/**
 * Atlas Vertical – Author rail component
 * Horizontal scroll of "more from this author" compact cards.
 *
 * Native overflow-x scroll with scroll-snap for mobile swipe.
 * JS adds arrow buttons on desktop when content overflows (see author-rail.js).
 */

.author-rail {
  padding-block: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

/* Header: title + arrow buttons */
.author-rail__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
  padding-inline: var(--space-md);
}

.author-rail__title {
  font-size: var(--font-size-lg);
  margin: 0;
}

/* Arrow buttons: hidden by default, shown by JS on non-touch devices */
.author-rail__arrows {
  display: flex;
  gap: var(--space-sm);
}

.author-rail__arrow {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  background: var(--color-bg);
  color: var(--color-text);
  cursor: pointer;
  transition: border-color 0.2s, opacity 0.2s;
}

.author-rail--has-overflow .author-rail__arrow {
  display: flex;
}

.author-rail__arrow:disabled {
  opacity: 0.3;
  cursor: default;
}

.author-rail__arrow:not(:disabled):hover {
  border-color: var(--color-text);
}

.author-rail__arrow:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.author-rail__arrow svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

/* Scrollable track */
.author-rail__track {
  display: flex;
  gap: var(--space-md);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  padding-inline: var(--space-md);
}

.author-rail__track::-webkit-scrollbar {
  display: none;
}

/* Card sizing within the rail */
.author-rail__track > .card {
  flex: 0 0 140px;
  scroll-snap-align: start;
}

@media (min-width: 640px) {
  .author-rail {
    padding-block: var(--space-2xl);
  }

  .author-rail__track > .card {
    flex: 0 0 160px;
  }
}

@media (min-width: 960px) {
  .author-rail__track > .card {
    flex: 0 0 180px;
  }
}