/* ==========================================================================
   VARAM R TECH - Main Stylesheet
   Brand Colors (Matched to Official VRT Logo & Showroom Signage):
   - Primary Water Blue: #0284C7 / #0369A1 / #F0F9FF
   - Electric Water Cyan: #00A3FF / #38BDF8 / #E0F2FE
   - Royal Navy Base: #0B254A / #071A36
   - Warm Amber Gold: #D97706 / #FEF3C7
   ========================================================================== */

:root {
  /* Brand Logo & Water Purification Color Palette */
  --brand-primary: #0284C7;         /* Radiant Water Blue */
  --brand-primary-dark: #0369A1;    /* Deep Ocean Blue */
  --brand-primary-hover: #0274B0;
  --brand-primary-light: #F0F9FF;   /* Pristine Water Tint */
  --brand-primary-border: #BAE6FD;
  
  --brand-cyan: #00A3FF;            /* Electric Luminous Cyan (from VRT glowing droplet) */
  --brand-cyan-dark: #0087D6;
  --brand-cyan-light: #E0F2FE;
  --brand-cyan-border: #7DD3FC;

  --brand-royal: #0B3B8B;           /* Royal Blue from the Official Brand Poster */
  --brand-royal-dark: #072559;
  
  --brand-navy: #0B254A;            /* Deep Royal Navy (Showroom Wall & Signage Base) */
  --brand-navy-dark: #061730;
  --brand-navy-card: #0F2F5E;
  
  --brand-gold: #D97706;            /* Warm Amber Gold (Showroom Backlit LED & Poster trim) */
  --brand-gold-hover: #B45309;
  --brand-gold-light: #FEF3C7;
  --brand-gold-border: #FDE68A;

  /* Aliases to ensure complete backward compatibility across all existing pages */
  --brand-pink: #0284C7;
  --brand-pink-dark: #0369A1;
  --brand-pink-hover: #00A3FF;
  --brand-pink-light: #F0F9FF;
  --brand-pink-border: #BAE6FD;
  
  --brand-blue: #0284C7;
  --brand-blue-dark: #0369A1;
  --brand-blue-light: #F0F9FF;
  --brand-blue-border: #BAE6FD;
  
  --slate-950: #020617;
  --slate-900: #0A1C38;
  --slate-850: #0F2548;
  --slate-800: #1E293B;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748B;
  --slate-400: #94A3B8;
  --slate-200: #E2E8F0;
  --slate-100: #F1F5F9;
  --slate-50: #F8FAFC;
  --white: #FFFFFF;
  
  --font-main: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-tamil: 'Noto Sans Tamil', system-ui, sans-serif;
  
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 25px -5px rgba(2, 132, 199, 0.12);
  --shadow-xl: 0 20px 35px -10px rgba(11, 37, 74, 0.15);
  --shadow-pink: 0 10px 25px -5px rgba(2, 132, 199, 0.35);
  --shadow-primary: 0 10px 25px -5px rgba(2, 132, 199, 0.35);
  --shadow-cyan: 0 10px 25px -5px rgba(0, 163, 255, 0.35);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 18px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  
  --container-max: 1240px;
}

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

html {
  scroll-behavior: smooth;
  font-family: var(--font-main);
  background-color: #0A3663;
  color: var(--slate-800);
  overflow-x: hidden;
  max-width: 100%;
}

body {
  line-height: 1.6;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background-color: #0A3663;
  background-image: 
    linear-gradient(180deg, rgba(10, 54, 99, 0.40) 0%, rgba(2, 132, 199, 0.20) 600px, rgba(10, 54, 99, 0.50) 100%),
    url('../img/water-drop-bg.jpg');
  background-attachment: fixed;
  background-position: center top;
  background-size: cover;
  background-repeat: no-repeat;
  color: var(--slate-800);
}

main {
  flex-grow: 1;
}

a {
  text-decoration: none;
  color: inherit;
  transition: all 0.2s ease;
}

ul {
  list-style: none;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

button, input, select, textarea {
  font-family: inherit;
}

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

/* Utility Classes */
.font-tamil {
  font-family: var(--font-tamil);
}

/* Top Notification / Contact Bar */
.top-bar {
  background: linear-gradient(90deg, #061730 0%, #0B254A 100%);
  color: var(--slate-200);
  font-size: 12px;
  padding: 8px 0;
  border-bottom: 1px solid rgba(0, 163, 255, 0.2);
}

.top-bar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.top-bar-taglines {
  display: flex;
  align-items: center;
  gap: 8px;
}

.top-bar-badge {
  background: linear-gradient(135deg, #00A3FF, #0284C7);
  color: var(--white);
  padding: 2px 8px;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 11px;
}

.top-bar-contact {
  display: flex;
  align-items: center;
  gap: 16px;
  font-weight: 600;
}

.top-bar-contact a:hover {
  color: var(--brand-cyan);
}

/* Header & Navbar - Sleek Deep Navy Theme for Maximum Logo Contrast & Impact */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: linear-gradient(180deg, #05142B 0%, #091F3F 100%);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.45);
  border-bottom: 1px solid rgba(0, 163, 255, 0.3);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}

.brand-logo-img {
  height: 60px;
  width: auto;
  max-width: 90px;
  object-fit: contain;
  display: block;
  filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.6));
  transition: transform 0.25s ease;
}

.brand-logo:hover .brand-logo-img {
  transform: scale(1.06);
}

.logo-icon {
  width: 44px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform 0.2s ease;
}

.brand-logo:hover .logo-icon {
  transform: scale(1.06);
}

.vrt-logo-img {
  width: 100%;
  height: 100%;
  display: block;
  filter: drop-shadow(0 4px 8px rgba(2, 132, 199, 0.35));
}

.footer-logo-badge {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(0, 163, 255, 0.3);
  padding: 8px 12px;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform 0.25s ease;
}

.footer-logo-badge:hover {
  transform: scale(1.05);
  border-color: #00A3FF;
}

.footer-brand-img {
  height: 52px;
  width: auto;
  max-width: 75px;
  object-fit: contain;
  display: block;
  filter: drop-shadow(0 2px 6px rgba(0, 0, 0, 0.6));
}

.brand-name-wrap {
  display: flex;
  flex-direction: column;
  white-space: nowrap;
  flex-shrink: 0;
}

.brand-title {
  font-size: 21.5px;
  font-weight: 900;
  letter-spacing: -0.3px;
  line-height: 1.15;
  color: #FBBF24;
  background: linear-gradient(135deg, #FDE047 0%, #F59E0B 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
  padding-top: 6px;
}

.brand-title span {
  color: #FBBF24;
  background: linear-gradient(135deg, #FDE047 0%, #F59E0B 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
}

.brand-r-wrap {
  position: relative;
  display: inline-block;
  color: #FBBF24;
  background: linear-gradient(135deg, #FDE047 0%, #F59E0B 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  white-space: nowrap;
  margin: 0 1px;
}

.brand-r-wrap::before {
  content: '';
  position: absolute;
  top: -11px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 12px;
  background: url('../img/crown.svg') center/contain no-repeat;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.6));
  pointer-events: none;
}

.brand-subtitle {
  font-size: 10px;
  font-weight: 700;
  color: #38BDF8;
  letter-spacing: 0.25px;
  white-space: nowrap;
}

/* Nav Menu */
.desktop-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  padding: 8px 13px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  font-weight: 600;
  color: #E2E8F0;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  transition: all 0.2s ease;
}

.nav-link:hover, .nav-link.active {
  color: #38BDF8;
  background-color: rgba(0, 163, 255, 0.14);
}

.dropdown {
  position: relative;
}

.dropdown-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  width: 270px;
  background-color: #071933;
  border: 1px solid rgba(0, 163, 255, 0.25);
  border-radius: var(--radius-md);
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.6);
  padding: 8px;
  z-index: 200;
}

.dropdown:hover .dropdown-menu {
  display: block;
}

.dropdown-item {
  display: block;
  padding: 9px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  color: #CBD5E1;
  font-weight: 500;
  transition: all 0.15s ease;
}

.dropdown-item:hover, .dropdown-item.active {
  background-color: rgba(0, 163, 255, 0.16);
  color: #38BDF8;
  font-weight: 700;
  padding-left: 18px;
}

/* Header Action Buttons */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  border: none;
  transition: all 0.2s ease;
}

.btn-pink, .btn-primary {
  background: linear-gradient(135deg, #00A3FF 0%, #0284C7 50%, #083B80 100%);
  color: var(--white);
  box-shadow: 0 8px 22px -4px rgba(2, 132, 199, 0.45);
}

.btn-pink:hover, .btn-primary:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg, #38BDF8 0%, #0284C7 50%, #0369A1 100%);
  box-shadow: 0 12px 28px -4px rgba(0, 163, 255, 0.5);
}

.btn-cyan {
  background: linear-gradient(135deg, #38BDF8 0%, #00A3FF 100%);
  color: #061730;
  box-shadow: 0 8px 20px -4px rgba(0, 163, 255, 0.4);
}

.btn-cyan:hover {
  transform: translateY(-2px);
  background: linear-gradient(135deg, #7DD3FC 0%, #0284C7 100%);
  color: var(--white);
  box-shadow: 0 12px 26px -4px rgba(0, 163, 255, 0.55);
}

.btn-whatsapp {
  background-color: #10B981;
  color: var(--white);
}

.btn-whatsapp:hover {
  background-color: #059669;
}

.btn-outline-whatsapp {
  border: 1px solid #10B981;
  color: #34D399;
  background-color: rgba(16, 185, 129, 0.12);
  font-weight: 700;
}

.btn-outline-whatsapp:hover {
  background-color: #10B981;
  color: #FFFFFF;
}

.btn-navy {
  background-color: var(--brand-navy);
  color: var(--white);
}

.btn-navy:hover {
  background-color: var(--slate-900);
}

.btn-outline {
  border: 1px solid var(--slate-200);
  background-color: var(--white);
  color: var(--slate-700);
}

.btn-outline:hover {
  background-color: var(--slate-50);
  border-color: var(--slate-300);
}

/* Mobile Menu Hamburger */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 26px;
  cursor: pointer;
  color: #FFFFFF;
  padding: 6px;
}

/* Mobile Drawer */
.mobile-drawer {
  display: none;
  background: linear-gradient(180deg, #05142B 0%, #091F3F 100%);
  border-bottom: 2px solid #00A3FF;
  padding: 16px 20px 24px;
  box-shadow: 0 16px 36px rgba(0, 0, 0, 0.6);
}

.mobile-drawer.show {
  display: block;
}

.mobile-nav-link {
  display: block;
  padding: 10px 12px;
  font-size: 15px;
  font-weight: 600;
  color: #E2E8F0;
  border-radius: var(--radius-sm);
}

.mobile-nav-link:hover, .mobile-nav-link.active {
  background-color: rgba(0, 163, 255, 0.15);
  color: #38BDF8;
}

.mobile-nav-group-title {
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  color: #94A3B8;
  padding: 12px 12px 4px;
}

.mobile-nav-sublinks {
  padding-left: 12px;
  border-left: 2px solid rgba(0, 163, 255, 0.3);
  margin-left: 12px;
  margin-bottom: 8px;
}

/* Hero Section with Balanced Royal Ocean Blue Water Drop Background */
.hero-section {
  position: relative;
  padding: 65px 0 85px;
  background:
    linear-gradient(135deg, rgba(10, 54, 99, 0.75) 0%, rgba(3, 105, 161, 0.58) 50%, rgba(0, 163, 255, 0.32) 100%),
    url('../img/water-drop-bg.jpg') center center / cover no-repeat;
  border-bottom: 2px solid rgba(56, 189, 248, 0.4);
  box-shadow: 0 8px 30px rgba(10, 54, 99, 0.25);
  overflow: hidden;
}

/* Subpage Header Banner with Royal Ocean Blue Water Drop Background */
.page-header {
  position: relative;
  padding: 56px 0 44px;
  text-align: center;
  background:
    linear-gradient(135deg, rgba(10, 54, 99, 0.80) 0%, rgba(3, 105, 161, 0.65) 50%, rgba(0, 163, 255, 0.35) 100%),
    url('../img/water-drop-bg.jpg') center center / cover no-repeat;
  border-bottom: 2px solid rgba(56, 189, 248, 0.4);
  box-shadow: 0 4px 20px rgba(10, 54, 99, 0.20);
}

.page-header .hero-title,
.page-header h1 {
  color: #FFFFFF !important;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.4);
}

.page-header .section-desc {
  color: #E2E8F0 !important;
  text-shadow: none;
}

.page-header .badge-tag {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  width: fit-content;
}

.hero-section .badge-tag {
  background: rgba(255, 255, 255, 0.95);
  color: #0369A1;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.badge-pink, .badge-primary {
  background-color: var(--brand-cyan-light);
  color: var(--brand-primary-dark);
  border: 1px solid var(--brand-cyan-border);
}

.badge-blue {
  background-color: var(--brand-primary-light);
  color: var(--brand-primary-dark);
  border: 1px solid var(--brand-primary-border);
}

.badge-gold {
  background-color: var(--brand-gold-light);
  color: var(--brand-gold-hover);
  border: 1px solid var(--brand-gold-border);
}

.hero-title {
  font-size: 48px;
  font-weight: 900;
  line-height: 1.15;
  color: #FFFFFF;
  letter-spacing: -1px;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.35);
}

.hero-title .highlight {
  color: #38BDF8;
  background: linear-gradient(135deg, #BAE6FD 0%, #38BDF8 60%, #00B4D8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 2px 10px rgba(0, 163, 255, 0.5));
}

.hero-tagline-card {
  background: rgba(10, 45, 85, 0.85);
  border: 1px solid rgba(56, 189, 248, 0.45);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.25);
  backdrop-filter: blur(8px);
}

.hero-tagline-en {
  font-size: 18px;
  font-weight: 800;
  color: #38BDF8;
}

.hero-tagline-ta {
  font-size: 16px;
  font-weight: 700;
  color: #F0F9FF;
  margin-top: 4px;
}

.hero-desc {
  font-size: 15.5px;
  color: #F1F5F9;
  line-height: 1.7;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}

.hero-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 8px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  padding-top: 24px;
  border-top: 1px solid rgba(56, 189, 248, 0.35);
}

.hero-stats .stat-item strong,
.stat-item strong {
  font-size: 32px;
  font-weight: 900;
  display: block;
  line-height: 1;
  color: #FFFFFF !important;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.hero-stats .stat-item p,
.stat-item p {
  font-size: 12px;
  font-weight: 700;
  color: #BAE6FD !important;
  margin-top: 4px;
}

/* Hero Feature Card (Right) */
.hero-card {
  background-color: rgba(255, 255, 255, 0.96);
  border-radius: var(--radius-xl);
  padding: 24px;
  border: 1px solid rgba(56, 189, 248, 0.45);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
}

.hero-image-wrap {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  margin-bottom: 20px;
}

.hero-image-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-image-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 20px;
  background: linear-gradient(to top, rgba(2,6,23,0.85) 0%, transparent 100%);
  color: var(--white);
}

.checklist {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.check-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 600;
  color: var(--slate-700);
}

.check-icon {
  color: #10B981;
  font-weight: bold;
}

/* Sections Standard */
.section {
  padding: 70px 0;
  background: rgba(255, 255, 255, 0.90);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.section-alt {
  background: rgba(240, 249, 255, 0.88);
  border-top: 1px solid rgba(186, 230, 253, 0.7);
  border-bottom: 1px solid rgba(186, 230, 253, 0.7);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.section-dark {
  background: linear-gradient(180deg, rgba(7, 26, 54, 0.97) 0%, rgba(4, 16, 33, 0.98) 100%);
  color: var(--white);
  border-top: 2px solid rgba(0, 163, 255, 0.35);
  border-bottom: 2px solid rgba(0, 163, 255, 0.35);
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 48px;
}

.section-subtitle {
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--brand-primary);
  letter-spacing: 1px;
}

.section-title {
  font-size: 36px;
  font-weight: 900;
  color: var(--slate-900);
  letter-spacing: -0.5px;
  margin-top: 4px;
}

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

.section-desc {
  font-size: 14px;
  color: var(--slate-600);
  margin-top: 8px;
}

.section-dark .section-desc {
  color: var(--slate-400);
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 28px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

/* Product & Solution Cards */
.card {
  background-color: var(--white);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(186, 230, 253, 0.85);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 4px 16px rgba(2, 132, 199, 0.08);
  transition: all 0.3s ease;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 28px rgba(2, 132, 199, 0.18);
  border-color: #00A3FF;
}

.card-img-wrap {
  position: relative;
  aspect-ratio: 16 / 10;
  background-color: var(--slate-100);
  overflow: hidden;
}

.card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.card:hover .card-img-wrap img {
  transform: scale(1.05);
}

.card-badge {
  position: absolute;
  top: 14px;
  left: 14px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 11px;
  font-weight: 800;
  text-transform: uppercase;
  background: linear-gradient(135deg, #00A3FF 0%, #0284C7 100%);
  color: var(--white);
  box-shadow: 0 4px 10px rgba(2, 132, 199, 0.35);
}

.card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.card-title {
  font-size: 20px;
  font-weight: 800;
  color: var(--slate-900);
  line-height: 1.25;
}

.card-desc {
  font-size: 13px;
  color: var(--slate-600);
  line-height: 1.6;
}

.specs-box {
  background-color: var(--slate-50);
  border: 1px solid var(--slate-100);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  font-size: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.specs-row {
  display: flex;
  justify-content: space-between;
}

.specs-label {
  color: var(--slate-400);
  font-weight: 700;
  text-transform: uppercase;
  font-size: 10px;
}

.specs-val {
  color: var(--slate-800);
  font-weight: 700;
}

.card-footer {
  padding: 0 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* Interactive TDS Guide Box */
.tds-guide-wrapper {
  background: linear-gradient(135deg, var(--brand-primary-light) 0%, var(--white) 50%, var(--brand-cyan-light) 100%);
  border: 1px solid var(--brand-primary-border);
  border-radius: var(--radius-xl);
  padding: 40px;
  box-shadow: var(--shadow-lg);
}

.tds-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 36px;
  align-items: center;
  margin-top: 24px;
}

.tds-options-group {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.tds-option-label {
  font-size: 12px;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--slate-800);
}

.options-pills {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.pill-btn {
  padding: 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--slate-200);
  background-color: var(--white);
  color: var(--slate-700);
  font-size: 12px;
  font-weight: 700;
  cursor: pointer;
  text-align: left;
  transition: all 0.2s;
}

.pill-btn.active {
  border-color: var(--brand-primary);
  background: linear-gradient(135deg, #00A3FF 0%, #0284C7 100%);
  color: var(--white);
  box-shadow: 0 4px 12px rgba(0, 163, 255, 0.35);
}

.tds-result-card {
  background-color: var(--white);
  border: 2px solid var(--brand-cyan);
  border-radius: var(--radius-xl);
  padding: 28px;
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Comparison Table */
.comparison-table-wrap {
  background-color: var(--white);
  border-radius: var(--radius-xl);
  border: 1px solid var(--slate-200);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 13px;
}

.comparison-table th, .comparison-table td {
  padding: 16px 20px;
  border-bottom: 1px solid var(--slate-200);
}

.comparison-table th {
  background-color: var(--slate-50);
  font-size: 11px;
  text-transform: uppercase;
  font-weight: 800;
}

.comparison-table th.highlight-col, .comparison-table td.highlight-col {
  background-color: var(--brand-primary-light);
  font-weight: 700;
  color: var(--brand-navy);
}

/* Testimonial Cards */
.review-card {
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-xl);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
}

.stars {
  color: #F59E0B;
  font-size: 16px;
}

.review-quote {
  font-size: 13px;
  font-style: italic;
  color: var(--slate-700);
  line-height: 1.6;
}

/* Forms */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--slate-700);
}

.form-control {
  width: 100%;
  padding: 12px 14px;
  border-radius: var(--radius-md);
  border: 1px solid var(--slate-200);
  font-size: 13px;
  color: var(--slate-800);
  background-color: var(--white);
  transition: border-color 0.2s;
}

.form-control:focus {
  outline: none;
  border-color: var(--brand-cyan);
  box-shadow: 0 0 0 3px rgba(0, 163, 255, 0.2);
}

/* Modal Popup */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 500;
  background-color: rgba(6, 23, 48, 0.75);
  backdrop-filter: blur(4px);
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-overlay.open {
  display: flex;
}

.modal-content {
  background-color: var(--white);
  border-radius: var(--radius-xl);
  max-width: 520px;
  width: 100%;
  padding: 32px;
  position: relative;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--slate-400);
}

/* Floating Action Buttons (Call on Left, WhatsApp on Right) */
.call-float-wrap {
  position: fixed;
  bottom: 28px;
  left: 24px;
  z-index: 400;
}

.call-float-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #00A3FF 0%, #0284C7 100%);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 25px rgba(2, 132, 199, 0.45);
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
}

.call-float-btn:hover {
  transform: scale(1.12) translateY(-2px);
  box-shadow: 0 14px 30px rgba(0, 163, 255, 0.6);
  color: #FFFFFF;
}

.call-pulse-ring {
  position: absolute;
  top: -4px;
  left: -4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: #00A3FF;
  border: 2px solid #FFFFFF;
  animation: callPulse 2s infinite;
}

@keyframes callPulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 163, 255, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(0, 163, 255, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(0, 163, 255, 0); }
}

.whatsapp-float-wrap {
  position: fixed;
  bottom: 28px;
  right: 24px;
  z-index: 400;
}

.whatsapp-float-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, #25D366 0%, #10B981 100%);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 25px rgba(16, 185, 129, 0.45);
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  text-decoration: none;
}

.whatsapp-float-btn:hover {
  transform: scale(1.12) translateY(-2px);
  box-shadow: 0 14px 30px rgba(37, 211, 102, 0.6);
  color: #FFFFFF;
}

.pulse-ring {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background-color: #25D366;
  border: 2px solid #FFFFFF;
  animation: waPulse 2s infinite;
}

@keyframes waPulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7); }
  70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(37, 211, 102, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(37, 211, 102, 0); }
}

/* Mobile Sticky Action Bar */
.mobile-action-bar {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 300;
  background: rgba(5, 20, 43, 0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-top: 1px solid rgba(0, 163, 255, 0.3);
  padding: 8px 12px;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.4);
}

.mobile-action-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  max-width: 480px;
  margin: 0 auto;
}

.mobile-action-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 8px 6px;
  border-radius: var(--radius-md);
  font-size: 11.5px;
  font-weight: 700;
  color: var(--white);
  text-align: center;
  min-height: 44px;
  cursor: pointer;
  border: none;
  transition: transform 0.15s ease;
}

.mobile-action-item:active {
  transform: scale(0.96);
}

/* Footer */
.site-footer {
  background: linear-gradient(180deg, #071A36 0%, #041021 100%);
  color: var(--slate-300);
  padding: 70px 0 100px;
  border-top: 3px solid #00A3FF;
}

.footer-top-card {
  background: linear-gradient(135deg, #0B254A 0%, #071933 100%);
  border: 1px solid rgba(0, 163, 255, 0.25);
  border-radius: var(--radius-xl);
  padding: 40px;
  margin-bottom: 60px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-col h4 {
  color: var(--white);
  font-size: 13px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 16px;
  border-left: 3px solid #00A3FF;
  padding-left: 8px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 13px;
}

.footer-links a:hover {
  color: #38BDF8;
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--slate-900);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  font-size: 12px;
  color: var(--slate-500);
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }
  
  .tds-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 860px) {
  html, body {
    overflow-x: hidden;
    max-width: 100%;
  }

  .top-bar-contact {
    display: none;
  }

  .top-bar-taglines {
    font-size: 10.5px;
    gap: 4px;
    flex-wrap: wrap;
  }

  /* Prevent content hiding behind fixed mobile bottom bar */
  body {
    padding-bottom: 76px;
  }

  /* Compact sleek header on mobile */
  .nav-wrap {
    height: 68px;
  }

  .brand-logo {
    gap: 10px;
  }

  .brand-logo-img {
    height: 48px;
    max-width: 68px;
  }

  .brand-title {
    font-size: 19px;
  }

  .brand-subtitle {
    font-size: 9px;
    letter-spacing: 0.5px;
  }

  .desktop-nav, .nav-actions {
    display: none;
  }
  
  .mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: var(--radius-sm);
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(0, 163, 255, 0.3);
    color: var(--white);
    font-size: 22px;
    cursor: pointer;
  }

  .mobile-toggle:active {
    background: rgba(0, 163, 255, 0.2);
  }

  .mobile-action-bar {
    display: block;
  }
  
  .call-float-wrap {
    bottom: 78px;
    left: 14px;
  }

  .call-float-btn {
    width: 50px;
    height: 50px;
  }
  
  .whatsapp-float-wrap {
    bottom: 78px;
    right: 14px;
  }

  .whatsapp-float-btn {
    width: 50px;
    height: 50px;
  }
  
  .grid-2, .grid-3, .grid-4 {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  /* Spacing & Typography for mobile */
  .section {
    padding: 48px 0;
  }

  .section-header {
    margin-bottom: 24px;
  }
  
  .hero-section {
    padding: 32px 0 48px;
  }

  .hero-title {
    font-size: 26px;
    line-height: 1.25;
    word-break: break-word;
  }

  .hero-desc {
    font-size: 14px;
  }

  .hero-tagline-card {
    padding: 12px 16px;
  }

  .hero-tagline-en {
    font-size: 15px;
  }

  .hero-tagline-ta {
    font-size: 14px;
  }

  .hero-btns {
    flex-direction: column;
    width: 100%;
    gap: 10px;
  }

  .hero-btns .btn {
    width: 100%;
    justify-content: center;
    min-height: 46px;
    font-size: 14px;
  }

  .hero-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    padding-top: 18px;
    text-align: center;
  }

  .stat-item strong {
    font-size: 20px;
  }

  .stat-item p {
    font-size: 10px;
    line-height: 1.2;
  }

  .hero-card {
    padding: 16px;
  }

  .section-title {
    font-size: 25px;
    line-height: 1.3;
  }

  .section-subtitle {
    font-size: 11px;
  }

  /* TDS Interactive Box on Mobile */
  .tds-guide-wrapper {
    padding: 22px 16px;
    border-radius: var(--radius-lg);
  }

  .tds-result-card {
    padding: 20px 16px;
  }

  /* Comparison Table responsive touch-scrolling */
  .comparison-table-wrap {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    border-radius: var(--radius-md);
  }

  .comparison-table {
    min-width: 580px;
  }

  /* Modals on Mobile */
  .modal-overlay {
    padding: 12px;
  }

  .modal-content {
    padding: 24px 18px;
    max-height: 88vh;
    border-radius: var(--radius-lg);
  }

  .modal-close {
    top: 12px;
    right: 12px;
    width: 36px;
    height: 36px;
  }

  /* Footer on Mobile */
  .site-footer {
    padding: 48px 0 36px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-top-card {
    padding: 24px 16px;
    flex-direction: column;
    text-align: center;
    gap: 18px;
  }

  .footer-top-card .btn {
    width: 100%;
    justify-content: center;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 12px;
    padding-top: 24px;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 14px;
  }

  .top-bar {
    font-size: 11px;
    padding: 6px 0;
  }

  .top-bar-taglines {
    display: none;
  }

  .top-bar-contact {
    width: 100%;
    justify-content: space-between;
    font-size: 11px;
  }

  .brand-logo-img {
    height: 44px;
    max-width: 60px;
  }

  .brand-title {
    font-size: 17.5px;
  }

  .brand-subtitle {
    font-size: 8.5px;
  }

  .hero-title {
    font-size: 26px;
  }

  .section-title {
    font-size: 22px;
  }

  .options-pills {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    gap: 6px;
  }

  .stat-item strong {
    font-size: 19px;
  }

  .stat-item p {
    font-size: 9.5px;
  }

  .card-footer .btn {
    width: 100%;
    justify-content: center;
    min-height: 44px;
  }
}