.expertise {
  padding-block: var(--space-24);
  position: relative;
}

@media (min-width: 768px) {
  .expertise {
    padding-block: var(--space-32);
  }
}

.expertise .grid-bg {
  --grid-color: var(--accent);
  --grid-size: 60px;
  --grid-opacity: 0.025;
}

.expertise__content {
  position: relative;
}

.expertise__header {
  margin-bottom: var(--space-16);
}

.expertise__eyebrow {
  color: var(--primary);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  margin-bottom: var(--space-3);
}

.expertise__title {
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--foreground);
  text-wrap: balance;
}

@media (min-width: 768px) {
  .expertise__title {
    font-size: var(--text-4xl);
  }
}

.expertise__lede {
  color: var(--muted-foreground);
  margin-top: var(--space-4);
  max-width: var(--measure-lg);
  line-height: var(--leading-relaxed);
}

.expertise__grid {
  display: grid;
  gap: var(--space-6);
}

@media (min-width: 768px) {
  .expertise__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.expertise-card {
  position: relative;
  background: var(--slate-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  overflow: hidden;
  transition: border-color 0.3s;
}

.expertise-card:hover {
  border-color: color-mix(in oklch, var(--primary) var(--tint-40), transparent);
}

.expertise-card__glow {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.3s;
  background: radial-gradient(
    ellipse 80% 60% at 50% 0%,
    color-mix(in oklch, var(--primary) var(--tint-6), transparent),
    transparent
  );
}

.expertise-card.is-accent .expertise-card__glow {
  background: radial-gradient(
    ellipse 80% 60% at 50% 0%,
    color-mix(in oklch, var(--accent) var(--tint-6), transparent),
    transparent
  );
}

.expertise-card:hover .expertise-card__glow {
  opacity: 1;
}

.expertise-card__header {
  position: relative;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.expertise-card__tag {
  display: inline-block;
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  padding: var(--space-1) var(--space-2-5);
  border-radius: var(--radius-sm);
  background: color-mix(in oklch, var(--primary) var(--tint-10), transparent);
  color: var(--primary);
}

.expertise-card.is-accent .expertise-card__tag {
  background: color-mix(in oklch, var(--accent) var(--tint-10), transparent);
  color: var(--accent);
}

.expertise-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-2-5);
  border-radius: var(--radius-md);
  width: fit-content;
  background: color-mix(in oklch, var(--primary) var(--tint-10), transparent);
  color: var(--primary);
}

.expertise-card.is-accent .expertise-card__icon {
  background: color-mix(in oklch, var(--accent) var(--tint-10), transparent);
  color: var(--accent);
}

.expertise-card__title {
  position: relative;
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--foreground);
  margin-bottom: var(--space-2);
}

.expertise-card__cert {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-1-5);
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--muted-foreground);
  background: var(--secondary);
  border: 1px solid var(--border);
  padding: var(--space-1) var(--space-2-5);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-3);
}

.expertise-card__cert .icon {
  color: var(--primary);
}

.expertise-card__pain {
  position: relative;
  font-size: var(--text-base-sm);
  font-weight: 500;
  margin-bottom: var(--space-3);
  color: color-mix(in oklch, var(--primary) var(--tint-80), transparent);
}

.expertise-card.is-accent .expertise-card__pain {
  color: color-mix(in oklch, var(--accent) var(--tint-80), transparent);
}

.expertise-card__desc {
  position: relative;
  color: var(--muted-foreground);
  font-size: var(--text-base-sm);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-5);
}

.expertise-card__langs {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-5);
}

.expertise-card__lang {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1-5);
  font-size: var(--text-base-sm);
  font-weight: 500;
  color: var(--accent);
  background: color-mix(in oklch, var(--accent) var(--tint-10), transparent);
  padding: var(--space-1-5) var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid color-mix(in oklch, var(--accent) var(--tint-20), transparent);
}

.expertise-card__bullets {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.expertise-card__bullets li {
  display: flex;
  align-items: flex-start;
  gap: var(--space-2);
  font-size: var(--text-base-sm);
  color: var(--muted-foreground);
}

.expertise-card__bullet-dot {
  margin-top: var(--space-1-5);
  width: var(--space-1-5);
  height: var(--space-1-5);
  border-radius: var(--radius-full);
  background: var(--primary);
  flex-shrink: 0;
}

.expertise-card.is-accent .expertise-card__bullet-dot {
  background: var(--accent);
}

.expertise__note {
  margin-top: var(--space-8);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  background: var(--slate-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  max-width: var(--measure-2xl);
}

.expertise__note-dot {
  /* centered against the first line of --leading-relaxed text, not the box top */
  margin-top: var(--space-2);
  width: var(--space-1-5);
  height: var(--space-1-5);
  border-radius: var(--radius-full);
  background: var(--primary);
  flex-shrink: 0;
}

.expertise__note p {
  font-size: var(--text-base-sm);
  color: var(--muted-foreground);
  line-height: var(--leading-relaxed);
}

.expertise__note strong {
  color: var(--foreground);
  font-weight: 500;
}