/* recsys_dashboard/styles.css */

/* --- Design Tokens & Variables --- */
:root {
  --bg-primary: #0F1117;
  --bg-secondary: #161A23;
  --bg-card: #1E2330;
  --border-color: #2D3548;
  --border-hover: #3E4962;
  
  --text-main: #E2E8F0;
  --text-muted: #8A98B0;
  --text-inverse: #0F1117;

  --color-green: #1D9E75;
  --color-green-trans: rgba(29, 158, 117, 0.15);
  
  --color-orange: #EF9F27;
  --color-orange-trans: rgba(239, 159, 39, 0.15);
  
  --color-red: #E24B4A;
  --color-red-trans: rgba(226, 75, 74, 0.15);

  --color-blue: #3B82F6;
  --color-blue-trans: rgba(59, 130, 246, 0.15);

  --color-purple: #8B5CF6;
  --color-purple-trans: rgba(139, 92, 246, 0.15);

  --color-grey: #64748B;
  --color-grey-trans: rgba(100, 116, 139, 0.15);

  --font-sans: 'Outfit', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

/* --- Base & Scrollbar --- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--border-hover);
}

/* --- Global Layout --- */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 2rem;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

.header-logo-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo-icon-box {
  background: linear-gradient(135deg, var(--color-green), var(--color-blue));
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-inverse);
}

.logo-icon {
  width: 1.5rem;
  height: 1.5rem;
}

.header-logo-group h1 {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.header-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* --- Toggle Switch styling --- */
.toggle-switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 22px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--border-color);
  transition: var(--transition-fast);
  border-radius: 22px;
}

.slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background-color: var(--text-main);
  transition: var(--transition-fast);
  border-radius: 50%;
}

input:checked + .slider {
  background-color: var(--color-green);
}

input:focus + .slider {
  box-shadow: 0 0 1px var(--color-green);
}

input:checked + .slider:before {
  transform: translateX(22px);
}

.toggle-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-main);
}

/* Status indicator badge */
.mode-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background-color: var(--bg-card);
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  border: 1px solid var(--border-color);
  font-size: 0.8rem;
  font-weight: 500;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.dot-green { background-color: var(--color-green); box-shadow: 0 0 6px var(--color-green); }
.dot-yellow { background-color: var(--color-orange); box-shadow: 0 0 6px var(--color-orange); }
.dot-red { background-color: var(--color-red); box-shadow: 0 0 6px var(--color-red); }

/* --- Tab Navigation --- */
.app-nav-bar {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 2rem;
  gap: 1rem;
}

.nav-tabs {
  display: flex;
  gap: 0.75rem;
}

.tab-btn {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.5rem 1rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition-fast);
}

.tab-btn:hover {
  color: var(--text-main);
  border-color: var(--border-hover);
  background-color: rgba(255, 255, 255, 0.02);
}

.tab-btn.active {
  color: var(--text-main);
  border-color: var(--text-main);
  background-color: rgba(255, 255, 255, 0.05);
  box-shadow: 0 0 0 1px var(--text-main);
}

.tab-icon {
  width: 1rem;
  height: 1rem;
}

/* --- Search Action Bar --- */
.action-search-bar {
  flex-grow: 1;
  max-width: 500px;
}

.search-form {
  display: none;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
}

.search-form.active {
  display: flex;
}

.search-form input {
  flex-grow: 1;
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-main);
  padding: 0.5rem 0.75rem;
  padding-left: 2.25rem;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

.search-form input:focus {
  outline: none;
  border-color: var(--color-green);
  box-shadow: 0 0 0 1px var(--color-green);
}

.search-input-icon {
  position: absolute;
  margin-left: 0.75rem;
  width: 1rem;
  height: 1rem;
  color: var(--text-muted);
}

.search-form {
  position: relative;
}

.search-banner-text {
  font-size: 0.85rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.inline-icon {
  width: 0.95rem;
  height: 0.95rem;
  color: var(--color-blue);
}

/* --- Buttons --- */
.btn {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.5rem 1rem;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-primary {
  background-color: var(--color-green);
  color: var(--text-inverse);
}

.btn-primary:hover {
  background-color: #178361;
}

.btn-secondary {
  background-color: transparent;
  border-color: var(--border-color);
  color: var(--text-main);
}

.btn-secondary:hover {
  border-color: var(--border-hover);
  background-color: rgba(255, 255, 255, 0.03);
}

/* --- Cards Styling --- */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transition: border-color var(--transition-fast);
}

.card:hover {
  border-color: var(--border-hover);
}

.card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-main);
}

.card-header-icon {
  width: 1.15rem;
  height: 1.15rem;
  color: var(--text-muted);
}

/* --- Main Layout Container --- */
.app-main-content {
  flex-grow: 1;
  padding: 2rem;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
}

/* --- Empty States --- */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 5rem 2rem;
  background-color: var(--bg-secondary);
  border: 1px dashed var(--border-color);
  border-radius: 16px;
  max-width: 600px;
  margin: 4rem auto;
}

.empty-icon {
  width: 3.5rem;
  height: 3.5rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.empty-icon.error {
  color: var(--color-red);
}

.empty-state h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.empty-state p {
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 400px;
}

.empty-substate {
  padding: 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  border: 1px dashed var(--border-color);
  border-radius: 8px;
  background-color: rgba(0, 0, 0, 0.1);
}

/* --- Badges --- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.55rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
}

.badge-green {
  background-color: var(--color-green-trans);
  color: #5eead4;
  border: 1px solid rgba(29, 158, 117, 0.4);
}

.badge-orange {
  background-color: var(--color-orange-trans);
  color: #fdba74;
  border: 1px solid rgba(239, 159, 39, 0.4);
}

.badge-red {
  background-color: var(--color-red-trans);
  color: #fca5a5;
  border: 1px solid rgba(226, 75, 74, 0.4);
}

.badge-purple {
  background-color: var(--color-purple-trans);
  color: #d8b4fe;
  border: 1px solid rgba(139, 92, 246, 0.4);
}

.badge-blue {
  background-color: var(--color-blue-trans);
  color: #93c5fd;
  border: 1px solid rgba(59, 130, 246, 0.4);
}

.badge-grey {
  background-color: var(--color-grey-trans);
  color: #cbd5e1;
  border: 1px solid rgba(100, 116, 139, 0.4);
}

/* User profile specific outline badges */
.badge-outline-green {
  border: 1px solid var(--color-green);
  color: var(--color-green);
  background: transparent;
}
.badge-outline-orange {
  border: 1px solid var(--color-orange);
  color: var(--color-orange);
  background: transparent;
}
.badge-outline-grey {
  border: 1px solid var(--text-muted);
  color: var(--text-muted);
  background: transparent;
}

/* --- Shared Grid & Layout structures --- */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.metric-card {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 1.25rem;
}

.metric-title {
  font-size: 0.8rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.metric-value {
  font-family: var(--font-mono);
  font-size: 1.75rem;
  font-weight: 600;
  color: var(--text-main);
}

.metric-subtitle {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

/* Text Colors */
.text-green { color: var(--color-green); }
.text-orange { color: var(--color-orange); }
.text-red { color: var(--color-red); }

/* --- 1. Product View --- */
.product-header-card {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.product-icon-container {
  background-color: var(--border-color);
  width: 4rem;
  height: 4rem;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-icon {
  width: 2rem;
  height: 2rem;
  color: var(--color-orange);
}

.product-info-details h2 {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.product-subtext {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.product-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.split-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 1.25rem;
}

@media (max-width: 1024px) {
  .split-grid, .split-grid-user {
    grid-template-columns: 1fr !important;
  }
}

/* FP-Growth Rules List */
.rules-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.rule-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.rule-row:hover {
  transform: translateX(4px);
  background-color: rgba(255, 255, 255, 0.04);
}

.rule-antecedent {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.product-id-tag {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.85rem;
}

.product-id-tag.highlight {
  color: var(--color-orange);
}

.rule-clickable:hover {
  text-decoration: underline;
  opacity: 0.85;
}

.rule-arrow-icon {
  width: 0.95rem;
  height: 0.95rem;
  color: var(--text-muted);
}


.rule-metrics {
  display: flex;
  gap: 0.5rem;
}

.badge-conf {
  background-color: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: var(--text-main);
  font-family: var(--font-mono);
}

.badge-lift {
  background-color: var(--color-purple-trans);
  border: 1px solid rgba(139, 92, 246, 0.3);
  color: #c084fc;
  font-family: var(--font-mono);
}

/* Bar Chart components */
.bar-chart-container {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.75rem;
}

.bar-chart-row {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.bar-label {
  width: 75px;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.bar-track {
  flex-grow: 1;
  background-color: var(--bg-primary);
  height: 12px;
  border-radius: 6px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  border-radius: 6px;
  transition: width 0.6s cubic-bezier(0.1, 0.8, 0.2, 1);
}

.bar-fill-view { background-color: var(--color-grey); }
.bar-fill-cart { background-color: var(--color-orange); }
.bar-fill-purchase { background-color: var(--color-green); }

.bar-value {
  width: 50px;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 500;
}

/* Conversion indicators */
.conversion-section {
  border-top: 1px solid var(--border-color);
  padding-top: 1.25rem;
}

.conversion-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.35rem;
}

.conversion-title {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.conversion-value {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 600;
}

.conversion-sub {
  display: flex;
  justify-content: space-between;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.comparison-track {
  background-color: var(--bg-primary);
  height: 8px;
  border-radius: 4px;
  position: relative;
  overflow: visible;
}

.comparison-bar {
  background-color: var(--color-green);
  height: 100%;
  border-radius: 4px;
  max-width: 100%;
}

.comparison-marker {
  position: absolute;
  top: -4px;
  width: 4px;
  height: 16px;
  background-color: var(--color-orange);
  border-radius: 2px;
  box-shadow: 0 0 4px var(--color-orange);
}

/* --- 2. User View --- */
.user-header-card {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.user-avatar-container {
  background: linear-gradient(135deg, var(--color-purple), var(--color-blue));
  width: 4rem;
  height: 4rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--border-color);
}

.user-avatar-text {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-inverse);
  letter-spacing: 0.05em;
}

.user-info-details h2 {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.user-subtext {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.user-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.split-grid-user {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.right-user-column {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

/* Interaction Timeline */
.timeline-card {
  display: flex;
  flex-direction: column;
}

.timeline-container {
  padding-left: 0.75rem;
  border-left: 2px solid var(--border-color);
  margin-left: 0.75rem;
  margin-top: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  position: relative;
}

.timeline-item {
  position: relative;
}

.timeline-dot {
  position: absolute;
  left: -18px; /* Alignment math: offset border line + width of dot */
  top: 5px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--color-grey);
  border: 2px solid var(--bg-card);
}

.timeline-dot.dot-purchase {
  background-color: var(--color-green);
  box-shadow: 0 0 6px var(--color-green);
}

.timeline-dot.dot-cart {
  background-color: var(--color-orange);
  box-shadow: 0 0 6px var(--color-orange);
}

.timeline-content {
  padding-left: 0.5rem;
}

.timeline-time {
  font-size: 0.75rem;
  color: var(--text-muted);
  display: block;
}

.timeline-text {
  font-size: 0.9rem;
}

.timeline-product-id {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text-main);
}

.timeline-price {
  font-family: var(--font-mono);
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-left: 0.35rem;
}

/* Personalized Recommendations List */
.recommendations-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.recommendation-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.85rem 1rem;
  background-color: rgba(255, 255, 255, 0.02);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: 8px;
  transition: transform var(--transition-fast), background-color var(--transition-fast);
}

.recommendation-item:hover {
  transform: translateX(4px);
  background-color: rgba(255, 255, 255, 0.04);
}

.recommendation-icon-box {
  background-color: rgba(255, 255, 255, 0.05);
  width: 2.5rem;
  height: 2.5rem;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.rec-icon {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--text-muted);
}

.recommendation-info {
  flex-grow: 1;
}

.recommendation-info h4 {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.15rem;
}

.recommendation-info p {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.15rem;
}

.recommendation-category {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Isolation Forest feature bar chart */
.features-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.feature-bar-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.feature-label {
  width: 130px;
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.feature-bar-track {
  flex-grow: 1;
  background-color: var(--bg-primary);
  height: 8px;
  border-radius: 4px;
  overflow: hidden;
}

.feature-bar-fill {
  height: 100%;
  border-radius: 4px;
}

.fill-green { background-color: var(--color-green); }
.fill-red { background-color: var(--color-red); }

.feature-value {
  width: 60px;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
}

.card-footnote {
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-top: 1rem;
  border-top: 1px solid var(--border-color);
  padding-top: 0.5rem;
}

/* --- 3. Cold Start View --- */
.intro-card {
  margin-bottom: 1.5rem;
}

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

.intro-subtitle {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
}

.alert-banner {
  display: flex;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: 8px;
  margin-top: 1rem;
  font-size: 0.85rem;
}

.alert-banner.warning {
  background-color: var(--color-red-trans);
  border: 1px solid rgba(226, 75, 74, 0.3);
  color: #fca5a5;
}

.alert-icon {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}

/* Catalog selector section */
.catalog-section {
  margin-bottom: 1.5rem;
}

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

.section-header h3 {
  font-size: 0.95rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.selection-counter {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

.catalog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 0.75rem;
}

.catalog-item {
  padding: 0.85rem;
  cursor: pointer;
  user-select: none;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-fast), border-color var(--transition-fast), background-color var(--transition-fast);
}

.catalog-item:hover {
  transform: translateY(-2px);
  border-color: var(--border-hover);
}

.catalog-item-active {
  border-color: var(--color-blue);
  background-color: rgba(59, 130, 246, 0.05);
}

.catalog-item:focus, .catalog-item:focus-visible {
  outline: none;
  border-color: var(--color-green);
  box-shadow: 0 0 0 2px rgba(29, 158, 117, 0.5);
  transform: translateY(-2px);
}

.catalog-item-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.select-checkbox {
  width: 1rem;
  height: 1rem;
  color: var(--text-muted);
  transition: var(--transition-fast);
}

.select-checkbox.checked {
  color: var(--color-blue);
  fill: rgba(59, 130, 246, 0.2);
}

.catalog-brand {
  font-size: 0.7rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.catalog-id {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 0.15rem;
}

.catalog-category {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.catalog-price {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
  margin-top: auto;
}

/* Cold Start Rec Styling override */
.cold-start-recs-card {
  margin-bottom: 1.5rem;
}

.cold-start-rec-item:hover {
  transform: translateX(4px);
  border-color: var(--border-hover);
}

.icon-svd .rec-icon {
  color: var(--color-blue);
}

.icon-fp .rec-icon {
  color: var(--color-green);
}

/* --- Footer --- */
.app-footer {
  text-align: center;
  padding: 2rem;
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: auto;
}

/* --- Animations --- */
.fade-in {
  animation: fadeIn var(--transition-normal) forwards;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Quick Select Bar ─────────────────────────────────────────────────────── */
.quick-select-bar {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 2rem;
  display: none;
  flex-direction: column;
  gap: 0.75rem;
}

.quick-select-bar.active {
  display: flex;
}

.quick-select-header {
  display: flex;
  align-items: center;
  width: 100%;
}

.quick-select-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  white-space: nowrap;
  margin-right: 0.75rem;
  flex-shrink: 0;
}

.chips-scroll-area {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  overflow-x: auto;
  scrollbar-width: thin;
  width: 100%;
  padding-bottom: 0.25rem;
}

/* Chip base */
.quick-chip {
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1px;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.35rem 0.65rem;
  cursor: pointer;
  transition: border-color var(--transition-fast),
              background-color var(--transition-fast),
              transform var(--transition-fast);
  white-space: nowrap;
  flex-shrink: 0;
  user-select: none;
}

.quick-chip:hover, .quick-chip:focus, .quick-chip:focus-visible {
  outline: none;
  border-color: var(--color-green);
  background-color: rgba(29, 158, 117, 0.07);
  transform: translateY(-1px);
}

.quick-chip.active-chip {
  border-color: var(--color-green);
  background-color: rgba(29, 158, 117, 0.12);
  box-shadow: 0 0 0 1px rgba(29, 158, 117, 0.3);
}

.chip-name {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-main);
}

.chip-sub {
  font-size: 0.68rem;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.chip-badge {
  font-size: 0.62rem;
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
  font-weight: 600;
  margin-top: 2px;
}

.chip-badge.normal {
  background-color: var(--color-green-trans);
  color: #5eead4;
}

.chip-badge.anomalo {
  background-color: var(--color-red-trans);
  color: #fca5a5;
}

/* --- Category Filter Bar --- */
.cat-filter-bar {
  display: flex;
  flex-wrap: nowrap;
  gap: 0.5rem;
  width: 100%;
  overflow-x: auto;
  scrollbar-width: none; /* Hide scrollbar for a cleaner look */
}
.cat-filter-bar::-webkit-scrollbar {
  display: none;
}

.cat-filter-pill {
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: 99px;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 0.72rem;
  font-weight: 500;
  padding: 0.2rem 0.65rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  text-transform: capitalize;
}

.cat-filter-pill:hover {
  border-color: var(--color-green);
  color: var(--color-green);
  background-color: var(--color-green-trans);
}

.cat-filter-pill.active {
  background-color: var(--color-green-trans);
  border-color: var(--color-green);
  color: var(--color-green);
  font-weight: 600;
}

/* --- Dropdown Menu --- */
.dropdown-container {
  position: relative;
  display: inline-block;
}

.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 0.5rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
  z-index: 100;
  min-width: 150px;
  overflow: hidden;
}

.dropdown-menu.show {
  display: block;
}

.dropdown-menu button {
  width: 100%;
  background: none;
  border: none;
  color: var(--text-main);
  padding: 0.75rem 1rem;
  text-align: left;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: background-color var(--transition-fast);
}

.dropdown-menu button i {
  width: 1rem;
  height: 1rem;
  color: var(--text-muted);
}

.dropdown-menu button:hover {
  background-color: rgba(255, 255, 255, 0.05);
}

/* --- Modals --- */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 1000;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(3px);
}

.modal-overlay.show {
  display: flex;
}

.modal-content {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  width: 90%;
  max-width: 450px;
  padding: 1.5rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8);
  transform: translateY(20px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.1, 0.8, 0.2, 1);
}

.modal-overlay.show .modal-content {
  transform: translateY(0);
  opacity: 1;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1rem;
}

.modal-header h3 {
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.2rem;
  border-radius: 4px;
}

.modal-close:hover {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--text-main);
}

/* Forms */
.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group select {
  width: 100%;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  color: var(--text-main);
  padding: 0.65rem 0.75rem;
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-green);
  box-shadow: 0 0 0 1px var(--color-green);
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-color);
}

.product-selection-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  max-height: 200px;
  overflow-y: auto;
  padding: 0.5rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

.product-selection-grid label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  cursor: pointer;
  margin: 0;
  color: var(--text-main);
  background: var(--bg-secondary);
  padding: 0.4rem;
  border-radius: 4px;
}

.product-selection-grid label:hover {
  background: rgba(255, 255, 255, 0.05);
}

/* ── Retrain Modal ─────────────────────────────────────────── */
.modal-retrain-content {
  max-width: 680px;
  width: 100%;
}

.retrain-step-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-green);
  margin-bottom: 0.35rem;
}

.retrain-description {
  font-size: 0.88rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

/* Drop Zone */
.csv-drop-zone {
  border: 2px dashed var(--border-color);
  border-radius: 12px;
  padding: 2rem;
  text-align: center;
  cursor: pointer;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-primary);
}

.csv-drop-zone:hover,
.csv-drop-zone.drag-over {
  border-color: var(--color-green);
  background-color: var(--color-green-trans);
}

.csv-drop-zone p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.csv-file-info {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--color-green-trans);
  border: 1px solid rgba(29, 158, 117, 0.3);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  font-size: 0.88rem;
  color: var(--text-main);
  margin-top: 0.75rem;
}

/* Column Mapping Grid */
.column-map-grid {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  max-height: 320px;
  overflow-y: auto;
  padding-right: 0.25rem;
}

.column-map-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.6rem 0.85rem;
}

.column-map-row .req-col {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-orange);
}

.column-map-row .arrow {
  color: var(--text-muted);
  font-size: 0.8rem;
}

.column-map-row select {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  padding: 0.35rem 0.6rem;
  cursor: pointer;
  appearance: none;
  outline: none;
  width: 100%;
}

.column-map-row select:focus {
  border-color: var(--color-green);
}

/* Category Selection */
.category-select-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 0.65rem;
  margin-bottom: 1.25rem;
}

.category-card {
  background: var(--bg-primary);
  border: 2px solid var(--border-color);
  border-radius: 10px;
  padding: 0.85rem 1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  user-select: none;
  position: relative;
}

.category-card:hover {
  border-color: var(--color-green);
  background: var(--color-green-trans);
}

.category-card.selected {
  border-color: var(--color-green);
  background: var(--color-green-trans);
  box-shadow: 0 0 0 1px var(--color-green);
}

.category-card .cat-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-main);
  text-transform: capitalize;
}

.category-card .cat-stats {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
  font-family: var(--font-mono);
}

.category-card .check-badge {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  width: 18px;
  height: 18px;
  background: var(--color-green);
  border-radius: 50%;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  color: white;
  font-weight: 700;
}

.category-card.selected .check-badge {
  display: flex;
}

/* Running box */
.retrain-running-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  padding: 2rem;
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  text-align: center;
}

.retrain-spinner {
  width: 3rem;
  height: 3rem;
  border: 3px solid var(--border-color);
  border-top-color: var(--color-green);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* Status box */
.retrain-status-box {
  background: var(--bg-primary);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 1rem;
  font-size: 0.82rem;
  margin-top: 1rem;
}

.retrain-status-box.status-success { border-color: var(--color-green); }
.retrain-status-box.status-error   { border-color: var(--color-red); }
.retrain-status-box.status-running { border-color: var(--color-orange); }