/* Certificates gallery */

.cert-page {
  padding: calc(var(--header-height) + 2rem) 0 4rem;
}

.cert-container {
  max-width: 960px;
  margin: 0 auto;
}

.cert-back {
  display: inline-block;
  font-size: 0.9375rem;
  color: var(--color-purple);
  text-decoration: none;
  margin-bottom: 1.5rem;
}

.cert-back:hover {
  text-decoration: underline;
}

.cert-header {
  margin-bottom: 2rem;
}

body[data-page="certificates"] .cert-header h1 {
  font-family: var(--font-body);
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 400;
  line-height: 1.3;
  color: #000;
  margin: 0 0 0.75rem;
}

.cert-intro {
  font-size: 1.125rem;
  line-height: 1.6;
  color: var(--color-gray);
  margin: 0;
  max-width: 720px;
}

.cert-viewport {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.cert-detail {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  gap: clamp(1.5rem, 3vw, 2.5rem);
  align-items: start;
  padding: 1.5rem;
  border: 1px solid #e0e0e0;
  background: var(--color-white);
}

.cert-detail-image-wrap {
  background: #f8f6fb;
  border: 1px solid rgba(40, 0, 100, 0.08);
  overflow: hidden;
  min-height: 280px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cert-detail-image {
  display: block;
  width: 100%;
  height: auto;
  max-height: 520px;
  object-fit: contain;
}

.cert-detail-copy {
  min-width: 0;
}

body[data-page="certificates"] .cert-detail-title {
  font-family: var(--font-body);
  font-size: 1.75rem;
  font-weight: 400;
  line-height: 1.35;
  color: #000;
  margin: 0 0 1rem;
}

.cert-detail-summary {
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--color-text);
  margin: 0 0 1.25rem;
}

.cert-detail-bullets {
  margin: 0;
  padding-left: 1.25rem;
}

.cert-detail-bullets li {
  margin-bottom: 0.65rem;
  line-height: 1.55;
  color: var(--color-text);
}

.cert-detail-bullets li:last-child {
  margin-bottom: 0;
}

.cert-thumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.cert-thumb {
  flex: 0 0 auto;
  width: 110px;
  height: 110px;
  padding: 0;
  border: 2px solid transparent;
  border-radius: 4px;
  overflow: hidden;
  background: #f5f0fa;
  cursor: pointer;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.cert-thumb:hover,
.cert-thumb:focus-visible {
  outline: none;
  border-color: rgba(128, 21, 232, 0.45);
}

.cert-thumb.active {
  border-color: var(--color-purple);
  box-shadow: 0 0 0 1px var(--color-purple);
}

.cert-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

@media (max-width: 768px) {
  .cert-detail {
    grid-template-columns: 1fr;
    padding: 1rem;
  }

  .cert-detail-image-wrap {
    min-height: 220px;
  }

  .cert-thumbs {
    gap: 0.5rem;
  }

  .cert-thumb {
    width: 72px;
    height: 72px;
  }
}