/* links.css — Links セクション専用 (#6)
   発光する技術カード。アイコンはホバーでアクセント反転。 */

#links .links__lead {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  letter-spacing: 0.02em;
  margin-top: calc(var(--space-6) * -1 + var(--space-1));
  margin-bottom: var(--space-5);
}

#links .links__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: var(--space-4);
}

#links .link-card {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  color: var(--text);
  text-decoration: none;
  overflow: hidden;
  transition: border-color 0.2s ease, transform 0.2s ease,
    box-shadow 0.2s ease, background-color 0.2s ease;
}
/* ホバー時にカード上部から滲むグロー */
#links .link-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    120% 80% at 50% -20%,
    var(--accent-weak),
    transparent 70%
  );
  opacity: 0;
  transition: opacity 0.25s ease;
  pointer-events: none;
}

#links .link-card:hover,
#links .link-card:focus-visible {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
  transform: translateY(-3px);
  box-shadow: var(--shadow-glow);
  text-decoration: none;
  color: var(--text);
}
#links .link-card:hover::before,
#links .link-card:focus-visible::before {
  opacity: 1;
}

#links .link-card__icon {
  position: relative;
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: var(--radius);
  background: var(--accent-weak);
  color: var(--accent);
  border: 1px solid color-mix(in srgb, var(--accent) 22%, transparent);
  transition: background-color 0.2s ease, color 0.2s ease,
    box-shadow 0.2s ease;
}

#links .link-card:hover .link-card__icon,
#links .link-card:focus-visible .link-card__icon {
  background: var(--accent);
  color: var(--on-accent);
  box-shadow: 0 0 18px var(--glow);
}

#links .link-card__icon svg {
  width: 22px;
  height: 22px;
}

#links .link-card__body {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

#links .link-card__name {
  font-size: var(--fs-base);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

#links .link-card__desc {
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  color: var(--text-muted);
  line-height: 1.45;
  margin-top: 2px;
}

/* 右上に外部リンクの矢印（装飾） */
#links .link-card::after {
  content: "↗";
  position: absolute;
  top: var(--space-3);
  right: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--fs-sm);
  color: var(--text-muted);
  opacity: 0;
  transform: translate(-4px, 4px);
  transition: opacity 0.2s ease, transform 0.2s ease, color 0.2s ease;
}
#links .link-card:hover::after,
#links .link-card:focus-visible::after {
  opacity: 1;
  transform: none;
  color: var(--accent);
}

@media (prefers-reduced-motion: reduce) {
  #links .link-card,
  #links .link-card::before,
  #links .link-card::after,
  #links .link-card__icon {
    transition: none;
  }
  #links .link-card:hover {
    transform: none;
  }
  #links .link-card:hover::after,
  #links .link-card:focus-visible::after {
    transform: none;
  }
}