/* ロゴ、作品カード、操作UI、拡大ビューを担当する。
 * 配置の大枠は layout.css、端末差分は media.css に置く。 */

.site-logo,
.hero-wordmark {
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.05rem;
  letter-spacing: .05em;
  line-height: 1;
  text-decoration: none;
}

.hero-wordmark {
  margin-bottom: clamp(4rem, 8vw, 7rem);
  font-size: 1.35rem;
}

.logo-o,
.hero-logo-o {
  position: relative;
  display: inline-block;
}

.logo-o::after,
.hero-logo-o::after {
  position: absolute;
  top: 50%;
  left: 50%;
  /* ロゴのO内に置く朱点は本質的な固定寸法の装飾。 */
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--vermilion);
  content: "";
  transform: translate(-50%, -50%);
}

.hero-logo-o::after {
  display: none;
}

.hero-logo-dot {
  position: absolute;
  top: 50%;
  left: 50%;
  /* HeroロゴのOへ打つ朱点は本質的な固定寸法の装飾。 */
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--vermilion);
  transform: translate(-50%, -50%);
}

.site-nav a {
  font-family: Arial, "Hiragino Kaku Gothic ProN", sans-serif;
  font-size: .6875rem;
  font-weight: 600;
  letter-spacing: .16em;
  text-decoration: none;
  transition: color var(--duration-ui) var(--ease-gallery);
}

.light-switch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .75rem;
  /* 操作ボタンのタップ領域を44px以上に保つ。 */
  min-height: 44px;
  padding: .75rem 1.2rem;
  border: 1px solid var(--vermilion);
  color: var(--paper);
  background: var(--ink);
  font-family: Arial, "Hiragino Kaku Gothic ProN", sans-serif;
  font-size: .75rem;
  letter-spacing: .08em;
  white-space: nowrap;
  cursor: pointer;
  transition: color var(--duration-ui) var(--ease-gallery), background-color var(--duration-ui) var(--ease-gallery), border-color var(--duration-ui) var(--ease-gallery);
}

.switch-orb {
  position: relative;
  /* 墨と朱で照明状態を示すトグル装飾の固定寸法。 */
  width: 36px;
  height: 18px;
  flex: none;
  border: 1px solid var(--vermilion);
  border-radius: 999px;
  transition: border-color var(--duration-ui) var(--ease-gallery);
}

.switch-orb::after {
  position: absolute;
  top: 4px;
  left: 4px;
  /* トグル内を移動する朱点の固定寸法。 */
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--vermilion);
  content: "";
  transform: translateX(0);
  transition: transform var(--duration-ui) var(--ease-gallery), background-color var(--duration-ui) var(--ease-gallery);
}

.light-switch[aria-pressed="true"] {
  background: var(--vermilion);
}

.light-switch[aria-pressed="true"] .switch-orb {
  border-color: var(--paper);
}

.light-switch[aria-pressed="true"] .switch-orb::after {
  background: var(--paper);
  transform: translateX(18px);
}

.work-trigger {
  display: block;
  margin: 0;
  padding: 0;
  border: 0;
  color: inherit;
  background: transparent;
  text-align: inherit;
  cursor: zoom-in;
}

.work-figure {
  position: relative;
  background: var(--surface);
  transition: transform var(--duration-ui) var(--ease-gallery);
}

.work-plate {
  position: relative;
  z-index: 1;
  background: var(--surface);
  transition: transform var(--duration-ui) var(--ease-gallery);
}

.work-caption {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 1rem;
  font-size: .9375rem;
  line-height: 1.55;
}

.work-caption small {
  font-family: Arial, "Hiragino Kaku Gothic ProN", sans-serif;
  font-size: .6875rem;
  letter-spacing: .04em;
  text-align: right;
}

.work-index,
.process-number {
  font-family: Arial, "Hiragino Kaku Gothic ProN", sans-serif;
  font-size: .6875rem;
  font-weight: 700;
  letter-spacing: .12em;
}

.work-index {
  color: var(--muted-text);
  transition: color var(--duration-ui) var(--ease-gallery);
}

.process-number {
  color: var(--vermilion);
}

.work-note {
  display: none;
}

.dark-work {
  position: relative;
}

.dark-work figcaption,
.atelier-wide figcaption {
  margin-top: 1rem;
  color: var(--muted-text);
  font-family: Arial, "Hiragino Kaku Gothic ProN", sans-serif;
  font-size: .6875rem;
  letter-spacing: .13em;
}

.comparison-view {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3 / 2;
  background: var(--ink);
}

.comparison-view img {
  position: absolute;
  inset: 0;
  /* 比較枠を同じ内在比で全面充足させる画像制御。 */
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.comparison-after {
  clip-path: inset(0 46% 0 0);
}

.comparison-label {
  position: absolute;
  z-index: 2;
  bottom: .75rem;
  padding: .35rem .55rem;
  color: var(--paper);
  background: var(--ink);
  font-family: Arial, "Hiragino Kaku Gothic ProN", sans-serif;
  font-size: .6875rem;
  letter-spacing: .06em;
}

.comparison-label-before {
  right: .75rem;
}

.comparison-label-after {
  left: .75rem;
  color: var(--ink);
  background: var(--paper);
}

.comparison-control {
  display: block;
  color: var(--muted-text);
  font-family: Arial, "Hiragino Kaku Gothic ProN", sans-serif;
  font-size: .75rem;
  letter-spacing: .08em;
}

.comparison-range {
  /* 画像比較操作は表示画像と同じ横幅で操作できる必要がある。 */
  width: 100%;
  margin-top: .75rem;
  accent-color: var(--vermilion);
  cursor: ew-resize;
}

.commission-card {
  position: relative;
  display: block;
  overflow: hidden;
  padding: clamp(2rem, 4vw, 3.5rem) clamp(1.25rem, 2.5vw, 2rem);
  background: var(--surface);
  text-decoration: none;
  transition: transform var(--duration-ui) var(--ease-gallery);
}

.commission-card::before {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg, transparent 28%, rgba(212, 61, 42, .14) 50%, transparent 72%);
  content: "";
  opacity: 0;
  pointer-events: none;
  transform: translateX(-105%);
  transition: transform var(--duration-ui) var(--ease-gallery), opacity var(--duration-ui) var(--ease-gallery);
}

.commission-card::after {
  position: absolute;
  inset: 0;
  border: 1px solid var(--vermilion);
  content: "";
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--duration-ui) var(--ease-gallery);
}

.commission-card span,
.commission-card strong,
.commission-card small {
  position: relative;
  display: block;
}

.commission-card strong {
  margin-top: 2rem;
  font-size: var(--type-card);
  font-weight: 500;
}

.commission-card small {
  margin-top: 2.5rem;
  font-family: Arial, "Hiragino Kaku Gothic ProN", sans-serif;
  font-size: .6875rem;
  letter-spacing: .1em;
}

.commission-card:focus-visible::before {
  opacity: 1;
  transform: translateX(105%);
}

.commission-card:focus-visible {
  transform: translateY(-4px);
}

.commission-card:focus-visible::after {
  opacity: 1;
}

.contact-link {
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  padding: .8rem 0;
  border-bottom: 1px solid currentColor;
  font-size: var(--type-card);
  text-decoration: none;
  transition: color var(--duration-ui) var(--ease-gallery);
}

.stamp-button {
  /* 来場記録ボタンのタップ領域を44px以上に保つ。 */
  min-height: 44px;
  margin-top: 1.5rem;
  padding: .75rem 1rem;
  border: 1px solid currentColor;
  background: transparent;
  cursor: pointer;
  transition: color var(--duration-ui) var(--ease-gallery), background-color var(--duration-ui) var(--ease-gallery), border-color var(--duration-ui) var(--ease-gallery);
}

.visitor-stamp {
  /* 朱印として判読できる円形装飾の固定寸法。 */
  width: 140px;
  height: 140px;
  display: grid;
  margin-top: 2rem;
  border: 3px double var(--vermilion);
  border-radius: 50%;
  place-items: center;
  color: var(--vermilion);
  font-family: Arial, "Hiragino Kaku Gothic ProN", sans-serif;
  line-height: 1;
  opacity: 0;
  transform: rotate(-18deg) scale(1.7);
}

.visitor-stamp span,
.visitor-stamp strong,
.visitor-stamp small {
  grid-area: 1 / 1;
}

.visitor-stamp span {
  transform: translateY(-2.3rem);
  font-size: .6875rem;
  letter-spacing: .18em;
}

.visitor-stamp strong {
  font-size: 2rem;
  font-weight: 500;
}

.visitor-stamp small {
  transform: translateY(2.35rem);
  font-size: .625rem;
  letter-spacing: .18em;
}

.visitor-stamp.is-stamped {
  opacity: 1;
  transform: rotate(-8deg) scale(1);
}

.stamp-status {
  margin-top: 1rem;
  color: var(--muted-text);
  font-size: .75rem;
}

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 100;
  color: var(--paper);
}

.lightbox::before {
  position: fixed;
  inset: 0;
  z-index: 0;
  background: rgba(28, 28, 26, .985);
  content: "";
  opacity: 0;
  transition: opacity .44s var(--ease-gallery);
}

.lightbox.is-visible::before {
  opacity: 1;
}

.lightbox-stage {
  position: fixed;
  inset: 4rem clamp(1.5rem, 4vw, 4rem) 2rem;
  z-index: 1;
  display: grid;
  align-items: center;
  overflow: hidden;
  overscroll-behavior: none;
}

.lightbox-flight {
  position: fixed;
  z-index: 3;
  /* FLIP中だけ存在する画像。寸法は実測rectへ静的固定し、補間はtransformで行う。 */
  max-width: none;
  margin: 0;
  pointer-events: none;
  object-fit: contain;
  transform-origin: top left;
  will-change: transform, opacity;
}

.lightbox .work-figure {
  display: grid;
  grid-template-columns: minmax(0, 1.72fr) minmax(15rem, .52fr);
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: center;
  color: var(--paper);
  background: transparent;
  text-align: left;
}

.lightbox .work-image {
  /* 縦横比を保ったまま拡大画像をビューポート内へ収める内在サイズ制御。 */
  width: auto;
  height: auto;
  max-height: 85dvh;
  margin-inline: auto;
  object-fit: contain;
}

.lightbox .work-plate {
  align-self: center;
  border-top: 1px solid var(--vermilion);
  color: var(--ink);
  background: var(--paper);
}

.lightbox .work-caption {
  display: block;
  padding: 2rem 2rem .55rem;
  color: var(--ink);
  font-size: var(--type-card);
}

.lightbox .work-caption > span,
.lightbox .work-caption small {
  display: block;
}

.lightbox .work-caption small {
  margin-top: 1rem;
  color: rgba(28, 28, 26, .68);
  text-align: left;
}

.lightbox .work-caption .work-index {
  display: block;
  margin-bottom: .8rem;
  color: var(--vermilion);
}

.lightbox .work-index::before {
  content: "WORK ";
}

.lightbox .work-note {
  display: block;
  margin: 0;
  padding: .55rem 2rem 2rem;
  color: var(--ink);
  font-size: .9375rem;
  line-height: 1.9;
}

.lightbox-close {
  position: fixed;
  top: .65rem;
  right: .65rem;
  z-index: 2;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  /* 閉じるボタンのタップ領域を44pxに固定する。 */
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--vermilion);
  color: var(--paper);
  background: var(--ink);
  font-family: Arial, sans-serif;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
}

.atelier-hotspot {
  --plate-shift-x: -50%;
  position: absolute;
  top: var(--hotspot-y);
  left: var(--hotspot-x);
  z-index: 3;
  /* 画像注記をタップしやすい44px領域に固定する。 */
  width: 44px;
  height: 44px;
  padding: 0;
  border: 0;
  background: transparent;
  cursor: pointer;
  transform: translate(-50%, -50%);
}

.hotspot-marker {
  position: absolute;
  top: 50%;
  left: 50%;
  /* 画像内の注記点として判読できる固定寸法。 */
  width: 16px;
  height: 16px;
  border: 1px solid var(--paper);
  border-radius: 50%;
  background: var(--vermilion);
  transform: translate(-50%, -50%);
  transition: transform var(--duration-ui) var(--ease-gallery), background-color var(--duration-ui) var(--ease-gallery);
}

.hotspot-marker::after {
  position: absolute;
  inset: 4px;
  border-radius: 50%;
  background: var(--paper);
  content: "";
}

.hotspot-plate {
  position: absolute;
  top: calc(100% + .4rem);
  left: 50%;
  z-index: 2;
  padding: .65rem .8rem;
  border-top: 1px solid var(--vermilion);
  color: var(--ink);
  background: var(--paper);
  font-family: Arial, "Hiragino Kaku Gothic ProN", sans-serif;
  font-size: .6875rem;
  line-height: 1.55;
  text-align: left;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translate(var(--plate-shift-x), .4rem);
  transition: opacity var(--duration-ui) var(--ease-gallery), transform var(--duration-ui) var(--ease-gallery);
}

.hotspot-plate strong,
.hotspot-plate span {
  display: block;
}

.hotspot-plate strong {
  margin-bottom: .2rem;
  color: var(--vermilion);
  font-size: .625rem;
  letter-spacing: .12em;
}

.hotspot-plate-above .hotspot-plate {
  top: auto;
  bottom: calc(100% + .4rem);
  transform: translate(var(--plate-shift-x), -.4rem);
}

.atelier-hotspot.is-open .hotspot-marker,
.atelier-hotspot:focus-visible .hotspot-marker {
  background: var(--ink);
  transform: translate(-50%, -50%) scale(1.12);
}

.atelier-hotspot.is-open .hotspot-plate,
.atelier-hotspot:focus-visible .hotspot-plate {
  opacity: 1;
  visibility: visible;
  transform: translate(var(--plate-shift-x), 0);
}