/* Skip-to-content link: visible only on focus */
.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: #0f172a;
  color: #ffffff;
  padding: 0.75rem 1rem;
  border-radius: 0.5rem;
  z-index: 100;
  text-decoration: none;
  font-weight: 600;
  transition: top 0.15s ease-in-out;
}

.skip-link:focus {
  top: 1rem;
  outline: 3px solid #ffffff;
  outline-offset: 2px;
}

/* Make <summary> marker more polished without losing semantics */
summary {
  cursor: pointer;
  list-style: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::before {
  content: "+";
  display: inline-block;
  width: 1.25rem;
  font-weight: 700;
  color: #0f172a;
}

details[open] summary::before {
  content: "−";
}

/* Ensure focus rings stay visible on all interactive elements */
a:focus-visible,
button:focus-visible,
summary:focus-visible {
  outline: 3px solid #1d4ed8;
  outline-offset: 2px;
  border-radius: 0.25rem;
}

/* Respect prefers-reduced-motion */
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}