/* Artwork viewer. .viewer-frame is also the permalink page layout (ui ViewerFrame). */
.viewer-frame {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(300px, 380px);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: var(--surface);
  box-shadow: var(--shadow-sm);
}
.viewer-media {
  position: relative;
  display: grid;
  place-items: center;
  min-width: 0;
  min-height: 420px;
  margin: 0;
  background: var(--surface-sunken);
}
.viewer-media img {
  display: block;
  width: auto;
  height: auto;
  max-width: 100%;
  max-height: 80vh;
  object-fit: contain;
}
.viewer-panel {
  min-width: 0;
  padding: var(--space-7) var(--space-6);
  border-left: 1px solid var(--line);
  overflow: auto;
  overscroll-behavior: contain;
}
.viewer-panel > :first-child,
.viewer-handle + * {
  margin-top: 0;
}
.viewer-handle {
  display: none;
}
@media (max-width: 767.98px) {
  .viewer-frame {
    grid-template-columns: 1fr;
    margin-inline: calc(-1 * var(--gutter));
    border-inline: 0;
    border-radius: 0;
  }
  .viewer-media {
    min-height: 0;
  }
  .viewer-panel {
    border-left: 0;
    border-top: 1px solid var(--line);
    padding: var(--space-6) var(--gutter);
  }
}

/* The overlay */
.viewer {
  --pull: 0;
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  max-width: none;
  max-height: none;
  margin: 0;
  padding: 0;
  border: 0;
  overflow: hidden;
  color: var(--ink);
  background: color-mix(in srgb, var(--stage) calc((0.9 - var(--pull) * 0.75) * 100%), transparent);
}
.viewer::backdrop {
  background: transparent;
}
.viewer[open] {
  animation: fade-in var(--duration) var(--ease-out);
}
.viewer.is-closing {
  animation: fade-out var(--duration) var(--ease-in-out) forwards;
}
.viewer-stage {
  position: absolute;
  inset: var(--space-7) 96px;
  display: grid;
  place-items: center;
}
/* Desktop and tablet: the card hugs the artwork, so the space around it is backdrop
   (a click there closes). The details panel takes the image's height and scrolls;
   size containment keeps it from stretching the card. */
@media (min-width: 768px) {
  .viewer .viewer-frame {
    --viewer-panel: 380px;
    grid-template-columns: auto minmax(300px, var(--viewer-panel));
    width: auto;
    max-width: 100%;
    height: auto;
    min-height: min(100%, 560px);
    max-height: 100%;
    border: 0;
    box-shadow: var(--shadow-lg);
  }
  .viewer .viewer-panel {
    contain: size;
  }
  .viewer .viewer-error {
    grid-template-columns: auto;
    min-height: 0;
  }
  .viewer .viewer-media img {
    width: auto;
    height: auto;
    max-width: calc(100vw - 192px - var(--viewer-panel));
    max-height: calc(100dvh - 2 * var(--space-7));
  }
}
@media (min-width: 768px) and (max-width: 1023.98px) {
  .viewer .viewer-frame {
    --viewer-panel: 300px;
  }
}
.viewer .viewer-media {
  min-height: 0;
  background: var(--stage-media);
}
.viewer .enter {
  animation: frame-in var(--duration-slow) var(--ease-out);
}
.viewer .enter-next {
  animation: frame-from-right var(--duration-slow) var(--ease-out);
}
.viewer .enter-prev {
  animation: frame-from-left var(--duration-slow) var(--ease-out);
}
@keyframes frame-in {
  from {
    opacity: 0;
    transform: scale(0.97);
  }
}
@keyframes frame-from-right {
  from {
    opacity: 0;
    transform: translateX(48px);
  }
}
@keyframes frame-from-left {
  from {
    opacity: 0;
    transform: translateX(-48px);
  }
}
.viewer-close,
.viewer-nav {
  position: absolute;
  display: grid;
  place-items: center;
  width: var(--tap);
  height: var(--tap);
  min-height: 0;
  padding: 0;
  border: 0;
  border-radius: 50%;
  background: var(--stage-control);
  color: var(--on-image);
}
.viewer-close:hover,
.viewer-nav:hover {
  background: var(--stage-control-hover);
  color: var(--on-image);
  transform: none;
}
.viewer-close {
  top: var(--space-4);
  right: var(--space-4);
}
.viewer-nav {
  top: 50%;
  width: 52px;
  height: 52px;
  margin-top: -26px;
}
.viewer-nav.prev {
  left: var(--space-6);
}
.viewer-nav.next {
  right: var(--space-6);
}
.viewer-nav:disabled {
  opacity: 0.25;
}
.viewer-nav svg {
  width: 26px;
  height: 26px;
}
.viewer.is-loading .viewer-stage::after {
  content: "";
  position: absolute;
  width: 32px;
  height: 32px;
  border: 3px solid var(--stage-track);
  border-top-color: var(--on-image);
  border-radius: 50%;
  animation: spin 800ms linear infinite;
}
.viewer-error {
  display: grid;
  place-items: center;
  gap: var(--space-4);
  width: auto;
  height: auto;
  padding: var(--space-8);
  text-align: center;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
@media (max-width: 767.98px) {
  .viewer {
    --peek: calc(132px + var(--safe-bottom));
    background: color-mix(in srgb, var(--stage) calc((0.97 - var(--pull) * 0.8) * 100%), transparent);
  }
  .viewer-stage {
    inset: 0;
  }
  .viewer .viewer-frame {
    position: relative;
    display: block;
    width: 100%;
    height: 100%;
    border: 0;
    max-height: none;
    margin: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
  }
  .viewer .viewer-media {
    position: absolute;
    inset: calc(var(--safe-top) + 60px) 0 var(--peek) 0;
    background: transparent;
    touch-action: none;
  }
  .viewer .viewer-panel {
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    height: 86dvh;
    padding: var(--space-6) var(--space-5)
      calc(var(--safe-bottom) + var(--space-5));
    border: 0;
    border-radius: var(--radius-xl) var(--radius-xl) 0 0;
    background: var(--surface);
    overflow: hidden;
    touch-action: none;
    transform: translateY(calc(100% - var(--peek)));
    transition: transform var(--duration-slow) var(--ease-out);
  }
  .viewer.is-expanded .viewer-panel {
    transform: none;
    overflow: auto;
    touch-action: pan-y;
  }
  .viewer-handle {
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 28px;
    min-height: 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    background: transparent;
  }
  .viewer-handle:hover {
    background: transparent;
    transform: none;
  }
  .viewer-handle::after {
    content: "";
    position: absolute;
    top: 9px;
    left: 50%;
    width: 40px;
    height: 5px;
    margin-left: -20px;
    border-radius: var(--radius-pill);
    background: var(--line-strong);
  }
  .viewer-nav {
    display: none;
  }
  .viewer-close {
    top: calc(var(--safe-top) + 8px);
    right: 8px;
  }
}

/* Book artwork details, shared by the overlay and permalink. */
.artwork-permalink {
  padding-block: 24px;
}
.artwork-permalink > .book-back {
  display: inline-block;
  font-size: 13px;
  margin-bottom: 20px;
  color: var(--muted);
}
.viewer-book {
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 20px;
  margin-bottom: 22px;
}
.viewer-book img {
  width: 36px;
  height: 54px;
  object-fit: cover;
  border-radius: 3px;
  flex: none;
}
.viewer-book strong,
.viewer-book small {
  display: block;
}
.viewer-book strong {
  font-family: var(--font-serif);
  font-size: 24px;
  line-height: 1.1;
  font-weight: 400;
}
.viewer-book small {
  font-size: 10px;
  color: var(--muted);
  margin-bottom: 4px;
}
.viewer-byline {
  margin-bottom: 20px;
  font-size: 14px;
}
.viewer-byline > :is(a, span) {
  display: flex;
  gap: 10px;
  align-items: center;
  color: var(--ink);
}
.viewer-byline small {
  display: block;
  font-size: 11px;
  color: var(--muted);
  margin-top: 2px;
}
.viewer-description {
  font-size: 15px;
  line-height: 1.65;
  white-space: pre-wrap;
}
.viewer-date {
  font-size: 11px;
  line-height: 1.7;
  color: var(--muted);
  margin: 16px 0;
}
.viewer-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}
.viewer-actions form {
  margin: 0;
}
.viewer-actions button,
.viewer-actions .btn {
  font-size: 12px;
  min-height: 44px;
  padding: 8px 12px;
}
.viewer-actions > a:not(.btn) {
  font-size: 11px;
  color: var(--muted);
  padding: 10px;
}
.viewer-actions [aria-pressed="true"] {
  background: var(--accent-wash);
  color: var(--accent);
  border-color: var(--accent);
}
.viewer-neighbours {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  margin: 20px 0;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
}
.viewer-comments h2 {
  font-family: var(--font-serif);
  font-size: 27px;
  margin: 20px 0;
}
.viewer-comments h2 span {
  font: 12px var(--font-sans);
  color: var(--muted);
  margin-left: 5px;
}
.viewer-comments > .muted {
  font-size: 13px;
}
.viewer-comment {
  margin: 22px 0;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
  display: flow-root;
}
.comment-author {
  display: flex;
  gap: 8px;
  align-items: center;
  font-size: 12px;
}
.viewer-comment > time {
  font-size: 10px;
  color: var(--muted);
  display: block;
  margin: 6px 0;
}
.viewer-comment > p {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  font-size: 13px;
  line-height: 1.65;
  margin: 10px 0;
}
.comment-actions {
  display: flex;
  gap: 16px;
  align-items: start;
  font-size: 11px;
  color: var(--muted);
}
.comment-actions button {
  font-size: 11px;
  padding: 0;
  min-height: 44px;
}
.comment-actions summary {
  cursor: pointer;
  min-height: 44px;
  display: flex;
  align-items: center;
}
.comment-compose label {
  font-size: 12px;
}
.comment-compose button {
  font-size: 12px;
  min-height: 44px;
}
.comment-prompt {
  font-size: 13px;
  padding: 16px;
  background: var(--accent-wash);
  border-radius: var(--radius-md);
}
.viewer-panel .chiplist {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}
.viewer-panel .tag {
  font-size: 10px;
}
.viewer .viewer-neighbours {
  display: none;
}
.viewer-comments textarea {
  width: 100%;
}
@media (max-width: 767.98px) {
  .viewer .viewer-book {
    padding: 4px 0 14px;
    margin-bottom: 16px;
  }
  .viewer .viewer-book img {
    width: 28px;
    height: 42px;
  }
  .viewer .viewer-book strong {
    font-size: 22px;
  }
  .viewer .viewer-panel {
    padding-top: 32px;
  }
  .viewer .viewer-byline {
    margin-bottom: 12px;
  }
  .viewer.is-expanded .viewer-panel {
    touch-action: pan-y;
  }
  .artwork-permalink {
    padding-top: 12px;
  }
  .artwork-permalink .viewer-media {
    background: var(--stage-media);
  }
  .artwork-permalink .viewer-media img {
    max-height: 70vh;
  }
}

@media (max-width: 767.98px) {
  .viewer {
    background: color-mix(in srgb, var(--stage-media) calc((1 - var(--pull) * 0.75) * 100%), transparent);
  }
}