:root {
  --top-info-bar-height: 70px;
  --main-nav-height: 64px;
}

.top-info-bar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--top-info-bar-height);
  z-index: 1050;
  display: flex;
  align-items: center;
  transition: transform 0.35s ease;
}

.top-info-bar.hidden {
  transform: translateY(-100%);
}

.main-nav {
  top: var(--top-info-bar-height);
  z-index: 1040;
  padding: 0.9rem 0;
  transition: top 0.35s ease, padding 0.35s ease;
}

.main-nav.compact {
  top: 0;
  padding: 0.45rem 0;
}

.main-nav .navbar-brand img {
  width: 150px;
  transition: width 0.35s ease;
}

.main-nav.compact .navbar-brand img {
  width: 105px;
}

body {
  padding-top: calc(var(--top-info-bar-height) + var(--main-nav-height));
}