/* ==========================================================================
   DataScope — Premium Windows 10 Fluent Design Homepage Stylesheet
   Sharp 0px geometry, rich Fluent color palette, generous negative space.
   ========================================================================== */

/* Strict 0px Border-Radius across all landing elements */
.landing-shell, .landing-shell * {
  box-sizing: border-box;
  border-radius: 0 !important;
}

:root, [data-theme="dark"] {
  color-scheme: dark;
  --lp-bg: #0d1117;
  --lp-bg-subtle: #131922;
  --lp-bg-card: #18202c;
  --lp-bg-card-hover: #1f2937;
  --lp-border: rgba(255, 255, 255, 0.12);
  --lp-border-hover: rgba(255, 255, 255, 0.28);
  --lp-border-accent: rgba(0, 188, 242, 0.4);
  --lp-text: #f0f6fc;
  --lp-text-secondary: #9aa5b5;
  --lp-text-muted: #6b7787;
  --lp-nav-bg: rgba(13, 17, 23, 0.82);
  
  /* Rich Microsoft Fluent Palette */
  --ms-blue: #0078d7;
  --ms-cyan: #00bcf2;
  --ms-teal: #00b7c3;
  --ms-purple: #8661c5;
  --ms-green: #16c60c;
  --ms-amber: #ff8c00;
  --ms-gold: #ffb900;
  --ms-crimson: #e81123;
  
  --lp-glow-blue: rgba(0, 120, 215, 0.18);
  --lp-glow-cyan: rgba(0, 188, 242, 0.2);
  --lp-glow-purple: rgba(134, 97, 197, 0.18);
  --lp-table-bg: #111722;
  --lp-table-stripe: #151e2b;
}

[data-theme="light"] {
  color-scheme: light;
  --lp-bg: #f8fafd;
  --lp-bg-subtle: #eef3f8;
  --lp-bg-card: #ffffff;
  --lp-bg-card-hover: #f1f5f9;
  --lp-border: #d2dae5;
  --lp-border-hover: #0078d7;
  --lp-border-accent: rgba(0, 120, 215, 0.4);
  --lp-text: #1a202c;
  --lp-text-secondary: #4a5568;
  --lp-text-muted: #718096;
  --lp-nav-bg: rgba(248, 250, 253, 0.88);
  
  --lp-glow-blue: rgba(0, 120, 215, 0.1);
  --lp-glow-cyan: rgba(0, 188, 242, 0.1);
  --lp-glow-purple: rgba(134, 97, 197, 0.1);
  --lp-table-bg: #ffffff;
  --lp-table-stripe: #f6f8fa;
}

/* Base Body Styles for Landing Page */
body.landing-page-body {
  margin: 0;
  padding: 0;
  font-family: 'Segoe UI', -apple-system, BlinkMacSystemFont, Roboto, sans-serif;
  background-color: var(--lp-bg);
  color: var(--lp-text);
  line-height: 1.6;
  overflow-x: hidden;
  transition: background-color 0.2s ease, color 0.2s ease;
}

/* Segoe MDL2 Assets Iconography */
.mdl {
  font-family: 'Segoe MDL2 Assets', 'Segoe UI Symbol', sans-serif;
  font-style: normal;
  font-weight: normal;
  display: inline-block;
  line-height: 1;
  text-rendering: auto;
  -webkit-font-smoothing: antialiased;
}

/* General Layout Containers */
.landing-shell {
  width: 100%;
  min-height: 100vh;
  position: relative;
}

.landing-container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 28px;
}

.landing-container-wide {
  width: 100%;
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 28px;
}

/* ==========================================================================
   1. Fluent Navigation Bar (Fixed & Blurred)
   ========================================================================== */
.fluent-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: var(--lp-nav-bg);
  backdrop-filter: blur(20px) saturate(125%);
  -webkit-backdrop-filter: blur(20px) saturate(125%);
  border-bottom: 1px solid var(--lp-border);
  z-index: 1000;
  transition: all 0.2s ease;
}

.fluent-nav-inner {
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.fluent-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--lp-text);
}

.brand-icon-box {
  width: 32px;
  height: 32px;
  background: var(--ms-blue);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
}

.brand-text-group {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.brand-name {
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.3px;
}

.brand-badge {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--ms-cyan);
  background: rgba(0, 188, 242, 0.12);
  border: 1px solid rgba(0, 188, 242, 0.3);
  padding: 2px 6px;
}

/* Nav Storytelling Links */
.nav-links-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link-item a {
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  color: var(--lp-text-secondary);
  transition: color 0.15s ease;
  position: relative;
  padding: 6px 0;
}

.nav-link-item a:hover {
  color: var(--lp-text);
}

.nav-link-item a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--ms-cyan);
  transition: width 0.2s ease;
}

.nav-link-item a:hover::after {
  width: 100%;
}

/* Nav Actions Cluster */
.nav-actions-cluster {
  display: flex;
  align-items: center;
  gap: 14px;
}

.theme-toggle-btn {
  width: 36px;
  height: 36px;
  background: transparent;
  border: 1px solid var(--lp-border);
  color: var(--lp-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 16px;
  transition: all 0.15s ease;
}

.theme-toggle-btn:hover {
  background: var(--lp-bg-subtle);
  color: var(--lp-text);
  border-color: var(--lp-border-hover);
}

/* Windows 10 Flat Rectangular Buttons */
.win-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  padding: 9px 20px;
  transition: all 0.15s ease;
  user-select: none;
}

.win-btn.primary {
  background: var(--ms-blue);
  color: #ffffff;
  border-color: var(--ms-blue);
  box-shadow: 0 4px 14px rgba(0, 120, 215, 0.35);
}

.win-btn.primary:hover {
  background: #106ebe;
  border-color: #106ebe;
  box-shadow: 0 6px 20px rgba(0, 120, 215, 0.55);
  transform: translateY(-1px);
}

.win-btn.secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--lp-text);
  border-color: var(--lp-border);
}

.win-btn.secondary:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--ms-cyan);
  color: var(--ms-cyan);
  transform: translateY(-1px);
}

.win-btn.accent-teal {
  background: var(--ms-teal);
  color: #ffffff;
  border-color: var(--ms-teal);
}

.win-btn.accent-teal:hover {
  background: #008f99;
}

.win-btn.accent-purple {
  background: var(--ms-purple);
  color: #ffffff;
  border-color: var(--ms-purple);
}

.win-btn.accent-purple:hover {
  background: #6f4fa6;
}

/* ==========================================================================
   2. Hero Section (Spacious, Generous Negative Space, Living Visualization)
   ========================================================================== */
.hero-section {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding: 120px 0 60px;
  overflow: hidden;
}

.hero-glow-layer {
  position: absolute;
  top: 10%;
  left: 50%;
  transform: translateX(-50%);
  width: 1000px;
  height: 600px;
  background: radial-gradient(circle at 40% 40%, var(--lp-glow-blue) 0%, var(--lp-glow-cyan) 35%, var(--lp-glow-purple) 60%, transparent 75%);
  filter: blur(60px);
  pointer-events: none;
  z-index: 0;
  opacity: 0.85;
}

.hero-grid-split {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 56px;
  position: relative;
  z-index: 1;
}

.hero-text-col {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--ms-cyan);
  background: rgba(0, 188, 242, 0.1);
  border: 1px solid rgba(0, 188, 242, 0.35);
  padding: 5px 12px;
  margin-bottom: 24px;
}

.hero-eyebrow .pulse-dot {
  width: 8px;
  height: 8px;
  background: var(--ms-green);
  box-shadow: 0 0 10px var(--ms-green);
  animation: pulse-ring 2s infinite ease-in-out;
}

@keyframes pulse-ring {
  0% { transform: scale(0.9); opacity: 0.8; }
  50% { transform: scale(1.25); opacity: 1; }
  100% { transform: scale(0.9); opacity: 0.8; }
}

.hero-headline {
  font-size: 58px;
  line-height: 1.08;
  font-weight: 700;
  letter-spacing: -1.8px;
  margin: 0 0 22px;
  color: var(--lp-text);
}

.hero-headline-gradient {
  background: linear-gradient(135deg, var(--ms-cyan) 0%, var(--ms-blue) 50%, var(--ms-purple) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.hero-tagline {
  font-size: 20px;
  line-height: 1.6;
  color: var(--lp-text-secondary);
  margin: 0 0 36px;
  max-width: 580px;
}

.hero-actions-row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.hero-launch-btn {
  padding: 14px 34px !important;
  font-size: 16px !important;
}

.hero-explore-btn {
  padding: 14px 28px !important;
  font-size: 15px !important;
}

/* Micro Spec Strip below Hero Actions */
.hero-pills-row {
  display: flex;
  align-items: center;
  gap: 24px;
  flex-wrap: wrap;
}

.hero-pill-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--lp-text-muted);
}

.hero-pill-item .mdl {
  color: var(--ms-teal);
  font-size: 15px;
}

/* Hero Data Canvas / Showcase Art */
.hero-visual-card {
  background: var(--lp-bg-card);
  border: 1px solid var(--lp-border);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.55), 0 0 40px var(--lp-glow-blue);
  position: relative;
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
}

.hero-visual-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 32px 72px rgba(0, 0, 0, 0.65), 0 0 50px var(--lp-glow-cyan);
}

.visual-card-titlebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: rgba(0, 0, 0, 0.35);
  border-bottom: 1px solid var(--lp-border);
  font-size: 12px;
}

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

.titlebar-dot {
  width: 9px;
  height: 9px;
}

.titlebar-dot.red { background: var(--ms-crimson); }
.titlebar-dot.yellow { background: var(--ms-gold); }
.titlebar-dot.green { background: var(--ms-green); }

.titlebar-label {
  font-weight: 600;
  color: var(--lp-text-secondary);
}

.titlebar-tag {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.6px;
  color: var(--ms-cyan);
  background: rgba(0, 188, 242, 0.15);
  padding: 2px 6px;
}

.hero-canvas-wrap {
  position: relative;
  width: 100%;
  height: 320px;
  background: radial-gradient(circle at 50% 50%, rgba(0, 120, 215, 0.08), transparent 70%);
}

#hero-interactive-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.hero-card-kpi-footer {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  border-top: 1px solid var(--lp-border);
  background: rgba(0, 0, 0, 0.2);
}

.hero-kpi-block {
  padding: 14px 16px;
  border-right: 1px solid var(--lp-border);
  display: flex;
  flex-direction: column;
}

.hero-kpi-block:last-child {
  border-right: none;
}

.hero-kpi-val {
  font-size: 20px;
  font-weight: 700;
  color: var(--lp-text);
  font-feature-settings: "tnum";
}

.hero-kpi-lbl {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--lp-text-muted);
  margin-top: 2px;
}

/* ==========================================================================
   Section Headers & Shared Spacing
   ========================================================================== */
.landing-section {
  padding: 100px 0;
  position: relative;
}

.landing-section.subtle-bg {
  background-color: var(--lp-bg-subtle);
  border-top: 1px solid var(--lp-border);
  border-bottom: 1px solid var(--lp-border);
}

.section-head-center {
  text-align: center;
  max-width: 740px;
  margin: 0 auto 60px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  padding: 4px 12px;
  margin-bottom: 16px;
  border: 1px solid;
}

.section-tag.blue {
  color: var(--ms-cyan);
  background: rgba(0, 188, 242, 0.12);
  border-color: rgba(0, 188, 242, 0.35);
}

.section-tag.teal {
  color: var(--ms-teal);
  background: rgba(0, 183, 195, 0.12);
  border-color: rgba(0, 183, 195, 0.35);
}

.section-tag.purple {
  color: #b18eed;
  background: rgba(134, 97, 197, 0.15);
  border-color: rgba(134, 97, 197, 0.35);
}

.section-tag.green {
  color: var(--ms-green);
  background: rgba(22, 198, 12, 0.12);
  border-color: rgba(22, 198, 12, 0.35);
}

.section-tag.amber {
  color: var(--ms-gold);
  background: rgba(255, 185, 0, 0.12);
  border-color: rgba(255, 185, 0, 0.35);
}

.section-title {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.8px;
  margin: 0 0 16px;
  color: var(--lp-text);
  line-height: 1.15;
}

.section-subtitle {
  font-size: 17px;
  color: var(--lp-text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* ==========================================================================
   3. Section: Visual Analytics (Show Data, Not Just Paragraphs)
   ========================================================================== */
.analytics-console-frame {
  background: var(--lp-bg-card);
  border: 1px solid var(--lp-border);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.45);
}

.console-tab-selector {
  display: flex;
  background: rgba(0, 0, 0, 0.35);
  border-bottom: 1px solid var(--lp-border);
  overflow-x: auto;
}

.console-tab-btn {
  padding: 16px 24px;
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  color: var(--lp-text-secondary);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.15s ease;
}

.console-tab-btn:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--lp-text);
}

.console-tab-btn.active {
  color: var(--lp-text);
  background: rgba(255, 255, 255, 0.06);
  border-bottom-color: var(--ms-cyan);
}

.console-tab-btn .tab-badge {
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  letter-spacing: 0.5px;
}

.console-tab-btn.active .tab-badge {
  background: rgba(0, 188, 242, 0.25);
  color: var(--ms-cyan);
}

.analytics-tab-pane {
  display: none;
  padding: 36px 32px;
}

.analytics-tab-pane.active {
  display: block;
}

/* Distribution / Outlier Interactive Grid */
.analytics-two-col {
  display: grid;
  grid-template-columns: 1.35fr 0.85fr;
  gap: 36px;
  align-items: center;
}

.chart-visual-box {
  background: var(--lp-bg-subtle);
  border: 1px solid var(--lp-border);
  padding: 24px;
  position: relative;
  min-height: 320px;
}

.chart-canvas-container {
  width: 100%;
  height: 280px;
  position: relative;
}

.chart-canvas-container canvas {
  width: 100% !important;
  height: 100% !important;
  display: block;
}

.interactive-controls-panel {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.control-card {
  background: var(--lp-bg-subtle);
  border: 1px solid var(--lp-border);
  padding: 18px 20px;
}

.control-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.control-card-header strong {
  font-size: 14px;
  color: var(--lp-text);
}

.control-card-header .val-badge {
  font-size: 13px;
  font-weight: 700;
  color: var(--ms-cyan);
  font-feature-settings: "tnum";
}

.win-range-slider {
  width: 100%;
  height: 6px;
  background: var(--lp-border);
  outline: none;
  -webkit-appearance: none;
  cursor: pointer;
}

.win-range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 16px;
  height: 16px;
  background: var(--ms-blue);
  cursor: pointer;
  border: 2px solid #ffffff;
}

.analytics-metrics-stack {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}

.stack-metric-pill {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--lp-border);
  border-left: 3px solid var(--ms-blue);
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
}

.stack-metric-pill.cyan { border-left-color: var(--ms-cyan); }
.stack-metric-pill.teal { border-left-color: var(--ms-teal); }
.stack-metric-pill.purple { border-left-color: var(--ms-purple); }
.stack-metric-pill.green { border-left-color: var(--ms-green); }

.stack-metric-pill strong {
  font-size: 18px;
  color: var(--lp-text);
  font-feature-settings: "tnum";
}

.stack-metric-pill span {
  font-size: 10px;
  font-weight: 700;
  color: var(--lp-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.6px;
  margin-top: 2px;
}

/* Correlation Heatmap Grid */
.heatmap-interactive-wrap {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.heatmap-table {
  width: 100%;
  border-collapse: collapse;
  text-align: center;
}

.heatmap-table th {
  padding: 12px;
  font-size: 12px;
  font-weight: 600;
  color: var(--lp-text-secondary);
  border: 1px solid var(--lp-border);
  background: rgba(0, 0, 0, 0.2);
}

.heatmap-table td {
  padding: 16px;
  font-size: 13px;
  font-weight: 700;
  color: #ffffff;
  border: 1px solid var(--lp-border);
  font-feature-settings: "tnum";
  cursor: pointer;
  transition: transform 0.15s ease, filter 0.15s ease;
}

.heatmap-table td:hover {
  transform: scale(1.05);
  filter: brightness(1.2);
  z-index: 2;
  position: relative;
}

.heatmap-tooltip-bar {
  padding: 12px 16px;
  background: var(--lp-bg-subtle);
  border: 1px solid var(--lp-border);
  font-size: 13px;
  color: var(--lp-text-secondary);
  display: flex;
  align-items: center;
  gap: 10px;
}

.heatmap-tooltip-bar strong {
  color: var(--ms-cyan);
}

/* ==========================================================================
   4. Section: Data Cleaning Studio ("Before & After" Transformation)
   ========================================================================== */
.cleaning-showcase-split {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 40px;
  align-items: flex-start;
}

.cleaning-rules-selector {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.cleaning-rule-item {
  background: var(--lp-bg-card);
  border: 1px solid var(--lp-border);
  border-left: 4px solid var(--lp-border);
  padding: 18px 20px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.cleaning-rule-item:hover {
  border-color: var(--lp-border-hover);
  background: var(--lp-bg-card-hover);
}

.cleaning-rule-item.active {
  border-left-color: var(--ms-green);
  background: rgba(22, 198, 12, 0.05);
  border-color: rgba(22, 198, 12, 0.3);
}

.rule-check-box {
  width: 22px;
  height: 22px;
  border: 1px solid var(--lp-border);
  background: transparent;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  color: transparent;
  flex-shrink: 0;
  margin-top: 2px;
  transition: all 0.15s ease;
}

.cleaning-rule-item.active .rule-check-box {
  background: var(--ms-green);
  border-color: var(--ms-green);
  color: #ffffff;
}

.rule-text-content strong {
  display: block;
  font-size: 15px;
  color: var(--lp-text);
  margin-bottom: 4px;
}

.rule-text-content p {
  font-size: 13px;
  color: var(--lp-text-secondary);
  margin: 0;
  line-height: 1.45;
}

/* Interactive Split Data Table */
.cleaning-table-card {
  background: var(--lp-bg-card);
  border: 1px solid var(--lp-border);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.4);
}

.table-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  background: rgba(0, 0, 0, 0.35);
  border-bottom: 1px solid var(--lp-border);
}

.table-mode-toggle {
  display: flex;
  border: 1px solid var(--lp-border);
}

.mode-btn {
  padding: 6px 14px;
  background: transparent;
  border: none;
  color: var(--lp-text-secondary);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s ease;
}

.mode-btn.active {
  background: var(--ms-blue);
  color: #ffffff;
}

.table-card-body {
  overflow-x: auto;
}

.cleaning-data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.cleaning-data-table th {
  background: var(--lp-bg-subtle);
  padding: 12px 16px;
  text-align: left;
  font-weight: 600;
  color: var(--lp-text-secondary);
  border-bottom: 1px solid var(--lp-border);
}

.cleaning-data-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--lp-border);
  color: var(--lp-text);
  font-feature-settings: "tnum";
}

.cell-dirty {
  background: rgba(255, 140, 0, 0.15);
  color: #ffb900 !important;
  font-weight: 600;
}

.cell-error {
  background: rgba(232, 17, 35, 0.15);
  color: #ff6b77 !important;
  font-weight: 600;
}

.cell-clean {
  background: rgba(22, 198, 12, 0.12);
  color: #70df7b !important;
  font-weight: 600;
}

.table-status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 20px;
  background: rgba(0, 0, 0, 0.2);
  border-top: 1px solid var(--lp-border);
  font-size: 12px;
  color: var(--lp-text-muted);
}

/* ==========================================================================
   5. Section: Dataset Comparison & Schema Drift
   ========================================================================== */
.drift-showcase-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.drift-card {
  background: var(--lp-bg-card);
  border: 1px solid var(--lp-border);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  border-top: 4px solid;
  transition: all 0.2s ease;
}

.drift-card.blue { border-top-color: var(--ms-blue); }
.drift-card.cyan { border-top-color: var(--ms-cyan); }
.drift-card.purple { border-top-color: var(--ms-purple); }

.drift-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.4);
  border-color: var(--lp-border-hover);
}

.drift-card-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 20px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--lp-border);
}

.drift-card.blue .drift-card-icon { color: var(--ms-cyan); }
.drift-card.cyan .drift-card-icon { color: var(--ms-teal); }
.drift-card.purple .drift-card-icon { color: #b18eed; }

.drift-card h3 {
  font-size: 19px;
  font-weight: 700;
  margin: 0 0 10px;
  color: var(--lp-text);
}

.drift-card p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--lp-text-secondary);
  margin: 0 0 20px;
  flex: 1;
}

.drift-visual-preview {
  background: var(--lp-bg-subtle);
  border: 1px solid var(--lp-border);
  padding: 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.drift-diff-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 12px;
}

.drift-diff-pill {
  font-size: 10px;
  font-weight: 700;
  padding: 2px 6px;
  letter-spacing: 0.5px;
}

.drift-diff-pill.add { background: rgba(22, 198, 12, 0.2); color: var(--ms-green); }
.drift-diff-pill.drop { background: rgba(232, 17, 35, 0.2); color: var(--ms-crimson); }
.drift-diff-pill.shift { background: rgba(0, 188, 242, 0.2); color: var(--ms-cyan); }

/* ==========================================================================
   6. Section: Two-Tier Cloud Infrastructure & Continuous Delivery
   ========================================================================== */
.arch-card-wrapper {
  background: var(--lp-bg-card);
  border: 1px solid var(--lp-border);
  box-shadow: 0 20px 48px rgba(0, 0, 0, 0.45);
  padding: 44px 36px;
}

.arch-flow-diagram {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 44px;
  position: relative;
}

.arch-flow-box {
  flex: 1;
  background: var(--lp-bg-subtle);
  border: 1px solid var(--lp-border);
  padding: 24px 18px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  transition: all 0.2s ease;
}

.arch-flow-box:hover {
  border-color: var(--ms-cyan);
  background: rgba(0, 188, 242, 0.05);
  transform: translateY(-2px);
}

.arch-flow-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  margin-bottom: 12px;
  border: 1px solid;
}

.arch-flow-box.tier-client .arch-flow-icon {
  background: rgba(0, 120, 215, 0.15);
  border-color: rgba(0, 120, 215, 0.4);
  color: var(--ms-cyan);
}

.arch-flow-box.tier-nginx .arch-flow-icon {
  background: rgba(0, 183, 195, 0.15);
  border-color: rgba(0, 183, 195, 0.4);
  color: var(--ms-teal);
}

.arch-flow-box.tier-app .arch-flow-icon {
  background: rgba(22, 198, 12, 0.15);
  border-color: rgba(22, 198, 12, 0.4);
  color: var(--ms-green);
}

.arch-flow-box.tier-storage .arch-flow-icon {
  background: rgba(134, 97, 197, 0.15);
  border-color: rgba(134, 97, 197, 0.4);
  color: #b18eed;
}

.arch-flow-box strong {
  font-size: 15px;
  color: var(--lp-text);
  margin-bottom: 4px;
}

.arch-flow-box span {
  font-size: 12px;
  color: var(--lp-text-muted);
}

.arch-arrow-divider {
  font-size: 22px;
  color: var(--lp-border-hover);
  flex-shrink: 0;
}

/* DevOps Pipeline Strip */
.pipeline-track-strip {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--lp-border);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}

.track-step {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--lp-text-secondary);
}

.track-step-num {
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--ms-blue);
  color: #ffffff;
  font-size: 11px;
  font-weight: 700;
}

.track-arrow {
  color: var(--lp-text-muted);
  font-size: 14px;
}

/* ==========================================================================
   7. Section: Final High-Impact CTA & Quick Launch Datasets
   ========================================================================== */
.final-cta-section {
  padding: 120px 0 100px;
  background: radial-gradient(circle at 50% 30%, var(--lp-glow-blue) 0%, transparent 65%);
  text-align: center;
}

.cta-box-inner {
  max-width: 860px;
  margin: 0 auto;
}

.cta-headline {
  font-size: 46px;
  font-weight: 700;
  letter-spacing: -1.2px;
  margin: 0 0 18px;
  color: var(--lp-text);
}

.cta-subtext {
  font-size: 18px;
  color: var(--lp-text-secondary);
  line-height: 1.6;
  margin: 0 auto 36px;
  max-width: 620px;
}

.cta-main-btn {
  padding: 16px 42px !important;
  font-size: 17px !important;
  margin-bottom: 48px;
}

/* Sample Quick-Launch Cartridges */
.quick-samples-wrapper {
  margin-top: 40px;
  padding-top: 36px;
  border-top: 1px solid var(--lp-border);
  text-align: left;
}

.quick-samples-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--lp-text-muted);
  margin-bottom: 16px;
}

.quick-cartridges-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.cartridge-card {
  background: var(--lp-bg-card);
  border: 1px solid var(--lp-border);
  border-top: 3px solid;
  padding: 18px 16px;
  text-decoration: none;
  display: flex;
  flex-direction: column;
  transition: all 0.15s ease;
}

.cartridge-card:hover {
  transform: translateY(-2px);
  background: var(--lp-bg-card-hover);
  border-color: var(--lp-border-hover);
}

.cartridge-card.ufo { border-top-color: var(--ms-purple); }
.cartridge-card.auto { border-top-color: var(--ms-blue); }
.cartridge-card.risk { border-top-color: var(--ms-gold); }
.cartridge-card.churn { border-top-color: var(--ms-green); }

.cartridge-badge {
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.8px;
  padding: 2px 6px;
  align-self: flex-start;
  margin-bottom: 8px;
}

.cartridge-card.ufo .cartridge-badge { background: rgba(134, 97, 197, 0.2); color: #b18eed; }
.cartridge-card.auto .cartridge-badge { background: rgba(0, 120, 215, 0.2); color: var(--ms-cyan); }
.cartridge-card.risk .cartridge-badge { background: rgba(255, 185, 0, 0.2); color: var(--ms-gold); }
.cartridge-card.churn .cartridge-badge { background: rgba(22, 198, 12, 0.2); color: var(--ms-green); }

.cartridge-card strong {
  font-size: 14px;
  color: var(--lp-text);
  margin-bottom: 4px;
}

.cartridge-card span {
  font-size: 11px;
  color: var(--lp-text-muted);
}

/* ==========================================================================
   8. Footer
   ========================================================================== */
.fluent-footer {
  background: var(--lp-bg-subtle);
  border-top: 1px solid var(--lp-border);
  padding: 60px 0 40px;
  font-size: 13px;
  color: var(--lp-text-secondary);
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-col h4 {
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  color: var(--lp-text);
  margin: 0 0 16px;
}

.footer-links-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links-list a {
  color: var(--lp-text-secondary);
  text-decoration: none;
  transition: color 0.15s ease;
}

.footer-links-list a:hover {
  color: var(--ms-cyan);
}

.footer-bottom-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 28px;
  border-top: 1px solid var(--lp-border);
  font-size: 12px;
  color: var(--lp-text-muted);
}

/* ==========================================================================
   9. Windows 10 Fluent Motion, Transitions & Reveal System
   ========================================================================== */
/* Restrained 8px entrance with authentic Windows 10 deceleration */
.reveal-on-scroll {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.24s cubic-bezier(0.1, 0.9, 0.2, 1), transform 0.24s cubic-bezier(0.1, 0.9, 0.2, 1);
}

.reveal-on-scroll.is-revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered micro-delays for visual rhythm */
.hero-pills-row .hero-pill-item:nth-child(1) { transition-delay: 0.04s; }
.hero-pills-row .hero-pill-item:nth-child(2) { transition-delay: 0.08s; }
.hero-pills-row .hero-pill-item:nth-child(3) { transition-delay: 0.12s; }

/* --------------------------------------------------------------------------
   Reveal Highlight (Pointer Spotlight & Proximity Glow)
   -------------------------------------------------------------------------- */
.win-btn, .hero-pill-item, .console-tab-btn, .cleaning-rule-item,
.arch-flow-box, .hero-visual-card, .chart-visual-box, .cleaning-table-card {
  position: relative;
  overflow: hidden;
}

.win-btn::before, .hero-pill-item::before, .console-tab-btn::before,
.cleaning-rule-item::before, .arch-flow-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle 95px at var(--reveal-x, -300px) var(--reveal-y, -300px), rgba(255, 255, 255, 0.12), transparent 75%);
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.16s ease-out;
  z-index: 1;
}

[data-theme="light"] .win-btn::before,
[data-theme="light"] .hero-pill-item::before,
[data-theme="light"] .console-tab-btn::before,
[data-theme="light"] .cleaning-rule-item::before,
[data-theme="light"] .arch-flow-box::before {
  background: radial-gradient(circle 95px at var(--reveal-x, -300px) var(--reveal-y, -300px), rgba(0, 120, 215, 0.10), transparent 75%);
}

.has-reveal::before {
  opacity: 1 !important;
}

.has-reveal-border {
  border-color: rgba(0, 188, 242, 0.5) !important;
  transition: border-color 0.14s ease-out;
}

[data-theme="light"] .has-reveal-border {
  border-color: rgba(0, 120, 215, 0.5) !important;
}

/* --------------------------------------------------------------------------
   Interactive Buttons (Tactile Pressed Feedback & Smooth Transitions)
   -------------------------------------------------------------------------- */
.win-btn {
  transition: background-color 0.14s ease-out,
              border-color 0.14s ease-out,
              color 0.14s ease-out,
              box-shadow 0.14s ease-out,
              transform 0.08s cubic-bezier(0.1, 0.9, 0.2, 1);
}

.win-btn:active {
  transform: scale(0.98) !important;
  transition: transform 0.08s cubic-bezier(0.1, 0.9, 0.2, 1) !important;
}

.win-btn:focus-visible {
  outline: 2px solid var(--ms-blue);
  outline-offset: 1px;
}

/* --------------------------------------------------------------------------
   Console Tabs & Pane Transitions
   -------------------------------------------------------------------------- */
.console-tab-btn {
  position: relative;
  transition: background-color 0.14s ease-out,
              color 0.14s ease-out,
              border-color 0.14s ease-out;
}

.console-tab-btn::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--ms-cyan);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform 0.16s cubic-bezier(0.1, 0.9, 0.2, 1);
}

.console-tab-btn.active::after {
  transform: scaleX(1);
}

@keyframes winTabFade {
  from {
    opacity: 0;
    transform: translateY(4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.analytics-tab-pane.active {
  animation: winTabFade 0.18s cubic-bezier(0.1, 0.9, 0.2, 1) both;
}

/* --------------------------------------------------------------------------
   Data Cleaning Studio Row Transitions
   -------------------------------------------------------------------------- */
@keyframes winRowFade {
  from {
    opacity: 0;
    transform: translateY(3px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.cleaning-demo-table tbody tr {
  animation: winRowFade 0.16s cubic-bezier(0.1, 0.9, 0.2, 1) both;
}

.cleaning-demo-table tbody tr:nth-child(1) { animation-delay: 0.02s; }
.cleaning-demo-table tbody tr:nth-child(2) { animation-delay: 0.04s; }
.cleaning-demo-table tbody tr:nth-child(3) { animation-delay: 0.06s; }
.cleaning-demo-table tbody tr:nth-child(4) { animation-delay: 0.08s; }

/* --------------------------------------------------------------------------
   prefers-reduced-motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    transform: none !important;
  }
  .reveal-on-scroll {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* ==========================================================================
   10. Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1080px) {
  .hero-grid-split {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  .hero-headline {
    font-size: 46px;
  }
  .analytics-two-col {
    grid-template-columns: 1fr;
  }
  .cleaning-showcase-split {
    grid-template-columns: 1fr;
  }
  .drift-showcase-grid {
    grid-template-columns: 1fr;
  }
  .quick-cartridges-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .footer-top-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links-menu {
    display: none;
  }
  .hero-headline {
    font-size: 36px;
  }
  .hero-tagline {
    font-size: 17px;
  }
  .section-title {
    font-size: 30px;
  }
  .arch-flow-diagram {
    flex-direction: column;
    gap: 20px;
  }
  .arch-arrow-divider {
    transform: rotate(90deg);
  }
  .pipeline-track-strip {
    flex-direction: column;
    align-items: flex-start;
  }
  .track-arrow {
    display: none;
  }
  .quick-cartridges-grid {
    grid-template-columns: 1fr;
  }
  .footer-top-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom-row {
    flex-direction: column;
    gap: 12px;
    align-items: flex-start;
  }
}