.skills-grid {
  column-count: 2;
  column-gap: 3rem;
  position: relative;
}

.skills-category {
  font-size: .65rem;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--color-accent-alt);
  border-left: 2px solid var(--color-accent);
  padding-left: .7rem;
  margin-bottom: .8rem;
}

.skills-block {
  display: flex;
  flex-direction: column;
  gap: 0;
  break-inside: avoid;
  margin-bottom: 0;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .5s, transform .5s;
}

.skills-block.visible {
  opacity: 1;
  transform: none;
}

.skills-separator {
  height: 1px;
  margin: 1.2rem 0;
  break-inside: avoid;
  position: relative;
  overflow: hidden;
  opacity: 0;
  transform: scaleX(0.95);
  transition: opacity .6s cubic-bezier(.4, 0, .2, 1), transform .6s cubic-bezier(.4, 0, .2, 1);
}

.skills-separator.visible {
  opacity: 1;
  transform: scaleX(1);
}

.skills-separator::after {
  content: '';
  position: absolute;
  top: 0; left: -200%;
  width: 200%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent 0%,
    var(--color-accent) 25%,
    var(--color-secondary) 50%,
    var(--color-accent) 75%,
    transparent 100%
  );
  filter: drop-shadow(0 0 3px var(--color-accent));
  opacity: .6;
  animation: separatorScan 3s linear infinite;
}

@keyframes separatorScan {
  0%   { left: -200%; }
  100% { left: 100%; }
}

.skills-block-content {
  display: grid;
  gap: .6rem;
  align-items: start;
}

.skill-item {
  background: var(--color-surface);
  border: 1px solid var(--color-accent-glow);
  border-radius: 3px;
  padding: .7rem .9rem;
  display: flex;
  flex-direction: column;
  gap: .5rem;
  position: relative;
  height: fit-content;
  transition: border-color .25s, box-shadow .25s;
  overflow: hidden;
}

.skill-item:hover {
  border-color: var(--color-accent-glow);
  box-shadow:
    0 0 10px var(--color-accent-glow),
    0 0 24px var(--color-secondary-glow);
}

.skill-item:hover::before,
.skill-item:hover::after {
  opacity: 1;
}

.skill-header {
  display: flex;
  align-items: center;
  margin-bottom: 0;
}

.skill-name {
  font-size: .78rem;
  font-weight: 500;
  color: var(--color-text);
  letter-spacing: .04em;
  display: flex;
  align-items: center;
}

.skill-name .lang {
  display: inline-block;
  width: 6px; height: 6px;
  background: var(--color-secondary);
  border-radius: 0;
  margin-right: .5rem;
  flex-shrink: 0;
  font-size: 0;
  color: transparent;
}

.skill-level-indicator {
  display: flex;
  gap: 4px;
  padding-left: .9rem;
}

.skill-cube {
  width: 10px;
  height: 10px;
  background: var(--color-border);
  border: 1px solid var(--color-secondary-glow);
  border-radius: 2px;
  box-sizing: border-box;
  transition: background-color .5s ease, border-color .5s ease, box-shadow .5s ease;
}

.skill-cube.active {
  background: var(--color-skills-cube-active);
  border-color: var(--color-skills-cube-active);
  box-shadow: 0 0 4px var(--color-skills-cube-active), 0 0 8px var(--color-accent-glow);
}

@media (max-width: 900px) {
  .skills-grid {
    column-count: 1;
    column-gap: 0;
  }
}

@media (max-width: 600px) {
  .skills-block-content {
    grid-template-columns: 1fr 1fr !important;
  }
}

@media (max-width: 400px) {
  .skills-block-content {
    grid-template-columns: 1fr !important;
  }
}