* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
  touch-action: manipulation;
}

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
               Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  line-height: 1.5;
  overflow: hidden;
  background-color: var(--bg-color);
  color: var(--text-color);
}

#app-container {
  display: flex;
  height: 100vh;
  width: 100%;
  position: relative;
  overflow: hidden;
}

@keyframes fadeIn {
  to {
    opacity: 1;
  }
}

.hidden {
  display: none !important;
}

.visible {
  display: flex;
}

.tab-content.active {
  display: block;
}