body {
  font-family: var(--font-family);
  background-color: var(--color-bg-main);
}

#page {
  height: 100dvh;
  display: grid;
  grid-template:
    "header" auto
    "main" minmax(0, 1fr)
    "nav" auto / 1fr;
  overflow: hidden;
}

h1 {
  font-size: 3rem;
  font-weight: 700;
}

.main {
  grid-area: main;
  min-height: 0;
  overflow-y: auto;
}

.main-header {
  grid-area: header;
  width: 100%;
  display: flex;
  align-items: center;
  z-index: 100;
  justify-content: space-between;
  padding: 1.2em 1em;
  background-color: var(--color-white);
  box-shadow: 0 4px 4px var(--color-black-10);
}

.main-header img {
  width: 2rem;
  height: auto;
}

.main-header-title {
  display: none;
}

.main-header-help {
  display: none;
}

.user-avatar {
  color: var(--color-medium);
  font-weight: 700;
  width: 2.5rem;
  height: 2.5rem;
  border: 2px solid var(--color-dark);
  border-radius: 30px;
  background-color: var(--color-white);
  transition: fill 0s ease 125ms;
  cursor: pointer;
}

.user-menu {
  position: relative;
}

.user-menu-dropdown {
  width: 9.3em;
  padding: 1em 1em 1em 1.2em;
  height: 11.3em;
  gap: 1.4em;
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 100%;
  right: -0.7em;
  border-radius: 20px 0 20px 20px;
  background-color: var(--color-dark);
}

.user-menu-item > a {
  color: inherit;
  text-decoration: none;
}

.user-menu-item {
  text-decoration: none;
  color: var(--color-gray-209);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.2;
  margin-inline: -0.5em;
  padding-inline: 0.5em;
  padding-block: 0.6em;
  margin-block: -0.6em;
}

.user-menu-logout {
  text-decoration: none;
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
}

.main-nav {
  position: fixed;
  bottom: 0;
  width: 100%;
  grid-area: nav;
  height: 5rem;
  background-color: var(--color-dark);
  z-index: 1000;
}

.main-nav-list {
  height: 100%;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  padding: 0;
}

.main-nav-item {
  display: flex;
  justify-content: center;
  align-items: center;
  transition:
    transform 150ms ease,
    background-color 150ms ease;
}

.nav-join-img {
  display: none;
}

.main-nav-item a {
  width: 5rem;
  height: 4.75rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 0.3rem;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.2;
  color: var(--color-white);
  text-decoration: none;
  transition: background-color 150ms ease;
}

.main-nav a[aria-current="page"] {
  background-color: var(--color-dark-active);
  border-radius: 1rem;
}

.main-nav-item span {
  color: var(--color-white);
}

.main-nav-legal {
  display: none;
}

@media (width >= 80em) {
  #page {
    height: 100dvh;
    overflow: hidden;
    grid-template-columns: 14.5rem repeat(4, 1fr);
    grid-template-areas:
      "nav  header header header header"
      "nav main main main main";
  }

  .main {
    grid-area: main;
    min-height: 0;
    overflow-y: auto;
  }

  .main-header {
    grid-area: header;
    position: static;
    padding: 1em;
    width: auto;
    display: flex;
    align-items: center;
    padding-inline: 4em;
  }

  .main-header-logo {
    display: none;
  }

  .main-header-title {
    display: block;
    margin-inline-end: auto;
  }

  .main-header-help {
    display: block;
    margin-inline-end: 1em;
  }

  .user-avatar {
    width: 4rem;
    height: 4rem;
    border-radius: 35px;
  }

  .user-avatar span {
    font-size: 1.3rem;
  }

  .user-menu-dropdown {
    height: 9.3em;
    top: 100%;
    margin-block-start: 1em;
  }

  .user-menu-item--help {
    display: none;
  }

  .main-nav {
    grid-area: nav;
    position: static;
    width: auto;
    height: 100dvh;
    display: flex;
    flex-direction: column;
  }

  .main-nav-list {
    width: 100%;
    height: auto;
    display: flex;
    gap: 1.2em;
    flex-direction: column;
  }

  .main-nav-item {
    width: 100%;
  }

  .main-nav-item a {
    font-size: 1rem;
    line-height: 1.2;
    width: 100%;
    height: auto;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
    padding: 0.8em 2em;
    box-sizing: border-box;
  }

  .main-nav-item span {
    width: 5rem;
  }

  .main-nav a[aria-current="page"] {
    border-radius: 0;
  }

  .main-nav-item img {
    width: 30px;
    height: 30px;
  }

  .nav-join-img {
    display: block;
    width: 115px;
    height: auto;
    margin-inline: auto;
    margin-block: 4em 7em;
  }

  .main-nav-legal {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    width: fit-content;
    align-self: center;
    margin-block: auto 4em;
    gap: 1em;
  }

  .main-nav-legal a {
    font-size: 1rem;
    text-decoration: none;
    color: var(--color-gray-231);
  }
}

@media (hover: hover) and (pointer: fine) {
  .user-avatar:hover,
  .user-avatar:active {
    background-color: var(--color-gray-231);
  }

  .main-header-help:hover {
    transform: scale(1.1);
  }

  .user-menu-item:hover {
    background-color: var(--color-medium);
  }

  .main-nav-item:not(:has(a[aria-current="page"])):hover {
    background-color: var(--color-medium);
    transform: translateY(-2px);
  }

  .main-nav-legal a:hover {
    color: var(--color-dark-active);
  }
}