*,
*::after,
*::before {
  box-sizing: border-box;
}

body {
  margin: 0;
  overflow-x: hidden;
}

/* VARIABLES */
:root {
  --bar-width: 50px;
  --bar-height: 4px;
  --hamburger-gap: 6px;
  --foreground: #161413;
  --background: white;
  --hamburger-margin: 20px;
  --animation-timing: 200ms ease-in-out;
  --hamburger-height: calc(var(--bar-height) * 3 + var(--hamburger-gap) * 2);
}

header {
  border-bottom: 3px solid #6b7fd7;
}

/* DESKTOP VIEW */
.header-desktop {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  margin: 1%;
}

nav > a,
#logo > a {
  text-decoration: none;
  color: var(--foreground);
  text-transform: uppercase;
}

#logo > a {
  font-weight: bold;
  font-size: 40px;
}

nav > a {
  font-size: 30px;
  color: var(--foreground);
  padding: 0 0.25rem;
  transition: color 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
}

nav > a:hover {
  box-shadow: inset 500px 0 0 0 #ecb7b6;
  color: white;
}

.header-mobile {
  display: none;
}

/* MOBILE / TABLET VIEW */

@media (max-width: 1170px) {
  .header-desktop {
    display: none;
  }

  .header-mobile {
    display: block;
    margin: 1% 2%;
  }

  nav {
    display: flex;
    flex-direction: column;
    text-align: right;
  }

  nav > a {
    color: var(--background);
  }

  .hamburger-menu {
    --x-width: calc(var(--hamburger-height) * 1.41421356237);
    display: flex;
    flex-direction: column;
    gap: var(--hamburger-gap);
    width: max-content;
    position: absolute;
    top: var(--hamburger-margin);
    right: var(--hamburger-margin);
    z-index: 4;
    cursor: pointer;
  }

  .hamburger-menu:has(input:checked) {
    --foreground: white;
    --background: #333;
  }

  .hamburger-menu:has(input:focus-visible)::before,
  .hamburger-menu:has(input:focus-visible)::after,
  .hamburger-menu input:focus-visible {
    border: 1px solid var(--background);
    box-shadow: 0 0 0 1px var(--foreground);
  }

  .hamburger-menu::before,
  .hamburger-menu::after,
  .hamburger-menu input {
    content: "";
    width: var(--bar-width);
    height: var(--bar-height);
    background-color: var(--foreground);
    border-radius: 9999px;
    transform-origin: right center;
    transition: opacity var(--animation-timing), width var(--animation-timing),
      rotate var(--animation-timing), translate var(--animation-timing),
      background-color var(--animation-timing);
  }

  .hamburger-menu input {
    appearance: none;
    padding: 0;
    margin: 0;
    outline: none;
    pointer-events: none;
  }

  .hamburger-menu:has(input:checked)::before {
    rotate: -45deg;
    width: var(--x-width);
    translate: 0 calc(var(--bar-height) / -2);
  }

  .hamburger-menu:has(input:checked)::after {
    rotate: 45deg;
    width: var(--x-width);
    translate: 0 calc(var(--bar-height) / 2);
  }

  .hamburger-menu input:checked {
    opacity: 0;
    width: 0;
  }

  .sidebar {
    position: fixed;
    top: 0;
    right: -100vw;
    width: 100vw;
    height: 100vh;
    padding: 0.5rem 1rem;
    padding-top: calc(var(--hamburger-height) + var(--hamburger-margin) + 1rem);
    background-color: var(--blue);
    color: var(--foreground);
    z-index: 3;
    transition: right 0.5s ease;
  }

  .hamburger-menu:has(input:checked) + .sidebar {
    right: 0;
  }

  /* disable scrolling when sidebar is open */
  html:has(.hamburger-menu input:checked) {
    overflow: hidden;
  }
}

@media (max-width: 480px) {
  #logo > a {
    font-size: 30px;
  }

  .hamburger-menu {
    top: 12px;
  }
}

@media (max-width: 350px) {
  .hamburger-menu {
    top: 13px;
    right: 10px;
  }
}