/* ==========================================================================
   AKS Constructure Design System & Stylesheet
   ========================================================================== */

/* Design Tokens */
:root {
  --color-bg: #f8fafc; /* Light slate/ice-blue background */
  --color-text: #0f172a; /* Slate 900 */
  --color-text-muted: #64748b; /* Slate 500 */
  --color-primary: #06b6d4; /* Electric Cyan */
  --color-primary-light: #22d3ee;
  --color-primary-glow: rgba(6, 182, 212, 0.35);
  --color-secondary: #4f46e5; /* Deep Indigo */
  --color-accent: #f59e0b; /* Amber */
  --color-accent-light: #fbbf24;
  --color-surface: #ffffff;
  --color-surface-hover: #f1f5f9;
  --color-border: #e2e8f0; /* Slate 200 */
  
  /* Dark Tech Accents (Obsidian Navy) */
  --color-dark-panel: #0f172a; /* Slate 900 */
  --color-dark-surface: #1e293b; /* Slate 800 */
  --color-dark-border: #334155; /* Slate 700 */
  --color-dark-text: #f8fafc;
  --color-dark-text-muted: #94a3b8;
  
  --font-heading: 'Plus Jakarta Sans', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  --font-body: 'Inter', 'Helvetica Neue', Helvetica, Arial, sans-serif;
  
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  
  --container-width: 1200px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
  
  /* Minimalist Tech Grid Overlay */
  background-image: 
    linear-gradient(to right, rgba(15, 23, 42, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(15, 23, 42, 0.03) 1px, transparent 1px);
  background-size: 50px 50px;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-fast);
}

ul {
  list-style: none;
}

/* Canvas background */
#hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 900px;
  z-index: -1;
  pointer-events: none;
  opacity: 0.85;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 28px;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-normal);
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-secondary) 0%, #312e81 100%);
  color: white;
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(79, 70, 229, 0.4), 0 0 0 3px rgba(79, 70, 229, 0.15);
}

.btn-secondary {
  background: var(--color-surface);
  color: var(--color-text);
  border-color: var(--color-border);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
}

.btn-secondary:hover {
  background: var(--color-surface-hover);
  border-color: var(--color-text-muted);
  transform: translateY(-2px);
}

.btn-block {
  display: flex;
  width: 100%;
}

/* Header & Navbar */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(15, 23, 42, 0.95); /* Deep dark background for header contrast */
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-dark-border);
  color: var(--color-dark-text);
}

.navbar {
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
  letter-spacing: 0.05em;
  gap: 10px;
  color: var(--color-dark-text);
}

.logo span {
  color: var(--color-primary);
}

.logo-icon {
  width: 32px;
  height: 32px;
}

.logo-border {
  animation: logo-rotate 10s linear infinite;
  transform-origin: center;
}

@keyframes logo-rotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.logo-dot {
  animation: logo-pulse 2s infinite alternate;
}

@keyframes logo-pulse {
  0% { transform: scale(0.8) translate(-10%, -10%); opacity: 0.6; }
  100% { transform: scale(1.2) translate(-10%, -10%); opacity: 1; }
}

.nav-links {
  display: flex;
  gap: 32px;
}

.nav-links a {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-dark-text-muted);
  position: relative;
  padding: 6px 0;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-primary);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background-color: var(--color-primary);
  transition: var(--transition-fast);
}

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

.btn-nav-cta {
  background: var(--color-primary);
  color: var(--color-dark-panel);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  box-shadow: 0 4px 10px rgba(6, 182, 212, 0.3);
}

.btn-nav-cta:hover {
  background: var(--color-primary-light);
  transform: translateY(-1px);
  box-shadow: 0 6px 14px rgba(6, 182, 212, 0.45);
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
}

.mobile-menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: white;
  transition: var(--transition-fast);
}

/* Mobile Menu Drawer */
.mobile-menu-drawer {
  position: fixed;
  top: 80px;
  left: 0;
  width: 100%;
  height: 0;
  background-color: var(--color-dark-panel);
  z-index: 99;
  overflow: hidden;
  transition: var(--transition-normal);
  border-bottom: 0 solid var(--color-dark-border);
}

.mobile-menu-drawer.open {
  height: calc(100vh - 80px);
  border-bottom-width: 1px;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 30px;
  padding-top: 50px;
}

.mobile-nav-links a {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  color: var(--color-dark-text-muted);
}

.mobile-nav-links a:hover {
  color: var(--color-primary);
}

.btn-mobile-cta {
  background: var(--color-primary);
  color: var(--color-dark-panel) !important;
  font-weight: 600;
  padding: 10px 30px;
  border-radius: var(--radius-sm);
}

/* Hero Section */
.hero {
  position: relative;
  padding: 100px 0 80px;
  overflow: hidden;
}

.hero-content {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  align-items: center;
  gap: 60px;
}

.hero-text-block {
  max-width: 620px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: rgba(6, 182, 212, 0.08);
  border: 1px solid rgba(6, 182, 212, 0.2);
  color: var(--color-secondary);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 24px;
}

.status-indicator {
  display: block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-primary);
  animation: glow-blink 1.5s infinite alternate;
}

@keyframes glow-blink {
  0% { transform: scale(0.8); opacity: 0.5; box-shadow: 0 0 0 0 rgba(6, 182, 212, 0); }
  100% { transform: scale(1.2); opacity: 1; box-shadow: 0 0 8px 2px var(--color-primary-glow); }
}

#hero-title {
  font-size: 3.5rem;
  line-height: 1.1;
  color: var(--color-text);
  margin-bottom: 24px;
}

.gradient-text {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

#hero-desc {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 16px;
}

/* Hero Visual & Server Rack Illustration */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.isometric-structure {
  position: relative;
  width: 320px;
  height: 380px;
}

.grid-card {
  position: absolute;
  width: 100%;
  border-radius: var(--radius-md);
  padding: 20px;
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.08);
  border: 1px solid var(--color-border);
  transition: var(--transition-normal);
}

.server-rack {
  top: 20px;
  left: 0;
  background-color: var(--color-dark-panel);
  border-color: var(--color-dark-border);
  color: var(--color-dark-text);
  display: flex;
  flex-direction: column;
  gap: 12px;
  z-index: 2;
}

.rack-header {
  display: flex;
  align-items: center;
  gap: 8px;
  border-bottom: 1px solid var(--color-dark-border);
  padding-bottom: 10px;
}

.rack-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

.rack-dot.green {
  background-color: #10b981;
  box-shadow: 0 0 6px #10b981;
}

.rack-title {
  font-family: monospace;
  font-size: 0.7rem;
  color: var(--color-dark-text-muted);
}

.rack-unit {
  background: var(--color-dark-surface);
  border: 1px solid var(--color-dark-border);
  border-radius: var(--radius-sm);
  padding: 10px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.rack-unit.active {
  border-left: 3px solid var(--color-primary);
}

.unit-name {
  font-family: monospace;
  font-size: 0.75rem;
  color: var(--color-primary-light);
}

.leds {
  display: flex;
  gap: 4px;
}

.led {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #475569;
}

.led.active {
  background-color: var(--color-primary);
  box-shadow: 0 0 6px var(--color-primary);
}

.led.blink {
  background-color: var(--color-accent);
  box-shadow: 0 0 6px var(--color-accent);
  animation: led-flash 1s infinite alternate;
}

@keyframes led-flash {
  0% { opacity: 0.3; }
  100% { opacity: 1; }
}

.connection-lines {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.svg-wires {
  width: 100%;
  height: 100%;
}

.node-endpoints {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 3;
  pointer-events: none;
}

.endpoint {
  position: absolute;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: 8px 14px;
  border-radius: var(--radius-full);
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.endpoint::before {
  content: '';
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: var(--color-secondary);
  margin-right: 8px;
  vertical-align: middle;
}

.ep-1 { top: -20px; left: -40px; }
.ep-2 { top: 120px; right: -40px; }
.ep-3 { bottom: -20px; left: 60px; }

/* Stats Grid Section */
.stats-section {
  padding: 40px 0;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.stat-card {
  text-align: center;
  padding: 20px;
  position: relative;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--color-text);
  line-height: 1;
  margin-bottom: 8px;
}

.stat-label {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text-muted);
}

.stat-line {
  position: absolute;
  bottom: 0;
  left: 25%;
  width: 50%;
  height: 3px;
  background: linear-gradient(to right, var(--color-primary), var(--color-secondary));
  transform: scaleX(0.4);
  transition: var(--transition-normal);
}

.stat-card:hover .stat-line {
  transform: scaleX(1);
}

/* Core Capabilities Section */
.services-section {
  padding: 100px 0;
}

.section-header {
  max-width: 650px;
  margin-bottom: 60px;
}

.text-center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--color-secondary);
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: 2.5rem;
  color: var(--color-text);
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--color-text-muted);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.service-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 40px 30px;
  position: relative;
  overflow: hidden;
  transition: var(--transition-normal);
  box-shadow: 0 4px 20px rgba(15, 23, 42, 0.02);
}

.card-glow {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.06), 0 0 0 1px rgba(6, 182, 212, 0.1);
  border-color: rgba(6, 182, 212, 0.2);
}

.service-card:hover .card-glow {
  transform: scaleX(1);
}

.service-icon {
  width: 54px;
  height: 54px;
  background: rgba(79, 70, 229, 0.06);
  color: var(--color-secondary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 28px;
  transition: var(--transition-normal);
}

.service-icon svg {
  width: 26px;
  height: 26px;
}

.service-card:hover .service-icon {
  background: var(--color-secondary);
  color: white;
}

.service-card h3 {
  font-size: 1.4rem;
  margin-bottom: 16px;
  color: var(--color-text);
}

.service-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.service-bullets {
  border-top: 1px solid var(--color-border);
  padding-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.service-bullets li {
  font-size: 0.9rem;
  color: var(--color-text);
  padding-left: 20px;
  position: relative;
}

.service-bullets li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: 700;
}

/* Blueprint Studio Configurator */
.configurator-section {
  padding: 100px 0;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.config-container-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 50px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.02);
  background-color: var(--color-bg);
}

.config-header {
  max-width: 600px;
  margin-bottom: 40px;
}

.config-header h2 {
  font-size: 2.2rem;
  margin-bottom: 10px;
}

.config-header p {
  color: var(--color-text-muted);
}

.config-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
}

.config-inputs {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.config-group {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.group-title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}

.options-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.option-btn {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 14px 10px;
  cursor: pointer;
  text-align: left;
  transition: var(--transition-fast);
}

.option-btn:hover {
  border-color: var(--color-text-muted);
  background-color: var(--color-surface-hover);
}

.option-btn.active {
  border-color: var(--color-secondary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
  background: var(--color-surface);
}

.opt-title {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

.opt-desc {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  line-height: 1.3;
}

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

.check-item {
  position: relative;
}

.check-item input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

.check-item label {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 12px 14px;
  cursor: pointer;
  transition: var(--transition-fast);
}

.check-item label:hover {
  background-color: var(--color-surface-hover);
}

.custom-checkbox {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-fast);
  background-color: white;
}

.custom-checkbox::after {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 1px;
  background-color: var(--color-primary);
  transform: scale(0);
  transition: var(--transition-fast);
}

.check-item input[type="checkbox"]:checked + label .custom-checkbox {
  border-color: var(--color-primary);
}

.check-item input[type="checkbox"]:checked + label .custom-checkbox::after {
  transform: scale(1);
}

.check-item input[type="checkbox"]:checked + label {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.1);
}

.check-title {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-text);
  display: block;
}

.check-desc {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  display: block;
  margin-top: 2px;
}

/* Configurator Visualizer Panel (Dark Tech Console) */
.config-visualizer {
  background-color: var(--color-dark-panel);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-dark-border);
  color: var(--color-dark-text);
  padding: 30px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.15);
}

.visualizer-header {
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--color-dark-border);
  padding-bottom: 14px;
}

.visualizer-header h4 {
  font-family: monospace;
  font-size: 0.85rem;
  color: var(--color-dark-text-muted);
}

.pulse-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #10b981;
  box-shadow: 0 0 8px #10b981;
}

.topology-display {
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin: 20px 0;
}

.topology-canvas {
  height: 180px;
  border: 1px dashed var(--color-dark-border);
  border-radius: var(--radius-sm);
  background-color: rgba(15, 23, 42, 0.6);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.topology-status-msg {
  font-family: monospace;
  font-size: 0.75rem;
  color: var(--color-dark-text-muted);
  text-align: center;
  padding: 20px;
}

/* Canvas Topology Nodes styling */
.topo-node {
  position: absolute;
  background: var(--color-dark-surface);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  font-family: monospace;
  font-size: 0.7rem;
  color: var(--color-primary-light);
  box-shadow: 0 0 10px rgba(6, 182, 212, 0.2);
  animation: topo-node-spawn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

@keyframes topo-node-spawn {
  0% { transform: scale(0.6); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.topo-edge {
  position: absolute;
  height: 1px;
  background: linear-gradient(90deg, rgba(6, 182, 212, 0.5), rgba(79, 70, 229, 0.5));
  transform-origin: left center;
  z-index: 0;
}

.topology-summary {
  display: flex;
  flex-direction: column;
  gap: 10px;
  border-top: 1px solid var(--color-dark-border);
  padding-top: 20px;
}

.sum-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  padding-bottom: 8px;
}

.sum-label {
  color: var(--color-dark-text-muted);
}

.sum-val {
  font-weight: 600;
  text-align: right;
  max-width: 60%;
}

.text-accent {
  color: var(--color-accent-light) !important;
}

.visualizer-actions {
  margin-top: 10px;
}

.btn-block {
  width: 100%;
}

/* Coverage & Network Map Section */
.coverage-section {
  padding: 100px 0;
}

.coverage-grid {
  display: grid;
  grid-template-columns: 0.95fr 1.05fr;
  align-items: center;
  gap: 60px;
}

.coverage-text {
  max-width: 540px;
}

.coverage-text h2 {
  font-size: 2.4rem;
  margin-bottom: 20px;
}

.coverage-text p {
  color: var(--color-text-muted);
  margin-bottom: 40px;
}

.coverage-highlights {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.cov-item {
  display: flex;
  gap: 16px;
}

.cov-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  color: var(--color-secondary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.02);
}

.cov-icon svg {
  width: 20px;
  height: 20px;
}

.cov-item h4 {
  font-size: 1.1rem;
  margin-bottom: 4px;
}

.cov-item p {
  font-size: 0.88rem;
  color: var(--color-text-muted);
  margin: 0;
}

/* Map visualizer */
.coverage-map-panel {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.network-map-container {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: 0 10px 30px rgba(15, 23, 42, 0.02);
  position: relative;
}

.network-grid-svg {
  width: 100%;
  height: 100%;
  max-height: 380px;
}

.pulse-node {
  cursor: pointer;
  transition: var(--transition-fast);
}

.pulse-node:hover {
  fill: white;
  stroke: var(--color-primary);
  stroke-width: 4px;
}

.pulse-node.main-node {
  animation: pulse-main 2s infinite;
}

@keyframes pulse-main {
  0% { transform: scale(1); transform-origin: center; filter: drop-shadow(0 0 0 rgba(79, 70, 229, 0.4)); }
  70% { transform: scale(1.15); transform-origin: center; filter: drop-shadow(0 0 10px rgba(79, 70, 229, 0.7)); }
  100% { transform: scale(1); transform-origin: center; filter: drop-shadow(0 0 0 rgba(79, 70, 229, 0)); }
}

.transit-board {
  background: var(--color-dark-panel);
  border-radius: var(--radius-md);
  color: var(--color-dark-text);
  padding: 16px 20px;
  border: 1px solid var(--color-dark-border);
  animation: panel-glow 3s infinite alternate;
}

@keyframes panel-glow {
  0% { box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1); }
  100% { box-shadow: 0 4px 20px rgba(6, 182, 212, 0.1); border-color: rgba(6, 182, 212, 0.3); }
}

.board-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--color-dark-border);
  padding-bottom: 8px;
  margin-bottom: 10px;
}

.board-header h5 {
  font-family: monospace;
  font-size: 0.8rem;
  color: var(--color-dark-text-muted);
}

.board-hub {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-primary-light);
  background-color: var(--color-dark-surface);
  padding: 2px 8px;
  border-radius: var(--radius-sm);
}

.board-body {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 15px;
}

.board-stat {
  display: flex;
  flex-direction: column;
}

.stat-name {
  font-size: 0.7rem;
  color: var(--color-dark-text-muted);
}

.board-stat .stat-value {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  margin-top: 2px;
}

/* OEM Partners ecosystem */
.partners-section {
  padding: 100px 0;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

.oem-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 50px;
}

.oem-cat-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 24px 20px;
  transition: var(--transition-fast);
}

.oem-cat-card:hover {
  border-color: var(--color-text-muted);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.02);
}

.oem-cat-card h5 {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 10px;
  margin-bottom: 16px;
}

.oem-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.oem-badge {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  padding: 4px 0;
  transition: var(--transition-fast);
}

.oem-badge:hover {
  color: var(--color-primary);
  padding-left: 4px;
}

/* Stepper Consultation Form Section */
.consultation-section {
  padding: 100px 0;
}

.form-max-width {
  max-width: 800px;
}

.form-container {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 50px;
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.04);
  position: relative;
  overflow: hidden;
}

.form-header {
  text-align: center;
  max-width: 580px;
  margin: 0 auto 40px;
}

.form-header h2 {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

.form-header p {
  color: var(--color-text-muted);
}

.stepper-indicators {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 15px;
  margin-bottom: 40px;
}

.step-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--color-text-muted);
  opacity: 0.6;
  transition: var(--transition-normal);
}

.step-indicator.active {
  color: var(--color-secondary);
  opacity: 1;
}

.step-indicator.completed {
  color: #10b981;
  opacity: 1;
}

.step-num {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  border: 1px solid currentColor;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.8rem;
}

.step-indicator.completed .step-num {
  background-color: #10b981;
  color: white;
  border-color: #10b981;
}

.step-txt {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.88rem;
}

.step-line {
  width: 80px;
  height: 1px;
  background-color: var(--color-border);
}

.form-step {
  display: none;
}

.form-step.active {
  display: block;
  animation: step-fade 0.35s ease-out;
}

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

.form-grid-row {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-bottom: 20px;
}

.form-control {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}

.form-control label {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text);
}

.form-control input[type="text"],
.form-control input[type="email"],
.form-control input[type="tel"],
.form-control select,
.form-control textarea {
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background-color: var(--color-bg);
  outline: none;
  transition: var(--transition-fast);
  color: var(--color-text);
}

.form-control input:focus,
.form-control select:focus,
.form-control textarea:focus {
  border-color: var(--color-secondary);
  background-color: white;
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-control input.invalid,
.form-control select.invalid {
  border-color: #ef4444;
  background-color: #fef2f2;
}

.error-msg {
  display: none;
  font-size: 0.75rem;
  color: #ef4444;
  font-weight: 500;
}

.form-control input.invalid ~ .error-msg,
.form-control select.invalid ~ .error-msg {
  display: block;
}

.checkbox-container {
  display: flex;
  align-items: center;
  gap: 8px;
}

.checkbox-container input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--color-primary);
}

.checkbox-container label {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  font-weight: 400;
  cursor: pointer;
}

.form-actions-step {
  display: flex;
  justify-content: space-between;
  border-top: 1px solid var(--color-border);
  padding-top: 30px;
  margin-top: 10px;
}

/* Success Overlay */
.form-success-overlay {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: white;
  z-index: 10;
  align-items: center;
  justify-content: center;
  padding: 40px;
  text-align: center;
}

.form-success-overlay.active {
  display: flex;
  animation: overlay-fade 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes overlay-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

.success-content {
  max-width: 480px;
}

.success-icon {
  width: 64px;
  height: 64px;
  background-color: #ecfdf5;
  color: #10b981;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 24px;
}

.success-icon svg {
  width: 32px;
  height: 32px;
}

.success-content h3 {
  font-size: 1.8rem;
  margin-bottom: 12px;
  color: var(--color-text);
}

.success-content p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  margin-bottom: 30px;
}

/* Footer styling */
footer {
  background-color: var(--color-dark-panel);
  border-top: 1px solid var(--color-dark-border);
  color: var(--color-dark-text);
  padding: 80px 0 30px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 0.8fr 1.2fr;
  gap: 40px;
  border-bottom: 1px solid var(--color-dark-border);
  padding-bottom: 50px;
  margin-bottom: 30px;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--color-dark-text-muted);
  line-height: 1.6;
}

.footer-links h5,
.footer-contact h5 {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-dark-text-muted);
  margin-bottom: 24px;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-links a {
  font-size: 0.9rem;
  color: var(--color-dark-text-muted);
}

.footer-links a:hover {
  color: var(--color-primary-light);
  padding-left: 4px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-details p {
  font-size: 0.9rem;
  color: var(--color-dark-text-muted);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--color-dark-text-muted);
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  h1 { font-size: 2.8rem; }
  .hero-content {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .hero-visual {
    order: -1;
    margin-bottom: 20px;
  }
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .config-grid {
    grid-template-columns: 1fr;
  }
  .coverage-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .desktop-nav {
    display: none;
  }
  .mobile-menu-toggle {
    display: flex;
  }
  .mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  .mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  .mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .services-grid {
    grid-template-columns: 1fr;
  }
  .oem-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .form-grid-row {
    grid-template-columns: 1fr;
  }
  .config-container-card {
    padding: 30px;
  }
  .options-grid {
    grid-template-columns: 1fr;
  }
  .checkbox-grid {
    grid-template-columns: 1fr;
  }
  .form-container {
    padding: 30px;
  }
}

@media (max-width: 480px) {
  h1 { font-size: 2.2rem; }
  .oem-grid {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr;
  }
}