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

body {
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #fff;
}

.container {
  width: 90%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

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

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

/* TYPOGRAPHY */
h1, h2, h3, h4 {
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  line-height: 1.2;
}

h1 {
  font-size: 2.8rem;
  margin-bottom: 1rem;
}

h2 {
  font-size: 2.2rem;
  margin-bottom: 2.5rem;
  text-align: center;
}

h3 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

p {
  margin-bottom: 1rem;
}

.section-title {
  position: relative;
  padding-bottom: 0.5rem;
}

.section-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 4px;
  background: #FFD700;
  margin: 0.5rem auto 0;
}

/* BUTTONS */
.btn-primary,
.cta-button {
  background: #0A2540;
  color: white;
  padding: 12px 28px;
  border-radius: 30px;
  font-weight: 600;
  display: inline-block;
  transition: all 0.3s ease;
}

.btn-primary:hover,
.cta-button:hover {
  background: #00BFA5;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.btn-secondary {
  background: transparent;
  color: #0A2540;
  border: 2px solid #0A2540;
  padding: 12px 28px;
  border-radius: 30px;
  font-weight: 600;
  display: inline-block;
  transition: all 0.3s ease;
  margin-left: 1rem;
}

.btn-secondary:hover {
  background: #0A2540;
  color: white;
}

/* HEADER */
.header {
  background: white;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
  position: sticky;
  top: 0;
  z-index: 1000;
}

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

.logo {
  font-family: 'Poppins', sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: #0A2540;
}

.nav-menu {
  display: flex;
  gap: 2rem;
}

.nav-menu a {
  font-weight: 500;
  transition: color 0.3s;
}

.nav-menu a:hover {
  color: #00BFA5;
}

.mobile-toggle {
  display: none;
  font-size: 1.5rem;
  cursor: pointer;
}

/* HERO */
.hero {
  background: linear-gradient(rgba(10, 37, 64, 0.8), rgba(10, 37, 64, 0.9)), url('https://via.placeholder.com/1920x800?text=Infrastructure+Hero') no-repeat center center/cover;
  color: white;
  padding: 120px 0 100px;
  text-align: center;
}

.hero-content {
  max-width: 800px;
  margin: 0 auto;
}

.subtitle {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

.hero-buttons {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* SERVICES */
.services-section {
  padding: 80px 0;
  background: #f9f9f9;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.service-card {
  background: white;
  padding: 2rem;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.05);
  text-align: center;
  transition: transform 0.3s ease;
}

.service-card:hover {
  transform: translateY(-5px);
}

.service-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
}

/* PROJECTS */
.projects-section {
  padding: 80px 0;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.project-card {
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  transition: transform 0.3s ease;
}

.project-card:hover {
  transform: translateY(-5px);
}

.project-info {
  padding: 1.5rem;
  background: white;
}

.location {
  color: #666;
  font-size: 0.9rem;
}

.view-project {
  color: #00BFA5;
  font-weight: 600;
  font-size: 0.95rem;
}

/* ABOUT */
.about-section {
  padding: 80px 0;
  background: #f9f9f9;
}

.about-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.about-image img {
  border-radius: 12px;
  box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2rem;
}

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

.stat-number {
  font-size: 2.5rem;
  font-weight: 700;
  color: #0A2540;
}

.stat-label {
  font-size: 0.9rem;
  color: #666;
}

/* TESTIMONIALS */
.testimonials-section {
  padding: 80px 0;
  background: white;
}

.testimonial {
  background: #f1f1f1;
  padding: 2rem;
  border-radius: 12px;
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
}

.client {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 1.5rem;
}

.client img {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
}

/* CONTACT */
.contact-section {
  padding: 80px 0;
  background: #0A2540;
  color: white;
}

.contact-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact-form h2,
.contact-info h3 {
  color: #FFD700;
  margin-bottom: 1.5rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 12px;
  margin-bottom: 1rem;
  border: none;
  border-radius: 6px;
  background: rgba(255,255,255,0.1);
  color: white;
}

.contact-form input::placeholder,
.contact-form textarea::placeholder {
  color: rgba(255,255,255,0.7);
}

.contact-form button {
  width: 100%;
  margin-top: 0.5rem;
}

.contact-info p {
  margin-bottom: 0.75rem;
  line-height: 1.6;
}

.social-icons a {
  color: #FFD700;
  margin: 0 0.5rem;
}

.map-placeholder {
  margin-top: 1.5rem;
}

/* FOOTER */
.footer {
  background: #071a2e;
  color: #aaa;
  padding: 4rem 0 2rem;
  position: relative;
}

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

.footer-logo {
  font-size: 2rem;
  font-weight: 700;
  color: white;
  margin-bottom: 1rem;
}

.footer-links a,
.footer-contact p,
.footer-legal p {
  margin-bottom: 0.5rem;
}

.footer-links a:hover,
.footer-legal a:hover {
  color: #FFD700;
}

.back-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: #0A2540;
  color: white;
  padding: 10px 15px;
  border-radius: 30px;
  cursor: pointer;
  display: none;
  z-index: 999;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background: white;
    flex-direction: column;
    padding: 1rem 0;
    box-shadow: 0 5px 10px rgba(0,0,0,0.1);
    z-index: 999;
  }

  .nav-menu.active {
    display: flex;
  }

  .mobile-toggle {
    display: block;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .about-container,
  .contact-container {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

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

  .btn-secondary {
    margin-left: 0;
    margin-top: 1rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
}