/* Main App Layout */
.main-app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.header {
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border);
  background: var(--bg-primary);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left h1 {
  font-size: 20px;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.header-left h1 i {
  color: var(--primary);
  font-size: 24px;
}

.version-badge {
  font-size: 11px;
  padding: 2px 6px;
  background: var(--bg-tertiary);
  border-radius: 4px;
  color: var(--text-tertiary);
  font-weight: 600;
  margin-left: 8px;
}

.header-right {
  display: flex;
  gap: 12px;
  align-items: center;
}

.header-right .btn-icon:last-child {
  margin-left: 8px;
}



.sync-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  width: 12px;
  height: 12px;
  background: var(--warning);
  border: 2px solid var(--bg-primary);
  border-radius: 50%;
  border-radius: 50%;
  display: none;
}

.sync-badge.active {
  display: block;
}

/* Categories Filter */
.categories {
  padding: 16px 24px;
  display: flex;
  gap: 12px;
  overflow-x: auto;
  border-bottom: 1px solid var(--border);
  background: var(--bg-primary);
  scrollbar-width: none; /* Firefox */
}

.categories::-webkit-scrollbar {
  display: none; /* Safari and Chrome */
}

.category {
  padding: 8px 16px;
  border-radius: var(--radius-full);
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: var(--transition);
}

@media (hover: hover) and (pointer: fine) {
  .category:hover {
    border-color: var(--primary);
    color: var(--text-primary);
  }
}

.category.active {
  background: var(--primary);
  color: var(--on-primary);
  border-color: var(--primary);
}

.category .badge {
  background: var(--bg-primary);
  color: var(--text-primary);
  padding: 2px 6px;
  border-radius: 10px;
  font-size: 12px;
  font-weight: 600;
}

.category.active .badge {
  background: rgba(255, 255, 255, 0.2);
  color: white;
}

.content {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
}

@media (max-width: 768px) {
  .content {
    padding: 0;
  }
}