/* Layered folders adapted from the supplied opening-folder example. */
[data-color="sand"] { --folder-color: #d6b27c; }
[data-color="olive"] { --folder-color: #9eaf82; }
[data-color="coral"] { --folder-color: #df927c; }
[data-color="stone"] { --folder-color: #acb6c5; }
[data-color="yellow"] { --folder-color: #fbbf24; }

.folder-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 32px 28px;
  margin-bottom: 40px;
}
.folder-card { position: relative; min-width: 0; }
.folder-shape {
  display: block;
  position: relative;
  padding: 25px 8px 8px;
  border-radius: 8px;
  cursor: pointer;
}
.folder-art {
  --folder-radius: 16px;
  --folder-back-color: color-mix(in srgb, var(--folder-color, #d6b27c) 78%, #765126);
  --folder-low-color: color-mix(in srgb, var(--folder-color, #d6b27c) 90%, #b06416);
  position: relative;
  display: block;
  width: 100%;
  max-width: 240px;
  aspect-ratio: 3 / 2;
  margin: 0 auto;
  perspective: 1500px;
  pointer-events: none;
}
.folder-art > span {
  position: absolute;
  display: block;
  border-radius: var(--folder-radius);
  transform-origin: bottom;
  transition: transform 300ms ease, box-shadow 300ms ease;
}
.folder-back {
  inset: 0;
  border-top-left-radius: 0 !important;
  background: var(--folder-back-color);
  box-shadow: 0 5px 12px #31210c0c;
}
.folder-back::after,
.folder-back::before,
.folder-front::after,
.folder-front::before { content: ""; position: absolute; }
.folder-back::after {
  bottom: 99%;
  left: 0;
  width: 33.333%;
  height: 10%;
  border-radius: var(--folder-radius) var(--folder-radius) 0 0;
  background: var(--folder-back-color);
}
.folder-back::before {
  top: -9.375%;
  left: 31.458%;
  width: 6.667%;
  height: 10%;
  background: var(--folder-back-color);
  clip-path: polygon(0 35%, 0 100%, 50% 100%);
}
.folder-sheet { inset: 2.5% 1.667%; }
.folder-sheet-back {
  background: #a1a1aa;
  transform: rotateX(calc(-20deg * var(--folder-open, 0)));
}
.folder-sheet-middle {
  background: #d4d4d8;
  transform: rotateX(calc(-30deg * var(--folder-open, 0)));
}
.folder-sheet-front {
  background: #e4e4e7;
  transform: rotateX(calc(-38deg * var(--folder-open, 0)));
}
.folder-front {
  bottom: 0;
  width: 100%;
  height: 97.5%;
  border-top-right-radius: 0 !important;
  background: linear-gradient(to top, var(--folder-low-color), var(--folder-color, #d6b27c));
  box-shadow: inset 0 -1px 0 #49321018;
  transform: rotateX(calc(-46deg * var(--folder-open, 0))) translateY(calc(1px * var(--folder-open, 0)));
}
.folder-front::after {
  bottom: 99%;
  right: 0;
  width: 60.833%;
  height: 10.256%;
  background: var(--folder-color, #d6b27c);
  border-radius: var(--folder-radius) var(--folder-radius) 0 0;
}
.folder-front::before {
  top: -6.41%;
  right: 59.167%;
  width: 5%;
  height: 7.692%;
  background: var(--folder-color, #d6b27c);
  clip-path: polygon(100% 14%, 50% 100%, 100% 100%);
}
.folder-name {
  margin: 20px 32px 0 0;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.5;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}
.folder-meta { margin-top: 4px; color: #8b9498; font-size: 11px; }
.folder-card-actions { position: absolute; right: 0; bottom: 23px; display: flex; gap: 1px; }
.folder-card-actions .icon-button { width: 30px; height: 30px; padding: 7px; color: #737e78; border-radius: 4px; }
.folder-card-actions .icon { width: 16px; height: 16px; }
.folder-card:has(.star-button) .folder-name { margin-right: 63px; }
.folder-card-actions .star-button.is-starred { color: #496c54; }
.folder-card:focus-within,
.file-list tr:focus-within { --folder-open: 1; }
@media (hover: hover) and (pointer: fine) {
  .folder-card:hover,
  .file-list tr:hover { --folder-open: 1; }
  .folder-card:hover .folder-back { box-shadow: 0 20px 40px #0002; }
  .folder-card:hover .folder-front {
    box-shadow: inset 0 20px 40px color-mix(in srgb, var(--folder-color) 65%, transparent),
      inset 0 -20px 40px color-mix(in srgb, var(--folder-back-color) 45%, transparent);
  }
}
.list-file-icon.is-folder { height: 32px; background: transparent; }
.list-file-icon .folder-art { --folder-radius: 3px; }
.list-file-icon .folder-back { box-shadow: none; }

/* Show the selected colour on the folder before saving it. */
.folder-color-control { display: grid; grid-template-columns: 144px minmax(0, 1fr); gap: 26px; align-items: center; padding: 28px 0 8px; }
.folder-color-preview { --folder-open: .65; }
.folder-color-preview .folder-art { --folder-radius: 10px; }
/* Colour tiles and the neighbour wave adapted from Uiverse.io by Cobp. */
.folder-color-options { min-width: 0; }
.folder-color-control .color-picker {
  display: flex;
  flex-wrap: nowrap;
  width: fit-content;
  gap: 0;
  padding: 20px 12px 14px 8px;
  transform-style: preserve-3d;
  transform: perspective(1000px);
}
.folder-color-control .color-option {
  --swatch: var(--folder-color);
  position: relative;
  flex-shrink: 0;
  width: 32px;
  height: 40px;
  border: 0;
  transition: transform 500ms cubic-bezier(.175, .885, .32, 1.1);
}
.folder-color-control .color-option span {
  position: absolute;
  inset: 0;
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 6px;
  transform: scale(1.2);
  pointer-events: none;
  transition: transform 500ms cubic-bezier(.175, .885, .32, 1.1);
}
.folder-color-control .color-option::before {
  content: attr(data-color-name);
  position: absolute;
  left: 65%;
  bottom: 48px;
  z-index: 1;
  padding: 2px 6px;
  border-radius: 6px;
  background: #fff;
  color: #28352d;
  box-shadow: 0 2px 8px #0002;
  font-size: 8px;
  line-height: 12px;
  white-space: nowrap;
  transform: translateX(-50%);
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity 250ms ease, visibility 250ms ease;
}
.folder-color-control .color-option input:checked + span { outline: 2px solid #28352d; outline-offset: 2px; }
.folder-color-control .color-option input:checked + span::after { font-size: 14px; color: #28352d; }
.folder-color-control .color-option input:focus-visible + span { outline: 2px solid #2f81f7; outline-offset: 3px; }
.folder-color-control .color-option:has(input:focus-visible) { transform: scale(1.5); z-index: 30; }
.folder-color-control .color-option:has(input:focus-visible)::before { opacity: 1; visibility: visible; }
.folder-color-control .color-option:active span { transform: scale(1.1); }
.folder-color-name { display: block; margin-top: 10px; font-size: 12px; color: #737c77; }
@media (hover: hover) and (pointer: fine) {
  .folder-color-control .color-option:hover { transform: scale(1.5); z-index: 30; }
  .folder-color-control .color-option:hover::before { opacity: 1; visibility: visible; }
  .folder-color-control .color-option:hover + .color-option,
  .folder-color-control .color-option:has(+ .color-option:hover) { transform: scale(1.3); z-index: 20; }
  .folder-color-control .color-option:hover + .color-option + .color-option,
  .folder-color-control .color-option:has(+ .color-option + .color-option:hover) { transform: scale(1.15); z-index: 10; }
}

@media (max-width: 650px) {
  .folder-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px 16px; margin-bottom: 30px; }
  .folder-shape { padding: 18px 2px 8px; }
  .folder-art { --folder-radius: 11px; }
  .folder-name { font-size: 13px; margin-top: 17px; margin-right: 30px; }
  .folder-meta { font-size: 10px; margin-top: 3px; }
  .folder-card-actions { right: -4px; bottom: 18px; }
  .folder-card-actions .icon-button { width: 32px; height: 32px; padding: 8px; }
  .folder-color-control { grid-template-columns: 110px minmax(0, 1fr); gap: 24px; }
}
@media (max-width: 420px) {
  .folder-color-control { grid-template-columns: 100px minmax(0, 1fr); gap: 16px 22px; padding-top: 12px; }
  .folder-color-options { display: contents; }
  .folder-color-control .color-picker { grid-column: 1 / -1; grid-row: 1; justify-self: center; }
  .folder-color-preview { grid-column: 1; grid-row: 2; }
  .folder-color-name { grid-column: 2; grid-row: 2; margin: 0; }
}
@media (pointer: coarse) {
  .folder-color-control .color-picker { gap: 8px; padding: 16px 8px 8px; }
  .folder-color-control .color-option { width: 40px; height: 44px; }
  .folder-color-control .color-option span { transform: none; }
}
@media (prefers-reduced-motion: reduce) {
  .folder-art { --folder-open: 0; }
  .folder-art > span { transition: none; }
  .folder-color-control .color-option { transform: none !important; transition: none; }
  .folder-color-control .color-option span,
  .folder-color-control .color-option::before { transition: none; }
}