/* Tab Bar Component Styles */

.tab-bar {
  background: var(--color-background);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--spacing-5);
  box-shadow: var(--shadow-xs);
}

.tab-bar-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  gap: 0;
  align-items: stretch;
}

.tab-bar-item {
  flex: 1;
  padding: var(--spacing-4) var(--spacing-5);
  text-align: center;
  text-decoration: none;
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
  font-size: var(--font-size-base);
  border-bottom: 3px solid transparent;
  transition: var(--transition-colors);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
}

.tab-bar-item:hover {
  color: var(--color-text-primary);
  background: var(--color-background-secondary);
}

.tab-bar-item:focus {
  outline: 2px solid var(--color-primary-500);
  outline-offset: -2px;
  border-radius: var(--radius-sm);
}

.tab-bar-item.active {
  color: var(--color-primary-600);
  border-bottom-color: var(--color-primary-600);
  background: var(--color-primary-50);
}

.tab-bar-item.active:hover {
  background: var(--color-primary-100);
}

/* Icon support */
.tab-bar-item-icon {
  width: 20px;
  height: 20px;
  margin-right: var(--spacing-2);
  display: inline-block;
  vertical-align: middle;
}

.tab-bar-item-text {
  display: inline-block;
  vertical-align: middle;
}

/* Badge support for notifications */
.tab-bar-item-badge {
  position: absolute;
  top: var(--spacing-2);
  right: var(--spacing-2);
  background: var(--color-error);
  color: var(--color-text-inverse);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-bold);
  padding: var(--spacing-px) var(--spacing-1-5);
  border-radius: var(--radius-full);
  min-width: 18px;
  height: 18px;
  line-height: 16px;
  text-align: center;
}

/* Mobile responsive */
@media (max-width: 768px) {
  .tab-bar-container {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .tab-bar-container::-webkit-scrollbar {
    display: none;
  }

  .tab-bar-item {
    flex: 0 0 auto;
    white-space: nowrap;
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--font-size-sm);
  }

  .tab-bar-item-icon {
    width: 18px;
    height: 18px;
  }

  /* Hide text on very small screens, show only icons if present */
  @media (max-width: 480px) {
    .tab-bar-item-text {
      display: none;
    }

    .tab-bar-item-icon {
      margin-right: 0;
    }
  }
}

/* Dark mode support */
[data-theme="dark"] .tab-bar,
.dark .tab-bar {
  background: var(--color-neutral-900);
  border-bottom-color: var(--color-neutral-800);
}

[data-theme="dark"] .tab-bar-item,
.dark .tab-bar-item {
  color: var(--color-neutral-400);
}

[data-theme="dark"] .tab-bar-item:hover,
.dark .tab-bar-item:hover {
  color: var(--color-neutral-100);
  background: var(--color-neutral-800);
}

[data-theme="dark"] .tab-bar-item.active,
.dark .tab-bar-item.active {
  color: var(--color-primary-400);
  border-bottom-color: var(--color-primary-400);
  background: rgba(59, 130, 246, 0.1);
}

[data-theme="dark"] .tab-bar-item.active:hover,
.dark .tab-bar-item.active:hover {
  background: rgba(59, 130, 246, 0.15);
}

/* Accessibility improvements */
.tab-bar[role="navigation"] {
  /* Ensure proper semantics */
}

.tab-bar-list[role="tablist"] {
  display: flex;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
}

/* Screen reader only text */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}