/* ================================================================
   sections/certifications.css
   Data-driven Certifications section with premium bento cards.
   ================================================================ */

.certifications {
  position: relative;
  overflow: hidden;
  padding: 100px 0;
  background:
    linear-gradient(135deg, rgba(232, 197, 71, 0.055), transparent 28%),
    linear-gradient(180deg, var(--bg-body), var(--bg-section-alt));
}

.certifications::before {
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(rgba(176, 196, 222, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(176, 196, 222, 0.025) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: linear-gradient(180deg, transparent, #000 14%, #000 86%, transparent);
}

.certifications::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(232, 197, 71, 0.45), transparent);
}

.certifications__shell {
  position: relative;
  z-index: 2;
}

.certifications__header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(180px, 260px);
  gap: 28px;
  align-items: end;
  margin-bottom: 48px;
}

.certifications__subtitle {
  max-width: 640px;
  margin-top: 14px;
  color: var(--text-muted);
  font-size: 0.93rem;
  line-height: 1.75;
}

.certifications__summary {
  min-height: 144px;
  border: 1px solid rgba(176, 196, 222, 0.18);
  background:
    linear-gradient(135deg, rgba(232, 197, 71, 0.12), transparent 42%),
    rgba(17, 29, 58, 0.7);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.certifications__summary-label,
.certifications__rail-kicker,
.cert-card__issuer,
.cert-card__date,
.cert-card__tag,
.cert-card__action {
  font-family: var(--font-display);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

.certifications__summary-label {
  color: var(--text-muted);
  font-size: 0.58rem;
}

.certifications__summary-count {
  color: var(--accent-primary);
  font-family: var(--font-serif);
  font-size: clamp(2.8rem, 5vw, 4.6rem);
  font-weight: 300;
  line-height: 0.9;
}

.certifications__layout {
  display: grid;
  grid-template-columns: minmax(220px, 0.36fr) minmax(0, 1fr);
  gap: 24px;
  align-items: stretch;
}

.certifications__rail {
  position: relative;
  overflow: hidden;
  min-height: 360px;
  border: 1px solid var(--border-color);
  background:
    linear-gradient(145deg, rgba(232, 197, 71, 0.08), transparent 32%),
    rgba(6, 14, 31, 0.54);
  padding: 30px 26px;
}

.certifications__rail::before {
  content: '';
  position: absolute;
  top: 28px;
  right: 24px;
  bottom: 28px;
  width: 1px;
  background: linear-gradient(var(--accent-primary), var(--accent-secondary), transparent);
  opacity: 0.52;
}

.certifications__rail-kicker {
  margin-bottom: 12px;
  color: var(--accent-primary);
  font-size: 0.56rem;
}

.certifications__rail-title {
  margin-bottom: 16px;
  color: var(--text-primary);
  font-family: var(--font-serif);
  font-size: clamp(1.7rem, 3vw, 2.35rem);
  font-weight: 300;
  line-height: 1.05;
}

.certifications__rail-copy {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.75;
}

.certifications__rail-steps {
  position: absolute;
  left: 26px;
  right: 42px;
  bottom: 26px;
  display: grid;
  gap: 10px;
}

.certifications__rail-steps span {
  position: relative;
  display: block;
  border-left: 1px solid rgba(232, 197, 71, 0.45);
  padding-left: 14px;
  color: var(--text-secondary);
  font-family: var(--font-display);
  font-size: 0.56rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.certifications__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 320px), 1fr));
  gap: 24px;
}

.cert-card {
  position: relative;
  overflow: hidden;
  display: grid;
  min-height: 100%;
  border: 1px solid var(--border-color);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.035), transparent 34%),
    var(--bg-card);
  box-shadow: 0 16px 46px rgba(3, 10, 26, 0.18);
  transition:
    transform 420ms cubic-bezier(0.18, 0.89, 0.32, 1.18),
    border-color 260ms ease,
    box-shadow 260ms ease;
}

.cert-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 320ms ease;
}

.cert-card::after {
  content: '';
  position: absolute;
  inset: -40% -55%;
  pointer-events: none;
  background: linear-gradient(110deg, transparent 36%, rgba(255, 255, 255, 0.12) 48%, transparent 60%);
  opacity: 0;
  transform: translateX(-35%) rotate(8deg);
}

.cert-card:hover,
.cert-card:focus-within {
  transform: translateY(-7px);
  border-color: rgba(232, 197, 71, 0.5);
  box-shadow: 0 24px 60px rgba(3, 10, 26, 0.32);
}

.cert-card:hover::before,
.cert-card:focus-within::before {
  transform: scaleX(1);
}

.cert-card:hover::after,
.cert-card:focus-within::after {
  animation: cert-card-sheen 820ms ease forwards;
}

.cert-card__media {
  position: relative;
  min-height: 240px;
  border-bottom: 1px solid var(--border-color);
  background:
    linear-gradient(135deg, rgba(232, 197, 71, 0.12), transparent 42%),
    linear-gradient(160deg, #08152d, #14264a);
}

.cert-card__image {
  width: 100%;
  height: 100%;
  min-height: 240px;
  object-fit: cover;
  filter: saturate(1.05) contrast(1.02);
  transition: transform 700ms ease, filter 700ms ease;
}

.cert-card:hover .cert-card__image,
.cert-card:focus-within .cert-card__image {
  transform: scale(1.025);
  filter: saturate(1.18) contrast(1.06);
}

.cert-preview {
  min-height: 240px;
  height: 100%;
  display: grid;
  place-items: center;
  padding: 28px;
  text-align: center;
}

.cert-preview__panel {
  width: min(100%, 340px);
  border: 1px solid rgba(232, 197, 71, 0.34);
  background: rgba(6, 14, 31, 0.42);
  padding: 26px 22px;
}

.cert-preview__mark {
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  margin: 0 auto 18px;
  border: 1px solid rgba(232, 197, 71, 0.72);
  color: var(--accent-primary);
  font-family: var(--font-display);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
}

.cert-preview__title {
  color: var(--text-primary);
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 300;
  line-height: 1.15;
}

.cert-preview__issuer {
  margin-top: 10px;
  color: var(--text-muted);
  font-family: var(--font-display);
  font-size: 0.56rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.cert-card__body {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding: clamp(24px, 4vw, 34px);
}

.cert-card__topline {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  align-items: center;
  justify-content: space-between;
}

.cert-card__issuer {
  color: var(--accent-primary);
  font-size: 0.58rem;
}

.cert-card__date {
  color: var(--text-muted);
  font-size: 0.56rem;
}

.cert-card__title {
  color: var(--text-primary);
  font-family: var(--font-serif);
  font-size: clamp(1.55rem, 3vw, 2.35rem);
  font-weight: 300;
  line-height: 1.05;
}

.cert-card__desc {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.75;
}

.cert-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin-top: auto;
}

.cert-card__tag {
  border: 1px solid rgba(176, 196, 222, 0.18);
  color: var(--text-secondary);
  font-size: 0.52rem;
  padding: 5px 9px;
}

.cert-card__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-top: 6px;
}

.cert-card__action {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid rgba(232, 197, 71, 0.45);
  color: var(--accent-primary);
  background: rgba(232, 197, 71, 0.06);
  padding: 10px 14px;
  font-size: 0.56rem;
  text-decoration: none;
  cursor: pointer;
  transition:
    color 220ms ease,
    background 220ms ease,
    border-color 220ms ease,
    transform 220ms cubic-bezier(0.18, 0.89, 0.32, 1.18);
}

.cert-card__action:hover,
.cert-card__action:focus-visible {
  border-color: var(--accent-primary);
  background: var(--accent-primary);
  color: var(--bg-dark);
  transform: translateY(-2px);
}

.cert-card__action--disabled {
  cursor: not-allowed;
  opacity: 0.58;
}

.certifications__empty {
  grid-column: 1 / -1;
  border: 1px dashed rgba(176, 196, 222, 0.35);
  background: rgba(17, 29, 58, 0.42);
  padding: clamp(28px, 5vw, 44px);
  text-align: center;
}

.certifications__empty h3 {
  margin-bottom: 8px;
  color: var(--text-primary);
  font-family: var(--font-serif);
  font-size: clamp(1.55rem, 3vw, 2.2rem);
  font-weight: 300;
}

.certifications__empty p {
  max-width: 520px;
  margin: 0 auto;
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.7;
}

@keyframes cert-card-sheen {
  0% {
    opacity: 0;
    transform: translateX(-35%) rotate(8deg);
  }

  38% {
    opacity: 1;
  }

  100% {
    opacity: 0;
    transform: translateX(35%) rotate(8deg);
  }
}

@media (max-width: 1024px) {
  .certifications__layout {
    grid-template-columns: 1fr;
  }

  .certifications__rail {
    min-height: auto;
  }

  .certifications__rail-steps {
    position: static;
    margin-top: 26px;
  }
}

@media (max-width: 768px) {
  .certifications {
    padding: 84px 0;
  }

  .certifications__header {
    grid-template-columns: 1fr;
  }

  .certifications__summary {
    min-height: 118px;
  }

}

@media (max-width: 480px) {
  .certifications {
    padding: 72px 0;
  }

  .certifications__header,
  .certifications__layout,
  .certifications__grid {
    gap: 18px;
  }

  .certifications__summary,
  .certifications__rail,
  .cert-card__body {
    padding: 22px 18px;
  }

  .cert-card__footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .cert-card__action {
    width: 100%;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .cert-card:hover::after,
  .cert-card:focus-within::after {
    animation: none;
  }
}