/* ==========================================================================
   Teleglobal US - Modern Enterprise Design System & Stylesheet
   Version: 2.0.0
   Author: Senior Full-Stack Web Architect & Lead UI/UX Engineer
   Brand: Teleglobal US (Teleglobal International INC)
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Design Tokens & Root Variables
   -------------------------------------------------------------------------- */
:root {
  /* Brand Color Palette */
  --color-primary-navy: #061d3b;
  --color-primary-dark: #030d1a;
  --color-primary-deep: #0a254a;
  --color-primary-surface: #0f315d;
  
  --color-accent-blue: #0066ff;
  --color-accent-light: #2aa7ff;
  --color-accent-cyan: #00d2ff;
  --color-accent-hover: #0052cc;
  --color-accent-glow: rgba(42, 167, 255, 0.35);

  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;

  /* Neutral Surface & Background Colors */
  --color-bg-body: #f8fafc;
  --color-bg-card: #ffffff;
  --color-bg-card-alt: #f1f5f9;
  --color-bg-dark-section: #051429;
  --color-bg-footer: #041326;
  --color-bg-subfooter: #020b17;

  /* Text & Typography Colors */
  --color-text-main: #0f172a;
  --color-text-muted: #475569;
  --color-text-light: #94a3b8;
  --color-text-white: #ffffff;
  --color-text-hero-sub: #e2e8f0;

  /* Borders & Dividers */
  --color-border-light: #e2e8f0;
  --color-border-subtle: #cbd5e1;
  --color-border-glass: rgba(255, 255, 255, 0.15);
  --color-border-glass-hover: rgba(42, 167, 255, 0.4);

  /* Shadows & Elevations */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.03);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --shadow-card-hover: 0 20px 35px -8px rgba(6, 29, 59, 0.18);
  --shadow-glow: 0 0 25px rgba(42, 167, 255, 0.25);

  /* Typography Scale */
  --font-family-base: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-family-heading: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  
  --font-size-xs: 0.75rem;     /* 12px */
  --font-size-sm: 0.875rem;    /* 14px */
  --font-size-base: 1rem;      /* 16px */
  --font-size-lg: 1.125rem;    /* 18px */
  --font-size-xl: 1.25rem;     /* 20px */
  --font-size-2xl: 1.5rem;     /* 24px */
  --font-size-3xl: 1.875rem;   /* 30px */
  --font-size-4xl: 2.25rem;    /* 36px */
  --font-size-5xl: 3rem;       /* 48px */
  
  --line-height-tight: 1.2;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.65;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;

  /* Border Radii */
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout Max Widths */
  --max-width-container: 1280px;
  --header-height: 80px;
}

/* --------------------------------------------------------------------------
   2. Reset & Base Elements
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 100%;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  overflow-x: clip; /* Fixes horizontal overflow without disabling sticky nav */
}

body {
  font-family: var(--font-family-base);
  font-size: var(--font-size-base);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-main);
  background-color: var(--color-bg-body);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip; /* Never overflow-x: hidden on body as it breaks position: sticky in some engines */
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input, button, textarea, select {
  font: inherit;
  color: inherit;
}

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

a:hover {
  color: var(--color-accent-hover);
}

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

p {
  margin-block-end: var(--space-4);
}

p:last-child {
  margin-block-end: 0;
}

/* Accessible Screen Reader Utility */
.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* Focus Visible for WCAG 2.4.7 AA Compliance */
:focus-visible {
  outline: 3px solid var(--color-accent-light);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Skip Navigation Link */
.skip-link {
  position: absolute;
  top: -100px;
  inset-inline-start: var(--space-4);
  background: var(--color-accent-blue);
  color: #ffffff;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-weight: 600;
  z-index: 9999;
  transition: top var(--transition-base);
  box-shadow: var(--shadow-lg);
}

.skip-link:focus {
  top: var(--space-4);
  color: #ffffff;
}

/* --------------------------------------------------------------------------
   3. Container & Layout Grid
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--max-width-container);
  margin-inline: auto;
  padding-inline: var(--space-5);
}

@media (min-width: 768px) {
  .container {
    padding-inline: var(--space-8);
  }
}

.section {
  padding-block: var(--space-16);
  position: relative;
}

@media (min-width: 992px) {
  .section {
    padding-block: var(--space-24);
  }
}

.section--dark {
  background-color: var(--color-bg-dark-section);
  color: var(--color-text-white);
}

.section--dark h2,
.section--dark h3 {
  color: var(--color-text-white);
}

.section--alt {
  background-color: var(--color-bg-card-alt);
}

/* Section Header Component */
.section-header {
  text-align: center;
  max-width: 820px;
  margin-inline: auto;
  margin-block-end: var(--space-12);
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-1) var(--space-3);
  background: rgba(0, 102, 255, 0.08);
  color: var(--color-accent-blue);
  border: 1px solid rgba(0, 102, 255, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-block-end: var(--space-3);
}

.section--dark .section-tag {
  background: rgba(42, 167, 255, 0.15);
  color: var(--color-accent-light);
  border-color: rgba(42, 167, 255, 0.3);
}

.section-title {
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  margin-block-end: var(--space-4);
  color: var(--color-primary-navy);
}

.section--dark .section-title {
  color: var(--color-text-white);
}

.section-subtitle {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

.section--dark .section-subtitle {
  color: var(--color-text-hero-sub);
}

/* --------------------------------------------------------------------------
   4. Header & Sticky Glassmorphism Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  width: 100%;
  height: var(--header-height);
  background-color: rgba(6, 29, 59, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-block-end: 1px solid var(--color-border-glass);
  z-index: 1000;
  transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

.site-header.scrolled {
  background-color: rgba(4, 19, 38, 0.96);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Brand Logo */
.brand-logo-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  min-height: 48px;
}

.brand-logo-img {
  width: auto;
  max-width: 210px;
  height: 38px;
  object-fit: contain;
}

/* SVG Fallback Brand Emblem */
.brand-logo-fallback {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-white);
  font-family: var(--font-family-heading);
  font-weight: 800;
  font-size: 1.35rem;
  letter-spacing: -0.01em;
}

.brand-logo-icon {
  width: 34px;
  height: 34px;
  flex-shrink: 0;
  color: var(--color-accent-light);
}

.brand-logo-badge {
  background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent-blue));
  color: #ffffff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  margin-inline-start: 4px;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Navigation Menu */
.primary-nav {
  display: none;
}

@media (min-width: 992px) {
  .primary-nav {
    display: flex;
    align-items: center;
    gap: var(--space-8);
  }
}

.nav-list {
  display: flex;
  align-items: center;
  list-style: none;
  gap: var(--space-6);
  margin: 0;
  padding: 0;
}

.nav-link {
  color: #e2e8f0;
  font-size: var(--font-size-base);
  font-weight: 500;
  padding: var(--space-2) var(--space-1);
  position: relative;
  transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-accent-light);
}

.nav-link.active {
  color: var(--color-text-white);
  font-weight: 700;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -4px;
  inset-inline-start: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent-light), var(--color-accent-cyan));
  border-radius: var(--radius-full);
}

/* Header CTAs */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.header-phone-link {
  display: none;
  align-items: center;
  gap: var(--space-2);
  color: #cbd5e1;
  font-size: var(--font-size-sm);
  font-weight: 600;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.15);
  transition: all var(--transition-fast);
}

.header-phone-link:hover {
  color: #ffffff;
  border-color: var(--color-accent-light);
  background: rgba(42, 167, 255, 0.1);
}

@media (min-width: 1200px) {
  .header-phone-link {
    display: inline-flex;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 48px;
  min-width: 48px;
  padding: var(--space-3) var(--space-6);
  font-weight: 600;
  font-size: var(--font-size-base);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  border: 1px solid transparent;
  white-space: nowrap;
  line-height: 1;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-accent-blue) 0%, #0052cc 100%);
  color: #ffffff;
  box-shadow: 0 4px 14px rgba(0, 102, 255, 0.35);
}

.btn--primary:hover {
  background: linear-gradient(135deg, #1a75ff 0%, #0044ab 100%);
  color: #ffffff;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 102, 255, 0.45);
}

.btn--secondary {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(8px);
}

.btn--secondary:hover {
  background: rgba(255, 255, 255, 0.2);
  color: #ffffff;
  border-color: var(--color-accent-light);
  transform: translateY(-2px);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary-navy);
  border-color: var(--color-border-subtle);
}

.btn--outline:hover {
  border-color: var(--color-accent-blue);
  color: var(--color-accent-blue);
  background: rgba(0, 102, 255, 0.04);
}

.btn--sm {
  min-height: 40px;
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
}

.btn--lg {
  min-height: 54px;
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
}

/* Mobile Menu Hamburger Button */
.mobile-nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 48px;
  min-height: 48px;
  padding: var(--space-2);
  background: transparent;
  border: 1px solid var(--color-border-glass);
  border-radius: var(--radius-md);
  color: #ffffff;
  cursor: pointer;
}

@media (min-width: 992px) {
  .mobile-nav-toggle {
    display: none;
  }
}

.mobile-nav-toggle svg {
  width: 24px;
  height: 24px;
}

/* Mobile Navigation Drawer */
.mobile-drawer {
  position: fixed;
  top: 0;
  inset-inline-end: -100%;
  width: min(85vw, 380px);
  height: 100vh;
  background: #061d3b;
  box-shadow: -10px 0 30px rgba(0, 0, 0, 0.5);
  z-index: 2000;
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  transition: inset-inline-end var(--transition-slow);
  overflow-y: auto;
}

.mobile-drawer.is-open {
  inset-inline-end: 0;
}

.mobile-drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(4px);
  z-index: 1999;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base);
}

.mobile-drawer-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-block-end: var(--space-8);
  padding-block-end: var(--space-4);
  border-block-end: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-drawer-close {
  min-width: 48px;
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-md);
  color: #ffffff;
  cursor: pointer;
}

.mobile-drawer-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  min-height: 48px;
  padding: var(--space-2) var(--space-3);
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: #e2e8f0;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link:focus-visible {
  background: rgba(42, 167, 255, 0.1);
  color: var(--color-accent-light);
}

.mobile-nav-link.active {
  background: rgba(0, 102, 255, 0.2);
  color: #ffffff;
  border-inline-start: 4px solid var(--color-accent-light);
}

.mobile-drawer-footer {
  margin-top: auto;
  padding-top: var(--space-8);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* --------------------------------------------------------------------------
   5. Hero Section & Video / Tech Canvas Backdrop
   -------------------------------------------------------------------------- */
.hero-section {
  position: relative;
  min-height: calc(100vh - var(--header-height));
  display: flex;
  align-items: center;
  background-color: var(--color-primary-navy);
  color: var(--color-text-white);
  overflow: hidden;
  padding-block: var(--space-16);
}

@media (min-width: 992px) {
  .hero-section {
    min-height: 85vh;
  }
}

.hero-backdrop {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
}

/* High Contrast Mask to guarantee WCAG 1.4.3 text contrast (> 7:1) */
.hero-contrast-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 75% 25%, rgba(11, 37, 69, 0.85) 0%, rgba(3, 13, 26, 0.94) 80%);
  z-index: 2;
}

.hero-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
  z-index: 1;
  opacity: 0.35;
  filter: saturate(1.2) contrast(1.1);
}

/* Interactive Video Play/Pause Control (WCAG 2.2.2 Compliance) */
.video-control-btn {
  position: absolute;
  bottom: var(--space-6);
  inset-inline-end: var(--space-6);
  z-index: 10;
  min-width: 48px;
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  background: rgba(6, 29, 59, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.25);
  backdrop-filter: blur(8px);
  color: #ffffff;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.video-control-btn:hover,
.video-control-btn:focus-visible {
  background: rgba(0, 102, 255, 0.85);
  border-color: var(--color-accent-light);
}

.hero-content {
  position: relative;
  z-index: 5;
  max-width: 880px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: rgba(42, 167, 255, 0.12);
  border: 1px solid rgba(42, 167, 255, 0.3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-accent-light);
  margin-block-end: var(--space-6);
  backdrop-filter: blur(4px);
}

.hero-title {
  font-size: clamp(2.1rem, 4.5vw, 3.75rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: #ffffff;
  margin-block-end: var(--space-6);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-title-highlight {
  background: linear-gradient(135deg, #ffffff 30%, var(--color-accent-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: clamp(1.05rem, 1.8vw, 1.25rem);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-hero-sub);
  margin-block-end: var(--space-8);
  max-width: 740px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-block-end: var(--space-12);
}

/* Hero Stats Bar */
.hero-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  padding-block-start: var(--space-6);
  border-block-start: 1px solid rgba(255, 255, 255, 0.12);
}

@media (min-width: 768px) {
  .hero-stats-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-6);
  }
}

.hero-stat-card {
  display: flex;
  flex-direction: column;
}

.hero-stat-number {
  font-family: var(--font-family-heading);
  font-size: clamp(1.6rem, 2.5vw, 2.25rem);
  font-weight: 800;
  color: var(--color-accent-light);
  line-height: 1.1;
  margin-block-end: var(--space-1);
}

.hero-stat-label {
  font-size: var(--font-size-xs);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-light);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   6. Services Section (Core Grid & Cards)
   -------------------------------------------------------------------------- */
.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 640px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.service-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  padding: var(--space-8) var(--space-6);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  height: 100%;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  inset-inline: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent-blue), var(--color-accent-light));
  opacity: 0;
  transition: opacity var(--transition-base);
}

.service-card:hover,
.service-card:focus-within {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card-hover);
  border-color: rgba(0, 102, 255, 0.25);
}

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

.service-icon-wrapper {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-md);
  background: rgba(0, 102, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-block-end: var(--space-6);
  padding: var(--space-3);
  transition: transform var(--transition-base), background-color var(--transition-base);
}

.service-card:hover .service-icon-wrapper {
  transform: scale(1.08);
  background: rgba(0, 102, 255, 0.12);
}

.service-icon-img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

.service-card-title {
  font-size: var(--font-size-xl);
  color: var(--color-primary-navy);
  margin-block-end: var(--space-3);
  font-weight: 700;
  line-height: var(--line-height-snug);
}

.service-card-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
  margin-block-end: var(--space-6);
  flex-grow: 1;
}

.service-card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-accent-blue);
  margin-top: auto;
}

.service-card-link svg {
  transition: transform var(--transition-fast);
}

.service-card:hover .service-card-link svg {
  transform: translateX(4px);
}

/* --------------------------------------------------------------------------
   7. Narrative Deep-Dive Sections (Alternating Rows)
   -------------------------------------------------------------------------- */
.narrative-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  align-items: center;
  margin-block-end: var(--space-16);
}

.narrative-row:last-child {
  margin-block-end: 0;
}

@media (min-width: 992px) {
  .narrative-row {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-16);
  }

  .narrative-row--reversed > .narrative-content {
    order: 2;
  }

  .narrative-row--reversed > .narrative-visual {
    order: 1;
  }
}

.narrative-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent-blue);
  margin-block-end: var(--space-3);
}

.narrative-title {
  font-size: clamp(1.65rem, 3vw, 2.35rem);
  color: var(--color-primary-navy);
  margin-block-end: var(--space-4);
  line-height: var(--line-height-tight);
}

.narrative-desc {
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
  margin-block-end: var(--space-6);
}

.narrative-points {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-block-end: var(--space-8);
}

.narrative-point {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--font-size-sm);
  color: var(--color-text-main);
  font-weight: 500;
}

.narrative-point-icon {
  width: 20px;
  height: 20px;
  color: var(--color-success);
  flex-shrink: 0;
  margin-top: 2px;
}

/* Visual Wrapper with Hover Polish */
.narrative-visual {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  background-color: #ffffff;
  border: 1px solid var(--color-border-light);
}

.narrative-media-container {
  aspect-ratio: 16 / 10;
  width: 100%;
  overflow: hidden;
  position: relative;
}

.narrative-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.16, 1, 0.3, 1), filter 0.6s ease;
}

.narrative-visual:hover .narrative-img {
  transform: scale(1.04);
}

.narrative-badge-overlay {
  position: absolute;
  bottom: var(--space-4);
  inset-inline-start: var(--space-4);
  background: rgba(6, 29, 59, 0.9);
  backdrop-filter: blur(8px);
  color: #ffffff;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.15);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--font-size-xs);
  font-weight: 600;
}

/* --------------------------------------------------------------------------
   8. Client Testimonials Carousel (Accessible WCAG 4.1.2)
   -------------------------------------------------------------------------- */
.testimonial-section {
  background: linear-gradient(135deg, #0a254a 0%, #061d3b 50%, #030d1a 100%);
  color: #ffffff;
  position: relative;
  overflow: hidden;
}

.testimonial-carousel-container {
  max-width: 900px;
  margin-inline: auto;
  position: relative;
  padding-block: var(--space-4);
}

.testimonial-track {
  position: relative;
  min-height: 260px;
  display: flex;
  align-items: center;
}

.testimonial-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.5s ease, transform 0.5s ease;
  transform: translateX(20px);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.testimonial-slide.is-active {
  position: relative;
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

.testimonial-card {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--color-border-glass);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.3);
  text-align: center;
}

@media (min-width: 768px) {
  .testimonial-card {
    padding: var(--space-12) var(--space-10);
  }
}

.testimonial-quote-icon {
  width: 44px;
  height: 44px;
  color: var(--color-accent-light);
  margin-inline: auto;
  margin-block-end: var(--space-6);
  opacity: 0.85;
}

.testimonial-quote-text {
  font-size: clamp(1.15rem, 2vw, 1.45rem);
  font-weight: 500;
  line-height: var(--line-height-relaxed);
  color: #ffffff;
  font-style: italic;
  margin-block-end: var(--space-8);
}

.testimonial-author-meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
}

.testimonial-avatar {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-full);
  background: linear-gradient(135deg, var(--color-accent-light), var(--color-accent-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: var(--font-size-base);
  color: #ffffff;
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.testimonial-author-info {
  text-align: start;
}

.testimonial-author-name {
  font-weight: 700;
  font-size: var(--font-size-base);
  color: #ffffff;
}

.testimonial-author-title {
  font-size: var(--font-size-xs);
  color: var(--color-text-light);
}

/* Carousel Nav Controls */
.carousel-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  margin-block-start: var(--space-8);
}

.carousel-btn {
  min-width: 48px;
  min-height: 48px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--color-border-glass);
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.carousel-btn:hover,
.carousel-btn:focus-visible {
  background: var(--color-accent-blue);
  border-color: var(--color-accent-light);
  transform: scale(1.08);
}

.carousel-dots {
  display: flex;
  gap: var(--space-2);
  align-items: center;
}

.carousel-dot {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.25);
  border: none;
  cursor: pointer;
  padding: 0;
  transition: all var(--transition-fast);
}

.carousel-dot.is-active {
  width: 32px;
  background: var(--color-accent-light);
}

/* --------------------------------------------------------------------------
   9. FAQ Accordion Section (AEO / Answer Engine Optimization)
   -------------------------------------------------------------------------- */
.faq-grid {
  max-width: 860px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.faq-item {
  background: var(--color-bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.faq-item:hover {
  border-color: rgba(0, 102, 255, 0.2);
}

.faq-item.is-open {
  border-color: var(--color-accent-blue);
  box-shadow: var(--shadow-md);
}

.faq-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: var(--space-5) var(--space-6);
  background: transparent;
  border: none;
  text-align: start;
  font-family: var(--font-family-heading);
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-primary-navy);
  cursor: pointer;
}

.faq-icon {
  width: 20px;
  height: 20px;
  color: var(--color-accent-blue);
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

.faq-item.is-open .faq-icon {
  transform: rotate(180deg);
}

.faq-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.faq-content {
  padding: 0 var(--space-6) var(--space-6);
  font-size: var(--font-size-base);
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

/* --------------------------------------------------------------------------
   10. Delaware USA Location & Split Interactive Map Section
   -------------------------------------------------------------------------- */
.location-section {
  background-color: var(--color-primary-navy);
  color: var(--color-text-white);
  padding-block: var(--space-16);
  border-block-start: 1px solid rgba(255, 255, 255, 0.1);
}

.location-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
  align-items: stretch;
}

@media (min-width: 992px) {
  .location-grid {
    grid-template-columns: 1fr 1.1fr;
    gap: var(--space-12);
  }
}

.location-info-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border-glass);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.location-title {
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  color: #ffffff;
  margin-block-end: var(--space-3);
}

.location-entity {
  font-size: var(--font-size-base);
  color: var(--color-accent-light);
  font-weight: 700;
  margin-block-end: var(--space-6);
}

.location-details-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  margin-block-end: var(--space-8);
}

.location-detail-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  font-size: var(--font-size-base);
}

.location-detail-icon {
  width: 24px;
  height: 24px;
  color: var(--color-accent-light);
  flex-shrink: 0;
  margin-top: 2px;
}

.location-address {
  line-height: var(--line-height-relaxed);
  color: var(--color-text-hero-sub);
}

.location-phone-link {
  color: #ffffff;
  font-size: var(--font-size-lg);
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.location-phone-link:hover {
  color: var(--color-accent-light);
}

.location-map-wrapper {
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border-glass);
  min-height: 380px;
  position: relative;
  background-color: #030d1a;
}

.location-map-iframe {
  width: 100%;
  height: 100%;
  min-height: 380px;
  border: 0;
  display: block;
}

/* --------------------------------------------------------------------------
   11. Unified Master Footer & Subfooter
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--color-bg-footer);
  color: #cbd5e1;
  border-block-start: 1px solid rgba(255, 255, 255, 0.08);
  padding-block-start: var(--space-16);
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  margin-block-end: var(--space-12);
}

@media (min-width: 640px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
  }
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
}

.footer-brand-desc {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: var(--line-height-relaxed);
  margin-block: var(--space-4) var(--space-6);
  max-width: 360px;
}

.footer-social-links {
  display: flex;
  gap: var(--space-3);
}

.footer-social-link {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #ffffff;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.footer-social-link:hover {
  background: var(--color-accent-blue);
  border-color: var(--color-accent-light);
  transform: translateY(-2px);
}

.footer-heading {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-base);
  font-weight: 700;
  color: #ffffff;
  margin-block-end: var(--space-5);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.footer-link {
  font-size: var(--font-size-sm);
  color: #94a3b8;
  transition: color var(--transition-fast), transform var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.footer-link:hover {
  color: var(--color-accent-light);
  transform: translateX(4px);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--font-size-sm);
  color: #94a3b8;
  margin-block-end: var(--space-4);
}

.footer-contact-icon {
  width: 18px;
  height: 18px;
  color: var(--color-accent-light);
  flex-shrink: 0;
  margin-top: 3px;
}

/* Sub-Footer */
.sub-footer {
  background-color: var(--color-bg-subfooter);
  padding-block: var(--space-6);
  border-block-start: 1px solid rgba(255, 255, 255, 0.05);
}

.sub-footer-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  text-align: center;
}

@media (min-width: 768px) {
  .sub-footer-container {
    flex-direction: row;
    text-align: start;
  }
}

.copyright-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
}

.sub-footer-links {
  display: flex;
  gap: var(--space-6);
  list-style: none;
}

.sub-footer-link {
  font-size: var(--font-size-xs);
  color: var(--color-text-light);
}

.sub-footer-link:hover {
  color: var(--color-accent-light);
}

/* --------------------------------------------------------------------------
   12. Floating Back-to-Top Button (Strict Requirement)
   -------------------------------------------------------------------------- */
.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  inset-inline-end: var(--space-6);
  min-width: 48px;
  min-height: 48px;
  width: 50px;
  height: 50px;
  border-radius: var(--radius-full);
  background: var(--color-accent-blue);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.25);
  box-shadow: 0 4px 20px rgba(0, 102, 255, 0.4);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(16px);
  transition: opacity var(--transition-base), transform var(--transition-base), background var(--transition-fast);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover,
.back-to-top:focus-visible {
  background: var(--color-accent-light);
  color: #030d1a;
  transform: translateY(-4px);
  box-shadow: 0 8px 25px rgba(42, 167, 255, 0.5);
}

.back-to-top svg {
  width: 22px;
  height: 22px;
}

/* --------------------------------------------------------------------------
   13. Form Controls & Consultation Request (Contact & CTA)
   -------------------------------------------------------------------------- */
.contact-form-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-xl);
}

@media (min-width: 768px) {
  .contact-form-card {
    padding: var(--space-10);
  }
}

.form-group {
  margin-block-end: var(--space-5);
}

.form-label {
  display: block;
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-text-main);
  margin-block-end: var(--space-2);
}

.form-control {
  width: 100%;
  min-height: 48px;
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-base);
  border: 1px solid var(--color-border-subtle);
  border-radius: var(--radius-md);
  background-color: #ffffff;
  color: var(--color-text-main);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-accent-blue);
  box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.15);
}

textarea.form-control {
  min-height: 120px;
  resize: vertical;
}

.form-feedback {
  margin-block-start: var(--space-4);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  display: none;
}

.form-feedback.is-success {
  display: block;
  background-color: #ecfdf5;
  color: #065f46;
  border: 1px solid #a7f3d0;
}

/* --------------------------------------------------------------------------
   14. Subpage Specific Modules (About & Services)
   -------------------------------------------------------------------------- */
.page-hero {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary-navy) 100%);
  color: #ffffff;
  padding-block: var(--space-16) var(--space-12);
  border-block-end: 1px solid var(--color-border-glass);
}

.page-hero-content {
  max-width: 800px;
}

.page-hero-title {
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 800;
  color: #ffffff;
  margin-block-end: var(--space-4);
}

.page-hero-desc {
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  color: var(--color-text-hero-sub);
  line-height: var(--line-height-relaxed);
}

.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  list-style: none;
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  margin-block-end: var(--space-4);
}

.breadcrumb a {
  color: var(--color-accent-light);
}

.breadcrumb-separator {
  color: var(--color-text-light);
}

/* Service Deep-Dive Pillar Blocks */
.service-pillar-card {
  background: var(--color-bg-card);
  border-radius: var(--radius-xl);
  border: 1px solid var(--color-border-light);
  padding: var(--space-8);
  box-shadow: var(--shadow-md);
  margin-block-end: var(--space-8);
}

@media (min-width: 768px) {
  .service-pillar-card {
    padding: var(--space-10);
  }
}

.badge-pill {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 700;
  background: rgba(0, 102, 255, 0.1);
  color: var(--color-accent-blue);
  margin-inline-end: var(--space-2);
  margin-block-end: var(--space-2);
}

/* Partner / Tech Badges Grid */
.tech-badges-grid {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  padding-block: var(--space-8);
}

.tech-badge-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: #ffffff;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-primary-navy);
}

.tech-badge-item svg {
  width: 24px;
  height: 24px;
  color: var(--color-accent-blue);
}

/* --------------------------------------------------------------------------
   15. Media Queries for Mobile, Tablet, and Desktop Viewports
   -------------------------------------------------------------------------- */
@media (max-width: 480px) {
  :root {
    --header-height: 70px;
  }

  .btn {
    width: 100%;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

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