/* ====================================================================
   CableHunt Networks Limited - Master Design System
   Corporate British English Edition (en-GB)
   Brand Colours: #F7941D (Amber Orange), #414042 (Charcoal), #23396C (Corporate Navy)
   ==================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@500;600;700;800&family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Brand Colours */
  --ch-orange: #F7941D;
  --ch-orange-hover: #FFA238;
  --ch-orange-dark: #D6780C;
  --ch-orange-glow: rgba(247, 148, 29, 0.35);
  --ch-orange-glow-lg: 0 0 35px rgba(247, 148, 29, 0.45);
  
  --ch-charcoal: #414042;
  --ch-navy: #23396C;
  --ch-navy-dark: #162447;
  --ch-navy-light: #2D4887;
  --ch-navy-glow: rgba(35, 57, 108, 0.4);
  
  /* Dark Space Theme */
  --ch-bg-deep: #0D0E11;
  --ch-bg-card: #15171C;
  --ch-bg-card-hover: #1C1F26;
  --ch-bg-card-translucent: rgba(21, 23, 28, 0.82);
  
  /* Borders & Accents */
  --ch-border: rgba(247, 148, 29, 0.22);
  --ch-border-focus: #F7941D;
  --ch-border-subtle: rgba(255, 255, 255, 0.08);
  
  /* Typography Colours */
  --ch-text-primary: #FFFFFF;
  --ch-text-secondary: #9CA3AF;
  --ch-text-muted: #6B7280;
  
  /* Status Indicators */
  --ch-green: #10B981;
  --ch-green-glow: rgba(16, 185, 129, 0.3);
  --ch-cyan: #06B6D4;
  --ch-red: #EF4444;
  
  /* Fonts */
  --font-serif: 'Cinzel', 'Trajan Pro', 'Baskerville', serif;
  --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
}

/* Reset & Box Sizing */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  color-scheme: dark;
  background-color: var(--ch-bg-deep);
}

body {
  font-family: var(--font-sans);
  background-color: var(--ch-bg-deep);
  color: var(--ch-text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Typography Helpers */
h1, h2, h3, .brand-title {
  font-family: var(--font-serif);
  letter-spacing: 0.05em;
  font-weight: 700;
}

h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 600;
  letter-spacing: 0.02em;
}

.text-orange { color: var(--ch-orange); }
.text-navy { color: var(--ch-navy-light); }
.text-green { color: var(--ch-green); }
.text-cyan { color: var(--ch-cyan); }
.font-mono { font-family: var(--font-mono); }

/* Containers */
.container {
  max-width: 1320px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--ch-bg-deep);
}
::-webkit-scrollbar-thumb {
  background: #252830;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--ch-orange);
}

/* ====================================================================
   Header & Navigation
   ==================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(13, 14, 17, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--ch-border-subtle);
  transition: all 0.3s ease;
}

.site-header.scrolled {
  border-bottom-color: var(--ch-border);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.6);
}

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

.brand-logo-link {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.brand-logo-img {
  height: 48px;
  width: auto;
  transition: transform 0.3s ease;
}

.brand-logo-link:hover .brand-logo-img {
  transform: scale(1.02);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-link {
  color: var(--ch-text-secondary);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: all 0.25s ease;
  position: relative;
  padding: 6px 0;
}

.nav-link:hover, .nav-link.active {
  color: var(--ch-text-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--ch-orange);
  transition: width 0.25s ease;
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 24px;
  border-radius: 6px;
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  border: 1px solid transparent;
}

.btn-primary {
  background: linear-gradient(135deg, var(--ch-orange) 0%, var(--ch-orange-dark) 100%);
  color: #FFFFFF;
  box-shadow: 0 4px 20px rgba(247, 148, 29, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--ch-orange-hover) 0%, var(--ch-orange) 100%);
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(247, 148, 29, 0.5);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.03);
  border-color: rgba(255, 255, 255, 0.15);
  color: var(--ch-text-primary);
  backdrop-filter: blur(10px);
}

.btn-outline:hover {
  background: rgba(247, 148, 29, 0.1);
  border-color: var(--ch-orange);
  color: var(--ch-orange);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}

/* ====================================================================
   Hero Section with 3D Canvas
   ==================================================================== */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 130px 0 80px 0;
  overflow: hidden;
}

#hero-3d-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  pointer-events: none;
}

.hero-overlay-gradient {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 70% 30%, rgba(247, 148, 29, 0.12) 0%, transparent 60%),
              radial-gradient(circle at 20% 70%, rgba(35, 57, 108, 0.22) 0%, transparent 70%),
              linear-gradient(to bottom, transparent 60%, var(--ch-bg-deep) 100%);
  z-index: 2;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 3;
}

.hero-badge-wrap {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 14px;
  background: rgba(247, 148, 29, 0.1);
  border: 1px solid rgba(247, 148, 29, 0.3);
  border-radius: 9999px;
  margin-bottom: 24px;
  animation: fadeInDown 0.8s ease;
}

.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--ch-green);
  box-shadow: 0 0 10px var(--ch-green);
  animation: pulseGreen 2s infinite;
}

.hero-title {
  font-size: clamp(2.4rem, 5vw, 4.2rem);
  line-height: 1.15;
  margin-bottom: 24px;
  font-weight: 800;
  letter-spacing: -0.01em;
}

.hero-title .gradient-text {
  background: linear-gradient(135deg, #FFFFFF 30%, var(--ch-orange) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--ch-text-secondary);
  max-width: 650px;
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 50px;
}

.hero-stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
  padding-top: 30px;
  border-top: 1px solid var(--ch-border-subtle);
  max-width: 800px;
}

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

.stat-number {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--ch-orange);
  line-height: 1.1;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--ch-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 6px;
}

/* ====================================================================
   Section Common Classes
   ==================================================================== */
.section {
  padding: 100px 0;
  position: relative;
  border-bottom: 1px solid var(--ch-border-subtle);
  scroll-margin-top: 90px;
}

.section-darker {
  background: #090A0C;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 60px auto;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--ch-orange);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  margin-bottom: 16px;
  line-height: 1.25;
}

.section-subtitle {
  color: var(--ch-text-secondary);
  font-size: 1.05rem;
  line-height: 1.65;
}

/* ====================================================================
   Cards & Cyber-Industrial Boxes
   ==================================================================== */
.tech-card {
  background: var(--ch-bg-card);
  border: 1px solid var(--ch-border-subtle);
  border-radius: 12px;
  padding: 32px;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  position: relative;
  overflow: hidden;
}

.tech-card:hover {
  border-color: var(--ch-border);
  transform: translateY(-4px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.5), 0 0 20px rgba(247, 148, 29, 0.12);
}

.tech-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 40px;
  height: 3px;
  background: var(--ch-orange);
  transition: width 0.3s ease;
}

.tech-card:hover::before {
  width: 100%;
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: 10px;
  background: rgba(247, 148, 29, 0.1);
  border: 1px solid rgba(247, 148, 29, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ch-orange);
  margin-bottom: 24px;
}

/* ====================================================================
   Interactive 3D Device Stage
   ==================================================================== */
.device-stage-wrapper {
  background: linear-gradient(180deg, #13151A 0%, #0A0B0E 100%);
  border: 1px solid var(--ch-border);
  border-radius: 16px;
  padding: 40px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.7);
}

.device-3d-viewport {
  width: 100%;
  height: 480px;
  position: relative;
  border-radius: 12px;
  background: radial-gradient(circle at center, #1B1E26 0%, #0C0D10 75%);
  cursor: grab;
}

.device-3d-viewport:active {
  cursor: grabbing;
}

.device-controls-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--ch-border-subtle);
}

.device-hotspot-btn {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--ch-border-subtle);
  color: var(--ch-text-secondary);
  padding: 8px 16px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s ease;
}

.device-hotspot-btn:hover, .device-hotspot-btn.active {
  background: var(--ch-orange);
  color: #FFFFFF;
  border-color: var(--ch-orange);
  box-shadow: 0 0 15px rgba(247, 148, 29, 0.4);
}

/* ====================================================================
   12-Bit vs 8-Bit Scope Slider
   ==================================================================== */
.scope-comparison-container {
  position: relative;
  width: 100%;
  height: 380px;
  border-radius: 12px;
  overflow: hidden;
  border: 1px solid var(--ch-border);
  background: #050608;
  user-select: none;
}

.scope-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.scope-slider-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--ch-orange);
  box-shadow: 0 0 15px var(--ch-orange);
  cursor: ew-resize;
  z-index: 10;
}

.slider-thumb {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--ch-orange);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 20px var(--ch-orange);
}

.scope-badge {
  position: absolute;
  top: 20px;
  padding: 6px 14px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  z-index: 5;
}

.scope-badge-left {
  left: 20px;
  background: rgba(239, 68, 68, 0.2);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: #F87171;
}

.scope-badge-right {
  right: 20px;
  background: rgba(247, 148, 29, 0.2);
  border: 1px solid var(--ch-orange);
  color: var(--ch-orange);
}

/* ====================================================================
   Interactive Terminal (Cisco / Netmiko Live Output)
   ==================================================================== */
.terminal-window {
  background: #090A0D;
  border: 1px solid #232733;
  border-radius: 10px;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
  overflow: hidden;
  font-family: var(--font-mono);
}

.terminal-header {
  background: #141720;
  padding: 10px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #232733;
}

.terminal-dots {
  display: flex;
  gap: 8px;
}

.terminal-dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}

.dot-red { background: #FF5F56; }
.dot-yellow { background: #FFBD2E; }
.dot-green { background: #27C93F; }

.terminal-title {
  color: var(--ch-text-secondary);
  font-size: 0.82rem;
}

.terminal-body {
  padding: 20px;
  height: 320px;
  overflow-y: auto;
  font-size: 0.86rem;
  line-height: 1.6;
  color: #E2E8F0;
}

.prompt-line {
  display: flex;
  gap: 8px;
  margin-bottom: 8px;
}

.prompt-prefix {
  color: var(--ch-orange);
  font-weight: 600;
}

.terminal-output {
  color: #94A3B8;
  margin-bottom: 12px;
}

.terminal-highlight {
  color: var(--ch-green);
  font-weight: 600;
}

/* ====================================================================
   Interactive ROI Calculator
   ==================================================================== */
.calculator-box {
  background: var(--ch-bg-card);
  border: 1px solid var(--ch-border);
  border-radius: 14px;
  padding: 36px;
}

.calc-slider-group {
  margin-bottom: 28px;
}

.calc-slider-header {
  display: flex;
  justify-content: space-between;
  margin-bottom: 10px;
}

.calc-label {
  font-weight: 500;
  color: var(--ch-text-primary);
}

.calc-val-badge {
  font-family: var(--font-mono);
  color: var(--ch-orange);
  font-weight: 700;
}

.calc-range-slider {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: #252833;
  outline: none;
  -webkit-appearance: none;
}

.calc-range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--ch-orange);
  cursor: pointer;
  box-shadow: 0 0 10px var(--ch-orange);
}

.calc-result-panel {
  background: rgba(35, 57, 108, 0.2);
  border: 1px solid rgba(247, 148, 29, 0.3);
  border-radius: 10px;
  padding: 24px;
  text-align: center;
}

.calc-savings-number {
  font-family: var(--font-serif);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--ch-orange);
  line-height: 1.1;
  margin: 10px 0;
}

/* ====================================================================
   Interactive Gemini AI Assistant Widget
   ==================================================================== */
.ai-widget-trigger {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 999;
  background: linear-gradient(135deg, var(--ch-orange) 0%, var(--ch-orange-dark) 100%);
  color: #FFFFFF;
  border: none;
  padding: 14px 22px;
  border-radius: 9999px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  box-shadow: 0 8px 30px rgba(247, 148, 29, 0.5);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.ai-widget-trigger:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 12px 35px rgba(247, 148, 29, 0.7);
}

.ai-chat-modal {
  position: fixed;
  bottom: 95px;
  right: 28px;
  width: 420px;
  max-width: calc(100vw - 40px);
  height: 560px;
  max-height: calc(100vh - 120px);
  background: #111317;
  border: 1px solid var(--ch-border);
  border-radius: 16px;
  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8), 0 0 25px rgba(247, 148, 29, 0.2);
  z-index: 1001;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px) scale(0.95);
}

.ai-chat-modal.open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.ai-chat-header {
  padding: 16px 20px;
  background: #181B22;
  border-bottom: 1px solid var(--ch-border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.ai-badge-header {
  display: flex;
  align-items: center;
  gap: 10px;
}

.ai-chat-body {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.chat-bubble {
  max-width: 85%;
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 0.9rem;
  line-height: 1.5;
}

.chat-bubble-bot {
  background: #1E2129;
  border: 1px solid var(--ch-border-subtle);
  color: var(--ch-text-primary);
  align-self: flex-start;
  border-bottom-left-radius: 2px;
}

.chat-bubble-user {
  background: var(--ch-navy);
  border: 1px solid rgba(247, 148, 29, 0.4);
  color: #FFFFFF;
  align-self: flex-end;
  border-bottom-right-radius: 2px;
}

.chat-chips-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.chat-chip {
  background: rgba(247, 148, 29, 0.1);
  border: 1px solid rgba(247, 148, 29, 0.3);
  color: var(--ch-orange);
  font-size: 0.78rem;
  padding: 5px 10px;
  border-radius: 9999px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.chat-chip:hover {
  background: var(--ch-orange);
  color: #FFFFFF;
}

.ai-chat-footer {
  padding: 14px 16px;
  background: #181B22;
  border-top: 1px solid var(--ch-border-subtle);
  display: flex;
  gap: 10px;
}

.ai-chat-input {
  flex: 1;
  background: #0E1013;
  border: 1px solid var(--ch-border-subtle);
  border-radius: 8px;
  padding: 10px 14px;
  color: #FFFFFF;
  font-size: 0.9rem;
  outline: none;
}

.ai-chat-input:focus {
  border-color: var(--ch-orange);
}

.ai-send-btn {
  background: var(--ch-orange);
  color: #FFFFFF;
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.ai-send-btn:hover {
  background: var(--ch-orange-hover);
}

/* ====================================================================
   Footer
   ==================================================================== */
.site-footer {
  background: #08090B;
  border-top: 1px solid var(--ch-border-subtle);
  padding: 80px 0 30px 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 60px;
}

.footer-col-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  color: #FFFFFF;
  margin-bottom: 20px;
  letter-spacing: 0.05em;
}

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

.footer-links a {
  color: var(--ch-text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--ch-orange);
}

.footer-bottom {
  padding-top: 30px;
  border-top: 1px solid var(--ch-border-subtle);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  color: var(--ch-text-muted);
  font-size: 0.85rem;
}

/* ====================================================================
   Comprehensive Responsive Layout Framework & Grid Architecture
   ==================================================================== */

/* Section Grids (Desktop Defaults) */
.speed-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 40px;
  align-items: start;
}

.terminal-grid {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 40px;
  align-items: start;
}

.exhibition-grid {
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 40px;
  align-items: center;
}

.exhibition-metrics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 24px;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  gap: 40px;
}

.gitex-image-container {
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--ch-border);
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.8);
  background: #0A0C10;
  padding: 6px;
}

.gitex-showcase-img {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 10px;
}

/* Badge Text Switches */
.badge-full {
  display: inline;
}
.badge-short {
  display: none;
}

/* Navigation: Mobile Button & Item defaults on Desktop */
.mobile-menu-btn {
  display: none;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--ch-border);
  border-radius: 8px;
  width: 42px;
  height: 42px;
  padding: 10px 8px;
  cursor: pointer;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  transition: all 0.25s ease;
}

.mobile-menu-btn .hamburger-bar {
  width: 22px;
  height: 2px;
  background: #FFFFFF;
  border-radius: 2px;
  transition: all 0.3s ease;
}

.mobile-menu-btn.active .hamburger-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-menu-btn.active .hamburger-bar:nth-child(2) {
  opacity: 0;
}

.mobile-menu-btn.active .hamburger-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-only-item {
  display: none;
}

/* Tablets & Small Laptops (<= 1024px) */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
}

/* Mobile & Tablet Navigation Breakpoint (<= 920px) */
@media (max-width: 920px) {
  .mobile-menu-btn {
    display: inline-flex;
  }

  .nav-desktop-btn {
    display: none !important;
  }

  .mobile-only-item {
    display: block;
  }

  .nav-menu {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    height: calc(100vh - 72px);
    background: rgba(10, 12, 16, 0.98);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    flex-direction: column;
    padding: 24px 20px 40px 20px;
    gap: 16px;
    overflow-y: auto;
    z-index: 999;
    border-bottom: 1px solid var(--ch-border);
  }

  .nav-menu.open {
    display: flex !important;
    animation: fadeInDown 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  }

  .nav-menu .nav-link {
    font-size: 1.1rem;
    padding: 8px 0;
    border-bottom: 1px solid var(--ch-border-subtle);
    width: 100%;
    display: block;
  }

  .nav-menu .dropdown-menu {
    position: static;
    opacity: 1;
    visibility: visible;
    transform: none;
    pointer-events: auto;
    box-shadow: none;
    border: 1px solid var(--ch-border-subtle);
    background: rgba(22, 26, 34, 0.7);
    padding: 14px;
    margin-top: 8px;
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    gap: 10px;
  }

  .nav-menu .dropdown-link {
    padding: 8px 10px;
  }

  /* Grids collapse to single-column */
  .speed-grid,
  .terminal-grid,
  .exhibition-grid,
  .contact-grid {
    grid-template-columns: 1fr !important;
    gap: 32px;
  }
}

/* Mobile Handhelds (<= 640px) */
@media (max-width: 640px) {
  /* Hero title & text sizing */
  .hero-content.centered .hero-title {
    font-size: clamp(1.8rem, 6.2vw, 2.4rem);
    line-height: 1.22;
  }

  .hero-content.centered .hero-lead {
    font-size: 0.98rem;
    padding: 0 8px;
  }

  .hero-stats-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 16px 12px;
  }

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

  /* 12-Bit Scope Badges: switch to short concise text */
  .badge-full {
    display: none;
  }
  .badge-short {
    display: inline;
  }

  .scope-badge {
    top: 12px;
    padding: 4px 8px;
    font-size: 0.72rem;
  }

  .scope-badge-left {
    left: 10px;
  }

  .scope-badge-right {
    right: 10px;
  }

  /* CapEx Calculator */
  .calc-card {
    padding: 20px 16px;
  }

  .calc-savings-number {
    font-size: 2.1rem;
  }

  /* Optical AI Console Input Bar */
  .ai-console-input-bar {
    flex-direction: column;
    padding: 12px;
    gap: 10px;
  }

  .ai-console-input {
    width: 100%;
  }

  .ai-console-input-bar button {
    width: 100%;
    justify-content: center;
  }

  /* Floating AI Modal full-width on mobile */
  .ai-chat-modal {
    right: 12px !important;
    left: 12px !important;
    width: calc(100% - 24px) !important;
    bottom: 76px !important;
    max-height: 75vh !important;
  }

  .ai-widget-trigger {
    bottom: 16px !important;
    right: 16px !important;
    padding: 10px 16px !important;
    font-size: 0.85rem !important;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

/* Keyframe Animations */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-15px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes pulseGreen {
  0%, 100% { box-shadow: 0 0 4px var(--ch-green); }
  50% { box-shadow: 0 0 14px var(--ch-green); }
}


/* ====================================================================
   Enterprise Mega-Navigation & Dropdown Architecture
   ==================================================================== */
.nav-item-dropdown {
  position: relative;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: -20px;
  min-width: 320px;
  background: rgba(11, 13, 18, 0.96);
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  border: 1px solid var(--ch-border);
  border-radius: 10px;
  padding: 12px;
  box-shadow: 0 20px 45px rgba(0, 0, 0, 0.8), 0 0 20px rgba(247, 148, 29, 0.1);
  display: none;
  flex-direction: column;
  gap: 6px;
  z-index: 1100;
  animation: fadeInDown 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav-item-dropdown:hover .dropdown-menu,
.nav-item-dropdown:focus-within .dropdown-menu {
  display: flex;
}

.dropdown-link {
  display: flex;
  flex-direction: column;
  padding: 10px 14px;
  border-radius: 6px;
  text-decoration: none;
  transition: all 0.2s ease;
}

.dropdown-link:hover {
  background: rgba(247, 148, 29, 0.08);
  border-left: 2px solid var(--ch-orange);
  padding-left: 18px;
}

.dropdown-link-title {
  color: #FFFFFF;
  font-size: 0.92rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.dropdown-link-desc {
  color: var(--ch-text-secondary);
  font-size: 0.78rem;
  margin-top: 3px;
  line-height: 1.4;
}

/* ====================================================================
   Centered Hero & Precision Typography
   ==================================================================== */
.hero-content.centered {
  text-align: center;
  max-width: 980px;
  margin: 0 auto;
}

.hero-content.centered .hero-badge-wrap {
  margin: 0 auto 24px auto;
}

.hero-content.centered .hero-title {
  font-size: clamp(2.3rem, 4.5vw, 3.8rem);
  line-height: 1.15;
  margin-bottom: 24px;
}

.hero-content.centered .hero-lead {
  margin: 0 auto 36px auto;
  max-width: 820px;
  font-size: 1.12rem;
  line-height: 1.7;
}

.hero-content.centered .hero-cta-group {
  justify-content: center;
}

.hero-content.centered .hero-stats-grid {
  margin: 50px auto 0 auto;
  max-width: 960px;
  justify-content: center;
}

/* Pulse animation on scope slider handle */
.slider-thumb {
  animation: pulseAmber 2.2s infinite;
}

@keyframes pulseAmber {
  0%, 100% {
    box-shadow: 0 0 10px var(--ch-orange), 0 0 25px rgba(247, 148, 29, 0.4);
  }
  50% {
    box-shadow: 0 0 22px var(--ch-orange), 0 0 45px rgba(247, 148, 29, 0.7);
  }
}

.scope-interactive-hint {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(247, 148, 29, 0.12);
  border: 1px solid var(--ch-border);
  padding: 8px 20px;
  border-radius: 9999px;
  color: var(--ch-orange);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-top: 14px;
}

.scope-interactive-hint:hover {
  background: var(--ch-orange);
  color: #FFFFFF;
  box-shadow: 0 0 20px rgba(247, 148, 29, 0.4);
}

/* ====================================================================
   Dedicated Optical AI Command Console
   ==================================================================== */
.ai-console-wrapper {
  background: #090B0F;
  border: 1px solid var(--ch-border);
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.7), 0 0 35px rgba(247, 148, 29, 0.15);
  margin-top: 30px;
}

.ai-console-header {
  background: #11141B;
  padding: 16px 24px;
  border-bottom: 1px solid var(--ch-border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}

.ai-console-title-wrap {
  display: flex;
  align-items: center;
  gap: 14px;
}

.ai-console-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--ch-green);
  background: rgba(16, 185, 129, 0.12);
  padding: 4px 12px;
  border-radius: 9999px;
  border: 1px solid rgba(16, 185, 129, 0.3);
}

.ai-console-chat-box {
  height: 380px;
  overflow-y: auto;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: radial-gradient(circle at 50% 20%, rgba(35, 57, 108, 0.15), transparent 70%);
}

.ai-chips-label {
  font-size: 0.82rem;
  color: var(--ch-text-secondary);
  font-weight: 600;
  letter-spacing: 0.04em;
  margin-bottom: 10px;
  text-transform: uppercase;
}

.prompt-chips-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 16px 24px;
  background: #0C0E14;
  border-top: 1px solid var(--ch-border-subtle);
}

.prompt-chip-btn {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: var(--ch-text-primary);
  font-size: 0.84rem;
  padding: 8px 14px;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.25s ease;
  text-align: left;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.prompt-chip-btn:hover {
  background: rgba(247, 148, 29, 0.15);
  border-color: var(--ch-orange);
  color: #FFFFFF;
  transform: translateY(-1px);
}

.ai-console-input-bar {
  display: flex;
  gap: 12px;
  padding: 16px 24px;
  background: #090B0F;
  border-top: 1px solid var(--ch-border-subtle);
}

.ai-console-input {
  flex: 1;
  background: #11141B;
  border: 1px solid var(--ch-border-subtle);
  border-radius: 8px;
  padding: 14px 18px;
  color: #FFFFFF;
  font-size: 0.95rem;
  font-family: var(--font-sans);
  outline: none;
  transition: border-color 0.2s ease;
}

.ai-console-input:focus {
  border-color: var(--ch-orange);
  box-shadow: 0 0 12px rgba(247, 148, 29, 0.25);
}

/* ====================================================================
   Birmingham Testbed Exchange Styling
   ==================================================================== */
.testbed-invitation-box {
  background: linear-gradient(135deg, rgba(35, 57, 108, 0.25) 0%, rgba(247, 148, 29, 0.1) 100%);
  border: 1px solid var(--ch-border);
  border-radius: 12px;
  padding: 32px;
  margin-top: 40px;
  position: relative;
  overflow: hidden;
}

.testbed-invitation-box::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--ch-orange);
}

/* ====================================================================
   Executive Leadership Glass Cards (No Paper Business Cards)
   ==================================================================== */
.exec-glass-card {
  background: rgba(17, 20, 27, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: 12px;
  padding: 36px 28px;
  transition: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  display: flex;
  flex-direction: column;
}

.exec-glass-card:hover {
  border-color: var(--ch-border);
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.8), 0 0 25px rgba(247, 148, 29, 0.15);
}

.exec-role-pill {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--ch-orange);
  margin-bottom: 14px;
  letter-spacing: 0.04em;
}

/* Isolated Hardware Frame */
.isolated-hardware-frame {
  height: 240px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  background: radial-gradient(circle at 50% 50%, rgba(247, 148, 29, 0.08), transparent 70%);
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.05);
  padding: 16px;
}

.isolated-hardware-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  filter: drop-shadow(0 15px 30px rgba(0, 0, 0, 0.9));
  transition: transform 0.4s ease;
}

.tech-card:hover .isolated-hardware-img {
  transform: scale(1.05);
}