.certificate-showcase {
  overflow: hidden;
  background: #0a1220;
}

.certificate-showcase .section-heading {
  align-items: end;
}

.certificate-showcase-note {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 6px;
  margin: 24px 0;
  padding: 14px 16px;
  border: 1px solid rgba(139, 188, 255, .32);
  border-radius: 6px;
  color: var(--muted);
  background: rgba(139, 188, 255, .06);
  font-size: 13px;
  line-height: 1.55;
}

.certificate-showcase-note strong {
  color: var(--blue);
  font: 800 10px "JetBrains Mono", monospace;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.certificate-gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.certificate-card {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #0d1828;
  overflow: hidden;
  transition: transform .2s ease, border-color .2s ease;
}

.certificate-card:hover {
  transform: translateY(-4px);
  border-color: var(--blue);
}

.certificate-card > button {
  display: block;
  position: relative;
  width: 100%;
  padding: 0;
  border: 0;
  overflow: hidden;
  background: #07101f;
  color: inherit;
  cursor: zoom-in;
  text-align: initial;
}

.certificate-card > button:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: -2px;
}

.certificate-card img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 297 / 210;
  object-fit: cover;
  transition: transform .25s ease;
}

.certificate-card:hover img {
  transform: scale(1.018);
}

.certificate-card > button span {
  position: absolute;
  right: 10px;
  bottom: 10px;
  padding: 7px 9px;
  border: 1px solid rgba(255, 255, 255, .24);
  border-radius: 4px;
  color: #fff;
  background: rgba(7, 16, 31, .82);
  font: 700 9px "JetBrains Mono", monospace;
}

.certificate-card figcaption {
  display: grid;
  gap: 5px;
  padding: 16px;
}

.certificate-card figcaption strong {
  font-size: 17px;
}

.certificate-card figcaption small {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.certificate-preview-dialog {
  position: fixed;
  width: min(1280px, calc(100vw - 48px));
  max-width: none;
  max-height: calc(100vh - 48px);
  margin: auto;
  padding: 42px 12px 12px;
  border: 1px solid rgba(139, 188, 255, .42);
  border-radius: 10px;
  background: #07101f;
  box-shadow: 0 24px 80px rgba(0, 0, 0, .65);
  overflow: auto;
}

.certificate-preview-dialog::backdrop {
  background: rgba(2, 7, 16, .88);
  backdrop-filter: blur(5px);
}

.certificate-preview-dialog img {
  display: block;
  width: 100%;
  height: auto;
  max-height: calc(100vh - 104px);
  border-radius: 5px;
  object-fit: contain;
}

.certificate-preview-close {
  position: absolute;
  top: 8px;
  right: 10px;
  padding: 7px 11px;
  border: 1px solid rgba(255, 255, 255, .28);
  border-radius: 5px;
  color: #fff;
  background: #101d2f;
  font: 700 11px "JetBrains Mono", monospace;
  cursor: pointer;
}

.certificate-preview-close:hover,
.certificate-preview-close:focus-visible {
  border-color: var(--blue);
  color: var(--blue);
}

body.certificate-preview-open {
  overflow: hidden;
}

@media (max-width: 900px) {
  .certificate-gallery {
    grid-template-columns: 1fr;
  }

  .certificate-card {
    max-width: 680px;
    margin-inline: auto;
  }

  .certificate-showcase .section-heading {
    align-items: start;
  }
}

@media (max-width: 600px) {
  .certificate-preview-dialog {
    width: calc(100vw - 20px);
    max-height: calc(100vh - 20px);
    padding: 40px 6px 6px;
  }

  .certificate-preview-dialog img {
    max-height: calc(100vh - 76px);
  }
}

html[data-theme=light] .certificate-showcase {
  background: #eef4fa;
}

html[data-theme=light] .certificate-card {
  background: #fff;
}