header {
  backdrop-filter: blur(20px);
  background: linear-gradient(to right, black, rgba(0, 0, 0, 0.75));
  padding: 5px 0 0 0;
  width: calc(100% - 1px);
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  box-sizing: border-box;
  z-index: 20;
}

nav#Title-bar {
  background: linear-gradient(
    to right,
    transparent,
    var(--color-purple) 1.5%,
    var(--color-purple),
    transparent
  );
  border-radius: 0px 200px 200px 0px;
  overflow-x: hidden;
  user-select: none;
}

nav#Title-bar {
  &:hover,
  &:focus-visible {
    background: linear-gradient(
      to right,
      transparent,
      var(--color-purple-hover) 1.5%,
      var(--color-purple-hover),
      transparent
    );

    a {
      color: hsl(0, 0%, 100%);
    }

    &::before {
      content: "";
      position: absolute;
      left: 0px;
      top: 70px;
      width: 95vw;
      height: 30px;
      background: linear-gradient(
        to right,
        black,
        hsl(var(--color-gray-900-a), 0.9),
        hsl(var(--color-gray-800-a), 0.5) 1.4%,
        transparent 2%
      );
      pointer-events: none;
      z-index: 7;
    }

    &::after {
      content: "";
      position: absolute;
      left: 0px;
      bottom: 53px;
      width: 95vw;
      height: 20px;
      background: radial-gradient(
        ellipse 100% 80% at 25% 0,
        hsla(var(--color-purple-hover-a), 0.7) 0%,
        transparent 80%
      );
      pointer-events: none;
      z-index: 5;
    }
  }
}

nav#Title-bar img {
  height: 1.5rem;
  margin: 0.5rem 0.8rem 0.5rem 1.3rem;
  border-radius: 10px;
}

nav#Title-bar a {
  line-height: 1;
  color: hsl(0, 0%, 90%);
  display: flex;
  align-items: baseline;
  text-decoration: none;
  font-size: 2rem;
  letter-spacing: 0.05em;
}

/* ------------------------------------- */

nav#Breadcrumbs {
  user-select: none;
  background: linear-gradient(
    to right,
    transparent,
    var(--color-gray-800) 1.5%,
    var(--color-gray-850) 70%,
    transparent
  );
  margin-top: 5px;
  padding: 5px 4px 2px 1.35rem;
  line-height: 1.2;
  color: hsl(0, 0%, 50%);
  font-size: 0.8rem;
}

nav#Breadcrumbs a {
  color: hsl(0, 0%, 50%);
  text-decoration: none;
  font-size: 0.8rem;
  border-radius: 5px;

  &:last-of-type {
    color: hsl(0, 0%, 80%);
  }
  &:hover,
  &:focus-visible {
    color: hsl(0, 0%, 100%);
    text-decoration: underline;
  }
}

/* ------------------------------------------ */

nav#Dropdown-menu {
  background: linear-gradient(
    to right,
    var(--color-gray-750),
    var(--color-gray-800)
  );
  margin: 5px 10px 0 10px;
  border-radius: 25px;
  box-shadow: 0px 5px 10px black;
}

nav#Dropdown-menu {
  a {
    transform: translateY(2px);
    color: hsl(0, 0%, 90%);
    text-decoration: none;
    display: block;
    height: 100%;
    padding-left: 2.65rem;
  }

  ul {
    list-style: none;
    display: flex;
    justify-content: space-between;
    padding: 0;
    margin: 0;
  }
}

nav#Dropdown-menu li.dropdown-category {
  border-radius: 25px;
  flex: 1;
  text-align: left;
  font-size: 1rem;
  border-right: 5px solid transparent;
  border-left: 0.5px solid transparent;
  position: relative;
  user-select: none;

  &::after {
    content: "";
    position: absolute;
    top: 100%;
    left: 0;
    height: 5px;
    width: 100%;
    z-index: 1;
  }

  &::before {
    content: "▶";
    position: absolute;
    left: 1rem;
    right: auto;
    top: 55%;
    transform: translateY(-50%);
    font-size: 0.7rem;
    transition: transform 0.3s ease;
  }

  &:hover,
  &:focus-within {
    cursor: pointer;
    border-radius: 25px;
    border-right: 5px white solid;
    border-left: var(--glass-border);
    background: linear-gradient(
      to right,
      var(--color-purple-hover),
      rgba(0, 0, 0)
    );

    > ul {
      display: block;
    }

    &:before {
      transform: translateY(-50%) rotate(90deg);
    }
  }
}

nav#Dropdown-menu li.dropdown-category ul {
  display: none;
  margin-top: 5px;
  position: absolute;
  width: 95%;
  top: 100%;
  left: 0;
  padding: 10px;
  border-radius: 10px;
  background: radial-gradient(
    ellipse 250% 100% at top left,
    hsl(var(--color-purple-a), 0.7),
    hsla(var(--color-gray-900-a), 0.4),
    hsla(var(--color-gray-900-a), 0.4),
    hsla(var(--color-gray-900-a), 0.5)
  );
  box-shadow: 20px 30px 25px rgba(10, 10, 10, 0.4);
  border: var(--glass-border);
  backdrop-filter: blur(5px);
}

nav#Dropdown-menu li.dropdown-category ul {
  li {
    border-radius: 5px;

    &:hover {
      background: linear-gradient(
        to right,
        var(--color-purple-hover),
        rgba(0, 0, 0, 0)
      );
    }
    & a {
      color: var(--color-white);
    }

    a:focus-visible {
      background: linear-gradient(
        to right,
        var(--color-purple-hover),
        rgba(0, 0, 0, 0)
      );
    }
  }

  a {
    padding-left: 0.5rem;
  }
}