:root {
  --md-hue: 225deg;
  --md-default-fg-color: hsla(var(--md-hue), 15%, 90%, 0.82);
  --md-default-fg-color--light: hsla(var(--md-hue), 15%, 90%, 0.56);
  --md-default-fg-color--lightest: hsla(var(--md-hue), 15%, 90%, 0.12);
  --md-default-bg-color: hsla(var(--md-hue), 15%, 14%, 1);
  --md-code-bg-color: hsla(var(--md-hue), 15%, 18%, 1);
  --md-primary-fg-color: #ef5552;
  --md-accent-fg-color: #ff6e42;
  --md-accent-fg-color--transparent: #ff6e421a;
  --md-shadow-z1: 0 0.2rem 0.5rem #0000000d, 0 0 0.05rem #0000001a;
  --md-shadow-z2: 0 0.2rem 0.5rem #00000040, 0 0 0.05rem #00000040;
  --page-padding: 0.8rem;
  --grid-gap: 0.8rem;
  --page-max-width: 61rem;
  --card-radius: 0.2rem;
  --card-bg: var(--md-code-bg-color);
  --card-border: var(--md-default-fg-color--lightest);
  --text-color: var(--md-default-fg-color);
  --muted-color: var(--md-default-fg-color--light);
  --skeleton-base: hsla(var(--md-hue), 15%, 18%, 1);
  --skeleton-highlight: hsla(var(--md-hue), 15%, 24%, 1);
  --focus-color: var(--md-accent-fg-color);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-family: "Roboto", -apple-system, BlinkMacSystemFont, Helvetica, Arial, sans-serif;
  color: var(--text-color);
  background: var(--md-default-bg-color);
}

.gallery-page {
  width: min(100%, var(--page-max-width));
  margin: 0 auto;
  padding: 1.5rem var(--page-padding) 2.5rem;
}

.gallery-header {
  margin-bottom: 1rem;
}

.gallery-title {
  margin: 0;
  color: var(--md-default-fg-color--light);
  font-size: 2rem;
  font-weight: 300;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.gallery-subtitle {
  margin: 0.5rem 0 0;
  color: var(--muted-color);
  font-size: 0.8rem;
  line-height: 1.6;
}

.gallery-view-controls {
  display: inline-flex;
  gap: 0.25rem;
  margin: 0 0 1.5rem;
  padding: 0.25rem;
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  background: var(--md-code-bg-color);
  box-shadow: var(--md-shadow-z1);
}

.gallery-view-button {
  display: inline-grid;
  place-items: center;
  width: 2.25rem;
  height: 2.25rem;
  padding: 0;
  border: 1px solid transparent;
  border-radius: var(--card-radius);
  color: var(--muted-color);
  background: transparent;
  cursor: pointer;
  transition: color 125ms, background-color 125ms, border-color 125ms, box-shadow 125ms;
}

.gallery-view-button:hover {
  color: var(--text-color);
  background: var(--md-accent-fg-color--transparent);
}

.gallery-view-button:focus-visible {
  outline: 0.1rem solid var(--focus-color);
  outline-offset: 0.15rem;
}

.gallery-view-button.is-active {
  color: var(--md-accent-fg-color);
  border-color: #ff6e426b;
  background: var(--md-accent-fg-color--transparent);
  box-shadow: inset 0 0 0 1px #ff6e422e;
}

.gallery-view-icon {
  width: 1.15rem;
  height: 1.15rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.gallery-groups {
  display: grid;
  gap: 1.5rem;
}

.gallery-group {
  display: grid;
  gap: 0.65rem;
}

.gallery-group-title {
  margin: 0;
  color: var(--md-default-fg-color--light);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.4;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--grid-gap);
}

.gallery-card {
  display: block;
  position: relative;
  border-radius: var(--card-radius);
  overflow: hidden;
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  aspect-ratio: 2 / 3;
  box-shadow: var(--md-shadow-z1);
  transition: border-color 125ms, box-shadow 125ms;
}

.gallery-card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(
      90deg,
      var(--skeleton-base) 0%,
      var(--skeleton-highlight) 50%,
      var(--skeleton-base) 100%
    );
  background-size: 220% 100%;
  animation: gallery-skeleton 1.35s ease-in-out infinite;
  transition: opacity 0.22s ease;
}

.gallery-card:hover {
  border-color: transparent;
  box-shadow: var(--md-shadow-z2);
}

.gallery-card:focus-visible {
  outline: 0.1rem solid var(--focus-color);
  outline-offset: 0.2rem;
}

.gallery-image {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.22s ease;
}

.gallery-card.is-loaded::before {
  opacity: 0;
  pointer-events: none;
}

.gallery-card.is-loaded .gallery-image {
  opacity: 1;
}

.gallery-card.is-error::before {
  animation: none;
  background:
    linear-gradient(180deg, rgba(139, 32, 57, 0.45), rgba(48, 16, 24, 0.8));
}

.gallery-card.is-error .gallery-image {
  opacity: 0;
}

.gallery-empty {
  margin: 0;
  grid-column: 1 / -1;
  padding: 2rem 1.25rem;
  border-radius: var(--card-radius);
  background: var(--card-bg);
  color: var(--muted-color);
  text-align: center;
  box-shadow: inset 0 0 0 1px var(--card-border);
}

.gallery-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin-top: 1.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--card-border);
  color: var(--muted-color);
  font-size: 0.8rem;
}

.gallery-footer a {
  color: inherit;
  transition: color 125ms;
}

.gallery-footer a:hover,
.gallery-footer a:focus-visible {
  color: var(--md-accent-fg-color);
}

.gallery-footer a:focus-visible {
  outline: 0.1rem solid var(--focus-color);
  outline-offset: 0.2rem;
}

@keyframes gallery-skeleton {
  0% {
    background-position: 100% 0;
  }

  100% {
    background-position: -100% 0;
  }
}

@media (min-width: 900px) {
  .gallery-page {
    padding-top: 2rem;
    padding-bottom: 3rem;
  }

  .gallery-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 76rem) {
  .gallery-view-controls {
    position: fixed;
    top: 2rem;
    left: calc(50% + 31.3rem);
    z-index: 10;
    flex-direction: column;
    margin: 0;
  }
}