:root {
  --cert-navy: #071b33;
  --cert-ink: #12253f;
  --cert-gold: #c89a3a;
  --cert-line: rgba(7, 27, 51, 0.12);
  --cert-text: #4c5f76;
  --cert-cloud: #f6f8fb;
}

.certifications-section {
  position: relative;
  padding: 44px 0 96px;
  background:
    radial-gradient(circle at top left, rgba(200, 154, 58, 0.12), transparent 28%),
    radial-gradient(circle at bottom right, rgba(7, 27, 51, 0.06), transparent 30%),
    linear-gradient(180deg, #f7f9fc 0%, #eef3f8 100%);
}

.certifications-section::before,
.certifications-section::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  pointer-events: none;
  filter: blur(26px);
  opacity: 0.45;
}

.certifications-section::before {
  width: 220px;
  height: 220px;
  left: -80px;
  top: 36px;
  background: rgba(200, 154, 58, 0.18);
}

.certifications-section::after {
  width: 300px;
  height: 300px;
  right: -120px;
  bottom: 40px;
  background: rgba(7, 27, 51, 0.08);
}

.certifications-section > * {
  position: relative;
  z-index: 1;
}

.cert-intro {
  width: min(1200px, calc(100% - 32px));
  margin: 0 auto;
  padding: 0 0 28px;
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(280px, 0.8fr);
  gap: 24px;
}

.cert-hero,
.cert-side {
  border-radius: 28px;
  border: 1px solid rgba(7, 27, 51, 0.08);
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 22px 48px rgba(7, 27, 51, 0.08);
  backdrop-filter: blur(10px);
}

.cert-hero {
  padding: 34px;
}

.cert-kicker {
  display: inline-flex;
  align-items: center;
  margin: 0 0 12px;
  padding: 10px 16px;
  border-radius: 999px;
  background: rgba(7, 27, 51, 0.06);
  color: var(--cert-navy);
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-size: 0.74rem;
}

.cert-hero h1 {
  margin: 0 0 14px;
  color: var(--cert-navy);
  font-family: "Source Serif 4", serif;
  font-size: clamp(2rem, 3vw, 3.4rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
}

.cert-hero p {
  margin: 0;
  color: var(--cert-text);
  line-height: 1.85;
  font-size: 1.02rem;
}

.cert-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin-top: 24px;
}

.cert-stat {
  padding: 16px 14px;
  border-radius: 20px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(248, 250, 252, 0.96));
  border: 1px solid rgba(7, 27, 51, 0.06);
}

.cert-stat strong {
  display: block;
  color: var(--cert-navy);
  font-size: 1.6rem;
  line-height: 1;
}

.cert-stat span {
  display: block;
  margin-top: 8px;
  color: var(--cert-text);
  font-size: 0.92rem;
  line-height: 1.45;
}

.cert-side {
  padding: 28px;
  align-self: stretch;
}

.cert-side h2 {
  margin: 0 0 14px;
  color: var(--cert-ink);
  font-size: 1.4rem;
}

.cert-side ul {
  margin: 0;
  padding-left: 20px;
  color: var(--cert-text);
  line-height: 1.8;
}

.cert-gallery-head {
  width: min(1200px, calc(100% - 32px));
  margin: 0 auto;
  padding: 12px 0 18px;
}

.cert-gallery-head h2 {
  margin: 0 0 6px;
  color: var(--cert-ink);
  font-size: 1.55rem;
}

.cert-gallery-head p {
  margin: 0;
  color: var(--cert-text);
  line-height: 1.7;
}

.cert-grid {
  width: min(1200px, calc(100% - 32px));
  margin: 0 auto;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  align-items: start;
}

.cert-item {
  position: relative;
  border-radius: 28px;
  overflow: hidden;
  background: #fff;
  border: 1px solid rgba(7, 27, 51, 0.08);
  box-shadow: 0 18px 40px rgba(7, 27, 51, 0.1);
  cursor: pointer;
  transition: transform 0.28s ease, box-shadow 0.28s ease;
}

.cert-item:hover,
.cert-item:focus-visible {
  transform: translateY(-6px);
  box-shadow: 0 24px 54px rgba(7, 27, 51, 0.14);
  outline: none;
}

.cert-item img {
  display: block;
  width: 100%;
  height: auto;
  background: #f1efe7;
}

.cert-caption {
  padding: 18px 18px 20px;
  border-top: 1px solid rgba(7, 27, 51, 0.06);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 250, 252, 0.98));
}

.cert-type {
  display: inline-flex;
  align-items: center;
  margin-bottom: 10px;
  padding: 7px 12px;
  border-radius: 999px;
  background: rgba(200, 154, 58, 0.14);
  color: var(--cert-navy);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.cert-caption div {
  color: var(--cert-ink);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.35;
}

.cert-subtitle {
  display: block;
  margin-top: 8px;
  color: var(--cert-text);
  font-size: 0.92rem;
  line-height: 1.4;
}

.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(3, 10, 20, 0.82);
  backdrop-filter: blur(10px);
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal-content {
  position: relative;
  max-width: min(980px, 94vw);
  max-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal-content img {
  display: block;
  max-width: 100%;
  max-height: 88vh;
  border-radius: 24px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5);
}

.close-btn {
  position: absolute;
  top: -14px;
  right: -14px;
  width: 44px;
  height: 44px;
  border: 0;
  border-radius: 999px;
  background: #fff;
  color: var(--cert-navy);
  font-size: 1.4rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.18);
}

.nav-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 52px;
  height: 52px;
  border: 0;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  color: var(--cert-navy);
  font-size: 1.8rem;
  cursor: pointer;
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.18);
}

.nav-left {
  left: 20px;
}

.nav-right {
  right: 20px;
}

@media (max-width: 1100px) {
  .cert-intro {
    grid-template-columns: 1fr;
  }

  .cert-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 768px) {
  .certifications-section {
    padding: 56px 0 92px;
  }

  .cert-hero,
  .cert-side {
    padding: 22px;
    border-radius: 24px;
  }

  .cert-stats {
    grid-template-columns: 1fr;
  }

  .cert-grid {
    grid-template-columns: 1fr;
    gap: 18px;
  }

  .nav-arrow {
    width: 46px;
    height: 46px;
    font-size: 1.6rem;
  }

  .nav-left {
    left: 8px;
  }

  .nav-right {
    right: 8px;
  }
}