.certificates,
.certificates * {
  box-sizing: border-box;
}

.certificates {
  --cert-blue: var(--primary-color, #008bc4);
  background: #efefef;
  padding-block: 0 clamp(2.5rem, 6vw, 4.5rem);
}

.certificates_inner {
  max-width: 1160px;
  margin: 0 auto;
  padding-inline: clamp(1rem, 3vw, 2.5rem);
}

.certificates_title {
  margin: 0 0 1rem;
  text-align: center;
  font-family: "Inter", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-size: clamp(2rem, 3.6vw, 3.4rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--cert-blue);
}

.certificates_rule {
  width: min(100%, 48rem);
  height: 4px;
  margin: 0 auto clamp(2rem, 5vw, 3rem);
  border-radius: 2px;
  background: var(--cert-blue);
}

.certificates_grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1rem, 2vw, 1.75rem);
  list-style: none;
  margin: 0;
  padding: 0;
}

.certificates_item-button {
  width: 100%;
  border: 0;
  background: transparent;
  padding: 0;
  cursor: pointer;
}

.certificates_item-image {
  display: block;
  width: 100%;
  max-width: 300px;
  margin: 0 auto;
  height: auto;
  padding: 8px;
  border: 4px solid var(--cert-blue);
  border-radius: 20px;
  background: #ffffff;
  box-shadow: 0 0 0 4px #ffffff;
  transition: transform 0.22s ease, box-shadow 0.22s ease;
}

.certificates_item-button:hover .certificates_item-image,
.certificates_item-button:focus-visible .certificates_item-image {
  transform: translateY(-5px) scale(1.02);
  box-shadow: 0 0 0 4px #ffffff, 0 12px 24px rgba(0, 139, 196, 0.32);
}

.certificates_item-button:focus-visible {
  outline: none;
}

.certificate-viewer {
  position: fixed;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  background: rgba(10, 26, 35, 0.8);
  z-index: 999;
}

.certificate-viewer.is-open {
  display: flex;
}

.certificate-viewer_content {
  position: relative;
  max-width: min(94vw, 1100px);
  max-height: 92vh;
}

.certificate-viewer_image {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: 92vh;
  height: auto;
  border-radius: 6px;
  box-shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
}

.certificate-viewer_close {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  border: 0;
  border-radius: 999px;
  font-size: 0;
  background: var(--primary-color, #008bc4);
  cursor: pointer;
}

.certificate-viewer_close::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 1.05rem;
  height: 0.24rem;
  border-radius: 999px;
  background: #ffffff;
  transform: translate(-50%, -50%) rotate(45deg);
}

.certificate-viewer_close::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 1.05rem;
  height: 0.24rem;
  border-radius: 999px;
  background: #ffffff;
  transform: translate(-50%, -50%) rotate(-45deg);
}

@media (max-width: 860px) {
  .certificates_grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }
}