/* ==========================================================================
   Linkwave Technologies Pvt. Ltd. (LTPL) - Official Stylesheet (Single-Page)
   Modern, Clean, High-Contrast Telecom & ISP Website Design
   No external dependencies, 100% vanilla CSS with System Font Stack
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Variables & Design Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Brand Palette */
  --color-primary: #0A4D9A;        /* Deep Telecom Blue */
  --color-primary-hover: #073B77;
  --color-primary-light: #EBF3FC;
  --color-accent: #00A896;         /* Modern Vibrant Teal */
  --color-accent-hover: #028A7B;
  --color-accent-dark: #007A6C;    /* High-contrast deep teal */
  --color-accent-light: #E6F7F5;
  --color-accent-subtle: #F0FAF9;

  /* Neutrals & Dark Navy */
  --color-navy: #0B192C;           /* Dark Navy for footer and accents */
  --color-navy-dark: #060F1A;
  --color-navy-surface: #13243C;
  --color-navy-border: #1E3554;

  --color-surface: #FFFFFF;
  --color-background: #F8FAFC;     /* Slate 50 */
  --color-background-alt: #F1F5F9; /* Slate 100 */

  /* Text & Contrast (WCAG AA/AAA compliant) */
  --color-text-main: #0F172A;      /* Slate 900 */
  --color-text-body: #334155;      /* Slate 700 */
  --color-text-muted: #64748B;     /* Slate 500 */
  --color-text-white: #FFFFFF;
  --color-text-inverse-muted: #94A3B8;

  /* Borders & Dividers */
  --color-border: #E2E8F0;
  --color-border-hover: #CBD5E1;

  /* Status Colors */
  --color-success: #059669;
  --color-success-light: #D1FAE5;
  --color-error: #DC2626;
  --color-error-light: #FEE2E2;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, "Helvetica Neue", Arial, sans-serif;
  --line-height-tight: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

  /* Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-sm: 0 2px 4px 0 rgba(15, 23, 42, 0.06);
  --shadow-md: 0 6px 16px -2px rgba(15, 23, 42, 0.08), 0 2px 6px -1px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 12px 28px -4px rgba(15, 23, 42, 0.12), 0 4px 10px -2px rgba(15, 23, 42, 0.06);
  --shadow-xl: 0 20px 35px -5px rgba(10, 77, 154, 0.15), 0 8px 16px -4px rgba(10, 77, 154, 0.08);

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

  /* Spacing */
  --container-max: 1200px;
  --section-padding-y: 5rem;
  --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: var(--line-height-normal);
  color: var(--color-text-body);
  background-color: var(--color-background);
  min-height: 100vh;
  width: 100%;
  max-width: 100vw;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  padding-top: 4.75rem; /* Offset for fixed header */
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

main {
  flex: 1 0 auto;
}

img, svg {
  display: block;
  max-width: 100%;
}

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

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

button, input, textarea {
  font-family: inherit;
  font-size: 1rem;
  color: inherit;
}

/* Section scroll offset for fixed/sticky header */
section[id] {
  scroll-margin-top: 5rem;
}

/* --------------------------------------------------------------------------
   Accessibility: Focus & Skip Link
   -------------------------------------------------------------------------- */
:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  top: -999px;
  left: 1rem;
  background: var(--color-navy);
  color: var(--color-text-white);
  padding: 0.75rem 1.25rem;
  z-index: 9999;
  border-radius: var(--radius-sm);
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  transition: top 0.2s ease;
}

.skip-link:focus {
  top: 1rem;
  outline: 3px solid var(--color-accent);
}

/* --------------------------------------------------------------------------
   Layout Containers & Grid
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.section {
  padding-top: var(--section-padding-y);
  padding-bottom: var(--section-padding-y);
}

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

.section-white {
  background-color: var(--color-surface);
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem auto;
}

.section-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.9rem;
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border: 1px solid rgba(10, 77, 154, 0.15);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.section-badge-teal {
  background-color: var(--color-accent-light);
  color: var(--color-accent-dark);
  border-color: rgba(0, 168, 150, 0.2);
}

.section-title {
  font-size: clamp(1.85rem, 3.5vw, 2.5rem);
  font-weight: 800;
  color: var(--color-text-main);
  line-height: var(--line-height-tight);
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  line-height: var(--line-height-relaxed);
}

/* --------------------------------------------------------------------------
   Typography Helpers
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-text-main);
  line-height: var(--line-height-tight);
}

p {
  line-height: var(--line-height-relaxed);
  margin-bottom: 1rem;
}

p:last-child {
  margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   Header & Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  box-shadow: 0 2px 10px rgba(15, 23, 42, 0.08);
  transition: var(--transition);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.75rem;
}

/* Brand Logo */
.brand-link {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  text-decoration: none;
  color: var(--color-text-main);
}

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-white);
  box-shadow: 0 4px 10px rgba(10, 77, 154, 0.2);
  flex-shrink: 0;
}

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

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-primary);
  line-height: 1.1;
}

.brand-name span {
  color: var(--color-accent);
}

.brand-tagline {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* Desktop Navigation */
.main-nav {
  display: flex;
  align-items: center;
}

.nav-list {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 0.5rem;
}

.nav-link {
  display: inline-block;
  padding: 0.6rem 1.1rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-body);
  border-radius: var(--radius-md);
  position: relative;
  transition: var(--transition);
}

.nav-link:hover {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.nav-link.active {
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  font-weight: 700;
}

.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 3px;
  background-color: var(--color-accent);
  border-radius: var(--radius-full);
}

/* Mobile Menu Button */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.6rem;
  cursor: pointer;
  color: var(--color-text-main);
  transition: var(--transition);
}

.nav-toggle:hover {
  background-color: var(--color-background-alt);
  border-color: var(--color-border-hover);
}

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

.nav-toggle .icon-close {
  display: none;
}

.nav-toggle[aria-expanded="true"] .icon-hamburger {
  display: none;
}

.nav-toggle[aria-expanded="true"] .icon-close {
  display: block;
}

/* --------------------------------------------------------------------------
   Buttons & CTA Elements
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.6rem;
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
  text-decoration: none;
  text-align: center;
  white-space: nowrap;
}

.btn-sm {
  padding: 0.45rem 1rem;
  font-size: 0.875rem;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-white);
  box-shadow: 0 4px 14px rgba(10, 77, 154, 0.25);
}

.btn-primary:hover, .btn-primary:focus-visible {
  background-color: var(--color-primary-hover);
  color: var(--color-text-white);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(10, 77, 154, 0.35);
}

.btn-accent {
  background-color: var(--color-accent);
  color: var(--color-text-white);
  box-shadow: 0 4px 14px rgba(0, 168, 150, 0.25);
}

.btn-accent:hover, .btn-accent:focus-visible {
  background-color: var(--color-accent-hover);
  color: var(--color-text-white);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 168, 150, 0.35);
}

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

.btn-outline:hover, .btn-outline:focus-visible {
  background-color: var(--color-primary-light);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-white {
  background-color: var(--color-surface);
  color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.btn-white:hover, .btn-white:focus-visible {
  background-color: #F8FAFC;
  color: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-copy {
  padding: 0.4rem 0.9rem;
  font-size: 0.85rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-primary);
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.btn-copy:hover {
  background-color: var(--color-primary-light);
  border-color: var(--color-primary);
}

/* --------------------------------------------------------------------------
   Hero Section
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  background: linear-gradient(135deg, #072346 0%, #0A4D9A 55%, #006699 100%);
  color: var(--color-text-white);
  padding: 5rem 0 6rem 0;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: radial-gradient(circle at 20% 30%, rgba(0, 168, 150, 0.18) 0%, transparent 40%),
                    radial-gradient(circle at 80% 70%, rgba(2, 195, 154, 0.12) 0%, transparent 50%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 3.5rem;
  position: relative;
  z-index: 1;
}

.hero-content {
  max-width: 640px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background-color: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 700;
  color: #A5F3FC;
  margin-bottom: 1.5rem;
}

.hero-title {
  font-size: clamp(2.2rem, 4.5vw, 3.4rem);
  font-weight: 800;
  line-height: 1.15;
  color: var(--color-text-white);
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.hero-title span {
  color: #38BDF8;
  display: block;
}

.hero-tagline {
  font-size: 1.25rem;
  font-weight: 600;
  color: #E2E8F0;
  margin-bottom: 1rem;
  line-height: 1.45;
}

.hero-description {
  font-size: 1.05rem;
  color: #CBD5E1;
  line-height: var(--line-height-relaxed);
  margin-bottom: 2.25rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2rem;
}

.hero-key-message {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem 1.25rem;
  background-color: rgba(0, 0, 0, 0.25);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-sm);
  font-size: 0.925rem;
  color: #E2E8F0;
  line-height: 1.5;
}

.hero-key-message svg {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  color: var(--color-accent);
  margin-top: 2px;
}

/* Hero Visual SVG Card */
.hero-card {
  width: 100%;
  max-width: 480px;
  background: rgba(255, 255, 255, 0.07);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
}

.hero-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding-bottom: 1rem;
  margin-bottom: 1.5rem;
}

.hero-card-title {
  font-size: 0.9rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: #94A3B8;
}

.hero-indicator {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: #34D399;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  background-color: #34D399;
  border-radius: var(--radius-full);
  box-shadow: 0 0 10px #34D399;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 8px rgba(52, 211, 153, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(52, 211, 153, 0); }
}

/* --------------------------------------------------------------------------
   Strict Stats Strip (Only 3 permitted statistics)
   -------------------------------------------------------------------------- */
.stats-strip {
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  position: relative;
  margin-top: -2.5rem;
  z-index: 10;
  border-radius: var(--radius-lg);
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  divide-x: 1px solid var(--color-border);
}

.stat-item {
  padding: 2.25rem 1.5rem;
  text-align: center;
  position: relative;
}

.stat-item:not(:last-child)::after {
  content: "";
  position: absolute;
  right: 0;
  top: 25%;
  height: 50%;
  width: 1px;
  background-color: var(--color-border);
}

.stat-value {
  font-size: clamp(1.35rem, 2.4vw, 2rem);
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: 0.5rem;
}

.stat-label {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   Who We Serve Cards
   -------------------------------------------------------------------------- */
.cards-grid-3 {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: 2rem;
}

.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(10, 77, 154, 0.3);
}

.card-icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  transition: var(--transition);
}

.card:hover .card-icon {
  background: var(--color-primary);
  color: var(--color-text-white);
}

.card-icon svg {
  width: 28px;
  height: 28px;
}

.card-title {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--color-text-main);
}

.card-desc {
  color: var(--color-text-muted);
  font-size: 0.975rem;
  line-height: var(--line-height-relaxed);
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.card-feature-list {
  list-style: none;
  border-top: 1px solid var(--color-border);
  padding-top: 1rem;
}

.card-feature-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-body);
  margin-bottom: 0.5rem;
}

.card-feature-item:last-child {
  margin-bottom: 0;
}

.card-feature-item svg {
  width: 16px;
  height: 16px;
  color: var(--color-accent);
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   Vision Points Section
   -------------------------------------------------------------------------- */
.vision-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr));
  gap: 1.5rem;
}

.vision-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  text-align: center;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.vision-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  opacity: 0;
  transition: var(--transition);
}

.vision-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-border-hover);
}

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

.vision-icon-wrap {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-full);
  background: var(--color-accent-light);
  color: var(--color-accent-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1.25rem auto;
}

.vision-icon-wrap svg {
  width: 24px;
  height: 24px;
}

.vision-name {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-text-main);
}

.vision-meaning {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   Key Highlight Message Callout Banner
   -------------------------------------------------------------------------- */
.key-message-banner {
  background: linear-gradient(135deg, var(--color-navy) 0%, #132C4E 100%);
  color: var(--color-text-white);
  border-radius: var(--radius-xl);
  padding: 3rem;
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
  margin-top: 3.5rem;
}

.key-message-banner::after {
  content: "";
  position: absolute;
  top: -50px;
  right: -50px;
  width: 200px;
  height: 200px;
  background: radial-gradient(circle, rgba(0, 168, 150, 0.25) 0%, transparent 70%);
  border-radius: var(--radius-full);
}

.key-message-content {
  position: relative;
  z-index: 1;
  max-width: 860px;
  margin: 0 auto;
  text-align: center;
}

.key-message-tag {
  display: inline-block;
  padding: 0.3rem 0.9rem;
  background-color: rgba(0, 168, 150, 0.2);
  color: #38BDF8;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
}

.key-message-text {
  font-size: clamp(1.2rem, 2.5vw, 1.5rem);
  font-weight: 700;
  line-height: 1.5;
  color: var(--color-text-white);
}

/* --------------------------------------------------------------------------
   Services Grid & Filter Controls
   -------------------------------------------------------------------------- */
.filter-controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

.filter-btn {
  background-color: var(--color-surface);
  color: var(--color-text-body);
  border: 1px solid var(--color-border);
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-full);
  font-size: 0.925rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.filter-btn.active {
  background-color: var(--color-primary);
  color: var(--color-text-white);
  border-color: var(--color-primary);
  box-shadow: 0 4px 12px rgba(10, 77, 154, 0.25);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr));
  gap: 2rem;
}

.service-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, box-shadow 0.25s ease, opacity 0.25s ease, border-color 0.25s ease;
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(10, 77, 154, 0.25);
}

.service-card.hidden {
  display: none;
}

.service-card-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
}

.service-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

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

.service-tag {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.7rem;
  background-color: var(--color-background-alt);
  color: var(--color-text-muted);
  border-radius: var(--radius-full);
}

.service-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 0.75rem;
}

.service-desc {
  color: var(--color-text-muted);
  font-size: 0.975rem;
  line-height: var(--line-height-relaxed);
  flex-grow: 1;
}

/* --------------------------------------------------------------------------
   Network & Coverage Elements
   -------------------------------------------------------------------------- */
.infra-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 280px), 1fr));
  gap: 2rem;
  margin-bottom: 3.5rem;
}

.infra-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-sm);
}

.infra-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.infra-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--color-accent-light);
  color: var(--color-accent-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.infra-icon svg {
  width: 24px;
  height: 24px;
}

.infra-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text-main);
}

.infra-desc {
  color: var(--color-text-body);
  font-size: 1rem;
  line-height: var(--line-height-relaxed);
}

/* Partners Box (Plain text names only, as required) */
.partners-section {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2.75rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 3.5rem;
  text-align: center;
}

.partners-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-text-main);
}

.partners-intro {
  color: var(--color-text-muted);
  max-width: 680px;
  margin: 0 auto 2rem auto;
}

.partners-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1.25rem;
}

.partner-item {
  background-color: var(--color-background-alt);
  border: 1px solid var(--color-border);
  padding: 1.1rem 2rem;
  border-radius: var(--radius-md);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.partner-item svg {
  width: 18px;
  height: 18px;
  color: var(--color-accent);
}

/* Coverage Grid */
.locations-container {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2.5rem;
}

.location-group-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-sm);
}

.location-group-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.location-group-title svg {
  width: 24px;
  height: 24px;
  color: var(--color-primary);
}

.location-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.25rem;
}

.location-chip {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border: 1px solid rgba(10, 77, 154, 0.15);
  padding: 0.45rem 1rem;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 600;
}

.planned-card {
  background: linear-gradient(135deg, var(--color-accent-subtle) 0%, var(--color-surface) 100%);
  border: 1px solid rgba(0, 168, 150, 0.25);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  display: flex;
  flex-direction: column;
}

/* --------------------------------------------------------------------------
   Contact Page Elements
   -------------------------------------------------------------------------- */
.contact-layout {
  display: grid;
  grid-template-columns: 1.05fr 1.15fr;
  gap: 3rem;
  align-items: start;
}

.contact-info-panel {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
}

.contact-info-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--color-text-main);
}

.contact-info-desc {
  color: var(--color-text-muted);
  margin-bottom: 2rem;
  font-size: 0.95rem;
}

.contact-details-list {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.contact-detail-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-icon-box svg {
  width: 22px;
  height: 22px;
}

.contact-detail-text {
  flex-grow: 1;
}

.contact-label {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
}

.contact-value {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-text-main);
  line-height: 1.4;
  word-break: break-word;
}

.email-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.35rem;
}

.email-link {
  color: var(--color-primary);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
  word-break: break-all;
  overflow-wrap: anywhere;
}

.email-link:hover {
  color: var(--color-accent);
}

/* Contact Form */
.contact-form-panel {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-size: 0.925rem;
  font-weight: 700;
  color: var(--color-text-main);
  margin-bottom: 0.5rem;
}

.form-label span.req {
  color: var(--color-error);
}

.form-control {
  width: 100%;
  padding: 0.85rem 1rem;
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-background);
  color: var(--color-text-main);
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  background-color: var(--color-surface);
  box-shadow: 0 0 0 3px rgba(10, 77, 154, 0.15);
}

.form-control.input-error {
  border-color: var(--color-error);
  background-color: #FFF8F8;
}

.form-control.input-error:focus {
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.15);
}

textarea.form-control {
  min-height: 140px;
  resize: vertical;
}

.field-error {
  display: none;
  font-size: 0.825rem;
  color: var(--color-error);
  margin-top: 0.35rem;
  font-weight: 600;
}

.field-error.active {
  display: block;
}

.form-note {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 1rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.form-note svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  color: var(--color-primary);
}

.form-status {
  display: none;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin-top: 1.25rem;
  font-size: 0.925rem;
  line-height: 1.4;
}

.form-status.active {
  display: block;
}

.form-status-info {
  background-color: var(--color-primary-light);
  border: 1px solid rgba(10, 77, 154, 0.2);
  color: var(--color-primary-hover);
}

/* --------------------------------------------------------------------------
   CTA Section Strip (High contrast solid fallback + rich gradient)
   -------------------------------------------------------------------------- */
.cta-strip {
  background-color: #0A4D9A;
  background: linear-gradient(135deg, #0A4D9A 0%, #007A6C 100%);
  color: #FFFFFF;
  padding: 4.5rem 0;
  text-align: center;
}

.cta-strip-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  color: #FFFFFF;
  margin-bottom: 1rem;
}

.cta-strip-desc {
  font-size: 1.15rem;
  color: #E0F2FE;
  max-width: 680px;
  margin: 0 auto 2rem auto;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background-color: var(--color-navy);
  color: var(--color-text-inverse-muted);
  padding-top: 4.5rem;
  border-top: 1px solid var(--color-navy-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 0.8fr 1.3fr;
  gap: 3.5rem;
  margin-bottom: 3.5rem;
}

.footer-col-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text-white);
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

.footer-about p {
  color: var(--color-text-inverse-muted);
  font-size: 0.925rem;
  line-height: 1.65;
  margin-bottom: 1.25rem;
}

.footer-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.8rem;
  background-color: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-full);
  font-size: 0.775rem;
  font-weight: 600;
  color: #38BDF8;
}

.footer-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-nav-link {
  color: var(--color-text-inverse-muted);
  font-size: 0.95rem;
  transition: var(--transition);
  display: inline-block;
}

.footer-nav-link:hover {
  color: #38BDF8;
  transform: translateX(3px);
}

.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  font-size: 0.925rem;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  line-height: 1.5;
}

.footer-contact-item svg {
  width: 18px;
  height: 18px;
  color: #38BDF8;
  flex-shrink: 0;
  margin-top: 3px;
}

.footer-email-link {
  color: #38BDF8;
  text-decoration: underline;
  text-underline-offset: 3px;
  word-break: break-all;
}

.footer-email-link:hover {
  color: var(--color-text-white);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 1.75rem 0;
  text-align: center;
  font-size: 0.875rem;
  color: #64748B;
}

/* --------------------------------------------------------------------------
   Back-to-Top Button
   -------------------------------------------------------------------------- */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 46px;
  height: 46px;
  background-color: var(--color-primary);
  color: var(--color-text-white);
  border: none;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: var(--transition);
  z-index: 900;
}

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

.back-to-top:hover {
  background-color: var(--color-accent);
  transform: translateY(-3px);
}

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

/* --------------------------------------------------------------------------
   Scroll-Reveal Animations
   -------------------------------------------------------------------------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
  will-change: opacity, transform;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
  .pulse-dot {
    animation: none !important;
  }
}

/* --------------------------------------------------------------------------
   Responsive Media Queries
   -------------------------------------------------------------------------- */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
    text-align: center;
  }
  .hero-content {
    max-width: 100%;
    margin: 0 auto;
  }
  .hero-actions {
    justify-content: center;
  }
  .hero-key-message {
    text-align: left;
    max-width: 600px;
    margin: 0 auto;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
  .contact-layout {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .locations-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .section {
    padding-top: 3.5rem;
    padding-bottom: 3.5rem;
  }

  /* Mobile Navigation Menu */
  .nav-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
  }

  .main-nav {
    position: fixed;
    top: 4.75rem;
    left: 0;
    right: 0;
    background-color: var(--color-surface);
    border-bottom: 2px solid var(--color-border);
    padding: 1.25rem 1.5rem;
    box-shadow: var(--shadow-xl);
    display: none;
    flex-direction: column;
    align-items: stretch;
    max-height: calc(100vh - 4.75rem);
    overflow-y: auto;
    z-index: 999;
  }

  .main-nav.open {
    display: flex;
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: 0.5rem;
  }

  .nav-link {
    padding: 0.85rem 1rem;
    width: 100%;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    display: flex;
    align-items: center;
  }

  .nav-link.active::after {
    display: none;
  }

  /* Strict Stats Grid on Mobile */
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .stat-item:not(:last-child)::after {
    display: none;
  }

  .stat-item {
    border-bottom: 1px solid var(--color-border);
    padding: 1.5rem 1rem;
  }

  .stat-item:last-child {
    border-bottom: none;
  }

  .stats-strip {
    margin-top: -1.75rem;
  }

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

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.25rem;
  }

  .key-message-banner {
    padding: 2rem 1.5rem;
  }

  .key-message-text {
    font-size: 1.15rem;
  }

  .partners-section {
    padding: 2rem 1.5rem;
  }

  .contact-info-panel,
  .contact-form-panel {
    padding: 1.75rem;
  }

  .back-to-top {
    bottom: 1.25rem;
    right: 1.25rem;
  }
}

@media (max-width: 480px) {
  :root {
    --section-padding-y: 3rem;
  }

  body {
    padding-top: 4.25rem;
  }

  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .header-container {
    height: 4.25rem;
  }

  .brand-icon {
    width: 38px;
    height: 38px;
  }

  .brand-icon svg {
    width: 22px;
    height: 22px;
  }

  .brand-name {
    font-size: 1.18rem;
  }

  .brand-tagline {
    font-size: 0.65rem;
  }

  .main-nav {
    top: 4.25rem;
    padding: 1rem;
  }

  section[id] {
    scroll-margin-top: 4.5rem;
  }

  .hero {
    padding: 3.5rem 0 4rem 0;
  }

  .hero-badge {
    font-size: 0.78rem;
    padding: 0.35rem 0.8rem;
    margin-bottom: 1.15rem;
  }

  .hero-title {
    font-size: 1.85rem;
  }

  .hero-tagline {
    font-size: 1.05rem;
  }

  .hero-description {
    font-size: 0.95rem;
    margin-bottom: 1.75rem;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
    gap: 0.75rem;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-card {
    padding: 1.25rem 0.85rem;
    border-radius: var(--radius-lg);
  }

  .hero-key-message {
    padding: 0.85rem 1rem;
    font-size: 0.875rem;
  }

  .stat-item {
    padding: 1.25rem 0.75rem;
  }

  .stat-value {
    font-size: 1.35rem;
  }

  .stat-label {
    font-size: 0.875rem;
  }

  .section-title {
    font-size: 1.65rem;
  }

  .section-subtitle {
    font-size: 0.975rem;
  }

  .card {
    padding: 1.5rem 1.15rem;
  }

  .card-title {
    font-size: 1.2rem;
  }

  .vision-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .vision-card {
    padding: 1.35rem 1rem;
  }

  .filter-controls {
    gap: 0.4rem;
  }

  .filter-btn {
    padding: 0.5rem 0.95rem;
    font-size: 0.825rem;
  }

  .partner-item {
    padding: 0.75rem 1.25rem;
    font-size: 1rem;
    width: 100%;
    justify-content: center;
  }

  .location-group-card,
  .planned-card {
    padding: 1.5rem 1.15rem;
  }

  .location-chips {
    gap: 0.4rem;
  }

  .location-chip {
    padding: 0.35rem 0.75rem;
    font-size: 0.825rem;
  }

  .contact-info-panel,
  .contact-form-panel {
    padding: 1.5rem 1.15rem;
    border-radius: var(--radius-lg);
  }

  .contact-detail-item {
    gap: 0.75rem;
  }

  .contact-icon-box {
    width: 38px;
    height: 38px;
    min-width: 38px;
  }

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

  .contact-label {
    font-size: 0.75rem;
  }

  .contact-value {
    font-size: 0.95rem;
  }

  .email-actions {
    margin-top: 0.5rem;
  }

  .form-control {
    font-size: 1rem; /* Prevents auto-zoom on mobile */
    padding: 0.75rem 0.85rem;
  }

  .cta-strip {
    padding: 3.5rem 1rem;
  }

  .cta-strip-title {
    font-size: 1.6rem;
  }

  .cta-strip-desc {
    font-size: 1rem;
  }

  .cta-strip .btn-white {
    width: 100%;
  }

  .site-footer {
    padding-top: 3.5rem;
  }

  .footer-bottom {
    padding: 1.25rem 0;
    font-size: 0.825rem;
  }

  .back-to-top {
    bottom: 1rem;
    right: 1rem;
    width: 42px;
    height: 42px;
  }
}

@media (max-width: 360px) {
  .brand-name {
    font-size: 1.05rem;
  }

  .hero-title {
    font-size: 1.65rem;
  }

  .btn {
    padding: 0.65rem 1rem;
    font-size: 0.925rem;
  }

  .filter-btn {
    width: 100%;
    text-align: center;
  }
}