/* Certificates Section - Modern Enhanced Layout */
#certificates {
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  padding: 80px 0 100px 0;
  width: 100%;
  box-sizing: border-box;
  position: relative;
}

#certificates::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 25% 25%, rgba(249, 134, 26, 0.05) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(48, 44, 89, 0.05) 0%, transparent 50%);
  pointer-events: none;
}

.certificates-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 20px;
  width: 100%;
  box-sizing: border-box;
  position: relative;
  z-index: 1;
}

#certificates .section-header {
  text-align: center;
  margin-bottom: 60px;
  max-width: 100%;
  margin-left: auto;
  margin-right: auto;
}

#certificates .section-header .col-full {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 20px;
}

#certificates .subhead {
  color: #f9861a;
  font-size: 1.4rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 3px;
  margin-bottom: 15px;
  display: block;
  position: relative;
}

#certificates .subhead::after {
  content: "";
  position: absolute;
  bottom: -8px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, #f9861a, #ff6b35);
}

#certificates .display-1 {
  font-size: 3.2rem;
  line-height: 1.2;
  color: #1a1a1a;
  margin: 0 0 25px;
  font-weight: 700;
  background: linear-gradient(135deg, #1a1a1a 0%, #333 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

#certificates .lead {
  font-family: "poppins-regular", sans-serif;
  font-size: 1.7rem;
  line-height: 1.6;
  color: #555;
  max-width: 800px;
  margin: 0 auto;
}

.certificates-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 30px;
  padding: 40px 0;
  margin: 0;
  width: 100%;
  max-width: 1100px;
  margin-left: auto;
  margin-right: auto;
}

.certificate-card {
  background: #ffffff;
  border-radius: 16px;
  overflow: hidden;
  box-shadow: 
    0 8px 30px rgba(0, 0, 0, 0.08),
    0 4px 16px rgba(0, 0, 0, 0.04);
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  display: flex;
  flex-direction: column;
  height: 100%;
  min-height: 400px;
  border: 1px solid rgba(249, 134, 26, 0.1);
  position: relative;
}

.certificate-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, #f9861a, #ff6b35, #f9861a);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.certificate-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 
    0 20px 40px rgba(249, 134, 26, 0.15),
    0 8px 24px rgba(0, 0, 0, 0.1);
}

.certificate-card:hover::before {
  opacity: 1;
}

.certificate-image {
  position: relative;
  padding-top: 65%;
  overflow: hidden;
  background: linear-gradient(135deg, #f8f9fa 0%, #fff 100%);
}

.certificate-image img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  padding: 20px;
  background: #fff;
  transition: transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

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

.certificate-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(249, 134, 26, 0.9) 0%, rgba(48, 44, 89, 0.9) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  backdrop-filter: blur(4px);
}

.certificate-card:hover .certificate-overlay {
  opacity: 1;
  visibility: visible;
}

.view-certificate {
  color: white;
  background: rgba(255, 255, 255, 0.2);
  padding: 12px 24px;
  border-radius: 50px;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: all 0.3s ease;
  border: 2px solid rgba(255, 255, 255, 0.3);
  backdrop-filter: blur(10px);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.view-certificate i {
  font-size: 1em;
  transition: transform 0.3s ease;
}

.view-certificate:hover {
  background: rgba(255, 255, 255, 0.3);
  border-color: rgba(255, 255, 255, 0.5);
  transform: translateY(-2px);
}

.view-certificate:hover i {
  transform: scale(1.2);
}

.certificate-info {
  padding: 25px;
  text-align: center;
  flex-grow: 1;
  display: flex;
  flex-direction: column;
  background: linear-gradient(180deg, #fff 0%, #fafafa 100%);
}

.certificate-title {
  font-size: 1.3rem;
  font-weight: 700;
  color: #1a1a1a;
  margin: 0 0 12px;
  line-height: 1.4;
  font-family: "Gothic A1", sans-serif;
}

.certificate-issuer {
  font-size: 1rem;
  color: #666;
  margin-bottom: 10px;
  font-weight: 500;
}

.certificate-date {
  font-size: 0.9rem;
  color: #f9861a;
  margin-top: auto;
  padding-top: 15px;
  border-top: 1px solid #eee;
  font-weight: 600;
  position: relative;
}

.certificate-date::before {
  content: "📅";
  margin-right: 6px;
}

/* Enhanced Responsive Design */
@media (max-width: 1200px) {
  .certificates-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 28px;
    max-width: 950px;
  }
}

@media (max-width: 900px) {
  .certificates-grid {
    max-width: 850px;
    gap: 25px;
  }
}

@media (max-width: 768px) {
  #certificates {
    padding: 60px 0;
  }
  
  #certificates .display-1 {
    font-size: 2.8rem;
  }
  
  #certificates .lead {
    font-size: 1.5rem;
  }
  
  .certificates-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    max-width: 100%;
  }
  
  .certificate-info {
    padding: 20px;
  }
  
  .certificate-title {
    font-size: 1.2rem;
  }
}

@media (max-width: 576px) {
  .certificates-container {
    padding: 0 15px;
  }
  
  .certificates-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
    gap: 20px;
  }
  
  #certificates .display-1 {
    font-size: 2.4rem;
  }
  
  #certificates .section-header .col-full {
    padding: 0 15px;
  }
  
  .certificate-image {
    padding-top: 60%;
  }
  
  .view-certificate {
    padding: 10px 20px;
    font-size: 0.85rem;
  }
  
  .certificate-title {
    font-size: 1.2rem;
  }
  
  .certificate-info {
    padding: 18px;
  }
}

/* Animation for scroll reveals */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.certificate-card[data-aos="fade-up"] {
  animation: fadeInUp 0.6s ease forwards;
}

/* Loading state for lazy images */
.certificate-image img[loading="lazy"] {
  opacity: 0;
  transition: opacity 0.3s ease;
}

.certificate-image img[loading="lazy"].loaded {
  opacity: 1;
}