/* ----- Buttons ----- */
.btn {
  --padding-inline: var(--layout-space-sm);
  --padding-block: var(--layout-space-xs);

  --text-color: #fff;
  --bg-color: var(--color-500);
  --border-color: var(--color-500);
  --border-size: 0px;

  --text-color-hover: #fff;
  --bg-color-hover: var(--color-700);
  --border-color-hover: var(--color-700);

  display: inline-flex;
  gap: .25em;
  justify-content: center;
  align-items: center;
  padding: var(--padding-block) var(--padding-inline);
  border: var(--border-size) solid var(--border-color);
  background-color: var(--bg-color);
  transition: all .25s;

  color: var(--text-color);
  font-size: 1rem;
  line-height: 1.5;
  text-decoration: none;
  text-align: center;
  cursor: pointer;

  position: relative;
  overflow: hidden;

  > :is(span, .icon) {
    position: relative;
    z-index: 1;
  }

  > span {
    position: relative;
    z-index: 1;

    display: inline-flex;
    gap: .25em;
    justify-content: center;
    align-items: center;  
  }

  &::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    background-color: var(--bg-color-hover);
    scale: 0 1;
    transform-origin: 100% 50%;
    transition-property: scale;
    transition-duration: inherit;
    transition-timing-function: var(--ease-out-cubic);
  }

  &:is(:hover, :focus, .is-active), a:hover & {
    color: var(--text-color-hover);
    border-color: var(--border-color-hover);

    &::after {
      scale: 1;
      transform-origin: 0 50%;
    }
  }  

  &:is(.disabled, :disabled) {
    pointer-events: none;
    opacity: .75;
  }
  
  & .icon, & svg {
    pointer-events: none;
  }

  &.btn--outline {
    --text-color: var(--color-500);
  }
}


.btn--white {
  --text-color: var(--color-500);
  --bg-color: var(--color-50);
  --border-color: #fff;

  --text-color-hover: var(--color-700);
  --bg-color-hover: #fff;
  --border-color-hover: #fff;

  &.btn--outline {
    --text-color: #fff;
  }
}

.btn--green {
  --bg-color: var(--color-accent-500);
  --border-color: var(--color-accent-500);

  --bg-color-hover: var(--color-accent-700);
  --border-color-hover: var(--color-accent-700);

  &.btn--outline {
    --text-color: var(--color-accent-700);
  }
}


.btn--outline, .btn--ghost {
  --bg-color: transparent;
  --border-size: 1px;
}

.btn--ghost {
  --text-color: #fff;
  --text-color-hover: var(--color-700);
  --bg-color-hover: #fff;
  --border-color-hover: #fff;
}


.btn--icon, .btn--round {
  --padding-inline: 1rem;
  --padding-block: 1rem;
}

.btn--round {
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  aspect-ratio: 1 / 1;
}

.btn--icon-multi {
  &:not(.is-active) .icon:last-of-type, &.is-active .icon:first-of-type {
    display: none;
  }
}


.icon {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 1em;
  height: 1em;
  fill: currentColor;
  stroke: currentColor;
  transition: inherit;

  & use {
    transition: inherit;
  }
}

a, button {
  & .icon {
    pointer-events: none;
  }
}



/* ----- Header and footer ----- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  color: #fff;
  background-color: var(--color-500);
  border-bottom: 1px solid #fff;

  @media (--viewport-md-up) {
    min-height: 80px;
  }

  .container {
    display: flex;
    gap: var(--layout-space-sm);
    flex-wrap: wrap;
    align-items: center;
  }

  a:not(.btn) {
    color: #fff;
    text-decoration: none;

    &:is(:hover, :focus) {
      color: var(--color-100);
    }
  }
}

  .logo-text {
    flex: 1 0 0%;
    margin: 0;
    font-family: var(--heading-font-family);
    color: #fff;

    /* font-size: 2.5rem; 
    font-size: clamp(2rem, 1.5229rem + 2.0356vw, 2.5rem); */

    font-size: 2rem;
    font-size: clamp(1.5rem, 1.0229rem + 2.0356vw, 2rem);
  }


  .header-nav {
    margin-inline-start: auto;

    &:not(:has(.btn)) {
      row-gap: 0;
    }

    @media (--viewport-sm-down) {
      width: 100%;
    }

    a:not(.btn) {
      position: relative;
      color: var(--color-100);
      text-transform: uppercase;

      &::after {
        content: "";
        position: absolute;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 2px;
        transition: transform .2s ease-in-out;
  
        z-index: -1;
        background-color: currentColor;
        transform: scaleX(0);
        transform-origin: 100% 50%;
        transition-timing-function: var(--ease-in-out-cubic);
      }

      &:is(:hover, :focus, .is-active) {
        color: #fff;

        &::after {
          transform: scaleX(1);
          transform-origin: 0 50%;
        }
      }
  
    }

    .btn {
      @media (--viewport-sm-down) { 
        width: calc(50% - (var(--layout-space) / 2));
        --padding-block: var(--layout-space-xxs);
      }
    }
  }


  .footer {
    text-align: center;

    .container > * {
      &:not(:first-child) {
        margin-block-start: var(--layout-space);
      }
      padding-block-start: var(--layout-space);
      border-block-start: 2px solid var(--color-500);
    }

    .group, .nav {
      align-items: center;
      justify-content: center;
    }
  
    .share-title {
      @media (--viewport-sm-down) {
        width: 100%;
      }
    }
  }
    
    .footer-nav {
      row-gap: var(--layout-space-xs);
      font-size: .875rem;
    }


/* Page heading */
.page-intro {
  display: flex;
  gap: var(--layout-space-md);
  align-items: center;
}

  .page-heading {
    flex-grow: 1;
    text-wrap: pretty;
  }

  .page-intro-img {
    width: 80px;
    height: auto;
    border-radius: 50%;
  }

  .columns-sm-2 {
    @media (--viewport-sm-up) {
      column-count: 2;
      column-gap: var(--layout-space-md);
    }

    > * {
      break-inside: avoid;
      text-wrap: pretty;
    }
  }