/* ── Skills Section ── */
#skills {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.25rem;
}

.skill-category {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: all var(--transition-smooth);
  opacity: 0;
  transform: translateY(24px) scale(0.98);
  will-change: transform, box-shadow, border-color;
  position: relative;
  overflow: hidden;
}

.skill-category.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.skill-category::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: opacity 0.4s;
}

.skill-category:hover {
  border-color: var(--border-accent);
  box-shadow: var(--shadow-premium);
  transform: translateY(-4px) scale(1.01);
  background: var(--bg-secondary);
}

.skill-category:hover::before {
  opacity: 1;
}

.skill-cat-header {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 0.25rem;
}

.skill-cat-icon {
  width: 36px;
  height: 36px;
  background: var(--accent-light);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-smooth);
  border: 1px solid var(--border-accent);
}

.skill-category:hover .skill-cat-icon {
  background: var(--accent);
  transform: scale(1.08) rotate(5deg);
  border-color: rgba(255, 255, 255, 0.2);
}

.skill-cat-icon svg {
  width: 18px;
  height: 18px;
  color: var(--accent);
  transition: color var(--transition);
}

.skill-category:hover .skill-cat-icon svg {
  color: #fff;
}

.skill-cat-name {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--text-primary);
}

.skill-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-pill {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  background: var(--tag-bg);
  border: 1px solid var(--border);
  padding: 0.35rem 0.75rem;
  border-radius: 5px;
  transition: all var(--transition-smooth);
  cursor: default;
  will-change: transform, box-shadow, border-color;
}

.skill-pill:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-light);
  transform: translateY(-3px) scale(1.07);
  box-shadow: 0 6px 14px var(--accent-glow);
}