/* ===== ANALYTICS PAGE STYLES ===== */

/* ===== PARTICLE CANVAS ===== */
#page-particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* Section Headings */
.analytics-hero h2,
.analytics-charts h2,
.analytics-powerbi h2,
.analytics-ml h2,
.analytics-story h2,
.analytics-sql h2,
.feature-section h2 {
  background: linear-gradient(135deg, #ff9f00, #ff6b6b);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  filter: drop-shadow(0 0 20px rgba(255, 159, 0, 0.15));
  text-align: center;
  font-size: 2.2rem;
  margin-bottom: 0.5rem;
}

.section-subtitle {
  text-align: center;
  color: #999;
  font-size: 1rem;
  margin-bottom: 2.5rem;
}

/* ===== SECTION 1: IMPACT METRICS HERO ===== */
.analytics-hero {
  padding: 2rem 2rem 4rem;
  max-width: 1200px;
  margin: 0 auto 2rem;
  position: relative;
  z-index: 1;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.metric-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 159, 0, 0.12);
  border-radius: 16px;
  padding: 2rem 1.5rem;
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
  position: relative;
  overflow: hidden;
}

.metric-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #ff9f00, #ff6b6b);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.metric-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 35px rgba(255, 159, 0, 0.2);
  border-color: rgba(255, 159, 0, 0.3);
}

.metric-card:hover::before {
  opacity: 1;
}

.metric-icon {
  font-size: 2rem;
  color: #ff9f00;
  margin-bottom: 1rem;
}

.metric-number {
  display: block;
  font-size: 2.8rem;
  font-weight: 800;
  color: #ff9f00;
  margin-bottom: 0.5rem;
  line-height: 1;
}

.metric-label {
  display: block;
  font-size: 1rem;
  font-weight: 600;
  color: #e6e6e6;
  margin-bottom: 0.25rem;
}

.metric-context {
  display: block;
  font-size: 0.8rem;
  color: #888;
}

/* ===== TAB NAVIGATION ===== */
.analytics-tabs {
  position: sticky;
  top: 70px;
  z-index: 50;
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  background: rgba(20, 20, 30, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-top: 1px solid rgba(255, 159, 0, 0.1);
  border-bottom: 1px solid rgba(255, 159, 0, 0.1);
  overflow-x: auto;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.analytics-tabs::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 22px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 30px;
  color: #aaa;
  font-size: 0.9rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.3s ease;
  white-space: nowrap;
  position: relative;
}

.tab-btn:hover {
  color: #ff9f00;
  background: rgba(255, 159, 0, 0.08);
  border-color: rgba(255, 159, 0, 0.2);
}

.tab-btn.active {
  color: #fff;
  background: linear-gradient(135deg, rgba(255, 159, 0, 0.2), rgba(255, 107, 107, 0.15));
  border-color: rgba(255, 159, 0, 0.4);
  box-shadow: 0 0 20px rgba(255, 159, 0, 0.15);
}

.tab-btn.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 20%;
  right: 20%;
  height: 2px;
  background: linear-gradient(90deg, #ff9f00, #ff6b6b);
  border-radius: 2px;
}

.tab-btn i {
  font-size: 0.85rem;
}

/* ===== TAB PANELS ===== */
.tab-panel {
  display: none;
  position: relative;
  z-index: 1;
  padding-bottom: 2rem;
}

.tab-panel.active {
  display: block;
}

/* Scroll hint at top of tab content */
.tab-panel > section:first-child {
  scroll-margin-top: 140px;
}

/* ===== SECTION 2: INTERACTIVE CHARTS ===== */
.analytics-charts {
  padding: 4rem 2rem;
  max-width: 1200px;
  margin: 2rem auto 4rem;
}

.charts-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.chart-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 159, 0, 0.12);
  border-radius: 16px;
  padding: 1.5rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.chart-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(255, 159, 0, 0.12);
}

.chart-card h3 {
  color: #ff9f00;
  font-size: 1.1rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.chart-wrapper {
  position: relative;
  width: 100%;
  max-height: 320px;
}

.chart-wrapper canvas {
  width: 100% !important;
  max-height: 300px;
}

/* ===== SECTION 3: POWER BI EMBED ===== */
.analytics-powerbi {
  padding: 4rem 2rem;
  max-width: 1000px;
  margin: 2rem auto 4rem;
}

.powerbi-frame {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 159, 0, 0.12);
  border-radius: 16px;
  overflow: hidden;
  min-height: 300px;
}

.powerbi-frame iframe {
  width: 100%;
  height: 500px;
  border: none;
}

.powerbi-placeholder {
  padding: 4rem 2rem;
  text-align: center;
  color: #ccc;
}

.powerbi-placeholder i {
  font-size: 4rem;
  color: rgba(255, 159, 0, 0.3);
  margin-bottom: 1.5rem;
  display: block;
}

.powerbi-placeholder h3 {
  color: #ff9f00;
  margin-bottom: 1rem;
  font-size: 1.4rem;
}

.powerbi-placeholder p {
  color: #999;
  max-width: 500px;
  margin: 0 auto 2rem;
  line-height: 1.6;
}

.powerbi-links {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.powerbi-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.75rem 1.5rem;
  background: rgba(255, 159, 0, 0.1);
  border: 1px solid rgba(255, 159, 0, 0.3);
  border-radius: 10px;
  color: #ff9f00;
  text-decoration: none;
  font-weight: 600;
  transition: all 0.3s ease;
}

.powerbi-link:hover {
  background: #ff9f00;
  color: #fff;
  transform: translateY(-2px);
}

/* ===== SECTION 4: ML PREDICTION DEMO ===== */
.analytics-ml {
  padding: 4rem 2rem;
  max-width: 1100px;
  margin: 2rem auto 4rem;
}

.ml-demo-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.ml-input-panel,
.ml-output-panel {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 159, 0, 0.12);
  border-radius: 16px;
  padding: 2rem;
}

.ml-input-panel h3,
.ml-output-panel h3 {
  color: #ff9f00;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.ml-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.ml-field label {
  display: block;
  font-size: 0.85rem;
  color: #bbb;
  margin-bottom: 0.4rem;
  font-weight: 600;
}

.ml-field select {
  width: 100%;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  color: #e6e6e6;
  font-size: 0.95rem;
  outline: none;
  cursor: pointer;
  transition: border-color 0.3s ease;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23ff9f00' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
}

.ml-field select:focus {
  border-color: #ff9f00;
}

.ml-field select option {
  background: #1a1a1a;
  color: #e6e6e6;
}

.ml-predict-btn {
  padding: 14px 24px;
  background: linear-gradient(135deg, #ff9f00, #ff6b6b);
  border: none;
  border-radius: 12px;
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.3s ease;
  margin-top: 0.5rem;
}

.ml-predict-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(255, 159, 0, 0.4);
}

.ml-price-display {
  text-align: center;
  padding: 1.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 1.5rem;
}

.ml-price-label {
  display: block;
  font-size: 0.85rem;
  color: #999;
  margin-bottom: 0.5rem;
}

.ml-price-value {
  display: block;
  font-size: 3rem;
  font-weight: 800;
  color: #ff9f00;
  line-height: 1;
}

.ml-confidence-section {
  text-align: center;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 1.5rem;
}

.ml-conf-label {
  display: block;
  font-size: 0.85rem;
  color: #999;
  margin-bottom: 0.75rem;
}

#ml-confidence-gauge {
  display: block;
  margin: 0 auto;
}

.ml-conf-value {
  display: block;
  font-size: 1.4rem;
  font-weight: 700;
  color: #ff9f00;
  margin-top: 0.5rem;
}

.ml-factors h4 {
  color: #ccc;
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
}

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

.ml-factors-table th {
  text-align: left;
  padding: 8px 12px;
  font-size: 0.8rem;
  color: #999;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.ml-factors-table td {
  padding: 8px 12px;
  font-size: 0.9rem;
  color: #ccc;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.ml-factors-table .positive {
  color: #4caf50;
  font-weight: 600;
}

.ml-factors-table .negative {
  color: #ff6b6b;
  font-weight: 600;
}

.ml-placeholder-text {
  color: #666;
  font-style: italic;
  text-align: center;
}

/* ===== SECTION 5: DATA STORY ===== */
.analytics-story {
  padding: 4rem 2rem;
  max-width: 900px;
  margin: 2rem auto;
}

.story-progress-bar {
  position: relative;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
  margin-bottom: 3rem;
}

.story-progress-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: linear-gradient(90deg, #ff9f00, #ff6b6b);
  border-radius: 2px;
  width: 0%;
  transition: width 0.4s ease;
}

.story-steps {
  display: flex;
  justify-content: space-between;
  position: relative;
  top: -12px;
}

.story-step {
  font-size: 0.75rem;
  font-weight: 700;
  color: #666;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: color 0.3s ease;
  position: relative;
  padding-top: 16px;
}

.story-step::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  border: 2px solid #444;
  transition: all 0.3s ease;
}

.story-step.active {
  color: #ff9f00;
}

.story-step.active::before {
  background: #ff9f00;
  border-color: #ff9f00;
  box-shadow: 0 0 10px rgba(255, 159, 0, 0.5);
}

.story-chapters {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.story-chapter {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 159, 0, 0.1);
  border-radius: 16px;
  padding: 2rem;
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.story-chapter.visible {
  opacity: 1;
  transform: translateY(0);
}

.chapter-icon {
  font-size: 2rem;
  color: #ff9f00;
  margin-bottom: 1rem;
}

.story-chapter h3 {
  color: #ff9f00;
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
}

.story-chapter p {
  color: #ccc;
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.chapter-metric {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  padding: 1rem 2rem;
  background: rgba(255, 159, 0, 0.08);
  border: 1px solid rgba(255, 159, 0, 0.2);
  border-radius: 12px;
}

.chapter-metric-value {
  font-size: 2rem;
  font-weight: 800;
  color: #ff9f00;
  line-height: 1;
}

.chapter-metric-label {
  font-size: 0.8rem;
  color: #999;
  margin-top: 0.25rem;
}

.chapter-metric-highlight {
  background: rgba(255, 159, 0, 0.15);
  border-color: #ff9f00;
  box-shadow: 0 0 25px rgba(255, 159, 0, 0.2);
}

.chapter-metric-highlight .chapter-metric-value {
  font-size: 2.5rem;
  text-shadow: 0 0 20px rgba(255, 159, 0, 0.5);
}

.glow-chapter {
  border-color: rgba(255, 159, 0, 0.3);
}

.glow-chapter.visible {
  box-shadow: 0 0 30px rgba(255, 159, 0, 0.1);
}

/* ===== SECTION 6: SQL TERMINAL ===== */
.analytics-sql {
  padding: 4rem 2rem;
  max-width: 900px;
  margin: 2rem auto;
}

.sql-terminal {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.08);
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px;
  background: #2d2d2d;
}

.terminal-dots {
  display: flex;
  gap: 6px;
}

.terminal-dots .dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.dot.red { background: #ff5f57; }
.dot.yellow { background: #ffbd2e; }
.dot.green { background: #28c840; }

.terminal-title {
  font-size: 0.8rem;
  color: #999;
  font-family: 'Courier New', Courier, monospace;
}

.terminal-body {
  background: #1a1a2e;
  padding: 1.5rem;
  min-height: 300px;
  max-height: 500px;
  overflow-y: auto;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.9rem;
  scrollbar-width: thin;
  scrollbar-color: #ff9f00 rgba(255, 255, 255, 0.05);
}

.terminal-body::-webkit-scrollbar {
  width: 6px;
}

.terminal-body::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
}

.terminal-body::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #ff9f00, #ff6b6b);
  border-radius: 3px;
}

.terminal-body::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, #ffb733, #ff8585);
}

.terminal-output {
  margin-bottom: 1rem;
}

.terminal-line {
  color: #b8b8b8;
  padding: 2px 0;
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.5;
}

.terminal-line.command {
  color: #ff9f00;
}

.terminal-line.error {
  color: #ff6b6b;
}

.terminal-line.success {
  color: #4caf50;
}

.terminal-line.info {
  color: #64b5f6;
}

.terminal-input-line {
  display: flex;
  align-items: center;
  gap: 8px;
}

.terminal-prompt {
  color: #ff9f00;
  font-weight: 700;
  white-space: nowrap;
}

.terminal-input {
  flex: 1;
  background: transparent;
  border: none;
  color: #e6e6e6;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.9rem;
  outline: none;
  caret-color: #ff9f00;
}

.terminal-input::placeholder {
  color: #555;
}

.sql-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
  justify-content: center;
}

.sql-chip {
  padding: 8px 16px;
  background: rgba(255, 159, 0, 0.08);
  border: 1px solid rgba(255, 159, 0, 0.2);
  border-radius: 20px;
  color: #ff9f00;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: inherit;
}

.sql-chip:hover {
  background: #ff9f00;
  color: #fff;
  transform: translateY(-2px);
}

/* ASCII table styling */
.terminal-table {
  color: #b8b8b8;
  white-space: pre;
  font-family: 'Courier New', Courier, monospace;
  line-height: 1.4;
  overflow-x: auto;
  display: block;
}

/* ===== SHARED FEATURE SECTION STYLES ===== */
.feature-section {
  padding: 4rem 2rem;
  max-width: 1100px;
  margin: 2rem auto 4rem;
  scroll-margin-top: 140px;
}

.feature-container {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 159, 0, 0.12);
  border-radius: 16px;
  padding: 2rem;
}

.feature-btn {
  padding: 10px 20px;
  background: rgba(255, 159, 0, 0.1);
  border: 1px solid rgba(255, 159, 0, 0.3);
  border-radius: 10px;
  color: #ff9f00;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: inherit;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.feature-btn:hover {
  background: rgba(255, 159, 0, 0.2);
  transform: translateY(-2px);
}

.feature-btn.primary {
  background: linear-gradient(135deg, #ff9f00, #ff6b6b);
  border: none;
  color: #fff;
}

.feature-btn.primary:hover {
  box-shadow: 0 6px 20px rgba(255, 159, 0, 0.4);
}

.feature-btn.full-width,
.full-width {
  width: 100%;
  justify-content: center;
  margin-top: 1rem;
}

/* ===== CONFUSION MATRIX ===== */
.threshold-control {
  margin-bottom: 1.5rem;
}

.threshold-control label {
  display: block;
  color: #ccc;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

#cm-threshold-val {
  color: #ff9f00;
  font-weight: 700;
}

.threshold-control input[type="range"] {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  outline: none;
}

.threshold-control input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, #ff9f00, #ff6b6b);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(255, 159, 0, 0.4);
}

.threshold-control input[type="range"]::-moz-range-thumb {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, #ff9f00, #ff6b6b);
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 8px rgba(255, 159, 0, 0.4);
}

.cm-metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 2rem;
}

.cm-metric {
  text-align: center;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.cm-metric-val {
  display: block;
  font-size: 1.6rem;
  font-weight: 700;
  color: #ff9f00;
}

.cm-metric-lbl {
  display: block;
  font-size: 0.75rem;
  color: #888;
  margin-top: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.cm-visuals {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  align-items: start;
}

.cm-matrix-wrap h4,
.cm-roc-wrap h4 {
  color: #ccc;
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

.cm-auc-badge {
  background: rgba(255, 159, 0, 0.15);
  color: #ff9f00;
  padding: 2px 10px;
  border-radius: 12px;
  font-size: 0.8rem;
  margin-left: 8px;
}

.cm-matrix {
  display: flex;
  gap: 0;
  align-items: center;
}

.cm-labels-left {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-right: 8px;
}

.cm-labels-left span {
  height: 80px;
  display: flex;
  align-items: center;
  font-size: 0.75rem;
  color: #999;
  font-weight: 600;
}

.cm-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
}

.cm-header-row {
  grid-column: 1 / -1;
  display: flex;
  justify-content: space-around;
  padding-bottom: 6px;
}

.cm-header-row span {
  font-size: 0.75rem;
  color: #999;
  font-weight: 600;
}

.cm-cell {
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.85rem;
  transition: all 0.3s ease;
}

.cm-tp { background: rgba(76, 175, 80, 0.25); color: #4caf50; }
.cm-tn { background: rgba(33, 150, 243, 0.25); color: #64b5f6; }
.cm-fp { background: rgba(255, 159, 0, 0.25); color: #ff9f00; }
.cm-fn { background: rgba(255, 107, 107, 0.25); color: #ff6b6b; }

.cm-roc-wrap canvas {
  width: 100%;
  max-width: 300px;
  display: block;
}

/* ===== K-MEANS CLUSTERING ===== */
.kmeans-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
  margin-bottom: 1.5rem;
}

.kmeans-k-select label {
  display: block;
  color: #ccc;
  font-weight: 600;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

.kmeans-k-btns {
  display: flex;
  gap: 6px;
}

.kmeans-k-btn {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.05);
  color: #aaa;
  font-weight: 700;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: inherit;
}

.kmeans-k-btn.active,
.kmeans-k-btn:hover {
  background: linear-gradient(135deg, #ff9f00, #ff6b6b);
  color: #fff;
  border-color: transparent;
}

.kmeans-actions {
  display: flex;
  gap: 0.5rem;
}

.kmeans-status {
  color: #888;
  font-size: 0.85rem;
  font-style: italic;
  margin-left: auto;
}

.kmeans-canvas-wrap {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.2);
}

.kmeans-canvas-wrap canvas {
  width: 100%;
  display: block;
  cursor: crosshair;
}

/* ===== DECISION TREE ===== */
.dtree-explainer {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.25rem 1.5rem;
  background: rgba(66, 165, 245, 0.08);
  border: 1px solid rgba(66, 165, 245, 0.2);
  border-radius: 12px;
  margin-bottom: 1.5rem;
}

.dtree-explainer-icon {
  font-size: 1.5rem;
  color: #ffd700;
  flex-shrink: 0;
  margin-top: 2px;
}

.dtree-explainer-text {
  font-size: 0.9rem;
  color: #ccc;
  line-height: 1.6;
}

.dtree-explainer-text strong {
  display: block;
  color: #42a5f5;
  font-size: 0.95rem;
  margin-bottom: 4px;
}

body.light-mode .dtree-explainer {
  background: rgba(66, 165, 245, 0.06);
}

body.light-mode .dtree-explainer-text {
  color: #555;
}

.dtree-narrator {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  padding: 1rem 1.25rem;
  background: rgba(255, 159, 0, 0.08);
  border: 1px solid rgba(255, 159, 0, 0.2);
  border-radius: 10px;
  margin-bottom: 1.5rem;
  animation: narratorFade 0.4s ease;
}

@keyframes narratorFade {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.dtree-narrator-icon {
  font-size: 1.2rem;
  color: #ff9f00;
  flex-shrink: 0;
}

.dtree-narrator-text {
  font-size: 0.88rem;
  color: #ddd;
  line-height: 1.6;
}

body.light-mode .dtree-narrator {
  background: rgba(255, 159, 0, 0.06);
}

body.light-mode .dtree-narrator-text {
  color: #555;
}

.dtree-data-summary {
  font-size: 0.78rem;
  color: #888;
  text-align: center;
  margin-top: 0.5rem;
  font-style: italic;
}

.dtree-controls {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.dtree-layout {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.dtree-data-wrap h4,
.dtree-tree-wrap h4 {
  color: #ccc;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.95rem;
}

.dtree-table-scroll {
  max-height: 350px;
  overflow-y: auto;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  scrollbar-width: thin;
  scrollbar-color: #ff9f00 rgba(255, 255, 255, 0.05);
}

.dtree-table-scroll::-webkit-scrollbar {
  width: 6px;
}

.dtree-table-scroll::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
}

.dtree-table-scroll::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #ff9f00, #ff6b6b);
  border-radius: 3px;
}

.dtree-table-scroll::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, #ffb733, #ff8585);
}

body.light-mode .dtree-table-scroll {
  scrollbar-color: #ff9f00 rgba(0, 0, 0, 0.05);
}

body.light-mode .dtree-table-scroll::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.05);
}

.dtree-dataset {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}

.dtree-dataset th {
  background: rgba(255, 159, 0, 0.12);
  color: #ff9f00;
  padding: 8px 10px;
  text-align: left;
  font-weight: 700;
  position: sticky;
  top: 0;
}

.dtree-dataset td {
  padding: 6px 10px;
  color: #ccc;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.dtree-dataset tr:hover td {
  background: rgba(255, 159, 0, 0.05);
}

.dtree-tree {
  min-height: 200px;
  padding: 1rem;
  background: rgba(0, 0, 0, 0.15);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  overflow-x: auto;
}

.dtree-prompt {
  color: #888;
  font-style: italic;
  text-align: center;
  padding: 3rem 1rem;
}

/* Section scroll indicator between features */
.tab-panel .feature-section + .feature-section::before {
  content: '';
  display: block;
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(255, 159, 0, 0.3), transparent);
  margin: 0 auto 2rem;
  position: relative;
  top: -3rem;
}

/* Tree node styles */
.dtree-node {
  margin: 8px 0;
  padding: 12px 16px;
  border-radius: 12px;
  border-left: 4px solid #ff9f00;
  background: rgba(255, 159, 0, 0.06);
  animation: nodeAppear 0.5s ease;
}

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

.dtree-node-question {
  font-weight: 700;
  color: #ff9f00;
  font-size: 0.95rem;
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.dtree-node-question i {
  font-size: 0.85rem;
}

.dtree-node-why {
  font-size: 0.78rem;
  color: #aaa;
  font-style: italic;
  margin-bottom: 2px;
}

.dtree-node-stats {
  font-size: 0.75rem;
  color: #666;
  display: flex;
  gap: 12px;
  margin-top: 4px;
}

.dtree-node-stats span {
  display: inline-flex;
  align-items: center;
  gap: 3px;
}

.dtree-node-children {
  margin-left: 20px;
  padding-left: 14px;
  border-left: 2px dashed rgba(255, 159, 0, 0.2);
}

.dtree-branch-label {
  font-size: 0.82rem;
  color: #ccc;
  font-weight: 600;
  margin: 8px 0 4px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.dtree-branch-label i {
  color: #ff9f00;
  font-size: 0.7rem;
}

body.light-mode .dtree-branch-label {
  color: #555;
}

.dtree-leaf {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin: 4px 0;
  padding: 8px 16px;
  border-radius: 10px;
  font-weight: 700;
  font-size: 0.88rem;
  animation: nodeAppear 0.5s ease;
}

.dtree-leaf.yes {
  background: rgba(76, 175, 80, 0.15);
  color: #4caf50;
  border: 1px solid rgba(76, 175, 80, 0.3);
}

.dtree-leaf.no {
  background: rgba(255, 107, 107, 0.15);
  color: #ff6b6b;
  border: 1px solid rgba(255, 107, 107, 0.3);
}

.dtree-leaf-reason {
  font-weight: 400;
  font-size: 0.75rem;
  opacity: 0.8;
}

/* ===== BIAS/FAIRNESS DETECTOR ===== */
.bias-controls {
  margin-bottom: 1.5rem;
}

.bias-scenario-select {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.bias-scenario-select label {
  color: #ccc;
  font-weight: 600;
}

.bias-scenario-select select {
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  color: #e6e6e6;
  font-size: 0.95rem;
  outline: none;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23ff9f00' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

.bias-metrics-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.bias-metric-card {
  text-align: center;
  padding: 1.5rem 1rem;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  position: relative;
}

.bias-traffic-light {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  margin: 0 auto 0.75rem;
  transition: background 0.3s ease, box-shadow 0.3s ease;
}

.bias-traffic-light.green {
  background: #4caf50;
  box-shadow: 0 0 12px rgba(76, 175, 80, 0.5);
}

.bias-traffic-light.yellow {
  background: #ffd700;
  box-shadow: 0 0 12px rgba(255, 215, 0, 0.5);
}

.bias-traffic-light.red {
  background: #ff5252;
  box-shadow: 0 0 12px rgba(255, 82, 82, 0.5);
}

.bias-metric-val {
  display: block;
  font-size: 1.8rem;
  font-weight: 700;
  color: #ff9f00;
}

.bias-metric-name {
  display: block;
  font-size: 0.8rem;
  color: #aaa;
  margin-top: 0.25rem;
  font-weight: 600;
}

.bias-metric-tip {
  display: block;
  font-size: 0.7rem;
  color: #666;
  margin-top: 0.5rem;
}

.bias-metric-tip i {
  margin-right: 3px;
}

.bias-chart-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.bias-chart-card {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  padding: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.bias-chart-card h4 {
  color: #ccc;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.bias-chart-card canvas {
  width: 100% !important;
  max-height: 250px;
}

/* ===== A/B TEST CALCULATOR ===== */
.abtest-inputs {
  display: flex;
  align-items: stretch;
  gap: 1.5rem;
  margin-bottom: 0;
}

.abtest-group {
  flex: 1;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  padding: 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.abtest-group h4 {
  color: #ff9f00;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.95rem;
}

.abtest-vs {
  display: flex;
  align-items: center;
  padding: 0 0.5rem;
}

.abtest-vs span {
  font-weight: 800;
  font-size: 1.2rem;
  color: #ff6b6b;
}

.abtest-field {
  margin-bottom: 0.75rem;
}

.abtest-field label {
  display: block;
  font-size: 0.8rem;
  color: #999;
  margin-bottom: 0.3rem;
  font-weight: 600;
}

.abtest-field input {
  width: 100%;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  color: #e6e6e6;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.3s ease;
  box-sizing: border-box;
}

.abtest-field input:focus {
  border-color: #ff9f00;
}

.abtest-results {
  margin-top: 1.5rem;
}

.abtest-verdict {
  text-align: center;
  padding: 1rem;
  border-radius: 10px;
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 1.5rem;
}

.abtest-verdict.significant {
  background: rgba(76, 175, 80, 0.15);
  color: #4caf50;
  border: 1px solid rgba(76, 175, 80, 0.3);
}

.abtest-verdict.not-significant {
  background: rgba(150, 150, 150, 0.15);
  color: #999;
  border: 1px solid rgba(150, 150, 150, 0.3);
}

.abtest-stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.abtest-stat {
  text-align: center;
  padding: 0.75rem;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 8px;
}

.abtest-stat-val {
  display: block;
  font-size: 1.2rem;
  font-weight: 700;
  color: #ff9f00;
}

.abtest-stat-lbl {
  display: block;
  font-size: 0.72rem;
  color: #888;
  margin-top: 0.2rem;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.abtest-chart-wrap canvas {
  width: 100% !important;
  max-height: 250px;
}

/* ===== MONTE CARLO SIMULATOR ===== */
.mc-inputs {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  margin-bottom: 0;
}

.mc-field label {
  display: block;
  font-size: 0.8rem;
  color: #999;
  margin-bottom: 0.3rem;
  font-weight: 600;
}

.mc-field input {
  width: 100%;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  color: #e6e6e6;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.3s ease;
  box-sizing: border-box;
}

.mc-field input:focus {
  border-color: #ff9f00;
}

.mc-visuals {
  margin-top: 1.5rem;
}

.mc-canvas-wrap {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.2);
  margin-bottom: 1.5rem;
}

.mc-canvas-wrap canvas {
  width: 100%;
  display: block;
}

.mc-results {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.mc-stat {
  text-align: center;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.mc-stat-val {
  display: block;
  font-size: 1.2rem;
  font-weight: 700;
  color: #ff9f00;
}

.mc-stat-lbl {
  display: block;
  font-size: 0.7rem;
  color: #888;
  margin-top: 0.25rem;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

/* ===== BAYESIAN VISUALIZER ===== */
.bayes-controls {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.bayes-group h4 {
  color: #ccc;
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
}

.bayes-slider {
  margin-bottom: 0.75rem;
}

.bayes-slider label {
  display: block;
  font-size: 0.8rem;
  color: #999;
  margin-bottom: 0.3rem;
  font-weight: 600;
}

.bayes-slider span {
  color: #ff9f00;
  font-weight: 700;
}

.bayes-slider input[type="range"] {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  outline: none;
}

.bayes-slider input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, #ff9f00, #ff6b6b);
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(255, 159, 0, 0.4);
}

.bayes-slider input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, #ff9f00, #ff6b6b);
  cursor: pointer;
  border: none;
}

.bayes-field {
  margin-bottom: 0.75rem;
}

.bayes-field label {
  display: block;
  font-size: 0.8rem;
  color: #999;
  margin-bottom: 0.3rem;
  font-weight: 600;
}

.bayes-field input {
  width: 100%;
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  color: #e6e6e6;
  font-size: 0.9rem;
  outline: none;
  box-sizing: border-box;
}

.bayes-field input:focus {
  border-color: #ff9f00;
}

.bayes-params {
  background: rgba(255, 159, 0, 0.06);
  border-radius: 10px;
  padding: 1rem;
  font-size: 0.85rem;
  color: #ccc;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  justify-content: center;
}

.bayes-params strong {
  color: #ff9f00;
}

.bayes-canvas-wrap {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.2);
  padding: 1rem;
}

.bayes-canvas-wrap canvas {
  width: 100%;
  display: block;
}

.bayes-legend {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-top: 1rem;
}

.bayes-legend-item {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8rem;
  color: #999;
}

.bayes-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  display: inline-block;
}

.bayes-dot.prior {
  background: #42a5f5;
}

.bayes-dot.likelihood {
  background: #888;
}

.bayes-dot.posterior {
  background: #ff9f00;
}

/* ===== TIME SERIES DECOMPOSITION ===== */
.ts-controls {
  margin-bottom: 1.5rem;
}

.ts-slider {
  max-width: 400px;
}

.ts-slider label {
  display: block;
  color: #ccc;
  font-weight: 600;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

.ts-slider span {
  color: #ff9f00;
  font-weight: 700;
}

.ts-slider input[type="range"] {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  outline: none;
}

.ts-slider input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, #ff9f00, #ff6b6b);
  cursor: pointer;
}

.ts-slider input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, #ff9f00, #ff6b6b);
  cursor: pointer;
  border: none;
}

.ts-charts {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.ts-chart-card {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  padding: 1rem 1.5rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.ts-chart-card h4 {
  color: #ccc;
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.ts-chart-wrap {
  position: relative;
  height: 160px;
}

.ts-chart-wrap canvas {
  width: 100% !important;
  height: 100% !important;
}

/* ===== NEURAL NETWORK PLAYGROUND ===== */
.nn-controls {
  margin-bottom: 1.5rem;
}

.nn-config-group {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
  margin-bottom: 1rem;
}

.nn-field label {
  display: block;
  font-size: 0.8rem;
  color: #999;
  margin-bottom: 0.3rem;
  font-weight: 600;
}

.nn-field select {
  width: 100%;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  color: #e6e6e6;
  font-size: 0.9rem;
  outline: none;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23ff9f00' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

.nn-field select option {
  background: #1a1a1a;
  color: #e6e6e6;
}

.nn-actions {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.nn-metrics {
  display: flex;
  gap: 1.5rem;
  font-size: 0.85rem;
  color: #aaa;
}

.nn-metric-item strong {
  color: #ff9f00;
}

.nn-visuals {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 1.5rem;
}

.nn-canvas-wrap {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.2);
}

.nn-canvas-wrap canvas {
  width: 100%;
  display: block;
}

.nn-arch-wrap {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  padding: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.nn-arch-wrap h4 {
  color: #ccc;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.nn-arch-wrap canvas {
  width: 100%;
  display: block;
}

/* ===== SENTIMENT ANALYZER ===== */
.sent-textarea {
  width: 100%;
  padding: 14px 16px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 12px;
  color: #e6e6e6;
  font-size: 1rem;
  font-family: inherit;
  outline: none;
  resize: vertical;
  min-height: 80px;
  transition: border-color 0.3s ease;
  box-sizing: border-box;
  margin-bottom: 0;
}

.sent-textarea:focus {
  border-color: #ff9f00;
}

.sent-textarea::placeholder {
  color: #666;
}

.sent-results {
  margin-top: 1.5rem;
}

.sent-gauge-wrap {
  text-align: center;
  padding: 1.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  margin-bottom: 1.5rem;
}

.sent-gauge-wrap canvas {
  display: block;
  margin: 0 auto;
}

.sent-score-label {
  margin-top: 0.5rem;
}

.sent-verdict {
  display: block;
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.sent-verdict.positive { color: #4caf50; }
.sent-verdict.negative { color: #ff6b6b; }
.sent-verdict.neutral { color: #ffd700; }

.sent-score-num {
  display: block;
  font-size: 0.85rem;
  color: #888;
}

.sent-breakdown {
  margin-bottom: 1.5rem;
}

.sent-breakdown h4 {
  color: #ccc;
  font-size: 0.95rem;
  margin-bottom: 0.75rem;
}

.sent-words {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.sent-word {
  padding: 5px 12px;
  border-radius: 16px;
  font-size: 0.82rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.sent-word.pos {
  background: rgba(76, 175, 80, 0.15);
  color: #4caf50;
  border: 1px solid rgba(76, 175, 80, 0.3);
}

.sent-word.neg {
  background: rgba(255, 107, 107, 0.15);
  color: #ff6b6b;
  border: 1px solid rgba(255, 107, 107, 0.3);
}

.sent-word.neu {
  background: rgba(255, 255, 255, 0.05);
  color: #888;
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.sent-word .sent-word-score {
  font-size: 0.7rem;
  opacity: 0.7;
}

.sent-stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.sent-stat {
  text-align: center;
  padding: 0.75rem;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.sent-stat-val {
  display: block;
  font-size: 1.4rem;
  font-weight: 700;
  color: #ff9f00;
}

.sent-stat-lbl {
  display: block;
  font-size: 0.72rem;
  color: #888;
  margin-top: 0.2rem;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

/* ===== GRADIENT DESCENT VISUALIZER ===== */
.gd-controls {
  margin-bottom: 1.5rem;
}

.gd-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: flex-end;
  margin-bottom: 1.5rem;
}

.gd-field label {
  display: block;
  font-size: 0.8rem;
  color: #999;
  margin-bottom: 0.3rem;
  font-weight: 600;
}

.gd-field select {
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  color: #e6e6e6;
  font-size: 0.9rem;
  outline: none;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23ff9f00' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

.gd-field select option {
  background: #1a1a1a;
  color: #e6e6e6;
}

.gd-field input[type="range"] {
  width: 200px;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  outline: none;
}

.gd-field input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, #ff9f00, #ff6b6b);
  cursor: pointer;
}

.gd-field input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, #ff9f00, #ff6b6b);
  cursor: pointer;
  border: none;
}

#gd-lr-val {
  color: #ff9f00;
  font-weight: 700;
}

.gd-actions {
  display: flex;
  gap: 0.5rem;
}

.gd-metrics {
  display: flex;
  gap: 1.5rem;
  font-size: 0.85rem;
  color: #aaa;
  margin-left: auto;
}

.gd-metric-item strong {
  color: #ff9f00;
}

.gd-canvas-wrap {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.2);
}

.gd-canvas-wrap canvas {
  width: 100%;
  display: block;
}

/* ===== REGRESSION PLAYGROUND ===== */
.reg-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  align-items: center;
  margin-bottom: 1.5rem;
}

.reg-type-select label {
  display: block;
  color: #ccc;
  font-weight: 600;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

.reg-type-btns {
  display: flex;
  gap: 6px;
}

.reg-type-btn {
  padding: 8px 18px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.05);
  color: #aaa;
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: inherit;
}

.reg-type-btn.active,
.reg-type-btn:hover {
  background: linear-gradient(135deg, #ff9f00, #ff6b6b);
  color: #fff;
  border-color: transparent;
}

.reg-actions {
  display: flex;
  gap: 0.5rem;
}

.reg-stats {
  display: flex;
  gap: 1.5rem;
  font-size: 0.85rem;
  color: #aaa;
  margin-left: auto;
}

.reg-stat-item strong {
  color: #ff9f00;
}

#reg-equation {
  color: #ff9f00;
  font-weight: 700;
  font-family: 'Courier New', monospace;
}

#reg-r2 {
  color: #ff9f00;
  font-weight: 700;
}

.reg-canvas-wrap {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.2);
}

.reg-canvas-wrap canvas {
  width: 100%;
  display: block;
  cursor: crosshair;
}

/* ===== CORRELATION HEATMAP ===== */
.corr-controls {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.corr-dataset-select {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.corr-dataset-select label {
  color: #ccc;
  font-weight: 600;
  font-size: 0.9rem;
}

.corr-dataset-select select {
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 10px;
  color: #e6e6e6;
  font-size: 0.9rem;
  outline: none;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23ff9f00' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

.corr-dataset-select select option {
  background: #1a1a1a;
  color: #e6e6e6;
}

.corr-info {
  font-size: 0.82rem;
  color: #888;
  font-style: italic;
}

.corr-visuals {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  align-items: start;
}

.corr-heatmap-wrap {
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(0, 0, 0, 0.15);
  padding: 0.5rem;
}

.corr-heatmap-wrap canvas {
  width: 100%;
  display: block;
  cursor: pointer;
}

.corr-scatter-wrap {
  background: rgba(255, 255, 255, 0.03);
  border-radius: 12px;
  padding: 1rem;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.corr-scatter-wrap h4 {
  color: #ccc;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.corr-scatter-wrap canvas {
  width: 100%;
  display: block;
}

.corr-scatter-stats {
  font-size: 0.82rem;
  color: #888;
  margin-top: 0.5rem;
  text-align: center;
}

/* ===== DATA PIPELINE SIMULATOR ===== */
.pipe-controls {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.pipe-actions {
  display: flex;
  gap: 0.5rem;
}

.pipe-speed-wrap {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.pipe-speed-wrap label {
  color: #ccc;
  font-weight: 600;
  font-size: 0.85rem;
}

.pipe-speed-wrap select {
  padding: 8px 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  color: #e6e6e6;
  font-size: 0.85rem;
  outline: none;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23ff9f00' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 28px;
}

.pipe-speed-wrap select option {
  background: #1a1a1a;
  color: #e6e6e6;
}

.pipe-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  padding: 2rem 1rem;
  background: rgba(0, 0, 0, 0.15);
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.06);
  margin-bottom: 1.5rem;
  overflow-x: auto;
}

.pipe-stage {
  text-align: center;
  padding: 1.25rem 1rem;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  border: 2px solid rgba(255, 255, 255, 0.1);
  min-width: 100px;
  transition: all 0.4s ease;
  position: relative;
}

.pipe-stage.active {
  border-color: #ff9f00;
  background: rgba(255, 159, 0, 0.1);
  box-shadow: 0 0 20px rgba(255, 159, 0, 0.15);
}

.pipe-stage.done {
  border-color: #4caf50;
  background: rgba(76, 175, 80, 0.08);
}

.pipe-stage.error {
  border-color: #ff6b6b;
  background: rgba(255, 107, 107, 0.08);
}

.pipe-stage-icon {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: #ff9f00;
  transition: color 0.3s ease;
}

.pipe-stage.done .pipe-stage-icon {
  color: #4caf50;
}

.pipe-stage-name {
  font-weight: 700;
  font-size: 0.82rem;
  color: #ccc;
  margin-bottom: 0.25rem;
}

.pipe-stage-count {
  font-size: 1.3rem;
  font-weight: 800;
  color: #ff9f00;
  line-height: 1;
  margin-bottom: 0.25rem;
}

.pipe-stage-status {
  font-size: 0.7rem;
  color: #888;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.pipe-stage.active .pipe-stage-status {
  color: #ff9f00;
}

.pipe-stage.done .pipe-stage-status {
  color: #4caf50;
}

.pipe-arrow {
  color: rgba(255, 159, 0, 0.3);
  font-size: 1.2rem;
  padding: 0 0.75rem;
  transition: color 0.3s ease;
}

.pipe-arrow.active {
  color: #ff9f00;
  animation: arrowPulse 1s ease infinite;
}

@keyframes arrowPulse {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 1; }
}

.pipe-stats {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.pipe-stat {
  text-align: center;
  padding: 0.75rem;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.pipe-stat-val {
  display: block;
  font-size: 1.2rem;
  font-weight: 700;
  color: #ff9f00;
}

.pipe-stat-lbl {
  display: block;
  font-size: 0.7rem;
  color: #888;
  margin-top: 0.2rem;
  text-transform: uppercase;
  letter-spacing: 0.3px;
}

.pipe-log-wrap h4 {
  color: #ccc;
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
  display: flex;
  align-items: center;
  gap: 6px;
}

.pipe-log {
  max-height: 150px;
  overflow-y: auto;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 8px;
  padding: 0.75rem;
  font-family: 'Courier New', monospace;
  font-size: 0.78rem;
  scrollbar-width: thin;
  scrollbar-color: #ff9f00 rgba(255, 255, 255, 0.05);
}

.pipe-log::-webkit-scrollbar {
  width: 6px;
}

.pipe-log::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
}

.pipe-log::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, #ff9f00, #ff6b6b);
  border-radius: 3px;
}

.pipe-log-entry {
  padding: 2px 0;
  color: #999;
}

.pipe-log-entry.ingest { color: #64b5f6; }
.pipe-log-entry.clean { color: #ffd700; }
.pipe-log-entry.transform { color: #ff9f00; }
.pipe-log-entry.validate { color: #ce93d8; }
.pipe-log-entry.load { color: #4caf50; }
.pipe-log-entry.error { color: #ff6b6b; }
.pipe-log-entry .pipe-log-time {
  color: #555;
  margin-right: 8px;
}

/* ===== LIGHT MODE ===== */
body.light-mode .analytics-tabs {
  background: rgba(255, 255, 255, 0.9);
  border-color: #eee;
}

body.light-mode .tab-btn {
  background: rgba(0, 0, 0, 0.03);
  border-color: #ddd;
  color: #777;
}

body.light-mode .tab-btn:hover {
  color: #ff9f00;
  background: rgba(255, 159, 0, 0.06);
}

body.light-mode .tab-btn.active {
  color: #333;
  background: rgba(255, 159, 0, 0.12);
  border-color: rgba(255, 159, 0, 0.3);
}

body.light-mode .metric-card {
  background: #fff;
  border-color: #eee;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

body.light-mode .metric-label {
  color: #444;
}

body.light-mode .metric-context {
  color: #999;
}

body.light-mode .chart-card {
  background: #fff;
  border-color: #eee;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

body.light-mode .powerbi-frame {
  background: #fff;
  border-color: #eee;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

body.light-mode .powerbi-placeholder {
  color: #666;
}

body.light-mode .ml-input-panel,
body.light-mode .ml-output-panel {
  background: #fff;
  border-color: #eee;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

body.light-mode .ml-field label {
  color: #666;
}

body.light-mode .ml-field select {
  background: #f5f5f5;
  border-color: #ddd;
  color: #333;
}

body.light-mode .ml-field select option {
  background: #fff;
  color: #333;
}

body.light-mode .ml-factors-table td {
  color: #555;
}

body.light-mode .story-chapter {
  background: #fff;
  border-color: #eee;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

body.light-mode .story-chapter p {
  color: #555;
}

body.light-mode .terminal-body {
  background: #1a1a2e;
}

body.light-mode .sql-terminal {
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}

body.light-mode .section-subtitle {
  color: #777;
}

body.light-mode .feature-container {
  background: #fff;
  border-color: #eee;
  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
}

body.light-mode .feature-btn {
  background: rgba(255, 159, 0, 0.06);
  border-color: rgba(255, 159, 0, 0.2);
}

body.light-mode .cm-metric,
body.light-mode .abtest-stat,
body.light-mode .mc-stat,
body.light-mode .bias-metric-card,
body.light-mode .bias-chart-card,
body.light-mode .abtest-group,
body.light-mode .ts-chart-card {
  background: #f9f9f9;
  border-color: #eee;
}

body.light-mode .cm-metric-lbl,
body.light-mode .abtest-stat-lbl,
body.light-mode .mc-stat-lbl {
  color: #777;
}

body.light-mode .cm-matrix-wrap h4,
body.light-mode .cm-roc-wrap h4,
body.light-mode .dtree-data-wrap h4,
body.light-mode .dtree-tree-wrap h4,
body.light-mode .bias-chart-card h4,
body.light-mode .ts-chart-card h4,
body.light-mode .bayes-group h4 {
  color: #555;
}

body.light-mode .threshold-control label,
body.light-mode .kmeans-k-select label,
body.light-mode .ts-slider label,
body.light-mode .bias-scenario-select label {
  color: #555;
}

body.light-mode .kmeans-canvas-wrap,
body.light-mode .mc-canvas-wrap,
body.light-mode .bayes-canvas-wrap {
  background: #f5f5f5;
  border-color: #eee;
}

body.light-mode .dtree-tree {
  background: #f9f9f9;
  border-color: #eee;
}

body.light-mode .dtree-dataset td {
  color: #555;
}

body.light-mode .dtree-prompt,
body.light-mode .kmeans-status {
  color: #999;
}

body.light-mode .cm-labels-left span,
body.light-mode .cm-header-row span {
  color: #777;
}

body.light-mode .abtest-field input,
body.light-mode .mc-field input,
body.light-mode .bayes-field input,
body.light-mode .bias-scenario-select select {
  background: #f5f5f5;
  border-color: #ddd;
  color: #333;
}

body.light-mode .bayes-params {
  background: rgba(255, 159, 0, 0.06);
  color: #555;
}

body.light-mode .dtree-node {
  background: rgba(255, 159, 0, 0.04);
}

body.light-mode .dtree-node-info {
  color: #777;
}

body.light-mode .kmeans-k-btn {
  background: #f0f0f0;
  border-color: #ddd;
  color: #666;
}

body.light-mode .nn-field select,
body.light-mode .gd-field select,
body.light-mode .corr-dataset-select select,
body.light-mode .pipe-speed-wrap select {
  background: #f5f5f5;
  border-color: #ddd;
  color: #333;
}

body.light-mode .nn-field select option,
body.light-mode .gd-field select option,
body.light-mode .corr-dataset-select select option,
body.light-mode .pipe-speed-wrap select option {
  background: #fff;
  color: #333;
}

body.light-mode .nn-canvas-wrap,
body.light-mode .gd-canvas-wrap,
body.light-mode .reg-canvas-wrap,
body.light-mode .corr-heatmap-wrap {
  background: #f5f5f5;
  border-color: #eee;
}

body.light-mode .nn-arch-wrap,
body.light-mode .corr-scatter-wrap,
body.light-mode .sent-stat,
body.light-mode .pipe-stat {
  background: #f9f9f9;
  border-color: #eee;
}

body.light-mode .nn-arch-wrap h4,
body.light-mode .corr-scatter-wrap h4,
body.light-mode .sent-breakdown h4,
body.light-mode .pipe-log-wrap h4 {
  color: #555;
}

body.light-mode .sent-textarea {
  background: #f5f5f5;
  border-color: #ddd;
  color: #333;
}

body.light-mode .sent-textarea::placeholder {
  color: #999;
}

body.light-mode .pipe-flow {
  background: #f5f5f5;
  border-color: #eee;
}

body.light-mode .pipe-stage {
  background: #fff;
  border-color: #ddd;
}

body.light-mode .pipe-stage-name {
  color: #555;
}

body.light-mode .pipe-log {
  background: #f0f0f0;
}

body.light-mode .reg-type-btn {
  background: #f0f0f0;
  border-color: #ddd;
  color: #666;
}

body.light-mode .nn-field label,
body.light-mode .gd-field label,
body.light-mode .reg-type-select label,
body.light-mode .corr-dataset-select label,
body.light-mode .pipe-speed-wrap label {
  color: #555;
}

body.light-mode .nn-metrics,
body.light-mode .gd-metrics,
body.light-mode .reg-stats {
  color: #666;
}

/* ===== DATA LANDSCAPE PARALLAX HERO ===== */
/* ===== NEURAL DATA FLOW HERO ===== */
.hero-canvas-section {
  position: relative;
  height: 100vh;
  overflow: hidden;
  z-index: 1;
  background: #060a14;
}

#hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-content-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 0 2rem 18vh;
  pointer-events: none;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  border-radius: 30px;
  border: 1px solid rgba(255, 159, 0, 0.25);
  background: rgba(255, 159, 0, 0.06);
  color: #ff9f00;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 1.5rem;
  backdrop-filter: blur(8px);
  animation: badgeFadeIn 1.2s ease-out 0.3s both;
}

@keyframes badgeFadeIn {
  from { opacity: 0; transform: translateY(-12px); }
  to { opacity: 1; transform: translateY(0); }
}

.hero-title {
  font-size: clamp(3rem, 7vw, 5.5rem);
  font-weight: 900;
  line-height: 1.05;
  margin: 0 0 1.2rem;
  background: linear-gradient(135deg, #fff 0%, #ffc040 35%, #ff9f00 55%, #ff6b6b 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: heroTitleShimmer 6s ease-in-out infinite, heroTitleIn 1s ease-out 0.5s both;
  filter: drop-shadow(0 0 60px rgba(255, 159, 0, 0.3)) drop-shadow(0 0 120px rgba(255, 100, 50, 0.15));
}

@keyframes heroTitleShimmer {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

@keyframes heroTitleIn {
  from { opacity: 0; transform: translateY(20px) scale(0.96); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

.hero-typed-line {
  color: #bbb;
  font-size: clamp(1rem, 2.2vw, 1.35rem);
  margin: 0 0 0.5rem;
  line-height: 1.6;
  font-weight: 400;
  animation: heroSubIn 1s ease-out 0.8s both;
}

@keyframes heroSubIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

.typed-prefix {
  color: #999;
}

.typed-text {
  color: #ff9f00;
  font-weight: 600;
}

.typed-cursor {
  color: #ff9f00;
  animation: cursorBlink 0.7s step-end infinite;
  font-weight: 300;
}

@keyframes cursorBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero-scroll-cue {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  animation: heroSubIn 1s ease-out 1.2s both;
}

.hero-scroll-cue span {
  color: #666;
  font-size: 0.8rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(180deg, #ff9f00, transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: scaleY(1); }
  50% { opacity: 0.3; transform: scaleY(0.6); transform-origin: top; }
}

/* ===== LIGHT MODE - HERO ===== */
body.light-mode .hero-canvas-section {
  background: #f0f4fa;
}

body.light-mode .hero-badge {
  background: rgba(255, 159, 0, 0.1);
  border-color: rgba(255, 159, 0, 0.3);
}

body.light-mode .hero-typed-line {
  color: #555;
}

body.light-mode .typed-prefix {
  color: #777;
}

body.light-mode .hero-scroll-cue span {
  color: #999;
}

/* ===== RESPONSIVE: 968px ===== */
@media (max-width: 968px) {
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .ml-demo-container {
    grid-template-columns: 1fr;
  }

  .cm-visuals {
    grid-template-columns: 1fr;
  }

  .cm-metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .dtree-layout {
    grid-template-columns: 1fr;
  }

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

  .bias-chart-row {
    grid-template-columns: 1fr;
  }

  .abtest-inputs {
    flex-direction: column;
  }

  .abtest-vs {
    justify-content: center;
    padding: 0;
  }

  .abtest-stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .mc-inputs {
    grid-template-columns: repeat(2, 1fr);
  }

  .mc-results {
    grid-template-columns: repeat(2, 1fr);
  }

  .bayes-controls {
    grid-template-columns: 1fr;
  }

  .nn-config-group {
    grid-template-columns: repeat(2, 1fr);
  }

  .nn-visuals {
    grid-template-columns: 1fr;
  }

  .corr-visuals {
    grid-template-columns: 1fr;
  }

  .gd-controls {
    flex-direction: column;
    align-items: stretch;
  }

  .gd-metrics {
    margin-left: 0;
  }

  .reg-stats {
    margin-left: 0;
    width: 100%;
  }

  .pipe-stats {
    grid-template-columns: repeat(3, 1fr);
  }

  .pipe-flow {
    flex-wrap: wrap;
    gap: 0.5rem;
  }

  .pipe-arrow {
    display: none;
  }

  .pipe-stage {
    flex: 1;
    min-width: 80px;
  }

  .hero-title {
    font-size: clamp(2.2rem, 5vw, 3.5rem);
  }
}

/* ===== RESPONSIVE: 768px ===== */
@media (max-width: 768px) {
  .analytics-hero,
  .analytics-charts,
  .analytics-powerbi,
  .analytics-ml,
  .analytics-story,
  .analytics-sql,
  .feature-section {
    padding: 2rem 1rem;
  }

  .analytics-hero h2,
  .analytics-charts h2,
  .analytics-powerbi h2,
  .analytics-ml h2,
  .analytics-story h2,
  .analytics-sql h2,
  .feature-section h2 {
    font-size: 1.7rem;
  }

  .metric-number {
    font-size: 2.2rem;
  }

  .story-steps {
    font-size: 0.65rem;
  }

  .ml-price-value {
    font-size: 2.2rem;
  }

  .analytics-tabs {
    justify-content: flex-start;
    padding: 0.75rem 1rem;
    gap: 0.4rem;
  }

  .tab-btn {
    padding: 8px 16px;
    font-size: 0.82rem;
  }

  .feature-container {
    padding: 1.5rem;
  }

  .mc-inputs {
    grid-template-columns: 1fr;
  }

  .mc-results {
    grid-template-columns: 1fr;
  }

  .nn-config-group {
    grid-template-columns: 1fr;
  }

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

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

  .corr-controls {
    flex-direction: column;
    align-items: flex-start;
  }

  .reg-controls {
    flex-direction: column;
    align-items: flex-start;
  }

  .reg-stats {
    margin-left: 0;
  }

  .hero-canvas-section {
    height: 90vh;
  }
}

/* ===== RESPONSIVE: 480px ===== */
@media (max-width: 480px) {
  .metrics-grid {
    grid-template-columns: 1fr;
  }

  .metric-card {
    padding: 1.5rem 1rem;
  }

  .metric-number {
    font-size: 2rem;
  }

  .powerbi-links {
    flex-direction: column;
    align-items: center;
  }

  .story-step {
    font-size: 0.6rem;
  }

  .terminal-body {
    font-size: 0.78rem;
    padding: 1rem;
  }

  .sql-chips {
    gap: 0.4rem;
  }

  .sql-chip {
    padding: 6px 12px;
    font-size: 0.75rem;
  }

  .analytics-hero h2,
  .analytics-charts h2,
  .analytics-powerbi h2,
  .analytics-ml h2,
  .analytics-story h2,
  .analytics-sql h2,
  .feature-section h2 {
    font-size: 1.5rem;
  }

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

  .cm-cell {
    width: 65px;
    height: 65px;
    font-size: 0.75rem;
  }

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

  .tab-btn {
    padding: 8px 14px;
    font-size: 0.78rem;
  }

  .tab-btn i {
    display: none;
  }

  .hero-canvas-section {
    height: 80vh;
  }

  .hero-scroll-cue span {
    display: none;
  }
}