/* ===== root fallback ===== */
:root {
  --torem: 0.0625rem; /* 未定義環境用 */
  /* 色 */
  --color-key: #08254f;
  --color-dark: #333333;
  --color-grey: #f4f5f9;
  --color-light: #fefefe;
  --color-dark-grey: #7d8797;

  /* filter関連の色 */
  --font-color: var(--color-dark);
  --font-color-hover: var(--color-dark-grey);
  --font-color-active: var(--color-light);
  --font-color-key: var(--color-key);
  --bg-color: var(--color-light);
  --bg-color-hover: var(--color-grey);
  --bg-color-active: var(--color-dark-grey);
  --box-shadow-color: var(--color-grey);
  --label-color: var(--color-dark-grey);

  /* grid関連の色 */
  --border-color: var(--color-dark-grey);

  /* font size */
  --font-size-xs: clamp(10 * var(--torem), 0.581rem + 0.19vw, 12 * var(--torem));
  --font-size-sm: clamp(12 * var(--torem), 0.706rem + 0.19vw, 14 * var(--torem));
  --font-size-md: clamp(14 * var(--torem), 0.831rem + 0.19vw, 16 * var(--torem));
  --heading-size: var(var(--font-size-sm));

  /* headerの高さ */
  --header: var(--header-height, 120px);
}
/* ===== Meta ===== */
.p-content__meta {
  small {
    display: block;
    margin-block-start: 0.5em;
    font-size: var(--font-size-xs);
    color: var(--color-dark-grey);
  }
}

/* ===== Toolbar layout ===== */
.animref-toolbar {
  position: sticky;
  inset-block-start: calc(var(--header-height) + 2em);
  margin-block-end: 2rem;
  padding-inline: 1.5em;
  padding-block: 0.5em;
  background-color: var(--bg-color);
  border: 1px solid var(--label-color);
  border-radius: 0.5rem;
  width: 200px;
  height: 2em;
  box-sizing: content-box;
  overflow: hidden;
  z-index: 2;

  /* width と height の変更をアニメーション */
  transition: width 0.3s ease, height 0.3s ease, box-shadow 0.3s ease;
  will-change: width, height, box-shadow;
}

.animref-toolbar.active {
  width: 100%;
  height: 70vh;
  font-size: var(--heading-size);
  box-sizing: border-box;
  box-shadow: 2px 2px 5px 0px rgba(125, 125, 125, 0.3);

  @media screen and (min-width: 473px) {
    height: 55vh;
  }
  @media screen and (min-width: 618px) {
    height: 45vh;
  }
}

.animref-toolbar .header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--heading-size);
}
.animref-toolbar .title {
  display: block;
  color: var(--font-color);
  font-weight: 700;
  margin-block-end: 0.2em;
}
.animref-toolbar .switch {
  position: relative;
  width: 1em;
  aspect-ratio: 1 / 1;
  font-size: 30px;
  border: none;
  background-color: transparent;
}
.animref-toolbar .switch::before,
.animref-toolbar .switch::after {
  position: absolute;
  inset-block: 0;
  inset-inline-end: 0;
  margin: auto;
  content: "";
  width: 0.8em;
  height: 2px;
  background-color: var(--border-color);
  transition: background-color 0.4s, transform 0.3s, width 0.3s;
  will-change: background-color, transform;
}
.animref-toolbar .switch::before {
  width: 0.8em;
  transform: translateY(-3px);
}
.animref-toolbar .switch::after {
  width: 0.6em;
  transform: translateY(3px);
}
.animref-toolbar .switch:focus-visible::before,
.animref-toolbar .switch:focus-visible::after {
  background-color: var(--font-color);
}
@media (any-hover) {
  .animref-toolbar .switch:hover::before,
  .animref-toolbar .switch:hover::after {
    background-color: var(--font-color);
  }
}
.animref-toolbar.active .switch::before {
  width: 0.6em;
  inset-inline: 0;
  transform: translate(0) rotate(45deg);
}
.animref-toolbar.active .switch::after {
  inset-inline: 0;
  transform: translate(0) rotate(-45deg);
}
.animref-toolbar .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5em;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s;
}
.animref-toolbar.active .container {
  opacity: 1;
  visibility: visible;
}
.animref-toolbar .group {
}
.animref-toolbar .label {
  display: block;
  font-size: var(--font-size-xs);
  color: var(--label-color);
}

/* ===== Pill buttons ===== */
.animref-toolbar .btns {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75em 0.75em;
  padding-block: 0.3em;
}
.animref-toolbar .btn {
  -webkit-appearance: none;
  appearance: none;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  padding: 0.4em 0.875em;
  background: var(--bg-color);
  color: var(--font-color);
  font-size: var(--font-size-sm);
  border: none;
  box-shadow: 2px 2px 3px 1px var(--box-shadow-color);
  line-height: 1;
  cursor: pointer;
  transition: color 0.3s, background-color 0.3s, box-shadow 0.3s;
  user-select: none;
}

.animref-toolbar .btn:focus-visible {
  color: var(--font-color-hover);
  background-color: var(--bg-color-hover);
  box-shadow: 1px 1px 2px 0 var(--box-shadow-color);
}

@media (any-hover) {
  .animref-toolbar .btn:hover {
    color: var(--font-color-hover);
    background-color: var(--bg-color-hover);
    box-shadow: 1px 1px 2px 0 var(--box-shadow-color);
  }
}

.animref-toolbar .btn.active {
  color: var(--font-color-active);
  background-color: var(--bg-color-active);
}
.animref-toolbar .btn.active:focus-visible {
  outline: 2px solid color-mix(in oklab, var(--bg-color-active) 65%, white);
  outline-offset: 2px;
}
@media (any-hover) {
  .animref-toolbar .btn.active:hover {
    color: var(--font-color-hover);
    background-color: var(--bg-color-hover);
  }
}

/* 動きを苦手とするユーザー配慮 */
@media (prefers-reduced-motion: reduce) {
  .animref-toolbar .btn {
    transition: none;
  }
}

/* ===== Grid/cards ===== */
.animref-grid {
  position: relative;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  column-gap: 3rem;
  row-gap: 2rem;
}
.animref-wrap {
  position: relative;
}
.animref-card {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  box-shadow: 2px 2px 3px 1px var(--color-grey);
}
.animref-card .title {
  margin: 0.5em 0.2em;
  padding-inline-start: 0.5em;
  font-size: var(--font-size-md);
  font-weight: 400;
  color: var(--font-color-key);
  border-inline-start: 2px solid var(--font-color-key);
  letter-spacing: 0.1em;
  transition: color 0.4s, border-color 0.4s;
  will-change: color, border-color;
}
.animref-card .thumb {
  overflow: hidden;
}
.animref-card .thumb img {
  display: block;
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: scale 0.4s;
}
.animref-card .thumb::before {
  position: absolute;
  inset: 0;
  content: "";
  background-color: transparent;
  pointer-events: auto;
}
.animref-card:has(.thumb:focus-visible) img {
  scale: 1.1;
}
.animref-card:has(.thumb:focus-visible) .title {
  color: var(--font-color-hover);
}
@media (any-hover) {
  .animref-card:has(.thumb:hover) img {
    scale: 1.1;
  }
  .animref-card:has(.thumb:hover) .title {
    color: var(--font-color-hover);
    border-color: var(--font-color-hover);
  }
}
.animref-card .category {
  display: flex;
  justify-content: flex-start;
  flex-wrap: wrap;
  padding-inline: 0.5em;
  margin-bottom: 0.5em;
  gap: 0.5em;
}
.animref-card .category li {
  padding-block: 0.2em;
  padding-inline: 0.5em;
  color: var(--color-light);
  background-color: var(--color-dark-grey);
  border-radius: 1em;
  font-size: 0.6em;
  text-align: center;
}
.animref-card .category li::before,
.animref-card .category li::after {
  content: none;
}