body {
  margin: 0;
  font-family: "Poppins", sans-serif;
  background: linear-gradient(135deg, #0f0f0f, #1a1a1a, #000);
  color: #fff;
  overflow-x: hidden;
}

/* Heading Section */
#hhh {
  text-align: center;
  padding: 40px 0 20px 0;
}

#hhh h1 {
  font-size: 2.8rem;
  margin: 0;
  letter-spacing: 2px;
  text-transform: uppercase;
  background: linear-gradient(90deg, #1cc88a, #4e73df, #ff6ec7);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: gradient-shift 5s infinite alternate;
}

@keyframes gradient-shift {
  from { background-position: left; }
  to   { background-position: right; }
}

/* Certificates Container */
.certificate-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
  padding: 40px 20px;
  max-width: 1200px;
  margin: 0 auto;
}

/* Certificate Card */
.certificate-item {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 15px;
  padding: 15px;
  text-align: center;
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border: 1px solid rgba(255,255,255,0.15);
  box-shadow: 0 4px 15px rgba(0,0,0,0.4);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  opacity: 0;
  transform: translateY(40px);
}

.certificate-item:hover {
  transform: translateY(-10px) scale(1.05);
  box-shadow: 0 8px 25px rgba(78, 115, 223, 0.5),
              0 8px 35px rgba(28, 200, 138, 0.4);
  border: 1px solid rgba(255,255,255,0.3);
}

/* Certificate Image */
.certificate-item img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 0 15px rgba(0,0,0,0.3);
  transition: transform 0.4s ease;
}

.certificate-item:hover img {
  transform: scale(1.05);
}

/* Certificate Caption */
.certificate-item p {
  margin-top: 12px;
  font-size: 1rem;
  font-weight: 600;
  color: #f1f1f1;
  letter-spacing: 0.5px;
}

/* ------------------- Scroll Animation ------------------- */
.show {
  opacity: 1 !important;
  transform: translateY(0) !important;
  transition: all 0.8s ease-out;
}

/* ------------------- Responsive Design ------------------- */

/* Tablets */
@media (max-width: 1024px) {
  #hhh h1 { font-size: 2.3rem; }
}

/* Mobiles */
@media (max-width: 768px) {
  #hhh h1 { font-size: 2rem; }
  .certificate-container {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }
  .certificate-item p { font-size: 0.9rem; }
}

/* Small Mobiles */
@media (max-width: 480px) {
  #hhh h1 { font-size: 1.6rem; }
  .certificate-container {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}