html,
body {
  margin: 0;
  padding: 0;
  overflow: hidden;
}

body {
  font-family: 'Radio Canada Big', sans-serif;
  font-optical-sizing: auto;
  font-style: normal;
  /* Matches water colour on map */
  background: hsl(210, 67%, 85%);
}

div#map {
  width: 100vw;
  height: calc(100vh - env(safe-area-inset-bottom) - env(safe-area-inset-top));

  margin-top: env(safe-area-inset-top);
  margin-bottom: env(safe-area-inset-bottom);

  opacity: 0;
  transition: opacity 0.5s;

  &.loaded {
    opacity: 1;
  }
}

#overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 16px;
  backdrop-filter: blur(10px);
  transition: opacity 1s;

  .loading {
    transform-origin: center;
    position: relative;
    width: 64px;
    height: 64px;
    border: 6px solid #2174e2;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 1s linear infinite;
  }

  &.hidden {
    opacity: 0;
  }
}

@keyframes spin {
  0% {
    transform: rotate(0);
  }
  100% {
    transform: rotate(1turn);
  }
}

/* Filters */

#filter-group {
  --padding: 8px;
  --heading-size: 1.1em;

  opacity: 0;

  position: fixed;
  top: 0;
  right: 0;
  padding: 8px;
  background: hsla(0, 0%, 100%, 0.5);
  backdrop-filter: blur(10px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;

  clip-path: polygon(0 0, 100% 0, 100% calc(2 * var(--padding) + var(--heading-size)), 0 calc(2 * var(--padding) + var(--heading-size)));
  transition:
    clip-path 0.4s,
    opacity 0.4s;

  &:hover,
  &:focus-within {
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
  }

  h2 {
    margin: 0;
    margin-bottom: 4px;
    font-size: var(--heading-size);
    line-height: var(--heading-size);
  }

  label {
    user-select: none;
  }

  &:not(:has(+ #overlay:not(.hidden))) {
    opacity: 1;
  }

  button {
    appearance: none;
    border-radius: 0;
    text-align: inherit;
    background: none;
    box-shadow: none;
    padding: 0;
    cursor: pointer;
    border: none;
    color: inherit;
    font: inherit;
  }

  .filter-group-row {
    display: flex;
    gap: 4px;
    align-items: center;

    .only {
      opacity: 0;
      transition: opacity 0.1s;
      color: #1759b0;
      text-decoration: underline;
      cursor: pointer;
    }

    &:hover .only {
      opacity: 1;
    }
  }
}