/* ========================================
   TABS - Horizontal Tab System
   ======================================== */

.tab-bar {
  display: flex;
  align-items: center;
  gap: 0.125rem;
  padding: 0.375rem var(--spacing-sm);
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  /* Shadow subtile pour renforcer le sticky */
  box-shadow: 0 1px 0 var(--color-border), 0 2px 8px rgba(0, 0, 0, 0.04);
}

/* Hide scrollbar completely */
.tab-bar::-webkit-scrollbar {
  display: none;
}

.tab {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.4375rem 0.875rem;
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  background: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: color 0.15s ease, background-color 0.15s ease;
  white-space: nowrap;
  /* Surface tactile minimum 44px de hauteur (WCAG 2.5.5) */
  min-height: 2.75rem;
  line-height: 1;
}

.tab:hover {
  color: var(--color-text);
  background-color: var(--color-bg-secondary);
}

.tab--active {
  color: var(--color-primary);
  background-color: rgba(59, 130, 246, 0.1);
  font-weight: 600;
}

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

.tab:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 1px;
  border-radius: var(--radius-md);
}

/* Content area */
.main-content {
  padding: var(--spacing-lg) var(--spacing-md);
}

.content--loading {
  opacity: 0.5;
  pointer-events: none;
}

/* Placeholder for content not yet created */
.content-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 40vh;
  text-align: center;
  color: var(--color-text-secondary);
}

.placeholder-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-sm);
}

.placeholder-text {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

.placeholder-path {
  font-size: var(--font-size-sm);
  font-family: monospace;
  opacity: 0.6;
}

/* Responsive: compact tabs on mobile */
@media (max-width: 768px) {
  .tab-bar {
    gap: 0;
    padding: 0.25rem var(--spacing-xs);
  }

  .tab {
    padding: 0.4375rem 0.75rem;
    font-size: 0.8125rem;
    /* Conserver la surface tactile suffisante sur mobile */
    min-height: 2.75rem;
  }
}

@media (max-width: 480px) {
  .tab-bar {
    padding: 0.25rem 0.25rem;
  }

  .tab {
    padding: 0.4375rem 0.625rem;
    font-size: 0.8rem;
  }
}

/* Content area responsive */
@media (max-width: 768px) {
  .main-content {
    padding: var(--spacing-md) var(--spacing-sm);
  }
}