html,
body {
  display: grid;
  grid-template-rows: auto 19fr;
  grid-template-areas: 'control' 'stack';
  transition: background-position linear 0.2s;
  margin: 0;
  background: linear-gradient(
    180deg,
    var(--black) 50%,
    var(--black) 50%,
    var(--r-blue) 50.25%,
    var(--c-aqua) 50.25%
  );
  background-position: 0 0%;
  background-size: auto 200%;
  padding-bottom: env(safe-area-inset-bottom);
  width: 100dvw;
  width: 100%;
  height: 100vh;
  overflow: hidden;
}

.control {
  display: flex;
  grid-area: control;
  flex-flow: nowrap row;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  padding: 1rem 0;
  width: 100%;
}

.stack {
  display: grid;
  position: relative;
  grid-template-rows: 1fr;
  grid-template-columns: 1fr minmax(100%, 50ch) 1fr;
  grid-area: stack;
  align-content: center;
  justify-items: center;
  padding: 1rem;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.stack:has(.buttons) {
  grid-template-rows: auto auto;
}

.stack .card:hover {
  transition-property: filter;
}

.stack .card:last-child {
  transform: scale(1);
  visibility: visible;
  filter: blur(0px);
  transition-property: filter, transform;
  box-shadow: 10px 10px 20px rgba(0, 0, 0, 0.5);
}

.stack .card:nth-last-child(2) {
  transform: translate(0px, -10px) scale(0.95);
  visibility: visible;
  transition-property: filter, transform;
}

.stack .card:nth-last-child(3) {
  transform: translate(0px, -10px) scale(0.95);
  visibility: visible;
  transition-property: filter, transform;
}

.stack .card {
  grid-gap: 1rem;
  display: grid;
  position: relative;
  top: 0;
  grid-template-rows: auto auto 1fr;
  grid-template-columns: 1fr 1fr;
  grid-template-areas: 'heading heading' 'content content' 'deny accept';
  grid-row: 1;
  grid-column: 2;
  align-content: space-evenly;
  align-items: start;
  align-self: center;
  transform: translate(0px, 0px);
  visibility: hidden;
  filter: blur(3px) saturate(0.8) brightness(0.8) blur(2px) blur(3px);
  transition: 0.2s linear;
  cursor: pointer;
  background-color: var(--white);
  padding: 1rem;
  max-width: min(50ch, 100%);
  height: min(100%, 1080px);
  min-height: 100%;
  overflow-y: hidden;
  touch-action: none;
}

.stack .card .heading {
  grid-area: heading;
  align-self: start;
}

h1 span,
h2 span,
h3 span,
h4 span,
h5 span,
h6 span {
  -webkit-box-decoration-break: clone;
  --headline-bg-col: var(--black) !important;
  display: inline;
  box-decoration-break: clone;
  padding: calc(var(--i-width) * 1.5ch);
  color: var(--white);
  font-weight: 800;
  line-height: 1.5;
  letter-spacing: -10;
}

.stack .card .content {
  grid-area: content;
  align-self: start;
  color: var(--black);
}

.stack .card .deny {
  grid-area: deny;
  align-self: end;
  justify-self: start;
  text-align: center;
}

.stack .card .deny * {
  color: #ff3300;
}

.stack .card .accept {
  grid-area: accept;
  align-self: end;
  justify-self: end;
  text-align: center;
}

.stack .card .accept * {
  color: #52f312;
}

.stack .card.dragging {
  cursor: grabbing;
}

.stack .card.deny {
  transition-property: background-color, transform;
  background-color: #ff3300;
}

.stack .card.accept {
  transition-property: background-color, transform;
  background-color: #52f312;
}

.stack div.result {
  display: grid;
  grid-row: 1;
  grid-column: 2;
  align-content: center;
  justify-items: left;
  border-radius: 30px;
  background-color: var(--white);
  padding: var(--space-m);
  height: fit-content;
}

.stack div.buttons {
  grid-row: 2;
  grid-column: 2;
  height: fit-content;
}

.stack div.result > div.result-card {
  background-color: var(--white);
}

* {
  -webkit-user-select: none;
  /* Safari */
  -ms-user-select: none;
  /* Standard syntax */
  box-sizing: border-box;
  /* IE 10 and IE 11 */
  user-select: none;
}

#undo {
  display: flex;
  flex-flow: nowrap row;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  height: 100%;
  overflow: hidden;
  color: var(--white);
}

#undo * {
  fill: var(--white);
  flex-shrink: 0;
  align-content: center;
  justify-content: center;
  height: 1.3rem;
  font-size: 1.3rem;
}

.notransition {
  -webkit-transition: none !important;
  -moz-transition: none !important;
  -o-transition: none !important;
  transition: none !important;
  transition-property: none !important;
}

#tutorial {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;
  box-sizing: border-box;
  background-color: var(--c-aqua);
  padding: 1rem;
  padding-bottom: calc(env(safe-area-inset-bottom) + 1rem);
  width: 100vw;
  height: 100%;
  overflow-y: scroll;
}