/* Paper title links */
.post-content a.paper-link {
  display: inline;
  padding: 0;
  font-size: inherit;
  font-style: italic;
  color: #278044;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  cursor: pointer;
  vertical-align: baseline;
  transition: background-color 0.2s, border-color 0.2s;
}

@media (prefers-color-scheme: dark) {
  .post-content a.paper-link {
    color: #8fca9c;
  }
}

/* External-link indicator */
.paper-link-icon {
  display: inline-block;
  font-size: 0.8em;
  margin-left: 0.15em;
  vertical-align: 0.1em;
  opacity: 0.85;
  transition: opacity 0.2s;
}

/* Hover effect */
.post-content a.paper-link:hover {
  color: #278044;
  background: rgba(39, 128, 68, 0.12);
  border-radius: 0;
  border-bottom-color: currentColor;
  border-bottom-width: 2px;
}

@media (prefers-color-scheme: dark) {
  .post-content a.paper-link:hover {
    color: #8fca9c;
    background: rgba(143, 202, 156, 0.12);
  }
}

.post-content a.paper-link:hover .paper-link-icon {
  opacity: 1;
}

/* Keyboard accessibility */
.post-content a.paper-link:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
}