/*
  PERSONALIZZAZIONE
  custom properties (valori di default):

  Basic props:
  --up-bg-color: hsl(0deg 0% 0% / .7);
  --up-text-color: #fff;
  --up-line-height: 1.4;
  --up-font-family: sans-serif;
  --up-font-size: 1rem;
  --up-font-variation-settings: unset;
  --up-font-weight: 400;

  Credits box
  --up-credits-font-size: .8em;
  --up-credits-font-weight: 400;
  --up-credits-line-height: 1.3;

  H1
  --up-h1-color: var(--up-text-color);
  --up-h1-font-size: 2rem;
  --up-h1-font-variation-settings: unset;
  --up-h1-font-weight: 700;
  --up-h1-line-height: 1.25;

  icons:
  --up-icon-box-bg: var(--up-link-color);
  --up-icon-fill-color: #333;
  --up-icon-hover-box-bg: #fff;

  links:
  --up-link-color: #fc0;
  --up-link-decoration: none;
  --up-link-hover-color: #fc0;
  --up-link-hover-decoration: underline;

  loader:
  --up-loader-color: hsl(0deg 0% 100% / .6);

*/


/* stylelint-disable declaration-no-important */

.bodyNoScroll {
  padding: 0 !important;
  margin: 0 !important;
  overflow: hidden !important;


}
/* stylelint-enable declaration-no-important */

.upContainer {

  position: relative;
  width: 100dvw;
  height: 100dvh;


  font-family: var(--up-font-family, sans-serif);
  font-size: var(--up-font-size, 1rem);
  font-variation-settings: var(--up-font-variation-settings, unset);
  font-weight: var(--up-font-weight, 400);
  line-height: var(--up-line-height, 1.4);

  background-color: #333;

  a:is(:link, :visited) {
    color: var(--up-link-color, #fc0);
    text-decoration: var(--up-link-decoration, none);

    @media (hover: hover) {
      &:hover {
        color: var(--up-link-hover-color, #fc0);
        text-decoration: var(--up-link-hover-decoration, underline);
      }
    }
  }
}

.upCanvas {
  position: absolute;
  /* z-index: -1; */
  width: 100%;
  height: 100%;
}

.unsplashPhoto { /* img */
  position: relative;
  z-index: 0;
  display: block;
  width: 100dvw;
  height: 100dvh;
  object-fit: cover;
  object-position: center;

  /* font-size: 1.2rem; */
  /* color: #999; */
  /* text-align: center; */

}

.unsplashPhoto, .upCredits {
  opacity: 0;
  transition: opacity .3s linear;

  .show & {
    opacity: 1;
  }
}

.upMessageBox {
  position: absolute;
  bottom: 0;
  display: flex;
  flex-flow: column nowrap;
  gap: 3rem;
  align-items: center;
  justify-content: center;
  width: 100%;
  overflow: hidden;
}

.upMessage, .upCredits {
  color: var(--up-text-color, #fff);
  background-color: var(--up-bg-color, hsl(0deg 0% 0% / .7));
}

.upMessage {
  position: relative;
  width: max-content;
  max-width: 90dvw;
  padding: 1rem 2rem;
  text-align: center;
  transition: translate .3s ease-in-out;

  h1 {
    margin: 0;
    font-size: var(--up-h1-font-size, 2rem);
    font-variation-settings: var(--up-h1-font-variation-settings, unset);
    font-weight: var(--up-h1-font-weight, 700);
    line-height: var(--up-h1-line-height, 1.25);
    color: var(--up-h1-color, var(--up-text-color, #fff));
  }

  p {
    margin: .5rem 0 0;
  }

  @media screen and (min-width: 768px) {
    max-width: 60dvw;
  }

  .upBackLink {
    margin-top: 1rem;
  }

  .upArrowWrapper {
    --arrow-size: 2rem;
    --arrow-position: calc(var(--arrow-size) * .25 * -1);

    position: absolute;
    bottom: var(--arrow-position);
    left: var(--arrow-position);
    width: var(--arrow-size);
    height: var(--arrow-size);
    color: var(--up-icon-fill-color, #333);
    cursor: w-resize;
    background-color: var(--up-icon-box-bg, var(--up-link-color, #fc0));
    border-radius: 50%;
    /* transition: all .2s ease-in-out; */
    /* duration | easing-function | delay | iteration-count | direction | name */
    animation: .2s ease-in 2s 2 reverse icon-shaking;

    @media (hover: hover) {
      &:hover {
        background-color: var(--up-icon-hover-box-bg, #fff);
      }
    }

    img {
      display: block;
      width: 100%;
      height: 100%;
    }
  }

  &.hidden {
    translate: calc(-1 * (50dvw + 50% - 2rem));
    .upArrowWrapper {
      right: var(--arrow-position);
      left: auto;
      cursor: e-resize;
      rotate: .5turn;
    }
  }

}

@keyframes icon-shaking {
  0% { transform: translateX(0); }
  40% { transform: translateX(20px); }
  80% { transform: translateX(-5px); }
  100% { transform: translateX(0); }
}

.upCredits {
  display: flex;
  flex-flow: column wrap;
  gap: .5rem;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: .2rem 1rem;
  font-size: var(--up-credits-font-size, .8em);
  font-weight: var(--up-credits-font-weight, 400);
  line-height: var(--up-credits-line-height, 1.3);


  @media screen and (min-width: 768px) {
    flex-direction: row;
    justify-content: space-between;
  }
}


/* link a scomparsa alla pagina della foto */
.unsplashPhotoLink {
  position: absolute;
  top: 1rem;
  right: 1rem;

  a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2.5rem;
    aspect-ratio: 1;
    padding: 4px;
    color: #fff;
    background-color: rgb(0 0 0 / .5);
    border-radius: 50%;

    &:active {
      color: var(--up-icon-fill-color, #333);
      background-color: var(--up-icon-box-bg, var(--up-link-color, #fc0));

      img {
        filter: none;
        opacity: 1;
      }
    }
  }
  img {
    display: block;
    filter: brightness(0) invert(1);
    opacity: .6;
  }

  @media (hover: hover) {

    .show &:hover {
      img {
        opacity: 1;
      }
    }

    &.upShowOnHover {
      opacity: 0;
      .show &:hover {
        opacity: 1;
      }
    }
  }
}


/* https://wweb.dev/resources/loader-generator/ */
.upLoaderWrapper {

  position: absolute;
  top: 40%;
  left: 50%;
  /* z-index: -1; */
  transform: translate(-50%, -50%);
}
.upLoader {
  width: 80px;
  aspect-ratio: 1;
  background: conic-gradient(#000, var(--up-loader-color, hsl(0deg 0% 100% / .6))) content-box;
  border-radius: 50%;
  /* stylelint-disable-next-line property-no-vendor-prefix */
  -webkit-mask:
    repeating-conic-gradient(
      #0000 0deg,
      #000 1deg calc(360deg / 10 - 10deg - 1deg),
      #0000 calc(360deg / 10 - 10deg) calc(360deg / 10)
    ),
    radial-gradient(
      farthest-side,
      #0000 calc(98% - 10px),
      #000 calc(100% - 10px)
    );
  mask:
    repeating-conic-gradient(
      #0000 0deg,
      #000 1deg calc(360deg / 10 - 10deg - 1deg),
      #0000 calc(360deg / 10 - 10deg) calc(360deg / 10)
    ),
    radial-gradient(
      farthest-side,
      #0000 calc(98% - 10px),
      #000 calc(100% - 10px)
    );

  /* stylelint-disable-next-line property-no-vendor-prefix */
  -webkit-mask-composite: destination-in;
  mask-composite: intersect;
  animation: spin 1000ms infinite steps(10);
}
@keyframes spin { to { transform: rotate(1turn); } }