/*
 * Tab navigation — pill/segmented control style.
 * Works with <button> elements (Stimulus client-side) and <a> elements (server-side link_to).
 *
 * Usage:
 *   <div class="tab-nav" role="tablist">
 *     <a class="tab-btn tab-btn--active" href="?filter=live">Live</a>
 *     <a class="tab-btn" href="?filter=settling">Settling</a>
 *   </div>
 *
 * Or with Stimulus:
 *   <div class="tab-nav" data-controller="games-tabs" role="tablist">
 *     <button class="tab-btn tab-btn--active" data-tab="all" data-action="...">All</button>
 *   </div>
 */

.tab-nav {
  background: var(--bg-secondary);
  border: 1px solid var(--border-primary);
  border-radius: var(--radius-xl);
  container-type: inline-size;
  display: flex;
  flex-wrap: nowrap;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  -webkit-overflow-scrolling: touch;
  overflow-x: auto;
  padding: var(--space-2);
  scrollbar-width: none;
}

.tab-nav::-webkit-scrollbar {
  display: none;
}

.tab-btn {
  background: transparent;
  border: none;
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  cursor: pointer;
  flex: 1 1 0;
  font-size: var(--font-base);
  font-weight: 500;
  min-width: 0;
  padding: var(--space-2) var(--space-4);
  text-align: center;
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast);
  white-space: nowrap;
}

.tab-btn:hover {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  text-decoration: none;
}

.tab-btn--active {
  background: var(--accent-primary);
  color: #fff;
  font-weight: 600;
}

.tab-btn--active:hover {
  background: var(--accent-primary);
  color: #fff;
}

@media (max-width: 768px) {
  .tab-btn {
    font-size: var(--font-sm);
    padding: var(--space-2) var(--space-3);
  }

  /* Match games page: four-tab bars become 2×2 on phone/tablet portrait. */
  .tab-nav--quad:not(.tab-nav--scroll),
  .tab-nav:not(.tab-nav--scroll):has(> .tab-btn:nth-of-type(4):last-of-type) {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    overflow-x: visible;
  }
}

/* Scrollable tabs: keep pill width to content; swipe on narrow viewports. */
.tab-nav--scroll .tab-btn {
  flex: 0 0 auto;
}

/* Four tabs: 2×2 when the bar is too narrow for one row (avoids 3+1 orphans). */
@container (max-width: 36rem) {
  .tab-nav--quad:not(.tab-nav--scroll),
  .tab-nav:not(.tab-nav--scroll):has(> .tab-btn:nth-of-type(4):last-of-type) {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    overflow-x: visible;
  }

  .tab-nav--scroll.tab-nav--quad {
    display: flex;
    overflow-x: auto;
  }
}