/* ==========================================================================
   Previous / Next Assignment Block
   Scoped to .pna-wrapper to avoid conflicts with Drupal theme CSS
   ========================================================================== */

.pna-wrapper {
  display: flex;
  align-items: stretch;
  gap: 0;
  margin: 24px 0;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  overflow: hidden;
  font-family: inherit;
  background: #fff;
}

/* Each side takes 50% */
.pna-prev,
.pna-next {
  flex: 1;
  min-width: 0;
}

/* Divider between prev and next */
.pna-divider {
  width: 1px;
  background: #e0e0e0;
  flex-shrink: 0;
}

/* Base link style */
.pna-link {
  display: flex;
  flex-direction: column;
  padding: 16px 20px;
  text-decoration: none;
  color: inherit;
  height: 100%;
  box-sizing: border-box;
  transition: background 0.15s ease;
}

.pna-link--prev {
  align-items: flex-start;
  border-right: none;
}

.pna-link--next {
  align-items: flex-end;
  text-align: right;
}

/* Hover state for active links */
a.pna-link:hover {
  background: #f5f8ff;
  text-decoration: none;
}

a.pna-link--prev:hover {
  background: #f0f7ff;
}

a.pna-link--next:hover {
  background: #f0f7ff;
}

/* Disabled (no prev or next available) */
.pna-link--disabled {
  opacity: 0.4;
  cursor: default;
  background: #fafafa;
}

/* Arrow */
.pna-arrow {
  font-size: 20px;
  color: #1a73e8;
  line-height: 1;
  margin-bottom: 4px;
}

.pna-link--disabled .pna-arrow {
  color: #999;
}

/* "Previous Assignment" / "Next Assignment" label */
.pna-meta {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: #1a73e8;
  margin-bottom: 4px;
}

.pna-link--disabled .pna-meta {
  color: #999;
}

/* The actual node title */
.pna-title {
  font-size: 14px;
  font-weight: 500;
  color: #222;
  line-height: 1.4;
  /* Clamp to 2 lines max so long titles don't break layout */
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.pna-link--disabled .pna-title {
  color: #999;
  font-style: italic;
}

/* Mobile: stack vertically */
@media (max-width: 600px) {
  .pna-wrapper {
    flex-direction: column;
  }

  .pna-divider {
    width: 100%;
    height: 1px;
  }

  .pna-link--next {
    align-items: flex-start;
    text-align: left;
  }
}