/* ==========================================================================
   FAQ + PROFESSIONAL CERTIFICATIONS
   ========================================================================== */

/* ---- Certificates ---- */
.certificates {
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}

.certificates__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: clamp(1rem, 2.5vw, 1.5rem);
}

.certificate-card {
  min-width: 0;
}

.certificate-card__trigger {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: rgba(14, 14, 14, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  cursor: pointer;
  text-align: left;
  overflow: hidden;
  transition:
    transform 0.45s cubic-bezier(0.22, 1, 0.36, 1),
    border-color 0.45s cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

.certificate-card__trigger:hover,
.certificate-card__trigger:focus-visible {
  transform: translateY(-4px);
  border-color: rgba(182, 255, 0, 0.35);
  box-shadow:
    0 0 0 1px rgba(182, 255, 0, 0.12),
    0 0 40px rgba(182, 255, 0, 0.14),
    0 18px 40px rgba(0, 0, 0, 0.45);
  outline: none;
}

.certificate-card__frame {
  position: relative;
  aspect-ratio: 4 / 3;
  background: linear-gradient(145deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
  padding: clamp(0.65rem, 1.5vw, 0.85rem);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.certificate-card__frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(182, 255, 0, 0.06), transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.certificate-card__img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center;
  filter: drop-shadow(0 8px 20px rgba(0, 0, 0, 0.35));
  transition: transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

.certificate-card__trigger:hover .certificate-card__img,
.certificate-card__trigger:focus-visible .certificate-card__img {
  transform: scale(1.03);
}

.certificate-card__meta {
  padding: 0.85rem 1rem 1rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.certificate-card__badge {
  display: inline-flex;
  align-self: flex-start;
  font-size: 0.58rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 0.25rem 0.55rem;
  border: 1px solid rgba(182, 255, 0, 0.28);
  border-radius: 100px;
  background: rgba(182, 255, 0, 0.06);
}

.certificate-card__title {
  font-family: var(--font-display);
  font-size: clamp(1rem, 2vw, 1.15rem);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  line-height: 1.15;
  color: var(--text-primary);
}

.certificate-card__hint {
  font-size: 0.68rem;
  color: var(--text-muted);
  letter-spacing: 0.04em;
}

/* ---- Certificate Lightbox ---- */
.cert-lightbox {
  position: fixed;
  inset: 0;
  z-index: 1100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: clamp(1rem, 4vw, 2rem);
}

.cert-lightbox[hidden] {
  display: none !important;
}

.cert-lightbox:not([hidden]) {
  display: flex;
}

.cert-lightbox__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  opacity: 0;
  transition: opacity 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.cert-lightbox.is-open .cert-lightbox__backdrop {
  opacity: 1;
}

.cert-lightbox__dialog {
  position: relative;
  z-index: 1;
  width: min(100%, 920px);
  max-height: min(92vh, 720px);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  padding: clamp(1rem, 3vw, 1.5rem);
  background: rgba(12, 12, 12, 0.95);
  border: 1px solid rgba(182, 255, 0, 0.2);
  border-radius: var(--radius-lg);
  box-shadow:
    0 0 60px rgba(182, 255, 0, 0.1),
    0 24px 64px rgba(0, 0, 0, 0.65);
  opacity: 0;
  transform: scale(0.96) translateY(12px);
  transition:
    opacity 0.45s cubic-bezier(0.22, 1, 0.36, 1),
    transform 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

.cert-lightbox.is-open .cert-lightbox__dialog {
  opacity: 1;
  transform: scale(1) translateY(0);
}

.cert-lightbox__close {
  position: absolute;
  top: 0.65rem;
  right: 0.65rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: rgba(17, 17, 17, 0.9);
  color: var(--text-primary);
  font-size: 1.35rem;
  line-height: 1;
  cursor: pointer;
  transition: var(--transition-smooth);
  z-index: 2;
}

.cert-lightbox__close:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.cert-lightbox__img-wrap {
  width: 100%;
  max-height: min(72vh, 580px);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
}

.cert-lightbox__img {
  max-width: 100%;
  max-height: min(72vh, 580px);
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
}

.cert-lightbox__caption {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-secondary);
  text-align: center;
  margin: 0;
}

/* ---- FAQ ---- */
.faq {
  background: var(--bg-main);
  position: relative;
  overflow: hidden;
}

.faq__list {
  max-width: 780px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.faq__item {
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: rgba(14, 14, 14, 0.65);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  overflow: hidden;
  transition:
    border-color 0.4s cubic-bezier(0.22, 1, 0.36, 1),
    box-shadow 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.faq__item:hover {
  border-color: rgba(182, 255, 0, 0.18);
}

.faq__item.is-open {
  border-color: rgba(182, 255, 0, 0.32);
  box-shadow: 0 0 32px rgba(182, 255, 0, 0.08);
}

.faq__question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem 1.25rem;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: clamp(0.88rem, 1.8vw, 0.98rem);
  font-weight: 600;
  letter-spacing: 0.02em;
  text-align: left;
  cursor: pointer;
  transition: color 0.35s cubic-bezier(0.22, 1, 0.36, 1);
}

.faq__question:hover,
.faq__item.is-open .faq__question {
  color: var(--accent);
}

.faq__icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(182, 255, 0, 0.25);
  border-radius: 50%;
  color: var(--accent);
  font-size: 1.1rem;
  line-height: 1;
  transition:
    transform 0.4s cubic-bezier(0.22, 1, 0.36, 1),
    background 0.4s cubic-bezier(0.22, 1, 0.36, 1);
}

.faq__item.is-open .faq__icon {
  transform: rotate(45deg);
  background: rgba(182, 255, 0, 0.1);
}

.faq__answer-wrap {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 0.45s cubic-bezier(0.22, 1, 0.36, 1);
}

.faq__item.is-open .faq__answer-wrap {
  grid-template-rows: 1fr;
}

.faq__answer {
  overflow: hidden;
}

.faq__answer p {
  margin: 0;
  padding: 0 1.25rem 1.15rem;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-secondary);
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding-top: 0.85rem;
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .certificates__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .certificates__grid {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin-inline: auto;
  }

  .faq__question {
    padding: 1rem 1.1rem;
    font-size: 0.88rem;
  }

  .faq__answer p {
    padding: 0.75rem 1.1rem 1rem;
    font-size: 0.86rem;
  }

  .cert-lightbox__dialog {
    padding: 1rem;
    max-height: 90vh;
  }
}

@media (prefers-reduced-motion: reduce) {
  .certificate-card__trigger:hover,
  .certificate-card__trigger:focus-visible {
    transform: none;
  }

  .faq__answer-wrap {
    transition-duration: 0.01ms;
  }

  .cert-lightbox__dialog,
  .cert-lightbox__backdrop {
    transition-duration: 0.01ms;
  }
}