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

/* --- CUSTOM PROPERTIES (DESIGN SYSTEM) --- */
:root {
  --color-primary: #0B1F3A;        /* Deep Navy Blue */
  --color-primary-rgb: 11, 31, 58;
  --color-secondary: #D4AF37;      /* Royal Gold */
  --color-secondary-hover: #C5A02E;
  --color-accent: #C0C0C0;         /* Platinum Silver */
  --color-bg-light: #FFFFFF;
  --color-bg-alt: #F8FAFC;         /* Soft Light Slate */
  --color-bg-dark: #060C14;        /* Dark Obsidian */
  --color-bg-dark-alt: #0D1622;    /* Lighter Dark Navy */
  --color-text-dark: #1E293B;      /* Dark Charcoal Slate */
  --color-text-muted: #64748B;     /* Cool Gray */
  --color-text-light: #F8FAFC;     /* Off-White */
  --color-text-light-muted: #94A3B8;
  
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;

  --transition-smooth: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-fast: all 0.25s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-slow: all 0.8s cubic-bezier(0.16, 1, 0.3, 1);
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 10px 30px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.12);
  --shadow-gold: 0 8px 24px rgba(212, 175, 55, 0.15);
  
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 16px;
  --border-radius-full: 9999px;
  
  --max-width: 1400px;
}

/* --- RESET & BASE STYLES --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  color: var(--color-text-dark);
  background-color: var(--color-bg-light);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.25;
  color: var(--color-primary);
}

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

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

/* --- CUSTOM SCROLLBAR --- */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-dark);
}

::-webkit-scrollbar-thumb {
  background: var(--color-secondary);
  border-radius: var(--border-radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-secondary-hover);
}

/* --- PRELOADER ANIMATION --- */
.preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: var(--color-bg-dark);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.8s;
}

.preloader.fade-out {
  opacity: 0;
  visibility: hidden;
}

.preloader-logo {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 2rem;
  color: var(--color-text-light);
  letter-spacing: 0.15em;
  margin-bottom: 20px;
}

.preloader-logo span {
  color: var(--color-secondary);
}

.preloader-bar {
  width: 200px;
  height: 2px;
  background: rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
  border-radius: var(--border-radius-full);
}

.preloader-progress {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 0;
  background-color: var(--color-secondary);
  animation: load 2.5s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes load {
  0% { width: 0; }
  100% { width: 100%; }
}

/* --- UTILITY CLASSES --- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem;
}

.section-padding {
  padding: 8rem 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 5rem auto;
}

.section-header .subtitle {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--color-secondary);
  margin-bottom: 1rem;
  display: block;
}

.section-header h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.section-header p {
  color: var(--color-text-muted);
  font-size: 1.125rem;
}

/* Text styles for dark backgrounds */
.dark-theme-header h2 {
  color: var(--color-text-light);
}
.dark-theme-header p {
  color: var(--color-text-light-muted);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  padding: 1.25rem 2.5rem;
  border-radius: var(--border-radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn-primary {
  background-color: var(--color-secondary);
  color: var(--color-primary);
  box-shadow: var(--shadow-gold);
}

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

.btn-secondary {
  background-color: transparent;
  border-color: rgba(255, 255, 255, 0.3);
  color: var(--color-text-light);
}

.btn-secondary:hover {
  border-color: var(--color-secondary);
  background-color: rgba(212, 175, 55, 0.05);
  color: var(--color-secondary);
  transform: translateY(-2px);
}

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

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

/* Scroll-triggered reveal effect */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: var(--transition-slow);
}

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

.reveal-delay-1 { transition-delay: 0.15s; }
.reveal-delay-2 { transition-delay: 0.3s; }
.reveal-delay-3 { transition-delay: 0.45s; }

/* --- HEADER / NAVIGATION --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  transition: var(--transition-smooth);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.header.sticky {
  background-color: rgba(6, 12, 20, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-md);
  border-bottom: 1px solid rgba(212, 175, 55, 0.2);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 90px;
  transition: var(--transition-smooth);
}

.header.sticky .header-container {
  height: 75px;
}

.logo {
  display: flex;
  flex-direction: column;
}

.logo-main {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: 0.1em;
  color: var(--color-text-light);
  line-height: 1.1;
}

.logo-main span {
  color: var(--color-secondary);
}

.logo-sub {
  font-family: var(--font-heading);
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--color-text-light-muted);
}

.nav {
  display: flex;
  align-items: center;
  gap: 3rem;
}

.nav-link {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text-light);
  position: relative;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-secondary);
  transition: var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-secondary);
}

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

.nav-link.active {
  color: var(--color-secondary);
}

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

.header-cta {
  display: inline-flex;
}

.header-cta .btn {
  padding: 0.75rem 1.5rem;
  font-size: 0.75rem;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.hamburger-line {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text-light);
  margin: 5px 0;
  transition: var(--transition-fast);
}

/* --- HERO SECTION --- */
.hero {
  position: relative;
  height: 100vh;
  min-height: 700px;
  background-color: var(--color-bg-dark);
  overflow: hidden;
  display: flex;
  align-items: center;
  color: var(--color-text-light);
}

/* Cinematic Background with Parallax support */
.hero-bg-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  overflow: hidden;
}

.hero-bg {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.45;
  transform: scale(1.05);
  animation: slowZoom 20s ease-out infinite alternate;
}

/* Optional CSS native scroll-driven parallax for modern browsers */
@supports ((animation-timeline: view()) and (animation-range: entry)) {
  .hero {
    view-timeline: --hero-timeline;
  }
  .hero-bg {
    animation: none;
    animation: nativeParallax linear both;
    animation-timeline: --hero-timeline;
    animation-range: exit 0% exit 100%;
  }
}

@keyframes nativeParallax {
  to {
    transform: translateY(150px) scale(1.1);
  }
}

@keyframes slowZoom {
  0% { transform: scale(1.02) translateY(0); }
  100% { transform: scale(1.08) translateY(-10px); }
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to bottom,
    rgba(6, 12, 20, 0.8) 0%,
    rgba(11, 31, 58, 0.4) 50%,
    rgba(6, 12, 20, 0.95) 100%
  );
  z-index: 2;
}

.hero-container {
  position: relative;
  z-index: 3;
  width: 100%;
  margin-top: 50px;
}

.hero-content {
  max-width: 850px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  border-left: 2px solid var(--color-secondary);
  padding-left: 1rem;
  margin-bottom: 2rem;
  opacity: 0;
  transform: translateX(-20px);
  animation: slideRight 1s cubic-bezier(0.16, 1, 0.3, 1) forwards 0.5s;
}

.hero-badge-text {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: var(--color-secondary);
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--color-text-light);
  margin-bottom: 2rem;
  opacity: 0;
  transform: translateY(30px);
  animation: slideUp 1.2s cubic-bezier(0.16, 1, 0.3, 1) forwards 0.7s;
}

.hero-subheadline {
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 300;
  color: var(--color-text-light-muted);
  max-width: 650px;
  margin-bottom: 3.5rem;
  opacity: 0;
  transform: translateY(30px);
  animation: slideUp 1.2s cubic-bezier(0.16, 1, 0.3, 1) forwards 0.9s;
}

.hero-actions {
  display: flex;
  gap: 1.5rem;
  opacity: 0;
  transform: translateY(30px);
  animation: slideUp 1.2s cubic-bezier(0.16, 1, 0.3, 1) forwards 1.1s;
}

@keyframes slideUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideRight {
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* --- ABOUT SECTION --- */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 6rem;
  align-items: center;
}

.about-image-wrapper {
  position: relative;
  border: 1px solid rgba(11, 31, 58, 0.08);
  padding: 1.5rem;
  background-color: var(--color-bg-light);
}

.about-image-wrapper::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100px;
  height: 100px;
  border-top: 2px solid var(--color-secondary);
  border-left: 2px solid var(--color-secondary);
}

.about-image-wrapper::after {
  content: '';
  position: absolute;
  bottom: 0;
  right: 0;
  width: 100px;
  height: 100px;
  border-bottom: 2px solid var(--color-secondary);
  border-right: 2px solid var(--color-secondary);
}

.about-img {
  width: 100%;
  height: 520px;
  object-fit: cover;
  box-shadow: var(--shadow-lg);
  filter: grayscale(10%) contrast(105%);
}

.about-heading {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--color-secondary);
  margin-bottom: 1rem;
  display: block;
}

.about h3 {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 2rem;
}

.about-text {
  color: var(--color-text-muted);
  font-size: 1.0625rem;
  margin-bottom: 3rem;
  font-weight: 300;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 3rem 2rem;
}

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

.stat-number {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: 0.5rem;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
}

.stat-number span {
  color: var(--color-secondary);
}

.stat-label {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text-muted);
  font-weight: 600;
}

/* --- SERVICES SECTION --- */
.services {
  background-color: var(--color-bg-alt);
}

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

.service-card {
  background-color: var(--color-bg-light);
  border: 1px solid rgba(11, 31, 58, 0.05);
  padding: 3.5rem 3rem;
  border-radius: var(--border-radius-sm);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 100%;
}

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

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(11, 31, 58, 0.1);
}

.service-card:hover::before {
  transform: scaleX(1);
  background: linear-gradient(to right, var(--color-primary), var(--color-secondary));
}

.service-icon {
  margin-bottom: 2.5rem;
  width: 54px;
  height: 54px;
  color: var(--color-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius-sm);
  background-color: rgba(212, 175, 55, 0.06);
  transition: var(--transition-smooth);
}

.service-card:hover .service-icon {
  background-color: var(--color-primary);
  color: var(--color-secondary);
}

.service-card h3 {
  font-size: 1.375rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

.service-card p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  font-weight: 300;
  margin-bottom: 2rem;
  flex-grow: 1;
}

.service-link {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
}

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

.service-card:hover .service-link {
  color: var(--color-secondary);
}

.service-card:hover .service-link svg {
  transform: translateX(5px);
}

/* --- MEGA PROJECTS SHOWCASE --- */
.projects {
  padding-bottom: 0; /* Align perfectly with full-width cards */
}

.projects-filter {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 4rem;
  flex-wrap: wrap;
}

.filter-btn {
  background: none;
  border: none;
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 0.5rem 1rem;
  transition: var(--transition-fast);
  position: relative;
}

.filter-btn::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background-color: var(--color-secondary);
  transition: var(--transition-fast);
  transform: translateX(-50%);
}

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

.filter-btn.active {
  color: var(--color-primary);
}

.filter-btn.active::after {
  width: 60%;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  width: 100%;
}

/* Custom 100% width layout for projects section background to be premium */
.projects-container-fluid {
  width: 100%;
  padding: 0;
}

.project-card {
  position: relative;
  height: 520px;
  overflow: hidden;
  cursor: pointer;
}

.project-img-wrapper {
  width: 100%;
  height: 100%;
  overflow: hidden;
  position: relative;
}

.project-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.2s cubic-bezier(0.16, 1, 0.3, 1);
  filter: contrast(105%) brightness(95%);
}

.project-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    to bottom,
    rgba(6, 12, 20, 0) 20%,
    rgba(6, 12, 20, 0.4) 50%,
    rgba(6, 12, 20, 0.95) 100%
  );
  z-index: 2;
  transition: var(--transition-smooth);
}

.project-content {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: 4rem;
  z-index: 3;
  color: var(--color-text-light);
  transform: translateY(20px);
  transition: transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.project-category {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--color-secondary);
  margin-bottom: 0.75rem;
  display: block;
}

.project-card h3 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-text-light);
  margin-bottom: 1rem;
  letter-spacing: -0.01em;
}

.project-details {
  display: flex;
  gap: 3rem;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s cubic-bezier(0.16, 1, 0.3, 1), transform 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

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

.detail-label {
  font-family: var(--font-heading);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text-light-muted);
  margin-bottom: 0.25rem;
}

.detail-val {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text-light);
}

/* Hover States */
.project-card:hover .project-img {
  transform: scale(1.06);
}

.project-card:hover .project-overlay {
  background: linear-gradient(
    to bottom,
    rgba(6, 12, 20, 0.1) 0%,
    rgba(6, 12, 20, 0.5) 40%,
    rgba(6, 12, 20, 0.98) 100%
  );
}

.project-card:hover .project-content {
  transform: translateY(0);
}

.project-card:hover .project-details {
  opacity: 1;
  transform: translateY(0);
  transition-delay: 0.1s;
}

/* --- WHY CHOOSE US --- */
.why-choose {
  background-color: var(--color-bg-light);
}

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

.why-card {
  padding: 3rem 2.5rem;
  border-left: 1px solid rgba(11, 31, 58, 0.08);
  transition: var(--transition-smooth);
}

.why-card:hover {
  border-left-color: var(--color-secondary);
  background-color: var(--color-bg-alt);
  transform: translateX(5px);
}

.why-icon {
  width: 48px;
  height: 48px;
  color: var(--color-primary);
  margin-bottom: 2rem;
}

.why-card:hover .why-icon {
  color: var(--color-secondary);
}

.why-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.why-card p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  font-weight: 300;
}

/* --- VISION & MISSION (DARK LAYER) --- */
.vision-mission {
  background-color: var(--color-bg-dark);
  color: var(--color-text-light);
  position: relative;
  overflow: hidden;
}

.vision-mission-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.04;
  background-image: radial-gradient(var(--color-accent) 1px, transparent 1px);
  background-size: 24px 24px;
}

.vision-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8rem;
  position: relative;
  z-index: 2;
}

.vision-box, .mission-box {
  display: flex;
  flex-direction: column;
}

.vision-box::before, .mission-box::before {
  content: '“';
  font-family: var(--font-heading);
  font-size: 8rem;
  line-height: 1;
  color: var(--color-secondary);
  opacity: 0.15;
  height: 50px;
  margin-bottom: -1rem;
  margin-left: -0.5rem;
}

.vision-box h3, .mission-box h3 {
  font-size: 2.25rem;
  font-weight: 700;
  color: var(--color-text-light);
  margin-bottom: 1.5rem;
  position: relative;
}

.vision-box h3::after, .mission-box h3::after {
  content: '';
  position: absolute;
  bottom: -0.5rem;
  left: 0;
  width: 40px;
  height: 2px;
  background-color: var(--color-secondary);
}

.vision-box p, .mission-box p {
  font-size: 1.1875rem;
  color: var(--color-text-light-muted);
  line-height: 1.7;
  font-weight: 300;
}

/* --- LEADERSHIP SECTION --- */
.leadership {
  background-color: var(--color-bg-alt);
}

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

.leader-card {
  background-color: var(--color-bg-light);
  box-shadow: var(--shadow-sm);
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  border: 1px solid rgba(11, 31, 58, 0.05);
  transition: var(--transition-smooth);
}

.leader-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(11, 31, 58, 0.1);
}

.leader-img-wrapper {
  position: relative;
  height: 380px;
  overflow: hidden;
  background-color: var(--color-primary);
}

.leader-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(30%) contrast(105%);
  transition: var(--transition-smooth);
}

.leader-card:hover .leader-img {
  filter: grayscale(0%) contrast(100%);
  transform: scale(1.03);
}

.leader-info {
  padding: 2.5rem;
  text-align: center;
}

.leader-info h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.leader-title {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--color-secondary);
  display: block;
}

/* --- ACHIEVEMENTS SECTION --- */
.achievements {
  background: linear-gradient(rgba(11, 31, 58, 0.95), rgba(6, 12, 20, 0.98)),
              url('assets/images/highway-expressway.png') center/cover fixed;
  color: var(--color-text-light);
  text-align: center;
}

.achievements-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 3rem;
}

.achieve-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.achieve-icon {
  width: 48px;
  height: 48px;
  color: var(--color-secondary);
  margin-bottom: 1.5rem;
}

.achieve-number {
  font-family: var(--font-heading);
  font-size: 3.5rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 0.75rem;
  letter-spacing: -0.02em;
}

.achieve-label {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--color-text-light-muted);
  font-weight: 600;
}

/* --- CLIENT TESTIMONIALS --- */
.testimonials-carousel-wrapper {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
  overflow: hidden;
}

.testimonials-carousel {
  display: flex;
  scroll-snap-type: x mandatory;
  overflow-x: auto;
  scrollbar-width: none; /* Firefox */
  scroll-behavior: smooth;
}

.testimonials-carousel::-webkit-scrollbar {
  display: none; /* Safari/Chrome */
}

.testimonial-slide {
  min-width: 100%;
  scroll-snap-align: start;
  padding: 0 4rem;
  text-align: center;
  box-sizing: border-box;
}

.quote-icon {
  width: 50px;
  height: 50px;
  color: var(--color-secondary);
  opacity: 0.25;
  margin: 0 auto 2.5rem auto;
}

.quote-text {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  font-weight: 300;
  line-height: 1.7;
  color: var(--color-text-dark);
  margin-bottom: 2.5rem;
  font-style: italic;
}

.quote-author {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.quote-author-title {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.20em;
  color: var(--color-secondary);
}

.carousel-nav {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.5rem;
  margin-top: 4rem;
}

.carousel-btn {
  background: none;
  border: 1px solid rgba(11, 31, 58, 0.15);
  width: 44px;
  height: 44px;
  border-radius: var(--border-radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-primary);
  transition: var(--transition-fast);
}

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

.carousel-dots {
  display: flex;
  gap: 0.75rem;
}

.dot {
  width: 6px;
  height: 6px;
  border-radius: var(--border-radius-full);
  background-color: rgba(11, 31, 58, 0.2);
  cursor: pointer;
  transition: var(--transition-fast);
}

.dot.active {
  background-color: var(--color-secondary);
  transform: scale(1.5);
}

/* --- CSR & SUSTAINABILITY --- */
.csr {
  background-color: var(--color-bg-alt);
}

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

.csr-card {
  background-color: var(--color-bg-light);
  border: 1px solid rgba(11, 31, 58, 0.05);
  border-radius: var(--border-radius-sm);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
}

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

.csr-img-wrapper {
  height: 240px;
  overflow: hidden;
}

.csr-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

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

.csr-content {
  padding: 2.5rem;
}

.csr-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.csr-card p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  font-weight: 300;
}

/* --- CONTACT SECTION --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 6rem;
}

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

.contact-subtitle {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.25em;
  color: var(--color-secondary);
  margin-bottom: 1rem;
  display: block;
}

.contact-info h3 {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 2rem;
}

.contact-desc {
  color: var(--color-text-muted);
  font-size: 1.0625rem;
  margin-bottom: 3.5rem;
  font-weight: 300;
}

.contact-details-list {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.contact-detail-item {
  display: flex;
  gap: 1.5rem;
}

.contact-detail-icon {
  width: 24px;
  height: 24px;
  color: var(--color-secondary);
  flex-shrink: 0;
  margin-top: 0.25rem;
}

.contact-detail-content h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.contact-detail-content p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  font-weight: 300;
}

/* Luxury Map Box */
.map-box {
  margin-top: 3.5rem;
  height: 220px;
  background-color: var(--color-bg-dark);
  border-radius: var(--border-radius-sm);
  border: 1px solid rgba(212, 175, 55, 0.15);
  position: relative;
  overflow: hidden;
}

.map-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 2rem;
  background-image: radial-gradient(rgba(212, 175, 55, 0.15) 1px, transparent 1px);
  background-size: 16px 16px;
}

.map-logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-text-light);
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}

.map-logo span {
  color: var(--color-secondary);
}

.map-location-tag {
  font-size: 0.8125rem;
  color: var(--color-text-light-muted);
  margin-bottom: 1.5rem;
}

.map-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.75rem 1.5rem;
  background-color: transparent;
  border: 1px solid var(--color-secondary);
  color: var(--color-secondary);
  cursor: pointer;
  transition: var(--transition-fast);
  border-radius: var(--border-radius-sm);
}

.map-btn:hover {
  background-color: var(--color-secondary);
  color: var(--color-primary);
}

/* Contact Form */
.contact-form-wrapper {
  background-color: var(--color-bg-alt);
  padding: 4.5rem;
  border-radius: var(--border-radius-sm);
  box-shadow: var(--shadow-sm);
  border: 1px solid rgba(11, 31, 58, 0.03);
}

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

.form-group {
  position: relative;
  display: flex;
  flex-direction: column;
}

.form-input {
  width: 100%;
  padding: 1.25rem 0 0.5rem 0;
  background-color: transparent;
  border: none;
  border-bottom: 1px solid rgba(11, 31, 58, 0.15);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text-dark);
  outline: none;
  transition: var(--transition-fast);
}

.form-label {
  position: absolute;
  top: 1.25rem;
  left: 0;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  pointer-events: none;
  transition: var(--transition-fast);
}

/* Floating labels */
.form-input:focus ~ .form-label,
.form-input:not(:placeholder-shown) ~ .form-label {
  top: 0;
  font-size: 0.75rem;
  color: var(--color-secondary);
  font-weight: 600;
}

.form-input:focus {
  border-bottom-color: var(--color-secondary);
}

/* Form Validation Indicators using :user-valid */
.form-input:focus:invalid {
  border-bottom-color: #E2E8F0;
}

.form-input:user-valid {
  border-bottom-color: var(--color-secondary);
}

.form-input:user-invalid {
  border-bottom-color: #EF4444;
}

.form-select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right center;
  background-size: 16px 16px;
  padding-right: 2rem;
}

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

.contact-form .btn {
  width: 100%;
  margin-top: 1rem;
}

/* --- FOOTER --- */
.footer {
  background-color: var(--color-bg-dark);
  color: var(--color-text-light);
  padding: 6rem 0 3rem 0;
  border-top: 2px solid var(--color-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
  gap: 4rem;
  margin-bottom: 5rem;
}

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

.footer-logo {
  margin-bottom: 1.5rem;
}

.footer-logo .logo-main {
  font-size: 1.75rem;
}

.footer-desc {
  color: var(--color-text-light-muted);
  font-size: 0.9375rem;
  font-weight: 300;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-full);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-light-muted);
  transition: var(--transition-fast);
}

.social-icon:hover {
  background-color: var(--color-secondary);
  border-color: var(--color-secondary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

.footer-heading {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text-light);
  margin-bottom: 2rem;
  position: relative;
}

.footer-heading::after {
  content: '';
  position: absolute;
  bottom: -0.5rem;
  left: 0;
  width: 30px;
  height: 1px;
  background-color: var(--color-secondary);
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-link {
  font-size: 0.9375rem;
  color: var(--color-text-light-muted);
  transition: var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-secondary);
  padding-left: 5px;
}

.footer-contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.footer-contact-item {
  display: flex;
  gap: 1rem;
}

.footer-contact-icon {
  width: 18px;
  height: 18px;
  color: var(--color-secondary);
  flex-shrink: 0;
  margin-top: 0.25rem;
}

.footer-contact-item p {
  font-size: 0.9375rem;
  color: var(--color-text-light-muted);
  font-weight: 300;
  line-height: 1.5;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.copyright {
  font-size: 0.8125rem;
  color: var(--color-text-light-muted);
  font-weight: 300;
}

.footer-legal {
  display: flex;
  gap: 2rem;
}

.footer-legal-link {
  font-size: 0.8125rem;
  color: var(--color-text-light-muted);
  font-weight: 300;
}

.footer-legal-link:hover {
  color: var(--color-secondary);
}

/* --- RESPONSIVE BREAKPOINTS --- */

@media (max-width: 1200px) {
  .container {
    padding: 0 3rem;
  }
  .about-grid, .contact-grid {
    gap: 4rem;
  }
  .vision-grid {
    gap: 5rem;
  }
  .footer-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 3rem;
  }
}

@media (max-width: 992px) {
  .section-padding {
    padding: 6rem 0;
  }
  
  /* Navigation */
  .nav {
    position: fixed;
    top: 90px;
    left: 0;
    width: 100%;
    height: 0;
    background-color: var(--color-bg-dark);
    flex-direction: column;
    gap: 2rem;
    padding: 0;
    overflow: hidden;
    transition: var(--transition-smooth);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }
  
  .header.sticky .nav {
    top: 75px;
  }
  
  .nav.active {
    height: calc(100vh - 90px);
    padding: 4rem 2rem;
    overflow-y: auto;
  }
  
  .header.sticky .nav.active {
    height: calc(100vh - 75px);
  }
  
  .menu-toggle {
    display: block;
  }
  
  .header-cta {
    display: none; /* Hide button in sticky header for mobile to reduce clutter */
  }
  
  /* Mobile menu active hamburger state */
  .menu-toggle.active .hamburger-line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }
  
  .menu-toggle.active .hamburger-line:nth-child(2) {
    opacity: 0;
  }
  
  .menu-toggle.active .hamburger-line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  /* Grid layouts */
  .about-grid, .contact-grid {
    grid-template-columns: 1fr;
    gap: 5rem;
  }
  
  .about-image-wrapper {
    order: 2; /* Put image second on mobile about page */
  }
  
  .why-grid, .leader-grid, .csr-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  
  .projects-grid {
    grid-template-columns: 1fr;
  }
  
  .vision-grid {
    grid-template-columns: 1fr;
    gap: 5rem;
  }
  
  .achievements-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 4rem 2rem;
  }
}

@media (max-width: 576px) {
  .container {
    padding: 0 1.5rem;
  }
  
  .section-padding {
    padding: 5rem 0;
  }
  
  .hero-actions {
    flex-direction: column;
    gap: 1rem;
  }
  
  .about-img {
    height: 380px;
  }
  
  .project-card {
    height: 400px;
  }
  
  .project-content {
    padding: 2rem;
  }
  
  .project-details {
    gap: 1.5rem;
  }
  
  .testimonial-slide {
    padding: 0 1rem;
  }
  
  .contact-form-wrapper {
    padding: 2.5rem 1.5rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
}

/* Respect user preference for reduced motion */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-delay: 0s !important;
    animation-duration: 0s !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0s !important;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1 !important;
    transform: none !important;
  }
  .hero-bg {
    animation: none !important;
  }
}