body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f4f4f4;
  color: #333;
}
header {
  position: relative;
  background: linear-gradient(rgba(0, 0, 0, 0.5), rgba(0, 0, 0, 0.6)),
    url("../images/industry-webp.webp") no-repeat center center/cover;
  color: white;
  padding: 180px 20px 120px;
  text-align: center;
}
.header-nav {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 40px;
  box-sizing: border-box;
}
.header-nav .logo {
  font-size: 1.5rem;
  font-weight: bold;
  letter-spacing: 1px;
}
.header-nav .nav-links {
  display: flex;
  gap: 30px;
}
.header-nav .nav-links a {
  color: white;
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: color 0.3s ease;
}
.header-nav .nav-links a:hover {
  color: #00bfff;
  text-decoration: underline;
}
header h1 {
  font-size: 3.8rem;
  margin-bottom: 15px;
}
header p {
  font-size: 1.4rem;
  margin-top: 10px;
  opacity: 0.9;
}
section {
  padding: 60px 20px;
  max-width: 1000px;
  margin: auto;
}
section h2 {
  color: #222;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 10px;
}
/* Underline effect for section headers */
section h2::after {
  content: "";
  position: absolute;
  width: 50px;
  height: 4px;
  background: #00bfff;
  bottom: 0;
  left: 0;
  border-radius: 2px;
}
.services,
.contact-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
}
.card {
  background: white;
  border-radius: 10px;
  padding: 20px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
/* Hover effect for service cards */
.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.15);
}
.card img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  border-radius: 6px;
}
.card h3 {
  margin-top: 15px;
}
.contact-cards {
  padding-bottom: 40px;
}
.contact-card {
  background: white;
  padding: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  text-align: center;
  transition: background 0.3s ease, transform 0.3s ease;
}
/* Hover effect for contact cards */
.contact-card:hover {
  background: #00bfff;
  color: white;
  transform: translateY(-5px);
}
.contact-card span {
  font-size: 2rem;
  display: block;
  margin-bottom: 10px;
  color: #00bfff;
  transition: color 0.3s ease;
}
.contact-card:hover span {
  color: white;
}
.contact-card h3 {
  color: #222;
  margin-bottom: 10px;
  transition: color 0.3s ease;
}
.contact-card:hover h3 {
  color: white;
}
.contact-card p {
  font-size: 1.1rem;
  margin: 0;
  transition: color 0.3s ease;
}
.contact-card:hover p {
  color: white;
}
footer {
  background: #222;
  color: white;
  text-align: center;
  padding: 20px;
}
/* Responsive adjustments */
@media (max-width: 768px) {
  header {
    padding: 120px 15px 80px;
  }
  .header-nav {
    padding: 15px;
  }
  .header-nav .nav-links {
    gap: 15px;
  }
  .header-nav .nav-links a {
    font-size: 0.9rem;
  }
  header h1 {
    font-size: 2.8rem;
  }
  header p {
    font-size: 1.1rem;
  }
  section {
    padding: 40px 15px;
  }
}
@media (max-width: 480px) {
  .header-nav {
    flex-direction: column;
    align-items: flex-start;
  }
  .header-nav .nav-links {
    flex-wrap: wrap;
    margin-top: 10px;
  }
  .services,
  .contact-cards {
    grid-template-columns: 1fr;
  }
  .card img {
    height: auto;
  }
}

#water-tank-image {
  height: 500;
  width: 100%;
  object-fit: contain;
}

.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(0, 0, 0, 0.85);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.lightbox-img {
  max-width: 90%;
  max-height: 90%;
  border-radius: 8px;
  box-shadow: 0 0 20px rgba(255, 255, 255, 0.2);
  cursor: zoom-out;
}

.clickable-image {
  cursor: zoom-in;
}