:root {
  --primary-color: #0f172a; /* Deep Slate/Navy */
  --secondary-color: #1e293b; /* Lighter Slate */
  --accent-color: #f59e0b; /* Sun Gold/Orange */
  --accent-hover: #d97706;
  --text-dark: #334155;
  --text-light: #f8fafc;
  --bg-light: #f1f5f9;
  --bg-white: #ffffff;
  --font-main: 'Poppins', sans-serif;
  --transition: all 0.3s ease-in-out;
  --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  color: var(--primary-color);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; position: relative; padding-bottom: 0.5rem; }
h2::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 60px;
  height: 4px;
  background-color: var(--accent-color);
  border-radius: 2px;
}
.text-center h2::after {
  left: 50%;
  transform: translateX(-50%);
}

p {
  margin-bottom: 1rem;
  font-weight: 400;
  font-size: 1.05rem;
}

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

/* Utilities */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section-padding {
  padding: 5rem 0;
}

.text-center { text-align: center; }
.text-light { color: var(--text-light); }
.text-accent { color: var(--accent-color); }
.bg-dark { background-color: var(--primary-color); color: var(--text-light); }
.bg-dark h2 { color: var(--text-light); }
.bg-white { background-color: var(--bg-white); }
.bg-gray { background-color: var(--bg-light); }

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.8rem 2rem;
  border-radius: 50px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  cursor: pointer;
  border: none;
  transition: var(--transition);
}

.btn-primary {
  background-color: var(--accent-color);
  color: var(--text-light) !important;
  box-shadow: 0 4px 15px rgba(245, 158, 11, 0.4);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(245, 158, 11, 0.6);
}

.btn-outline {
  background-color: transparent;
  border: 2px solid var(--accent-color);
  color: var(--accent-color);
}

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

/* Navbar */
header {
  background-color: var(--primary-color);
  position: fixed;
  width: 100%;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.logo img {
  height: 60px;
  object-fit: contain;
  filter: brightness(0) invert(1); /* Makes black logo white, adjust if needed */
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

.nav-links li a {
  color: var(--text-light);
  font-weight: 600;
  font-size: 0.95rem;
  text-transform: uppercase;
  position: relative;
  padding: 0.5rem 0;
}

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

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

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

.hamburger {
  display: none;
  cursor: pointer;
}

.hamburger .bar {
  width: 25px;
  height: 3px;
  background-color: var(--text-light);
  margin: 5px 0;
  transition: var(--transition);
}

/* Hero Section */
.hero {
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  position: relative;
  background-size: cover;
  background-position: center;
  margin-top: 0; /* Navbar is fixed */
  padding-top: 80px;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to right, rgba(15, 23, 42, 0.9) 0%, rgba(15, 23, 42, 0.4) 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
  color: var(--text-light);
}

.hero-content h1 {
  color: var(--text-light);
  font-size: 4rem;
  margin-bottom: 1.5rem;
  animation: fadeInUp 1s ease-out;
}

.hero-content p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-buttons {
  animation: fadeInUp 1s ease-out 0.4s both;
}

/* Grid Layouts */
.grid-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

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

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

/* Cards */
.card {
  background: var(--bg-white);
  border-radius: 12px;
  padding: 2.5rem 2rem;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  border-bottom: 4px solid transparent;
  position: relative;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-bottom-color: var(--accent-color);
}

.card-icon {
  font-size: 3rem;
  color: var(--accent-color);
  margin-bottom: 1.5rem;
}

/* Images */
.img-fluid {
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: var(--shadow-md);
  object-fit: cover;
}

.img-h400 {
  height: 400px;
}

/* Contact/Info Banner */
.info-banner {
  background-color: var(--accent-color);
  color: var(--text-light);
  padding: 0.5rem 0;
  font-size: 0.9rem;
  font-weight: 600;
}

.info-banner-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.info-banner a {
  color: var(--text-light);
  margin-left: 1rem;
}

/* Footer */
footer {
  background-color: var(--primary-color);
  color: var(--text-light);
  padding: 5rem 0 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-logo img {
  height: 80px;
  margin-bottom: 1rem;
  filter: brightness(0) invert(1);
}

.footer-col h4 {
  color: var(--text-light);
  margin-bottom: 1.5rem;
  font-size: 1.2rem;
  position: relative;
  padding-bottom: 0.5rem;
}

.footer-col h4::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 40px;
  height: 3px;
  background-color: var(--accent-color);
}

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

.footer-links li {
  margin-bottom: 0.8rem;
}

.footer-links a {
  color: #cbd5e1;
}

.footer-links a:hover {
  color: var(--accent-color);
  padding-left: 5px;
}

.footer-contact p {
  margin-bottom: 1rem;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  color: #cbd5e1;
}

.footer-bottom {
  text-align: center;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  color: #94a3b8;
  font-size: 0.9rem;
}

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

.fade-in-section {
  opacity: 0;
  transform: translateY(30px);
  visibility: hidden;
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
  will-change: opacity, visibility;
}

.fade-in-section.is-visible {
  opacity: 1;
  transform: none;
  visibility: visible;
}

/* Responsive */
@media (max-width: 992px) {
  .grid-3, .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }
  .grid-2 {
    grid-template-columns: 1fr;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  h1 { font-size: 2.5rem; }
  h2 { font-size: 2rem; }
}

@media (max-width: 768px) {
  .hamburger {
    display: block;
  }
  
  .nav-links {
    position: fixed;
    left: -100%;
    top: 80px;
    flex-direction: column;
    background-color: var(--primary-color);
    width: 100%;
    text-align: center;
    transition: 0.3s;
    box-shadow: var(--shadow-md);
    padding: 2rem 0;
  }
  
  .nav-links.active {
    left: 0;
  }
  
  .nav-links li {
    margin: 1rem 0;
  }
  
  .hero-content h1 {
    font-size: 2.5rem;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
  }
  
  .grid-3, .grid-4 {
    grid-template-columns: 1fr;
  }
}