/* ===== CERTIFICATES SECTION ===== */
.certificates-preview {
  max-width: 1400px;
  margin: 0 auto;
}

.certificates-preview-text {
  text-align: center;
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 3rem;
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.certificates-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto 3rem;
}

.certificate-gallery-item {
  position: relative;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  border: 2px solid var(--border-color);
  aspect-ratio: 16 / 11;
}

.certificate-gallery-item:hover {
  transform: translateY(-10px) scale(1.02);
  box-shadow: var(--shadow-xl);
  border-color: var(--accent-primary);
}

.certificate-gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.certificate-gallery-item:hover img {
  transform: scale(1.1);
}

.certificate-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent);
  padding: 2rem 1.5rem 1.5rem;
  transform: translateY(100%);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.certificate-gallery-item:hover .certificate-overlay {
  transform: translateY(0);
}

.certificate-overlay h3 {
  color: #ffffff;
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.3rem;
}

.certificate-overlay p {
  color: #e5e7eb;
  font-size: 0.9rem;
  font-weight: 400;
}

/* Certificate Modal (for future enhancement) */
.certificate-modal {
  display: none;
  position: fixed;
  z-index: 10000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.95);
  animation: fadeIn 0.3s ease;
}

.certificate-modal-content {
  position: relative;
  margin: 2% auto;
  max-width: 90%;
  max-height: 90vh;
  animation: zoomIn 0.3s ease;
}

.certificate-modal-content img {
  width: 100%;
  height: auto;
  border-radius: 10px;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes zoomIn {
  from { transform: scale(0.8); }
  to { transform: scale(1); }
}

.certificates-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(280px, 100%), 1fr));
  gap: 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.certificate-card {
  background: var(--card-bg);
  padding: 2rem;
  border-radius: 20px;
  box-shadow: var(--shadow-md);
  border: 2px solid var(--border-color);
  transition: all 0.3s ease;
  text-align: center;
}

.certificate-card:hover {
  transform: translateY(-5px) rotate(2deg);
  box-shadow: var(--shadow-xl);
  border-color: var(--accent-primary);
}

.certificate-icon {
  font-size: 3.5rem;
  margin-bottom: 1rem;
}

.certificate-content h3 {
  color: var(--text-primary);
  font-size: 1.3rem;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.certificate-content p {
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.certificate-issuer {
  color: var(--text-tertiary);
  font-size: 0.95rem;
  font-style: italic;
}

.certificate-date {
  display: inline-block;
  margin-top: 1rem;
  background: var(--bg-secondary);
  color: var(--accent-primary);
  padding: 0.4rem 1rem;
  border-radius: 20px;
  font-size: 0.9rem;
  font-weight: 500;
}