:root {
  color-scheme: light;
  font-family: Arial, Helvetica, sans-serif;
  background: #f4f6f8;
  color: #1d252d;
}

* {
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  min-height: 100%;
  margin: 0;
}

.graphic-document {
  width: 100%;
  height: 100%;
  background: var(--chroma);
}

.graphic-document.transparent {
  background: transparent;
}

.app {
  display: grid;
  min-height: 100vh;
  place-items: center;
  padding: 32px;
}

.shell {
  width: min(920px, 100%);
}

.panel {
  display: grid;
  gap: 20px;
  padding: 28px;
  border: 1px solid #d9e0e7;
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 14px 38px rgb(18 28 45 / 10%);
}

h1,
p {
  margin: 0;
}

h1 {
  font-size: 28px;
  line-height: 1.15;
}

form {
  display: grid;
  gap: 14px;
}

label {
  display: grid;
  gap: 6px;
  font-size: 13px;
  font-weight: 700;
}

.row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 10px;
}

input,
select,
textarea,
button {
  min-height: 42px;
  border: 1px solid #c8d2dc;
  border-radius: 6px;
  font: inherit;
}

input,
select,
textarea {
  width: 100%;
  padding: 0 12px;
  background: #fff;
}

textarea {
  min-height: 128px;
  padding-block: 10px;
  resize: vertical;
}

button {
  padding: 0 18px;
  border-color: #153f66;
  background: #153f66;
  color: #fff;
  font-weight: 700;
  cursor: pointer;
}

.controls {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 10px;
  align-items: end;
}

.collage-form {
  padding-top: 20px;
  border-top: 1px solid #d9e0e7;
}

.collage-controls {
  grid-template-columns: repeat(7, minmax(0, 1fr));
}

.checkbox-label {
  display: flex;
  min-height: 42px;
  align-items: center;
  gap: 8px;
}

.controls input[type="checkbox"] {
  width: 16px;
  min-height: 16px;
}

code {
  font-family: "Cascadia Mono", Consolas, monospace;
}

.graphic {
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background: var(--chroma);
}

.graphic.transparent {
  background: transparent;
}

.graphic.is-loading .stage {
  opacity: 0;
}

.graphic.is-ready .stage {
  opacity: 1;
}

.stage {
  position: relative;
  display: grid;
  width: min(100vw, var(--stage-width));
  height: min(100vh, var(--stage-height));
  margin: 0 auto;
  place-items: center;
  overflow: hidden;
  opacity: 1;
  transition: opacity 120ms linear;
}

.embed {
  display: grid;
  width: var(--embed-width, auto);
  height: var(--embed-height, auto);
  max-width: 92%;
  max-height: 92%;
  place-items: center;
  transform: scale(var(--scale));
  transform-origin: center;
}

.embed > iframe,
.embed > blockquote,
.embed > img,
.embed > video {
  display: block;
  max-width: 100%;
  max-height: 100%;
  border: 0;
}

.fit-cover .embed > iframe,
.fit-cover .embed > img,
.fit-cover .embed > video {
  width: 100vw;
  height: 100vh;
  object-fit: cover;
}

.collage-page {
  background: var(--chroma);
}

.collage-page.transparent {
  background: transparent;
}

.collage-stage {
  width: min(100vw, var(--stage-width));
  height: min(100vh, var(--stage-height));
  overflow: hidden;
  display: grid;
  justify-items: center;
  padding: var(--collage-spacing);
  -webkit-mask-image: linear-gradient(
    to bottom,
    transparent 0,
    #000 var(--collage-fade),
    #000 calc(100% - var(--collage-fade)),
    transparent 100%
  );
  mask-image: linear-gradient(
    to bottom,
    transparent 0,
    #000 var(--collage-fade),
    #000 calc(100% - var(--collage-fade)),
    transparent 100%
  );
}

.collage-track {
  display: flex;
  flex-direction: column;
  width: max-content;
  align-items: stretch;
  gap: var(--collage-spacing);
  animation: collage-scroll var(--collage-duration) linear infinite;
  will-change: transform;
}

.collage-group {
  display: grid;
  grid-template-columns: repeat(var(--collage-columns), minmax(0, var(--collage-card-width)));
  gap: var(--collage-spacing);
}

.collage-card {
  align-self: start;
  width: 100%;
  height: auto;
  max-width: var(--collage-card-width);
  overflow: hidden;
  transform: none;
}

.collage-card > iframe,
.collage-card > blockquote,
.collage-card > img,
.collage-card > video {
  width: 100% !important;
  max-width: 100% !important;
}

.collage-card iframe,
.collage-card blockquote,
.collage-card img,
.collage-card video,
.collage-card twitter-widget,
.collage-card .twitter-tweet,
.collage-card .bluesky-embed {
  width: 100% !important;
  max-width: 100% !important;
  box-sizing: border-box;
}

@keyframes collage-scroll {
  from {
    transform: translateY(0);
  }

  to {
    transform: translateY(calc(-50% - (var(--collage-spacing) / 2)));
  }
}

.error {
  border-color: #d77;
}

@media (max-width: 720px) {
  .app {
    padding: 16px;
  }

  .row,
  .controls {
    grid-template-columns: 1fr;
  }
}