/* AVD (Access Vertical Design) - Premium CSS Design System */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  /* Premium HSL Color System (Navy & Brushed Gold) */
  --primary: hsl(222, 47%, 12%);          /* Deep Slate Navy */
  --primary-hover: hsl(222, 47%, 18%);
  --primary-light: hsl(210, 20%, 95%);
  --primary-glow: rgba(15, 23, 42, 0.08);
  
  --secondary: hsl(215, 25%, 20%);
  --secondary-light: hsl(215, 16%, 47%);
  
  --bg-main: hsl(210, 20%, 98%);
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-footer: hsl(222, 47%, 8%);
  
  --accent-gold: hsl(38, 60%, 55%);       /* Champagne Gold */
  --accent-gold-hover: hsl(38, 60%, 46%);
  --accent-gold-light: hsl(38, 60%, 95%);
  --accent-gold-glow: rgba(212, 175, 55, 0.15);
  --accent-teal: hsl(174, 85%, 35%);
  
  --white: #ffffff;
  --gray-50: #f8f9fa;
  --gray-100: #e9ecef;
  --gray-200: #dee2e6;
  --gray-300: #ced4da;
  
  /* Borders & Shadows */
  --border-glass: 1px solid rgba(255, 255, 255, 0.4);
  --border-light: 1px solid rgba(15, 23, 42, 0.05);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  
  --shadow-sm: 0 4px 12px rgba(15, 23, 42, 0.02);
  --shadow-md: 0 10px 30px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 20px 50px rgba(15, 23, 42, 0.08);
  --shadow-inset: inset 0 2px 4px rgba(0, 0, 0, 0.02);
  
  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.25, 1, 0.5, 1);
  --transition-normal: 0.35s cubic-bezier(0.25, 1, 0.5, 1);
  --transition-slow: 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-main);
  color: var(--secondary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

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

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

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.25;
  color: var(--primary);
  letter-spacing: -0.02em;
}

/* Utility Classes */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2.5rem;
}

.text-center { text-align: center; }
.text-primary { color: var(--primary); }
.text-gold { color: var(--accent-gold); }

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 3rem; }

.section-padding {
  padding: 7.5rem 0;
}

/* Glassmorphism utility */
.glass {
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: var(--border-glass);
  box-shadow: var(--shadow-md);
}

/* Premium Button System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  padding: 0.95rem 2.25rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.925rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn-primary {
  background-color: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 14px var(--primary-glow);
  border: 1px solid var(--primary);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(15, 23, 42, 0.15);
}

.btn-secondary {
  background-color: transparent;
  color: var(--primary);
  border: 1.5px solid var(--primary);
}

.btn-secondary:hover {
  background-color: var(--primary-light);
  transform: translateY(-2px);
}

.btn-gold {
  background-color: var(--accent-gold);
  color: var(--primary);
  box-shadow: 0 4px 14px var(--accent-gold-glow);
  border: 1px solid var(--accent-gold);
}

.btn-gold:hover {
  background-color: var(--accent-gold-hover);
  color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(212, 175, 55, 0.25);
}

.btn-outline-gold {
  background-color: transparent;
  color: var(--accent-gold);
  border: 1.5px solid var(--accent-gold);
}

.btn-outline-gold:hover {
  background-color: var(--accent-gold-light);
  color: var(--primary);
  transform: translateY(-2px);
}

.btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  background: rgba(255, 255, 255, 0.15);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  transition: width 0.6s ease, height 0.6s ease;
  z-index: -1;
}

.btn:active::after {
  width: 350px;
  height: 350px;
}

/* Header & Navigation */
header.main-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 90px;
  z-index: 1000;
  transition: var(--transition-normal);
  border-bottom: 1px solid transparent;
}

header.main-header.scrolled {
  height: 70px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px) saturate(180%);
  box-shadow: var(--shadow-sm);
  border-bottom: var(--border-light);
}

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

.logo-link img {
  height: 48px;
  width: auto;
  transition: var(--transition-normal);
}

header.main-header.scrolled .logo-link img {
  height: 40px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 2.5rem;
}

.nav-links a {
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--secondary-light);
  position: relative;
  padding: 0.5rem 0;
}

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

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

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

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  border: none;
  background: none;
  cursor: pointer;
  padding: 4px;
}

.mobile-nav-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background-color: var(--secondary);
  transition: var(--transition-normal);
}

/* Hero Section */
.hero {
  position: relative;
  height: 95vh;
  min-height: 650px;
  display: flex;
  align-items: center;
  background-color: hsl(222, 47%, 8%);
  color: var(--white);
  padding-top: 90px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.92) 20%, rgba(15, 23, 42, 0.6) 60%, rgba(212, 175, 55, 0.15) 100%),
              url('../images/hero_skyline.png') no-repeat center center/cover;
  z-index: 1;
}

.hero-bg::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: radial-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 32px 32px;
  opacity: 0.8;
  z-index: 2;
  pointer-events: none;
}

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

.hero-content {
  max-width: 720px;
}

.hero-subtitle {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--accent-gold);
  margin-bottom: 1.25rem;
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  animation: slideUp 0.8s cubic-bezier(0.25, 1, 0.5, 1) forwards;
}

.hero-subtitle::before {
  content: '';
  display: inline-block;
  width: 20px;
  height: 1px;
  background-color: var(--accent-gold);
}

.hero h1 {
  font-size: 4rem;
  line-height: 1.15;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 1.5rem;
  letter-spacing: -0.03em;
  animation: slideUp 1s cubic-bezier(0.25, 1, 0.5, 1) forwards;
}

.hero h1 span.gradient-text {
  background: linear-gradient(135deg, var(--white) 30%, var(--accent-gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p.lead {
  font-size: 1.15rem;
  line-height: 1.75;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 3rem;
  animation: slideUp 1.2s cubic-bezier(0.25, 1, 0.5, 1) forwards;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1.25rem;
  animation: slideUp 1.4s cubic-bezier(0.25, 1, 0.5, 1) forwards;
}

/* Page Banner */
.page-banner {
  position: relative;
  padding: 8rem 0 5rem;
  background-color: #0d122b;
  color: var(--white);
  text-align: center;
  overflow: hidden;
}

.banner-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(rgba(13, 18, 43, 0.8), rgba(13, 18, 43, 0.85)),
              url('../images/default_banner.jpg') no-repeat center center/cover;
  z-index: 1;
  transform: scale(1.05);
  transition: var(--transition-slow);
}

.page-banner:hover .banner-bg {
  transform: scale(1);
}

.page-banner .container {
  position: relative;
  z-index: 2;
}

.page-banner h1 {
  color: var(--white);
  font-size: 3rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.breadcrumbs {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
}

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

/* Card System */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.service-card {
  padding: 3rem 2.5rem;
  border-radius: var(--radius-md);
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
  height: 100%;
  position: relative;
  border: var(--border-light);
  background: var(--white);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background-color: var(--primary);
  transform: scaleY(0);
  transform-origin: bottom;
  transition: var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.service-card:hover::before {
  transform: scaleY(1);
}

.service-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-sm);
  background-color: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2rem;
  font-size: 1.5rem;
  transition: var(--transition-normal);
}

.service-card:hover .service-icon {
  background-color: var(--primary);
  color: var(--white);
  transform: scale(1.05) rotate(5deg);
}

.service-card h3 {
  font-size: 1.35rem;
  margin-bottom: 1rem;
}

.service-card p {
  color: var(--secondary-light);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.service-card ul {
  list-style: none;
  margin-bottom: 1.5rem;
}

.service-card ul li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  color: var(--secondary);
}

.service-card ul li::before {
  content: "✓";
  position: absolute;
  left: 0;
  top: 0;
  color: var(--primary);
  font-weight: bold;
}

.read-more-link {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.read-more-link i {
  transition: var(--transition-fast);
}

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

/* Projects grid */
.filter-bar {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 3rem;
}

.filter-btn {
  padding: 0.625rem 1.5rem;
  background-color: var(--white);
  border: var(--border-light);
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

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

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2.5rem;
}

.project-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow-md);
  border: var(--border-light);
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.project-image-wrapper {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
  background-color: var(--gray-100);
}

.project-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.project-card:hover .project-image-wrapper img {
  transform: scale(1.08);
}

.project-badge {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: var(--white);
  color: var(--primary);
  padding: 0.35rem 1rem;
  border-radius: 50px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.75rem;
  box-shadow: var(--shadow-sm);
  text-transform: uppercase;
}

.project-info {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-info h3 {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
  transition: var(--transition-fast);
}

.project-card:hover .project-info h3 {
  color: var(--primary);
}

.project-meta {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 1rem;
  font-size: 0.85rem;
  color: var(--secondary-light);
  border-bottom: 1px solid var(--gray-100);
  padding-bottom: 1rem;
}

.project-meta span i {
  color: var(--primary);
  margin-right: 0.25rem;
}

.project-description {
  color: var(--secondary-light);
  font-size: 0.925rem;
  line-height: 1.5;
}

/* About Details Page */
.about-split {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 4rem;
  align-items: center;
}

.about-graphics {
  position: relative;
  display: flex;
  justify-content: center;
}

.about-img-main {
  width: 80%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  object-fit: cover;
  aspect-ratio: 4/5;
}

.about-badge-experience {
  position: absolute;
  bottom: 2rem;
  left: 2rem;
  background-color: var(--primary);
  color: var(--white);
  padding: 2rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  border: var(--border-glass);
}

.about-badge-experience span.number {
  font-family: var(--font-heading);
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
}

.about-badge-experience span.label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 500;
  margin-top: 0.25rem;
  text-align: center;
}

.about-content h6 {
  font-size: 0.9rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--primary);
  letter-spacing: 1.5px;
  margin-bottom: 0.75rem;
}

.about-content h2 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

.about-content p {
  color: var(--secondary-light);
  margin-bottom: 1.5rem;
}

/* Typology Cards on Services Page */
.typology-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin-top: 3rem;
}

.typology-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--white);
  box-shadow: var(--shadow-md);
  border: var(--border-light);
  transition: var(--transition-normal);
}

.typology-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.typology-image {
  height: 200px;
  background-color: var(--gray-100);
}

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

.typology-info {
  padding: 2rem;
}

.typology-info h4 {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}

.typology-info p {
  color: var(--secondary-light);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* Contact Page Form & Layout */
.contact-split {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
}

.contact-info-block {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-info-card {
  display: flex;
  gap: 1.5rem;
  padding: 2rem;
  border-radius: var(--radius-md);
  background: var(--white);
  box-shadow: var(--shadow-sm);
  border: var(--border-light);
  transition: var(--transition-normal);
}

.contact-info-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--primary);
}

.contact-info-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background-color: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.contact-info-text h4 {
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
}

.contact-info-text p {
  color: var(--secondary-light);
  font-size: 0.9rem;
  word-break: break-word;
}

/* Form Styling */
.contact-form-card {
  padding: 3rem;
  border-radius: var(--radius-md);
  background: var(--white);
  box-shadow: var(--shadow-lg);
  border: var(--border-light);
}

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

.form-group label {
  display: block;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
  color: var(--secondary);
}

.form-control {
  width: 100%;
  padding: 0.875rem 1.25rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--gray-200);
  background-color: var(--gray-50);
  transition: var(--transition-fast);
  color: var(--secondary);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  background-color: var(--white);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

textarea.form-control {
  resize: vertical;
  min-height: 150px;
}

/* Custom interactive map placeholder */
.map-container {
  height: 450px;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-top: 4rem;
  box-shadow: var(--shadow-md);
  border: var(--border-light);
}

.map-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, hsl(210, 20%, 94%) 0%, hsl(210, 10%, 88%) 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
  position: relative;
}

.map-pin {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background-color: var(--primary);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: 0 0 0 10px rgba(56, 87, 241, 0.2);
  margin-bottom: 1.5rem;
  animation: pulse 2s infinite;
}

/* Footer Section */
footer.main-footer {
  background-color: var(--bg-footer);
  color: #c5cdd9;
  padding: 5rem 0 2rem;
  font-size: 0.9rem;
  border-top: 4px solid var(--primary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr 1fr;
  gap: 4rem;
  margin-bottom: 4rem;
}

.footer-col h4 {
  color: var(--white);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1.75rem;
  position: relative;
  padding-bottom: 0.75rem;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background-color: var(--primary);
}

.footer-col p {
  line-height: 1.7;
}

.footer-logo {
  height: 45px;
  width: auto;
  margin-bottom: 1.5rem;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: var(--white);
  padding-left: 6px;
}

.footer-contact-list {
  list-style: none;
}

.footer-contact-list li {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
}

.footer-contact-list li i {
  color: var(--primary);
  margin-top: 0.25rem;
}

.footer-social-icons {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

.social-icon {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-sm);
  background-color: rgba(255, 255, 255, 0.05);
  color: #c5cdd9;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition-normal);
}

.social-icon:hover {
  background-color: var(--primary);
  color: var(--white);
  transform: translateY(-3px);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.8rem;
  color: #8c9ba5;
}

/* Animations */
@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(56, 87, 241, 0.4);
  }
  70% {
    box-shadow: 0 0 0 15px rgba(56, 87, 241, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(56, 87, 241, 0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* Responsive Breakpoints */
@media (max-width: 1024px) {
  .about-split,
  .contact-split {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  .about-img-main {
    width: 60%;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none; /* JS will toggle active class */
    position: fixed;
    top: 80px;
    left: 0;
    width: 100%;
    background: var(--white);
    flex-direction: column;
    padding: 2.5rem;
    gap: 1.5rem;
    box-shadow: var(--shadow-md);
    border-top: var(--border-light);
    z-index: 999;
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .mobile-nav-toggle {
    display: flex;
  }
  
  .mobile-nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
  }
  
  .mobile-nav-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .mobile-nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -6px);
  }
  
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  
  .section-padding {
    padding: 4rem 0;
  }
  
  .contact-form-card {
    padding: 2rem;
  }
}

/* Service Card Images & Premium Enhancements */
.service-card-image {
  width: 100%;
  aspect-ratio: 16/9;
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: 1.5rem;
  background-color: var(--gray-100);
}

.service-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-slow);
}

.service-card:hover .service-card-image img {
  transform: scale(1.08);
}

/* Premium Layout & Decorative Components */

/* Architectural Grid Overlay & Geometric Decors */
.grid-bg-decor {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background-image: radial-gradient(var(--accent-gold-glow) 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: 0.4;
  pointer-events: none;
}

/* Floating Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255, 255, 255, 0.6);
  font-family: var(--font-heading);
  font-size: 0.75rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  z-index: 3;
  animation: bounce 2s infinite;
}

.scroll-indicator i {
  font-size: 1rem;
  color: var(--accent-gold);
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translate(-50%, 0);
  }
  40% {
    transform: translate(-50%, -10px);
  }
  60% {
    transform: translate(-50%, -5px);
  }
}

/* Floating Stats Bar */
.stats-floating-bar {
  margin-top: -80px;
  position: relative;
  z-index: 10;
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: 0 15px 40px rgba(15, 23, 42, 0.08);
  border: 1px solid rgba(15, 23, 42, 0.04);
  padding: 3rem 2rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  align-items: center;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 0.5rem 1.5rem;
}

.stat-item:not(:last-child) {
  border-right: 1.5px solid var(--gray-100);
}

.stat-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background-color: var(--accent-gold-light);
  color: var(--accent-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  flex-shrink: 0;
  box-shadow: 0 4px 10px rgba(212, 175, 55, 0.1);
}

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

.stat-number {
  font-family: var(--font-heading);
  font-size: 2.5rem;
  font-weight: 800;
  line-height: 1;
  color: var(--primary);
  letter-spacing: -0.02em;
}

.stat-label {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--secondary-light);
  margin-top: 0.35rem;
}

/* Asymmetrical Overlapping Image Stack (Welcome) */
.about-image-stack {
  position: relative;
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  align-items: center;
  width: 100%;
}

.about-img-back {
  grid-column: 1 / span 9;
  grid-row: 1;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  border: 4px solid var(--white);
  z-index: 1;
  aspect-ratio: 4/3;
  object-fit: cover;
}

.about-img-front {
  grid-column: 5 / span 8;
  grid-row: 1;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  border: 6px solid var(--white);
  z-index: 2;
  transform: translateY(35px);
  aspect-ratio: 4/3;
  object-fit: cover;
}

.about-experience-stamp {
  position: absolute;
  bottom: -20px;
  left: 20px;
  background-color: var(--accent-gold);
  color: var(--primary);
  padding: 1.75rem;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 25px rgba(212, 175, 55, 0.3);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 3;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.about-experience-stamp .num {
  font-family: var(--font-heading);
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1;
}

.about-experience-stamp .lbl {
  font-size: 0.725rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  font-weight: 700;
  margin-top: 0.25rem;
  text-align: center;
  line-height: 1.2;
}

/* Brand Promise Highlights Box */
.brand-promise-box {
  border-left: 3px solid var(--accent-gold);
  padding-left: 1.5rem;
  margin-bottom: 2rem;
}

.brand-promise-box h4 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--primary);
}

.brand-promise-box p {
  color: var(--secondary-light);
  font-size: 0.95rem;
  margin: 0;
}

/* Partner Logo Marquee Logocloud */
.partner-marquee-section {
  padding: 4.5rem 0;
  border-top: 1.5px solid var(--gray-100);
  border-bottom: 1.5px solid var(--gray-100);
  background: var(--white);
  overflow: hidden;
}

.marquee-container {
  display: flex;
  overflow: hidden;
  user-select: none;
  gap: 5rem;
}

.marquee-content {
  flex-shrink: 0;
  display: flex;
  justify-content: space-around;
  min-width: 100%;
  gap: 5rem;
  animation: scroll-marquee 25s linear infinite;
}

@keyframes scroll-marquee {
  from { transform: translateX(0); }
  to { transform: translateX(-100%); }
}

.partner-logo {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--secondary-light);
  opacity: 0.45;
  letter-spacing: 3px;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition-fast);
}

.partner-logo:hover {
  opacity: 0.95;
  color: var(--accent-gold);
}

/* Service Card Hover-Glow Accent Line */
.service-card {
  position: relative;
  z-index: 1;
}

.service-card::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-gold), var(--primary));
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition-normal);
  z-index: 2;
}

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

.service-card ul {
  list-style: none;
  margin: 1.5rem 0;
}

.service-card ul li {
  position: relative;
  padding-left: 1.75rem;
  margin-bottom: 0.75rem;
  font-size: 0.95rem;
  color: var(--secondary-light);
}

.service-card ul li i.bullet-check {
  position: absolute;
  left: 0;
  top: 4px;
  color: var(--accent-gold);
  font-size: 0.9rem;
}

/* Landmark Projects Upgrades */
.project-card-footer {
  margin-top: auto;
  border-top: 1.5px solid var(--gray-100);
  padding-top: 1.25rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.project-read-more {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--primary);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: var(--transition-fast);
}

.project-card:hover .project-read-more {
  color: var(--accent-gold);
}

.project-card:hover .project-read-more i {
  transform: translateX(4px);
}

/* Testimonial Quote Section */
.testimonial-section {
  padding: 7.5rem 0;
  background-color: var(--white);
  position: relative;
  overflow: hidden;
}

.testimonial-card {
  max-width: 850px;
  margin: 0 auto;
  background: var(--gray-50);
  border-radius: var(--radius-md);
  padding: 3.5rem;
  position: relative;
  box-shadow: 0 10px 35px rgba(15, 23, 42, 0.03);
  border: 1px solid rgba(15, 23, 42, 0.03);
}

.testimonial-quote-icon {
  position: absolute;
  top: -24px;
  left: 50px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--accent-gold);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  box-shadow: 0 4px 12px rgba(212, 175, 55, 0.25);
}

.testimonial-text {
  font-family: var(--font-body);
  font-size: 1.2rem;
  line-height: 1.75;
  color: var(--secondary);
  font-style: italic;
  margin-bottom: 2.25rem;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.testimonial-author-avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  background-color: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.15rem;
  box-shadow: var(--shadow-sm);
}

.testimonial-author-info h4 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.15rem;
}

.testimonial-author-info p {
  font-size: 0.75rem;
  color: var(--secondary-light);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
}

/* Immersive Premium CTA Section */
.cta-premium {
  position: relative;
  background: radial-gradient(circle at top right, hsl(222, 47%, 18%) 0%, hsl(222, 47%, 8%) 100%);
  color: var(--white);
  overflow: hidden;
  padding: 8.5rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.cta-premium::before {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background-image: radial-gradient(rgba(212, 175, 55, 0.04) 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: 0.8;
  pointer-events: none;
}

.cta-premium .container {
  position: relative;
  z-index: 3;
}

/* Footer Section Hover Enhancements */
.footer-links a {
  display: inline-block;
  transition: var(--transition-fast);
}

.footer-links a:hover {
  color: var(--accent-gold);
  transform: translateX(4px);
}

.footer-contact-list li a:hover {
  color: var(--accent-gold);
}

/* Responsive Overrides for New Components */
@media (max-width: 1024px) {
  .about-image-stack {
    margin-bottom: 3.5rem;
  }
}

@media (max-width: 768px) {
  .stats-floating-bar {
    margin-top: -40px;
    padding: 2.25rem 1.5rem;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }
  
  .stat-item {
    padding: 0;
    justify-content: flex-start;
  }
  
  .stat-item:not(:last-child) {
    border-right: none;
    border-bottom: 1.5px solid var(--gray-100);
    padding-bottom: 1.5rem;
  }
  
  .about-experience-stamp {
    bottom: -10px;
    left: 10px;
    padding: 1.25rem;
  }
  
  .about-experience-stamp .num {
    font-size: 2.25rem;
  }
  
  .testimonial-card {
    padding: 2.5rem 1.75rem;
  }
  
  .testimonial-text {
    font-size: 1.05rem;
  }
  
  .cta-premium {
    padding: 6rem 0;
  }
}

/* Engineering Consultancy Process Timeline */
.process-timeline-section {
  position: relative;
  background-color: var(--white);
  padding: 8.5rem 0;
}

.timeline-container {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
  position: relative;
  margin-top: 6rem;
}

.timeline-container::before {
  content: '';
  position: absolute;
  top: 40px;
  left: 10%;
  width: 80%;
  height: 2px;
  background: repeating-linear-gradient(to right, var(--gray-200), var(--gray-200) 8px, transparent 8px, transparent 16px);
  z-index: 1;
}

.timeline-step {
  position: relative;
  z-index: 2;
  text-align: center;
  background: var(--gray-50);
  border-radius: var(--radius-md);
  padding: 3rem 2rem 2.5rem;
  border: 1px solid rgba(15, 23, 42, 0.03);
  box-shadow: 0 4px 15px rgba(15, 23, 42, 0.01);
  transition: var(--transition-normal);
}

.timeline-step:hover {
  transform: translateY(-6px);
  background: var(--white);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent-gold-glow);
}

.timeline-number {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  background-color: var(--primary);
  color: var(--accent-gold);
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: -5.25rem auto 2rem;
  border: 4px solid var(--white);
  box-shadow: var(--shadow-md);
  transition: var(--transition-normal);
}

.timeline-step:hover .timeline-number {
  background-color: var(--accent-gold);
  color: var(--primary);
  transform: scale(1.05);
}

.timeline-step h3 {
  font-size: 1.25rem;
  margin-bottom: 1rem;
  color: var(--primary);
}

.timeline-step p {
  font-size: 0.925rem;
  color: var(--secondary-light);
  line-height: 1.6;
}

/* Compliance & Standards Matrix */
.compliance-section {
  padding: 8.5rem 0;
  background-color: var(--white);
  border-top: 1.5px solid var(--gray-100);
}

.standards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  margin-top: 4rem;
}

.standard-card {
  background: var(--gray-50);
  border: 1px solid rgba(15, 23, 42, 0.03);
  border-radius: var(--radius-md);
  padding: 2.5rem 2rem;
  text-align: center;
  transition: var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.standard-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; width: 100%; height: 3px;
  background-color: var(--gray-200);
  transition: var(--transition-fast);
}

.standard-card:hover {
  transform: translateY(-4px);
  background: var(--white);
  box-shadow: var(--shadow-md);
}

.standard-card:hover::before {
  background-color: var(--accent-gold);
}

.standard-icon {
  font-size: 2.25rem;
  color: var(--primary);
  margin-bottom: 1.5rem;
  opacity: 0.8;
  transition: var(--transition-fast);
}

.standard-card:hover .standard-icon {
  color: var(--accent-gold);
  opacity: 1;
}

.standard-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--primary);
}

.standard-card p {
  font-size: 0.85rem;
  color: var(--secondary-light);
  line-height: 1.5;
  margin: 0;
}

/* Interactive FAQ Accordion */
.faq-section {
  padding: 8.5rem 0;
  background-color: var(--gray-50);
  border-top: 1.5px solid var(--gray-100);
}

.faq-container {
  max-width: 850px;
  margin: 4rem auto 0;
}

.faq-item {
  background: var(--white);
  border-radius: var(--radius-sm);
  margin-bottom: 1.25rem;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.01);
  border: 1px solid rgba(15, 23, 42, 0.03);
  overflow: hidden;
  transition: var(--transition-normal);
}

.faq-item.active {
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.04);
  border-color: rgba(212, 175, 55, 0.2);
}

.faq-trigger {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2rem;
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--primary);
  transition: var(--transition-fast);
}

.faq-trigger:focus {
  outline: none;
}

.faq-trigger:hover {
  color: var(--accent-gold);
}

.faq-icon-box {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background-color: var(--primary-light);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  transition: var(--transition-normal);
  flex-shrink: 0;
}

.faq-item.active .faq-icon-box {
  background-color: var(--accent-gold);
  color: var(--primary);
  transform: rotate(45deg);
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

.faq-content-inner {
  padding: 0 2rem 1.75rem;
  font-size: 0.95rem;
  color: var(--secondary-light);
  line-height: 1.7;
}

/* Responsive timeline and FAQ overrides */
@media (max-width: 992px) {
  .timeline-container {
    grid-template-columns: 1fr;
    gap: 5rem;
    margin-top: 6rem;
  }
  .timeline-container::before {
    display: none;
  }
  .timeline-number {
    margin-top: -5rem;
  }
}

/* Floating Mobile Quick-Contact Bar (Call & WhatsApp) */
.mobile-contact-bar {
  position: fixed;
  bottom: 24px;
  left: 20px;
  right: 20px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-radius: 50px;
  box-shadow: 0 12px 40px rgba(15, 23, 42, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.4);
  display: none; /* Hidden on desktop viewports */
  justify-content: space-between;
  padding: 8px;
  gap: 10px;
  z-index: 9999;
  animation: slideUpContact 0.6s cubic-bezier(0.25, 1, 0.5, 1) forwards;
}

@keyframes slideUpContact {
  from {
    transform: translateY(120px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.mobile-contact-btn {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 16px;
  border-radius: 50px;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--white);
  transition: var(--transition-normal);
}

.mobile-contact-btn.btn-call {
  background-color: var(--primary);
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.15);
  border: 1px solid var(--primary);
}

.mobile-contact-btn.btn-call:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
}

.mobile-contact-btn.btn-whatsapp {
  background-color: #25D366; /* Official WhatsApp Green */
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.25);
  border: 1px solid #25D366;
}

.mobile-contact-btn.btn-whatsapp:hover {
  background-color: #20ba56;
  transform: translateY(-2px);
}

/* Make visible only on mobile viewports */
@media (max-width: 768px) {
  .mobile-contact-bar {
    display: flex;
  }
  
  /* Prevent contact bar from covering content at the bottom of the body (e.g., footer details) */
  body {
    padding-bottom: 96px;
  }
}