/* ===================================================
   Sanrakshan Infra — Eco-Themed Design System
   "Step to a Better World"
   =================================================== */

/* ---------- Google Fonts ---------- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800;900&display=swap');

/* ---------- CSS Custom Properties ---------- */
:root {
  /* Core palette */
  --color-bg-deep:       #040d1a;
  --color-bg-primary:    #0a192f;
  --color-bg-secondary:  #112240;
  --color-bg-card:       rgba(17, 34, 64, 0.6);

  /* Greens */
  --color-green-50:      #ecfdf5;
  --color-green-100:     #d1fae5;
  --color-green-300:     #6ee7b7;
  --color-green-400:     #34d399;
  --color-green-500:     #10b981;
  --color-green-600:     #059669;
  --color-green-700:     #047857;

  /* Blues */
  --color-blue-400:      #38bdf8;
  --color-blue-500:      #0ea5e9;
  --color-blue-600:      #0284c7;
  --color-cyan-400:      #22d3ee;
  --color-cyan-500:      #06b6d4;

  /* Text */
  --color-text-primary:  #e2e8f0;
  --color-text-secondary:#94a3b8;
  --color-text-muted:    #64748b;
  --color-text-white:    #ffffff;

  /* Gradients */
  --gradient-hero:       linear-gradient(135deg, #0a192f 0%, #0d2137 30%, #0f2b3f 60%, #073b2e 100%);
  --gradient-green:      linear-gradient(135deg, var(--color-green-500), var(--color-cyan-500));
  --gradient-card:       linear-gradient(145deg, rgba(16, 185, 129, 0.08), rgba(6, 182, 212, 0.05));
  --gradient-glow:       radial-gradient(ellipse at 50% 0%, rgba(16, 185, 129, 0.15) 0%, transparent 60%);

  /* Typography */
  --font-body:           'Inter', system-ui, -apple-system, sans-serif;
  --font-heading:        'Outfit', 'Inter', system-ui, sans-serif;

  /* Spacing */
  --space-xs:  0.25rem;
  --space-sm:  0.5rem;
  --space-md:  1rem;
  --space-lg:  1.5rem;
  --space-xl:  2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Sizing */
  --container-max:  1280px;
  --container-wide: 1440px;
  --nav-height:     100px;

  /* Borders & Radius */
  --radius-sm:  8px;
  --radius-md:  12px;
  --radius-lg:  16px;
  --radius-xl:  24px;
  --radius-full:50%;

  /* Shadows */
  --shadow-sm:   0 2px 8px rgba(0,0,0,0.15);
  --shadow-md:   0 4px 20px rgba(0,0,0,0.25);
  --shadow-lg:   0 8px 40px rgba(0,0,0,0.35);
  --shadow-glow: 0 0 30px rgba(16,185,129,0.2);

  /* Glass */
  --glass-bg:      rgba(17, 34, 64, 0.55);
  --glass-border:  rgba(255, 255, 255, 0.08);
  --glass-blur:    20px;

  /* Transitions */
  --transition-fast:   0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base:   0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-spring: 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--color-bg-deep);
  color: var(--color-text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  text-decoration: none;
  color: inherit;
}

ul, ol {
  list-style: none;
}

button {
  border: none;
  cursor: pointer;
  font-family: inherit;
  background: none;
}

/* ---------- Utility classes ---------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.gradient-text {
  background: var(--gradient-green);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-padding {
  padding: var(--space-4xl) 0;
}

.section-label {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--color-green-400);
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.section-label::before {
  content: '';
  display: inline-block;
  width: 32px;
  height: 2px;
  background: var(--gradient-green);
  border-radius: 2px;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-lg);
  color: var(--color-text-white);
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  max-width: 640px;
  line-height: 1.8;
}

/* ---------- Scroll Animations ---------- */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

.reveal-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-right {
  opacity: 0;
  transform: translateX(50px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

.reveal-scale {
  opacity: 0;
  transform: scale(0.9);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal-scale.visible {
  opacity: 1;
  transform: scale(1);
}

/* Stagger children */
.stagger-children .reveal:nth-child(1) { transition-delay: 0.05s; }
.stagger-children .reveal:nth-child(2) { transition-delay: 0.1s; }
.stagger-children .reveal:nth-child(3) { transition-delay: 0.15s; }
.stagger-children .reveal:nth-child(4) { transition-delay: 0.2s; }
.stagger-children .reveal:nth-child(5) { transition-delay: 0.25s; }
.stagger-children .reveal:nth-child(6) { transition-delay: 0.3s; }
.stagger-children .reveal:nth-child(7) { transition-delay: 0.35s; }
.stagger-children .reveal:nth-child(8) { transition-delay: 0.4s; }


/* ===================================================
   1. NAVIGATION
   =================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  z-index: 1000;
  transition: background-color var(--transition-base),
              box-shadow var(--transition-base),
              backdrop-filter var(--transition-base);
}

.navbar.scrolled {
  background-color: rgba(4, 13, 26, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 20px rgba(0, 0, 0, 0.3);
}

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

.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.35rem;
  color: var(--color-text-white);
}

.nav-logo img {
  width: 150px;
  height: auto;
  object-fit: contain;
  margin-top: 0;
}

.nav-logo .logo-text-green {
  color: var(--color-green-400);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav-links a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-green);
  border-radius: 2px;
  transition: width var(--transition-base);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-green-400);
}

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

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 10px 24px;
  background: var(--gradient-green);
  color: var(--color-bg-deep) !important;
  font-weight: 600;
  font-size: 0.9rem;
  border-radius: 50px;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 20px rgba(16, 185, 129, 0.35);
}

.nav-cta::after {
  display: none !important;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  cursor: pointer;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: var(--transition-base);
}

.hamburger.active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}


/* ===================================================
   2. HERO SECTION
   =================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-hero);
  overflow: hidden;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.3;
  z-index: 1;
}

.hero-glow-1 {
  top: -10%;
  right: -5%;
  background: var(--color-green-600);
}

.hero-glow-2 {
  bottom: -15%;
  left: -10%;
  background: var(--color-cyan-500);
  opacity: 0.2;
}

.hero-content {
  position: relative;
  z-index: 3;
  text-align: center;
  max-width: 900px;
  padding: 0 var(--space-lg);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 8px 20px;
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid rgba(16, 185, 129, 0.25);
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-green-400);
  margin-bottom: var(--space-xl);
  animation: fadeInDown 0.8s ease forwards;
}

.hero-badge .badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-green-400);
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(1.5); }
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--color-text-white);
  margin-bottom: var(--space-lg);
  animation: fadeInUp 0.8s ease 0.1s forwards;
  opacity: 0;
}

.hero-title .highlight {
  position: relative;
  display: inline;
}

.hero-title .highlight::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 0;
  width: 100%;
  height: 6px;
  background: var(--gradient-green);
  opacity: 0.4;
  border-radius: 3px;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-text-secondary);
  max-width: 650px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.8;
  animation: fadeInUp 0.8s ease 0.2s forwards;
  opacity: 0;
}

.hero-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.3s forwards;
  opacity: 0;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  background: var(--gradient-green);
  color: var(--color-bg-deep);
  font-weight: 600;
  font-size: 1rem;
  border-radius: 50px;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(16, 185, 129, 0.35);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 14px 32px;
  background: transparent;
  color: var(--color-text-primary);
  font-weight: 600;
  font-size: 1rem;
  border-radius: 50px;
  border: 1px solid var(--glass-border);
  transition: var(--transition-fast);
}

.btn-secondary:hover {
  border-color: var(--color-green-400);
  color: var(--color-green-400);
  background: rgba(16, 185, 129, 0.05);
}

.hero-scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  animation: fadeInUp 1s ease 0.6s forwards;
  opacity: 0;
}

.scroll-mouse {
  width: 24px;
  height: 38px;
  border-radius: 12px;
  border: 2px solid var(--color-text-muted);
  position: relative;
}

.scroll-mouse::after {
  content: '';
  position: absolute;
  top: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--color-green-400);
  border-radius: 2px;
  animation: scroll-down 2s ease-in-out infinite;
}

@keyframes scroll-down {
  0% { opacity: 1; transform: translateX(-50%) translateY(0); }
  100% { opacity: 0; transform: translateX(-50%) translateY(16px); }
}

.scroll-text {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
}

/* Hero keyframes */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Floating particles */
.floating-leaf {
  position: absolute;
  z-index: 1;
  opacity: 0.15;
  animation: float-up linear infinite;
  pointer-events: none;
}

@keyframes float-up {
  0% {
    transform: translateY(100vh) rotate(0deg);
    opacity: 0;
  }
  10% { opacity: 0.15; }
  90% { opacity: 0.15; }
  100% {
    transform: translateY(-100px) rotate(360deg);
    opacity: 0;
  }
}


/* ===================================================
   3. ABOUT SECTION
   =================================================== */
.about {
  background: var(--color-bg-primary);
  position: relative;
  overflow: hidden;
}

.about::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-green-500), transparent);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
  align-items: center;
}

.about-image-wrapper {
  position: relative;
}

.about-image-wrapper img {
  width: 100%;
  border-radius: var(--radius-lg);
  object-fit: cover;
  aspect-ratio: 4/3;
}

.about-image-wrapper::before {
  content: '';
  position: absolute;
  inset: -6px;
  border-radius: calc(var(--radius-lg) + 6px);
  background: var(--gradient-green);
  opacity: 0.15;
  z-index: -1;
}

.about-stats-inline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--glass-border);
}

.about-stat {
  text-align: center;
}

.about-stat-number {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  background: var(--gradient-green);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.about-stat-label {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}


/* ===================================================
   4. SERVICES SECTION
   =================================================== */
.services {
  background: var(--color-bg-deep);
  position: relative;
}

.services::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(16, 185, 129, 0.06) 0%, transparent 70%);
  pointer-events: none;
}

.services-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.services-header .section-subtitle {
  margin: 0 auto;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-xl);
}

.service-card {
  position: relative;
  padding: var(--space-2xl);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  transition: transform var(--transition-smooth),
              border-color var(--transition-smooth),
              box-shadow var(--transition-smooth);
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-green);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: rgba(16, 185, 129, 0.25);
  box-shadow: var(--shadow-glow);
}

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

.service-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  background: rgba(16, 185, 129, 0.1);
  margin-bottom: var(--space-lg);
  font-size: 1.6rem;
  transition: transform var(--transition-spring), background var(--transition-base);
}

.service-card:hover .service-icon {
  transform: scale(1.1) rotate(-5deg);
  background: rgba(16, 185, 129, 0.18);
}

.service-card h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-text-white);
  margin-bottom: var(--space-sm);
}

.service-card p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}


/* ===================================================
   5. PROJECTS / GALLERY SECTION
   =================================================== */
.projects {
  background: var(--color-bg-primary);
  position: relative;
}

.projects-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.projects-header .section-subtitle {
  margin: 0 auto;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: auto;
  gap: var(--space-lg);
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 4/3;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: transform var(--transition-spring), box-shadow var(--transition-smooth), border-color var(--transition-base);
}

.gallery-item:hover {
  transform: translateY(-6px);
  box-shadow: 0 15px 35px rgba(16, 185, 129, 0.25);
  border-color: rgba(16, 185, 129, 0.4);
}

.gallery-item:nth-child(1) {
  grid-column: span 2;
  grid-row: span 2;
  aspect-ratio: auto;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(4, 13, 26, 0.85) 0%, transparent 60%);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: var(--space-xl);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.gallery-overlay h4 {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  color: var(--color-text-white);
  margin-bottom: 4px;
}

.gallery-overlay p {
  font-size: 0.85rem;
  color: var(--color-green-300);
}

.gallery-item:hover img {
  transform: scale(1.08);
}

.gallery-item:hover .gallery-overlay {
  opacity: 1;
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.92);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.lightbox.active {
  opacity: 1;
  visibility: visible;
}

.lightbox img {
  max-width: 85vw;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  transform: scale(0.9);
  transition: transform var(--transition-smooth);
}

.lightbox.active img {
  transform: scale(1);
}

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 32px;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background: rgba(255,255,255,0.1);
  color: var(--color-text-white);
  font-size: 1.5rem;
  transition: background var(--transition-fast);
  cursor: pointer;
  border: none;
}

.lightbox-close:hover {
  background: rgba(255,255,255,0.2);
}


/* ===================================================
   6. STATS / WHY CHOOSE US
   =================================================== */
.stats {
  background: var(--color-bg-deep);
  position: relative;
  overflow: hidden;
}

.stats::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-glow);
  pointer-events: none;
}

.stats-inner {
  position: relative;
  padding: var(--space-3xl) var(--space-2xl);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-xl);
  text-align: center;
}

.stat-item {
  padding: var(--space-lg);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 800;
  background: var(--gradient-green);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
  margin-bottom: var(--space-sm);
}

.stat-label {
  font-size: 1rem;
  color: var(--color-text-secondary);
  font-weight: 500;
}

.stat-divider {
  width: 1px;
  background: var(--glass-border);
  margin: var(--space-lg) 0;
}


/* ===================================================
   7. CLIENTS SECTION
   =================================================== */
.clients {
  background: var(--color-bg-primary);
  position: relative;
}

.clients-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.clients-header .section-subtitle {
  margin: 0 auto;
}

.clients-marquee {
  overflow: hidden;
  padding: var(--space-lg) 0;
  position: relative;
}

.clients-marquee::before,
.clients-marquee::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  width: 120px;
  z-index: 2;
  pointer-events: none;
}

.clients-marquee::before {
  left: 0;
  background: linear-gradient(to right, var(--color-bg-primary), transparent);
}

.clients-marquee::after {
  right: 0;
  background: linear-gradient(to left, var(--color-bg-primary), transparent);
}

.marquee-track {
  display: flex;
  gap: var(--space-xl);
  animation: marquee 30s linear infinite;
  width: max-content;
}

.marquee-track:hover {
  animation-play-state: paused;
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

.client-chip {
  flex-shrink: 0;
  padding: 12px 28px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  white-space: nowrap;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.client-chip:hover {
  border-color: var(--color-green-500);
  color: var(--color-green-400);
}

/* Client grid below marquee */
.clients-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-2xl);
}

.client-card {
  display: flex;
  flex-direction: column;
  background: rgba(17, 34, 64, 0.4);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
  height: 100%;
}

.client-card:hover {
  transform: translateY(-5px);
  border-color: rgba(16, 185, 129, 0.25);
  box-shadow: var(--shadow-glow);
}

.client-card-image {
  width: 100%;
  aspect-ratio: 16/10;
  overflow: hidden;
  position: relative;
  background: var(--color-bg-deep);
}

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

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

.client-card-info {
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.client-card-tag {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-green-400);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.client-card-title {
  font-family: var(--font-heading);
  color: var(--color-text-white);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
  line-height: 1.4;
}

.client-card-location {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-sm);
  font-weight: 500;
}

.client-card-desc {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}


/* ===================================================
   8. CONTACT SECTION
   =================================================== */
.contact {
  background: var(--color-bg-deep);
  position: relative;
}

.contact::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-cyan-500), transparent);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-4xl);
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
}

.contact-item {
  display: flex;
  gap: var(--space-lg);
  align-items: flex-start;
}

.contact-item-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  background: rgba(16, 185, 129, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: 1.3rem;
}

.contact-item h4 {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-text-white);
  margin-bottom: 4px;
}

.contact-item p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.form-group {
  position: relative;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 18px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--color-text-muted);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--color-green-500);
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.btn-submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 16px 36px;
  background: var(--gradient-green);
  color: var(--color-bg-deep);
  font-weight: 700;
  font-size: 1rem;
  border-radius: 50px;
  border: none;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  width: fit-content;
}

.btn-submit:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(16, 185, 129, 0.35);
}


/* ===================================================
   9. FOOTER
   =================================================== */
.footer {
  background: var(--color-bg-primary);
  border-top: 1px solid var(--glass-border);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand .nav-logo img {
  width: 150px;
  height: auto;
  object-fit: contain;
  margin-top: -10px;
  margin-bottom: var(--space-md);
}

.footer-brand p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-top: var(--space-md);
  max-width: 300px;
  line-height: 1.7;
}

.footer-socials {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.footer-social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--glass-border);
  color: var(--color-text-secondary);
  font-size: 1.1rem;
  transition: var(--transition-fast);
}

.footer-social-link:hover {
  border-color: var(--color-green-500);
  color: var(--color-green-400);
  background: rgba(16, 185, 129, 0.08);
}

.footer-column h4 {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text-white);
  margin-bottom: var(--space-lg);
}

.footer-column a {
  display: block;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  padding: 4px 0;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.footer-column a:hover {
  color: var(--color-green-400);
  padding-left: 6px;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--glass-border);
  font-size: 0.85rem;
  color: var(--color-text-muted);
}


/* ===================================================
   10. RESPONSIVE DESIGN
   =================================================== */

/* Tablet */
@media (max-width: 1024px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

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

  .gallery-item:nth-child(1) {
    grid-column: span 2;
    grid-row: span 1;
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
  }
}

/* Mobile */
@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }

  .hamburger {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--color-bg-secondary);
    flex-direction: column;
    justify-content: center;
    gap: var(--space-xl);
    padding: var(--space-2xl);
    transition: right var(--transition-smooth);
    box-shadow: -10px 0 30px rgba(0,0,0,0.4);
  }

  .nav-links.open {
    right: 0;
  }

  .nav-cta {
    width: 100%;
    justify-content: center;
  }

  .hero-title {
    font-size: clamp(2rem, 8vw, 3rem);
  }

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

  .btn-primary,
  .btn-secondary {
    width: 100%;
    justify-content: center;
  }

  .about-stats-inline {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-md);
  }

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

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

  .gallery-item:nth-child(1) {
    grid-column: span 1;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
  }

  .form-row {
    grid-template-columns: 1fr;
  }

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

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .section-title {
    font-size: clamp(1.6rem, 6vw, 2.2rem);
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }

  .reveal,
  .reveal-left,
  .reveal-right,
  .reveal-scale {
    opacity: 1;
    transform: none;
  }
}

/* ===================================================
   Core Expertise Styling
   =================================================== */
.expertise-title {
  font-family: var(--font-heading);
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
  text-align: center;
}

.expertise-subtitle {
  text-align: center;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-2xl);
}

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: var(--space-lg);
}

.expertise-item {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--glass-bg);
  backdrop-filter: blur(var(--glass-blur));
  -webkit-backdrop-filter: blur(var(--glass-blur));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

.expertise-item:hover {
  transform: translateY(-4px);
  border-color: rgba(16, 185, 129, 0.2);
  box-shadow: var(--shadow-glow);
}

.expertise-icon {
  font-size: 1.8rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 2px;
}

.expertise-item h4 {
  font-family: var(--font-heading);
  color: var(--color-text-white);
  font-size: 1.1rem;
  margin-bottom: var(--space-xs);
  font-weight: 600;
}

.expertise-item p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* ===================================================
   Pan India Presence Section
   =================================================== */
.presence {
  background: var(--color-bg-primary);
  position: relative;
  overflow: hidden;
}

.presence::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-green-500), transparent);
}

.presence-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-3xl);
  align-items: center;
}

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

.states-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
  margin-top: var(--space-2xl);
}

.state-item-card {
  padding: var(--space-sm) var(--space-md);
  background: rgba(17, 34, 64, 0.4);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  text-align: center;
  font-size: 0.9rem;
  color: var(--color-text-primary);
  transition: all var(--transition-fast);
}

.state-item-card:hover {
  background: rgba(16, 185, 129, 0.1);
  border-color: var(--color-green-500);
  transform: translateY(-2px);
  color: var(--color-green-300);
}

.presence-map-wrapper {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.map-container {
  position: relative;
  width: 100%;
  max-width: 550px;
  margin: 0 auto;
}

.india-map-img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  filter: drop-shadow(0 15px 30px rgba(0, 0, 0, 0.5));
}

/* Floating Pins */
.map-pin {
  position: absolute;
  width: 16px;
  height: 16px;
  transform: translate(-50%, -50%);
  cursor: pointer;
  z-index: 10;
}

.pin-dot {
  display: block;
  width: 10px;
  height: 10px;
  background-color: var(--color-green-400);
  border-radius: 50%;
  border: 2px solid var(--color-text-white);
  box-shadow: 0 0 10px rgba(16, 185, 129, 0.8);
  position: absolute;
  top: 3px;
  left: 3px;
  z-index: 2;
}

.pin-pulse {
  display: block;
  width: 24px;
  height: 24px;
  border: 2px solid var(--color-cyan-400);
  border-radius: 50%;
  position: absolute;
  top: -4px;
  left: -4px;
  animation: pin-glow 2s infinite ease-out;
  opacity: 0;
  pointer-events: none;
  z-index: 1;
}

@keyframes pin-glow {
  0% { transform: scale(0.5); opacity: 0; }
  25% { opacity: 0.8; }
  100% { transform: scale(1.8); opacity: 0; }
}

/* Tooltips */
.pin-tooltip {
  position: absolute;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: rgba(10, 25, 47, 0.95);
  color: var(--color-text-white);
  padding: var(--space-xs) var(--space-md);
  border: 1px solid var(--color-green-400);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-md);
  pointer-events: none;
  z-index: 20;
}

.pin-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border-width: 5px;
  border-style: solid;
  border-color: var(--color-green-400) transparent transparent transparent;
}

.map-pin:hover .pin-tooltip,
.map-pin.active .pin-tooltip {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.map-pin:hover .pin-dot,
.map-pin.active .pin-dot {
  background-color: var(--color-cyan-400);
  box-shadow: 0 0 15px rgba(34, 211, 238, 0.9);
}

/* Responsive grid for map presence */
@media (max-width: 992px) {
  .presence-grid {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

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

@media (max-width: 768px) {
  .states-list {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 480px) {
  .states-list {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* ---------- Hero Slideshow ---------- */
.hero-slideshow {
  position: absolute;
  inset: 0;
  z-index: 1;
  overflow: hidden;
  background: var(--color-bg-deep);
}

.hero-slideshow .slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  z-index: 1;
  transform: scale(1);
  transition: opacity 2s ease-in-out;
  will-change: opacity;
}

.hero-slideshow .slide.active {
  opacity: 0.55;
  z-index: 2;
}

.hero-slideshow .slide.fade-out {
  opacity: 0;
  z-index: 1;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 2;
  background: linear-gradient(
    to bottom,
    rgba(4, 13, 26, 0.45) 0%,
    rgba(4, 13, 26, 0.75) 70%,
    var(--color-bg-deep) 100%
  );
  pointer-events: none;
}


/* ---------- Project Cards & Filters ---------- */
.project-filters {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
  margin-bottom: var(--space-3xl);
}

.filter-btn {
  padding: 10px 24px;
  border-radius: 50px;
  font-family: var(--font-body);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: all var(--transition-base);
  cursor: pointer;
}

.filter-btn:hover {
  color: var(--color-green-400);
  border-color: rgba(16, 185, 129, 0.3);
  background: rgba(16, 185, 129, 0.08);
}

.filter-btn.active {
  color: var(--color-bg-deep);
  background: var(--gradient-green);
  border-color: transparent;
  font-weight: 600;
}

.projects-showcase {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-xl);
}

.project-card {
  position: relative;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth), border-color var(--transition-base);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 50px rgba(16, 185, 129, 0.15);
  border-color: rgba(16, 185, 129, 0.3);
}

.project-card--featured {
  grid-column: span 2;
  flex-direction: row;
}

.project-card__image {
  position: relative;
  overflow: hidden;
}

.project-card--featured .project-card__image {
  width: 55%;
  min-height: 320px;
}

.project-card:not(.project-card--featured) .project-card__image {
  height: 240px;
}

.project-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.project-card:hover .project-card__image img {
  transform: scale(1.06);
}

.project-card__badge {
  position: absolute;
  top: var(--space-md);
  left: var(--space-md);
  padding: 6px 16px;
  background: var(--gradient-green);
  color: var(--color-bg-deep);
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: 50px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.project-card__content {
  padding: var(--space-xl);
  display: flex;
  flex-direction: column;
  justify-content: center;
  flex: 1;
}

.project-card__category {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--color-green-400);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: var(--space-sm);
}

.project-card__title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text-white);
  margin-bottom: var(--space-sm);
  line-height: 1.3;
}

.project-card__desc {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
}

.project-card__meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
  font-size: 0.82rem;
  color: var(--color-text-muted);
}

.project-card__meta span {
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

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

@media (max-width: 900px) {
  .projects-showcase {
    grid-template-columns: 1fr;
  }
  .project-card--featured {
    grid-column: span 1;
    flex-direction: column;
  }
  .project-card--featured .project-card__image {
    width: 100%;
    min-height: 220px;
  }
}