/* ==========================================================================
   Section — Certifications (base structure)
   ========================================================================== */
.certifications-grid { display: flex; flex-direction: column; gap: 2rem; }

/* Issuer group */
.cert-group {
  background: rgba(var(--color-secondary-rgb), 0.04);
  border: 1px solid rgba(var(--color-secondary-rgb), 0.1);
  border-radius: var(--card-radius-lg);
  padding: 1.5rem;
  transition: border-color 0.3s ease;
}

.cert-group:hover { border-color: rgba(var(--color-secondary-rgb), 0.25); }

.cert-group-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid rgba(var(--color-secondary-rgb), 0.1);
}

.cert-group-logo {
  width: 32px; height: 32px; border-radius: 8px;
  background: rgba(255, 255, 255, 0.95);
  display: flex; align-items: center; justify-content: center;
  overflow: hidden; padding: 4px; flex-shrink: 0;
}

.cert-group-logo img { width: 100%; height: 100%; object-fit: contain; }

.cert-group-logo-fallback {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.9rem; font-weight: 700; color: var(--color-secondary);
}

.cert-group-header h3 { color: var(--color-text); font-size: 1rem; font-weight: 600; flex: 1; }

.cert-group-count {
  background: rgba(var(--color-accent-rgb), 0.1);
  color: var(--color-accent);
  font-size: 0.7rem; font-weight: 600;
  padding: 0.2rem 0.6rem; border-radius: 20px;
  border: 1px solid rgba(var(--color-accent-rgb), 0.15);
}

/* Cards inside a group */
.cert-group-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1rem;
}

.cert-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: 12px;
  padding: 0.85rem;
  display: flex; gap: 0.85rem; align-items: flex-start;
  transition: var(--transition-base);
}

.cert-card:hover {
  background: rgba(var(--color-secondary-rgb), 0.08);
  border-color: rgba(var(--color-secondary-rgb), 0.2);
  transform: translateY(-2px);
}

/* Thumbnail */
.cert-thumb {
  width: 80px; height: 100px; border-radius: 8px;
  overflow: hidden; flex-shrink: 0; position: relative;
  background: rgba(var(--color-secondary-rgb), 0.08);
  border: 1px solid rgba(var(--color-secondary-rgb), 0.15);
  display: block; text-decoration: none;
}

.cert-thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top center; transition: transform 0.3s ease; }
.cert-thumb:hover img { transform: scale(1.05); }

.cert-thumb-overlay {
  position: absolute; inset: 0;
  background: rgba(var(--color-secondary-rgb), 0.5);
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 1.1rem; opacity: 0;
  transition: opacity 0.3s ease; border-radius: 8px;
}

.cert-thumb:hover .cert-thumb-overlay { opacity: 1; }

.cert-thumb-empty {
  display: flex; align-items: center; justify-content: center;
  color: rgba(var(--color-secondary-rgb), 0.4); font-size: 1.8rem;
}

/* Card details */
.cert-details { flex: 1; min-width: 0; }

.cert-card h4 { color: var(--color-text); font-size: 0.88rem; font-weight: 600; line-height: 1.35; margin-bottom: 0.3rem; }

.cert-meta { display: flex; align-items: center; gap: 0.5rem; margin-bottom: 0.4rem; flex-wrap: wrap; }

.cert-year {
  color: var(--color-text-subtle); font-size: 0.72rem;
  background: rgba(var(--color-accent-rgb), 0.08);
  padding: 0.12rem 0.5rem; border-radius: 20px;
  border: 1px solid rgba(var(--color-accent-rgb), 0.12);
}

.cert-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; }

.cert-link {
  font-size: 0.7rem; font-weight: 500; text-decoration: none;
  display: inline-flex; align-items: center; gap: 0.25rem;
  padding: 0.15rem 0.5rem; border-radius: 20px; transition: all 0.2s ease;
}

.cert-link i { font-size: 0.6rem; }

.cert-verify {
  color: var(--color-secondary);
  border: 1px solid rgba(var(--color-secondary-rgb), 0.2);
  background: rgba(var(--color-secondary-rgb), 0.06);
}

.cert-verify:hover { color: #fff; background: rgba(var(--color-secondary-rgb), 0.3); border-color: rgba(var(--color-secondary-rgb), 0.5); }

.cert-pdf { color: #e05555; border: 1px solid rgba(224, 85, 85, 0.2); background: rgba(224, 85, 85, 0.06); }
.cert-pdf:hover { color: #fff; background: rgba(224, 85, 85, 0.3); border-color: rgba(224, 85, 85, 0.5); }