body {
  margin: 0;
  font-family: Arial, sans-serif;
}

/* ✅ Header */
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px;
  background: #0b3d2e;
  color: white;
}

.topbar nav a {
  color: white;
  text-decoration: none;
  margin: 0 10px;
}

.callbtn {
  background: #1ecf7a;
  padding: 8px 14px;
  border-radius: 8px;
  color: white;
  text-decoration: none;
}

/* ✅ Hero Section */
.hero {
  height: 80vh;
  background: url("hero-bg.jpg") center/cover no-repeat;
  position: relative;
}

.overlay {
  background: rgba(0, 0, 0, 0.55);
  color: white;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  text-align: center;
  padding: 20px;
}

.btn {
  background: #1ecf7a;
  padding: 10px 18px;
  border-radius: 8px;
  text-decoration: none;
  color: white;
  margin: 8px;
}

.btn.outline {
  border: 2px solid white;
  background: transparent;
}

/* ✅ Cards */
.cards {
  padding: 50px;
  text-align: center;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 15px;
}

.card {
  background: #f3f3f3;
  padding: 20px;
  border-radius: 15px;
}

/* ✅ Why Choose */
.why {
  padding: 50px;
  background: #e8fff3;
}

.why ul {
  list-style: none;
  padding: 0;
}

.why li {
  margin: 10px 0;
  font-size: 18px;
}

/* ✅ Contact Form */
.contact-form {
  max-width: 400px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.contact-form input,
.contact-form textarea {
  padding: 10px;
  border-radius: 8px;
  border: 1px solid #ccc;
}

.contact-form button {
  background: #1ecf7a;
  border: none;
  padding: 12px;
  border-radius: 10px;
  cursor: pointer;
}

/* ✅ Footer */
footer {
  background: #0b3d2e;
  padding: 20px;
  color: white;
  text-align: center;
}

/* ✅ WhatsApp */
.whatsapp {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: #25d366;
  color: white;
  font-size: 28px;
  padding: 12px;
  border-radius: 50%;
  text-decoration: none;
}<!-- Our Clients Section -->
<section id="clients" style="padding:60px 20px; text-align:center; background:#f8f8f8;">

  <h2 style="font-size:32px; margin-bottom:10px;">
    Our Trusted Clients
  </h2>

  <p style="color:gray; margin-bottom:40px;">
    We have successfully worked with industries, hospitals, and commercial projects.
  </p>

  <div style="display:flex; justify-content:center; flex-wrap:wrap; gap:20px;">

    <div style="background:white; padding:20px; width:220px; border-radius:12px; box-shadow:0 0 10px #ddd;">
      <h3>ABC Industries</h3>
      <p>Environmental Clearance Support</p>
    </div>

    <div style="background:white; padding:20px; width:220px; border-radius:12px; box-shadow:0 0 10px #ddd;">
      <h3>Green Hospital Group</h3>
      <p>Biomedical Waste Authorization</p>
    </div>

    <div style="background:white; padding:20px; width:220px; border-radius:12px; box-shadow:0 0 10px #ddd;">
      <h3>RVSF Vehicle Unit</h3>
      <p>Consent & Compliance Services</p>
    </div>

    <div style="background:white; padding:20px; width:220px; border-radius:12px; box-shadow:0 0 10px #ddd;">
      <h3>Commercial Builders</h3>
      <p>STP / ETP Report Consultancy</p>
    </div>

  </div>

</section>
.client-box{
  background:white;
  padding:18px;
  border-radius:12px;
  font-size:16px;
  font-weight:600;
  box-shadow:0 0 12px rgba(0,0,0,0.08);
  transition:0.3s;
}

.client-box:hover{
  transform:translateY(-5px);
  background:#e9f7ef;
}