--bg-elevated);
  border: 0.125rem solid var(--border-primary);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
}

.video-select-label:hover {
  border-color: var(--border-secondary);
}

.video-select-checkbox:checked + .video-select-label {
  border-color: var(--color-brand-primary);
  background: var(--bg-secondary);
}

.video-select-thumbnail {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-sm);
}

.video-select-info {
  flex: 1;
}

.video-select-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-xs);
  line-height: var(--line-height-normal);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.video-select-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.compare-actions {
  display: flex;
  justify-content: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-primary);
}

/* Comparison Toggle */
.comparison-toggle {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-xl);
}

.btn-group {
  display: inline-flex;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.btn-group .btn {
  border-radius: 0;
  border-right: 1px solid var(--border-primary);
}

.btn-group .btn:first-child {
  border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.btn-group .btn:last-child {
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  border-right: none;
}

.btn-group .btn.active {
  background: var(--color-brand-primary);
  color: white;
  border-color: var(--color-brand-primary);
}

/* Comparison Cards */
.comparison-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(17.5rem, 1fr));
  gap: var(--spacing-lg);
}

.comparison-card {
  position: relative;
  overflow: hidden;
}

.comparison-thumbnail {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  margin: calc(var(--spacing-lg) * -1) calc(var(--spacing-lg) * -1) var(--spacing-md);
}

.comparison-score {
  position: absolute;
  top: var(--spacing-md);
  right: var(--spacing-md);
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: white;
  border-radius: var(--radius-lg);
}

.comparison-content {
  padding: 0;
}

.comparison-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  line-height: var(--line-height-normal);
}

.comparison-metrics {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

/* Comparison Table */
.table-container {
  overflow-x: auto;
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-lg);
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--border-primary);
}

.table th {
  background: var(--bg-secondary);
  font-weight: 600;
  color: var(--text-primary);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.table td {
  color: var(--text-secondary);
}

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

.table code {
  font-family: var(--font-family-mono);
  font-size: var(--font-size-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--bg-secondary);
  border-radius: var(--radius-sm);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .result-grid {
    grid-template-columns: 1fr;
  }

  .result-sidebar {
    order: -1;
  }
}

@media (max-width: 768px) {
  .hero-title {
    font-size: var(--font-size-3xl);
  }

  .form-group-inline {
    flex-direction: column;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .analyses-grid {
    grid-template-columns: 1fr;
  }

  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .comparison-cards {
    grid-template-columns: 1fr;
  }

  .video-selector {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  .classifier-hero {
    padding: var(--spacing-2xl) var(--spacing-md);
  }

  .hero-title {
    font-size: var(--font-size-2xl);
  }

  .result-title {
    font-size: var(--font-size-2xl);
  }

  .result-meta {
    flex-wrap: wrap;
  }

  .density-gauge-container {
    padding: var(--spacing-md);
  }

  .score-value {
    font-size: var(--font-size-3xl);
  }
}