header {
  display: flex;
  justify-content: center;
  align-items: center;
  position: fixed;
  top: 0;
  width: 100%;
  background-color: transparent;
  border-bottom: 1px solid transparent;
  padding: var(--spacing-xs) 0;
  z-index: 100;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

/* 1. Header & Navigation */
header.scrolled {
  background-color: var(--bg-bright-1);
  border-color: var(--c-border-light);
}

header .header-container {
  display: grid;
  grid-template-columns: 350px 1fr 350px;
  gap: var(--spacing-m);
  justify-content: space-between;
  align-items: center;
}

header .logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  font-weight: 700;
  color: var(--c-primary-1);
}

header .logo img {
  height: auto;
  width: 150px;
  transform: scale(1.2);
}

header .logo .beta-tag {
  margin-bottom: auto;
  margin-top: -0.5em;
  transform: scale(0.85);
}

header nav ul:not(.submenu) {
  display: flex;
  list-style: none;
  gap: var(--spacing-m);
  justify-content: center;
}

header nav ul li a {
    color: var(--c-text-dark);
}

header .header-buttons {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  align-items: center;
}

/* Mobile menu */
header .mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
}

@media screen and (max-width: 999px) {
  header .container {
    grid-template-columns: 1fr 25px;
  }

  header .logo,
  header .mobile-menu-toggle {
    z-index: 99;
  }

  header .mobile-menu-toggle {
    display: block;
  }

  header .logo img {
    transform: scale(1);
  }
  
  header nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: var(--bg-bright-1);
    height: 100vh;
    overflow-y: auto;
    padding: var(--spacing-3xl) 0 var(--spacing-m) 0;
    opacity: 0;
    visibility: hidden;
    z-index: 98;
    display: flex;
    flex-direction: column;

    font-size: var(--fs-l);
  }
  
  body.menu-open header nav {
    opacity: 1;
    visibility: visible;
  }
  
  header nav ul {
    display: flex;
    flex-direction: column;
    padding: 0 var(--spacing-m);
    gap: var(--spacing-s) !important;
  }

  header nav .has-submenu ul {
    list-style: none;
    padding-top: var(--spacing-m);
    padding-left: var(--spacing-m);
    font-size: var(--fs-s)
  }

  header nav .has-submenu ul li::before {
    content: "> ";
    transform: scaleX(0.7) scaleY(1.3);
    font-weight: 100;
    display: inline-block;
    margin-right: var(--spacing-xs);
  }

  header nav ul i,  
  header .header-buttons {
    display: none;
  }

  header .header-buttons-mobile {
    margin-top: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    padding: var(--spacing-m);
  }
}

@media screen and (min-width: 1000px) {
  header .container {
    grid-template-columns: 300px 1fr 300px;
  }

  header nav .has-submenu {
    position: relative;
  }

  header nav .submenu {
      position: absolute;
      left: calc(var(--spacing-xs) * -1);
      top: calc(100% + var(--spacing-s) + 5px);
      display: flex;
      flex-direction: column;
      list-style: none;
      padding: 0;
      background: white;
      border: 1px solid rgba(100, 100, 100, 0.15);
      border-radius: var(--border-radius-m);
      opacity: 0;
      visibility: hidden;
      transition: all 0.2s;
  }

  header nav .has-submenu.open .submenu {
      opacity: 1;
      visibility: visible;
  }

  header nav .submenu li a {
      padding: calc(var(--spacing-s) / 2) calc(var(--spacing-s) * 0.75);
      display: block;
  }

  header .header-buttons-mobile {
    display: none;
  }

}


@media screen and (min-width: 1200px) {
  header .container {
    grid-template-columns: 350px 1fr 350px;
  }
}