.certificate-section {
  background: linear-gradient(135deg, #f0f4ff, #ffffff);
  padding: 4rem 2rem;
  text-align: center;
  font-family: 'Poppins', sans-serif;
}

.certificate-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: #22439D;
  margin-bottom: 0.5rem;
}

.certificate-subtitle {
  font-size: 1.1rem;
  color: #555;
  margin-bottom: 2rem;
}

.certificate-frame {
  display: inline-block;
  padding: 1rem;
  background: #fff;
  border: 8px solid #22439D;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
  border-radius: 10px;
  max-width: 100%;
  width: 600px;
}

.certificate-image {
  max-width: 100%;
  height: auto;
  border-radius: 5px;
}

.certificate-download-btn {
  display: inline-block;
  margin-top: 2rem;
  padding: 0.75rem 1.5rem;
  background-color: #22439D;
  color: #fff;
  font-weight: 600;
  border-radius: 6px;
  text-decoration: none;
  transition: background 0.3s ease;
  font-size: 1rem;
}

.certificate-download-btn:hover {
  background-color: #1b3482;
}

.certificate-download-btn i {
  margin-right: 8px;
}

/* ✅ Responsive Styles */
@media (max-width: 768px) {
  .certificate-title {
    font-size: 2rem;
  }

  .certificate-subtitle {
    font-size: 1rem;
  }

  .certificate-frame {
    width: 100%;
    border-width: 6px;
    padding: 0.75rem;
  }

  .certificate-download-btn {
    font-size: 0.95rem;
    padding: 0.65rem 1.25rem;
  }
}

@media (max-width: 480px) {
  .certificate-title {
    font-size: 1.75rem;
  }

  .certificate-subtitle {
    font-size: 0.95rem;
  }

  .certificate-download-btn {
    width: 100%;
    max-width: 300px;
  }
}