/* ===========================================================
   斎場御嶽プロジェクト 上映スペース 新装
   open.kari-ai.com/seifa-utaki/
   設計書 v4.0 に従った Phase 1 骨格
   =========================================================== */

:root {
  /* 背景 — 8割が黒の世界 */
  --bg-primary: #0a0a0a;
  --bg-secondary: #1a1a1a;
  --bg-warm: #2a1f1a;
  --bg-overlay: rgba(0, 0, 0, 0.5);
  --bg-deep: #050505;

  /* テキスト — 2割が光 */
  --text-primary: #f0e6d2;
  --text-secondary: #c4b89e;
  --text-muted: #888888;
  --text-dim: rgba(255, 255, 255, 0.3);

  /* アクセント — 御嶽の色彩 */
  --accent-warm: #d4a574;
  --accent-deep: #8b5a2b;
  --accent-cosmic: #4a90e2;
  --accent-gold: rgba(197, 150, 58, 0.85);
  --accent-gold-dim: rgba(197, 150, 58, 0.5);

  /* タイポグラフィ */
  --font-jp-mincho: 'Noto Serif JP', 'Hiragino Mincho ProN', 'Yu Mincho', serif;
  --font-jp-gothic: 'Noto Sans JP', 'Hiragino Sans', 'Yu Gothic', sans-serif;
  --font-en-serif: 'Cormorant Garamond', 'Times New Roman', serif;
  --font-en-mono: 'Courier New', monospace;

  /* フォントサイズ */
  --fs-hero: 80px;
  --fs-section-title: 56px;
  --fs-subsection: 32px;
  --fs-body-large: 20px;
  --fs-body: 16px;
  --fs-caption: 14px;
  --fs-hud: 0.72rem;
  --fs-hud-small: 0.6rem;

  /* 行間 */
  --lh-tight: 1.3;
  --lh-normal: 1.6;
  --lh-loose: 2.0;

  /* スペーシング */
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 32px;
  --space-lg: 64px;
  --space-xl: 128px;
  --space-section: 160px;

  /* イージング */
  --ease-quietly: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-breathe: cubic-bezier(0.4, 0, 0.6, 1);

  /* 持続時間 */
  --duration-fast: 0.3s;
  --duration-normal: 0.6s;
  --duration-slow: 1.5s;
  --duration-very-slow: 3s;
  --duration-ken-burns: 25s;

  /* グリッド */
  --container-max: 1200px;
  --gutter: 24px;
}

@media (max-width: 1440px) {
  :root {
    --fs-hero: 72px;
  }
}

@media (max-width: 1024px) {
  :root {
    --fs-hero: 56px;
    --fs-section-title: 44px;
    --fs-subsection: 28px;
    --space-section: 120px;
  }
}

@media (max-width: 768px) {
  :root {
    --fs-hero: 44px;
    --fs-section-title: 32px;
    --fs-subsection: 24px;
    --space-section: 100px;
    --gutter: 20px;
  }
}

@media (max-width: 430px) {
  :root {
    --fs-hero: 36px;
    --fs-section-title: 26px;
    --fs-subsection: 20px;
    --fs-body-large: 17px;
    --space-section: 80px;
    --space-xl: 80px;
    --gutter: 16px;
  }
}

/* ====== Base ====== */

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-body);
  line-height: var(--lh-normal);
  font-weight: 400;
  overflow-x: hidden;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ====== Section base ====== */

.section {
  padding: var(--space-section) 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-lg);
}

.section-eyebrow {
  display: block;
  font-family: var(--font-en-serif);
  font-size: var(--fs-caption);
  letter-spacing: 0.3em;
  color: var(--accent-warm);
  text-transform: uppercase;
  margin-bottom: var(--space-md);
}

.section-title {
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-section-title);
  font-weight: 500;
  color: var(--text-primary);
  line-height: var(--lh-tight);
  letter-spacing: 0.05em;
  margin-bottom: var(--space-md);
}

.section-lead {
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-body-large);
  color: var(--text-secondary);
  line-height: var(--lh-loose);
  text-align: center;
}

/* ====== Header (ヒーロー内に絶対配置) ====== */

.site-header {
  position: absolute;
  top: 24px;
  left: 24px;
  z-index: 10;
}

.site-header .logo {
  font-family: var(--font-en-serif);
  font-size: 1.4rem;
  letter-spacing: 0.18em;
  color: var(--text-primary);
  font-weight: 500;
  transition: color var(--duration-fast) var(--ease-quietly);
  display: inline-block;
}

.site-header .logo:hover {
  color: var(--accent-warm);
}

/* ====== Section 4-1: ヒーロー ====== */

.hero {
  position: relative;
  height: 100vh;
  min-height: 700px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}

.hero-media {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero-image,
.hero-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-image {
  z-index: 1;
}

.hero-video {
  z-index: 2;
  opacity: 0;
  transition: opacity var(--duration-slow) var(--ease-quietly);
}

.hero-video.is-ready {
  opacity: 1;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 3;
  background: linear-gradient(180deg,
    rgba(10, 10, 10, 0.45) 0%,
    rgba(10, 10, 10, 0.55) 45%,
    rgba(10, 10, 10, 0.85) 100%);
}

.hero-content {
  position: relative;
  z-index: 5;
  padding: 0 var(--gutter);
  max-width: var(--container-max);
}

.hero-title {
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-hero);
  line-height: var(--lh-tight);
  font-weight: 400;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-lg);
}

.hero-subtitle {
  font-family: var(--font-jp-gothic);
  font-size: var(--fs-body-large);
  color: var(--text-secondary);
  letter-spacing: 0.15em;
  line-height: var(--lh-loose);
  font-weight: 300;
}

/* ====== HUD オーバーレイ ====== */

.hud {
  position: absolute;
  inset: 24px;
  z-index: 4;
  pointer-events: none;
  font-family: var(--font-en-mono);
  font-size: var(--fs-hud);
  color: var(--accent-gold);
  letter-spacing: 0.05em;
}

.hud-corner {
  position: absolute;
  width: 30px;
  height: 30px;
  border: 1px solid rgba(197, 150, 58, 0.3);
}

.hud-corner-tl { top: 0; left: 0; border-right: none; border-bottom: none; }
.hud-corner-tr { top: 0; right: 0; border-left: none; border-bottom: none; }
.hud-corner-bl { bottom: 0; left: 0; border-right: none; border-top: none; }
.hud-corner-br { bottom: 0; right: 0; border-left: none; border-top: none; }

.hud-block {
  position: absolute;
  line-height: 1.5;
}

.hud-tl { top: 86px; left: 24px; }
.hud-tr { top: 16px; right: 24px; text-align: right; }
.hud-bl { bottom: 16px; left: 24px; }
.hud-br { bottom: 16px; right: 24px; text-align: right; }

.hud-label {
  font-size: var(--fs-hud-small);
  letter-spacing: 0.25em;
  color: var(--accent-gold-dim);
  margin-bottom: 4px;
  text-transform: uppercase;
}

.hud-value {
  display: block;
}

/* ====== Scroll indicator ====== */

.scroll-indicator {
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  color: var(--text-secondary);
  font-family: var(--font-en-serif);
  font-size: var(--fs-hud-small);
  letter-spacing: 0.3em;
  opacity: 0.7;
}

.scroll-indicator .scroll-line {
  width: 1px;
  height: 60px;
  background: var(--text-secondary);
  transform-origin: top;
}

/* ====== Section 4-2: 本質 ====== */

.section-essence {
  text-align: center;
  position: relative;
  overflow: hidden;
}

.section-essence .ambient-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  opacity: 0.08;
  pointer-events: none;
}

.section-essence .ambient-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.section-essence .container {
  position: relative;
  z-index: 1;
}

.section-essence .body-text {
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-body-large);
  line-height: var(--lh-loose);
  color: var(--text-secondary);
  max-width: 720px;
  margin: 0 auto;
}

.section-essence .body-text + .body-text {
  margin-top: var(--space-md);
}

/* ====== Section 4-3: 4作品 ====== */

.works-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

@media (max-width: 768px) {
  .works-grid {
    grid-template-columns: 1fr;
  }
}

.work-card {
  background: var(--bg-secondary);
  overflow: hidden;
  transition: transform var(--duration-normal) var(--ease-quietly);
}

.work-card:hover {
  transform: translateY(-4px);
}

.work-media {
  aspect-ratio: 16 / 10;
  position: relative;
  overflow: hidden;
  background: var(--bg-deep);
}

.work-media .work-poster,
.work-media .work-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  inset: 0;
}

/* 常時動画表示。ポスター画像は video の poster 属性で読み込み中のフォールバック。
   img.work-poster は alt(画像説明)を残したまま不可視化。 */
.work-media .work-video {
  opacity: 1;
}

.work-media .work-poster {
  opacity: 0;
}

.work-media .image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-deep) 100%);
  color: var(--text-muted);
  font-family: var(--font-jp-gothic);
  font-size: var(--fs-caption);
  letter-spacing: 0.2em;
  border: 1px dashed rgba(212, 165, 116, 0.2);
  text-align: center;
  padding: var(--space-md);
}

.work-info {
  padding: var(--space-md);
  position: relative;
}

.work-number {
  position: absolute;
  top: var(--space-md);
  right: var(--space-md);
  font-family: var(--font-en-serif);
  font-size: 24px;
  letter-spacing: 0.1em;
  color: var(--accent-warm);
  opacity: 0.8;
}

.work-title {
  font-family: var(--font-jp-mincho);
  font-size: 24px;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
  padding-right: 50px;
}

.work-duration {
  font-family: var(--font-en-mono);
  font-size: var(--fs-caption);
  letter-spacing: 0.2em;
  color: var(--accent-warm);
  margin-bottom: var(--space-sm);
}

.work-description {
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-body);
  line-height: var(--lh-loose);
  color: var(--text-secondary);
}

/* ====== Section 4-4: 五感 ====== */

.senses-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

@media (max-width: 768px) {
  .senses-grid {
    grid-template-columns: 1fr;
  }
}

.sense-card {
  background: var(--bg-secondary);
}

.sense-media {
  aspect-ratio: 16 / 10;
  overflow: hidden;
}

.sense-media img,
.sense-media .image-placeholder {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.sense-info {
  padding: var(--space-md);
}

.sense-eyebrow {
  font-family: var(--font-en-serif);
  font-size: var(--fs-caption);
  letter-spacing: 0.3em;
  color: var(--accent-warm);
  margin-bottom: var(--space-xs);
}

.sense-title {
  font-family: var(--font-jp-mincho);
  font-size: 22px;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.sense-description {
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-body);
  line-height: var(--lh-loose);
  color: var(--text-secondary);
}

/* 室内ARメニュー(スマホモック) */

.indoor-ar {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: center;
  margin-top: var(--space-xl);
}

@media (max-width: 768px) {
  .indoor-ar {
    grid-template-columns: 1fr;
  }
}

.phone-mock {
  position: relative;
  max-width: 360px;
  margin: 0 auto;
  border-radius: 32px;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6),
              0 0 0 1px rgba(212, 165, 116, 0.2);
}

.phone-mock img {
  width: 100%;
  display: block;
}

.indoor-ar-text .section-eyebrow {
  margin-bottom: var(--space-sm);
}

.indoor-ar-text h4 {
  font-family: var(--font-jp-mincho);
  font-size: 24px;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  line-height: var(--lh-tight);
  margin-bottom: var(--space-md);
}

.indoor-ar-text p {
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-body);
  line-height: var(--lh-loose);
  color: var(--text-secondary);
}

/* ====== Section 4-5: 衣装体験 ====== */

.costume-pair {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: start;
  margin: var(--space-lg) auto 0;
  max-width: 960px;
}

@media (max-width: 768px) {
  .costume-pair {
    grid-template-columns: 1fr;
  }
}

.costume-figure {
  position: relative;
}

.costume-figure img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
}

.costume-after {
  position: relative;
}

.costume-after .variant-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-quietly);
}

.costume-after .variant-image:first-child {
  position: relative;
}

.costume-after .variant-image.active {
  opacity: 1;
}

.variant-selector {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  margin-top: var(--space-md);
  flex-wrap: wrap;
}

.variant-button {
  background: transparent;
  border: 1px solid var(--accent-warm);
  color: var(--accent-warm);
  padding: var(--space-xs) var(--space-md);
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-caption);
  letter-spacing: 0.1em;
  transition: all var(--duration-fast) var(--ease-quietly);
}

.variant-button:hover,
.variant-button.active {
  background: var(--accent-warm);
  color: var(--bg-primary);
}

.costume-choice-text {
  text-align: center;
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-body-large);
  line-height: var(--lh-loose);
  color: var(--text-secondary);
  margin-top: var(--space-lg);
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

/* 世界遺産記念フォトフレーム */

.photoframe-section {
  margin-top: var(--space-xl);
  text-align: center;
}

.photoframe-section h3 {
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-subsection);
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.photoframe-section p {
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-body);
  line-height: var(--lh-loose);
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
}

.photoframe-gallery {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  margin-top: var(--space-lg);
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.photoframe-gallery img {
  max-width: 100%;
  height: auto;
  max-height: 600px;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.5);
  flex: 0 1 auto;
}

@media (max-width: 640px) {
  .photoframe-gallery img {
    max-height: 480px;
  }
}

.photoframe-section p.photoframe-caption {
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-caption);
  color: var(--text-muted);
  text-align: center;
  margin-top: var(--space-md);
  line-height: var(--lh-normal);
  letter-spacing: 0.05em;
  max-width: none;
}

/* ====== Section 4-6: 屋外AR ====== */

.ar-features {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
  margin-top: var(--space-lg);
}

.ar-feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: center;
}

.ar-feature.reverse {
  direction: rtl;
}

.ar-feature.reverse > * {
  direction: ltr;
}

@media (max-width: 768px) {
  .ar-feature,
  .ar-feature.reverse {
    grid-template-columns: 1fr;
    direction: ltr;
  }
}

.ar-image {
  position: relative;
}

.ar-image img {
  width: 100%;
}

.ar-image .image-placeholder {
  width: 100%;
  aspect-ratio: 16 / 10;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-deep) 100%);
  color: var(--text-muted);
  font-family: var(--font-jp-gothic);
  font-size: var(--fs-caption);
  letter-spacing: 0.2em;
  border: 1px dashed rgba(212, 165, 116, 0.2);
  text-align: center;
  padding: var(--space-md);
}

.ar-feature h4 {
  font-family: var(--font-jp-mincho);
  font-size: 24px;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
}

.ar-feature p {
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-body);
  line-height: var(--lh-loose);
  color: var(--text-secondary);
}

.ar-feature p + p {
  margin-top: var(--space-md);
}

/* 言語切替デモ(画像オーバーレイ) */

.language-demo {
  position: relative;
}

.language-demo-overlay {
  position: absolute;
  bottom: 16px;
  left: 16px;
  right: 16px;
  padding: var(--space-sm) var(--space-md);
  background: rgba(10, 10, 10, 0.75);
  border: 1px solid var(--accent-gold-dim);
  font-family: var(--font-en-mono);
  color: var(--accent-gold);
  font-size: var(--fs-caption);
  pointer-events: none;
}

.language-demo-overlay .lang-label {
  display: block;
  font-size: var(--fs-hud-small);
  letter-spacing: 0.3em;
  color: var(--accent-gold-dim);
  margin-bottom: 4px;
  text-transform: uppercase;
}

.language-demo-overlay .lang-text {
  display: block;
  color: var(--text-primary);
  letter-spacing: 0.04em;
  line-height: 1.5;
}

/* ====== Section 4-7: お披露目の告知 ====== */

.section-closing {
  position: relative;
  text-align: center;
  overflow: hidden;
  background: var(--bg-primary);
}

.closing-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.closing-bg img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.75;
}

/* グラデーションオーバーレイ:画像を前面に出しつつ、テキストの読みやすさを保つ */
.section-closing::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    to bottom,
    rgba(10, 10, 10, 0.7) 0%,
    rgba(10, 10, 10, 0.3) 50%,
    rgba(10, 10, 10, 0.7) 100%
  );
  pointer-events: none;
}

.section-closing .container {
  position: relative;
  z-index: 2;
}

.closing-body {
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-body-large);
  line-height: var(--lh-loose);
  color: var(--text-secondary);
  max-width: 640px;
  margin: 0 auto;
}

.closing-body + .closing-body {
  margin-top: var(--space-md);
}

.closing-date {
  font-family: var(--font-en-serif);
  font-style: italic;
  color: var(--accent-warm);
  letter-spacing: 0.05em;
}

/* ====== Footer ====== */

.site-footer {
  background: var(--bg-deep);
  padding: var(--space-lg) var(--space-md);
  text-align: center;
  border-top: 1px solid rgba(212, 165, 116, 0.1);
}

.related-pages {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  margin-bottom: var(--space-md);
  font-family: var(--font-jp-gothic);
  font-size: var(--fs-caption);
  letter-spacing: 0.1em;
  flex-wrap: wrap;
}

.related-pages a {
  color: var(--text-secondary);
  transition: color var(--duration-fast) var(--ease-quietly);
}

.related-pages a:hover {
  color: var(--accent-warm);
}

.copyright {
  font-family: var(--font-en-serif);
  font-size: var(--fs-caption);
  color: var(--text-muted);
  letter-spacing: 0.2em;
}

/* ====== Common: image placeholder ====== */

.image-placeholder {
  aspect-ratio: 16 / 10;
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-deep) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-family: var(--font-jp-gothic);
  font-size: var(--fs-caption);
  letter-spacing: 0.2em;
  border: 1px dashed rgba(212, 165, 116, 0.2);
  text-align: center;
  padding: var(--space-md);
  width: 100%;
}

.image-placeholder.portrait {
  aspect-ratio: 3 / 4;
}

/* ===========================================================
   Phase 2: 見栄え強化(HUD レスポンシブ、視覚的精度の向上)
   =========================================================== */

/* HUD レスポンシブ:狭い画面では HUD を縮小 / 隠す */

@media (max-width: 1024px) {
  .hud { font-size: 0.65rem; }
  .hud-tl { top: 78px; }
}

@media (max-width: 768px) {
  .hud-block { display: none; }
  .hud-corner { width: 22px; height: 22px; }
}

/* セクション境界の細い装飾線(節目を作る) ─ 結びセクションには適用しない */

.section + .section {
  position: relative;
}

.section + .section:not(.section-closing)::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 1px;
  height: 60px;
  background: linear-gradient(180deg, transparent 0%, var(--accent-gold-dim) 100%);
  opacity: 0.4;
}

/* セクションヘッダーの番号(任意の sub label) */

.section-eyebrow::before {
  content: '— ';
  letter-spacing: 0;
  margin-right: 4px;
  color: var(--accent-warm);
}

.section-eyebrow::after {
  content: ' —';
  letter-spacing: 0;
  margin-left: 4px;
  color: var(--accent-warm);
}

/* ヒーロータイトル微調整 */

.hero-title {
  text-shadow: 0 2px 20px rgba(0, 0, 0, 0.4);
}

.hero-subtitle {
  text-shadow: 0 1px 12px rgba(0, 0, 0, 0.5);
}

/* 4作品カード:細部の調整 */

.work-card {
  border-radius: 4px;
  position: relative;
  cursor: pointer;
}

.work-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border: 1px solid transparent;
  pointer-events: none;
  transition: border-color var(--duration-normal) var(--ease-quietly);
  border-radius: 4px;
}

.work-card:hover::after {
  border-color: rgba(212, 165, 116, 0.3);
}

.work-info {
  position: relative;
}

.work-info::before {
  content: '';
  position: absolute;
  top: 0;
  left: var(--space-md);
  width: 24px;
  height: 1px;
  background: var(--accent-warm);
}

/* 五感カードの細部 */

.sense-card {
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid rgba(212, 165, 116, 0.08);
  transition: border-color var(--duration-normal) var(--ease-quietly),
              transform var(--duration-normal) var(--ease-quietly);
}

.sense-card:hover {
  border-color: rgba(212, 165, 116, 0.25);
  transform: translateY(-2px);
}

.sense-info::before {
  content: '';
  display: block;
  width: 32px;
  height: 1px;
  background: var(--accent-warm);
  margin-bottom: var(--space-sm);
}

/* Phone mock の縦アスペクト */

.phone-mock {
  aspect-ratio: 9 / 16;
  background: var(--bg-secondary);
}

.phone-mock img {
  height: 100%;
  object-fit: cover;
}

/* 衣装ペアの細部 */

.costume-figure {
  border-radius: 4px;
  overflow: hidden;
  background: var(--bg-deep);
}

.costume-figure img {
  border-radius: 0;
}

.costume-figure.costume-after {
  position: relative;
}

.costume-after .variant-image:first-of-type {
  border-radius: 4px;
}

.variant-selector {
  position: absolute;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(10, 10, 10, 0.7);
  padding: 8px 12px;
  border: 1px solid rgba(212, 165, 116, 0.25);
  z-index: 5;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.variant-button {
  font-size: var(--fs-caption);
  padding: 6px 14px;
  letter-spacing: 0.05em;
  cursor: pointer;
}

/* 写真フレーム:仕立てを精緻に */

.photoframe-gallery img {
  border-radius: 6px;
  transition: transform var(--duration-normal) var(--ease-quietly);
}

.photoframe-gallery img:hover {
  transform: scale(1.02);
}

/* 屋外 AR features の細部 */

.ar-feature {
  background: var(--bg-secondary);
  padding: var(--space-md);
  border-radius: 4px;
  border: 1px solid rgba(212, 165, 116, 0.05);
}

.ar-feature .ar-image img {
  border-radius: 4px;
}

.ar-feature h4::before {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--accent-warm);
  margin-bottom: var(--space-sm);
}

/* 結びセクションの date 強調 */

.closing-date {
  font-size: 1.4em;
  display: inline;
}

/* スクロールバーの控えめ化(任意) */

::-webkit-scrollbar {
  width: 8px;
  background: var(--bg-deep);
}

::-webkit-scrollbar-thumb {
  background: rgba(212, 165, 116, 0.2);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(212, 165, 116, 0.4);
}

/* セレクション色 */

::selection {
  background: var(--accent-warm);
  color: var(--bg-primary);
}

/* キーボードフォーカス可視化(マウスクリック時には出さない) */

:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--accent-warm);
  outline-offset: 4px;
  border-radius: 2px;
}

.variant-button:focus-visible,
.related-pages a:focus-visible,
.site-header .logo:focus-visible {
  outline: 2px solid var(--accent-warm);
  outline-offset: 4px;
}

/* スキップリンク(キーボードユーザー向け) */

.skip-to-content {
  position: absolute;
  top: -100px;
  left: 0;
  background: var(--bg-primary);
  color: var(--accent-warm);
  padding: var(--space-sm) var(--space-md);
  font-family: var(--font-jp-gothic);
  font-size: var(--fs-caption);
  letter-spacing: 0.1em;
  z-index: 200;
  transition: top var(--duration-fast) var(--ease-quietly);
  border: 1px solid var(--accent-warm);
}

.skip-to-content:focus {
  top: 16px;
  left: 16px;
}

/* レスポンシブ追加調整 */

@media (max-width: 768px) {
  .work-info::before {
    left: var(--space-sm);
  }

  .ar-feature {
    padding: var(--space-sm);
  }

  .indoor-ar {
    margin-top: var(--space-lg);
  }

  .photoframe-gallery {
    gap: var(--space-sm);
  }

  .scroll-indicator {
    bottom: var(--space-md);
  }
}

@media (max-width: 430px) {
  .site-header {
    top: 16px;
    left: 16px;
  }

  .site-header .logo {
    font-size: 1.1rem;
  }

  .work-info,
  .sense-info {
    padding: var(--space-sm);
  }

  .work-title,
  .sense-title {
    font-size: 18px;
  }

  .photoframe-gallery {
    grid-template-columns: 1fr;
  }
}

/* ===========================================================
   Phase 5 第 2 波 追加スタイル
   =========================================================== */

/* ====== 修正 3: シアタールーム仕組み図(視覚カード内) ====== */

.theater-diagram {
  margin-top: var(--space-md);
  text-align: center;
}

.theater-diagram img {
  max-width: 100%;
  height: auto;
  border-radius: 4px;
  border: 1px solid rgba(212, 165, 116, 0.1);
}

.theater-diagram figcaption {
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-caption);
  color: var(--text-muted);
  margin-top: var(--space-sm);
  font-style: italic;
}

/* ====== 修正 4: ヒーロー音符ボタン + 修正 5: ウローカー音声トグル(共通) ====== */

.audio-toggle {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: rgba(0, 0, 0, 0.4);
  border: 1px solid var(--accent-gold-dim);
  color: var(--text-secondary);
  padding: 10px 18px;
  border-radius: 32px;
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-caption);
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: background var(--duration-normal) var(--ease-quietly),
              border-color var(--duration-normal) var(--ease-quietly),
              color var(--duration-normal) var(--ease-quietly);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

.audio-toggle:hover {
  background: rgba(0, 0, 0, 0.6);
  border-color: var(--accent-gold);
  color: var(--text-primary);
}

.audio-toggle[aria-pressed="true"] {
  background: rgba(212, 165, 116, 0.18);
  border-color: var(--accent-warm);
  color: var(--accent-warm);
}

.audio-toggle .audio-icon {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.audio-toggle[aria-pressed="true"] .audio-icon svg {
  animation: pulseGentle 2s ease-in-out infinite;
}

.audio-toggle:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

@keyframes pulseGentle {
  0%, 100% { opacity: 0.6; }
  50% { opacity: 1; }
}

@keyframes fadeInDelayed {
  to { opacity: 1; }
}

/* ヒーロー音符ボタン:右下のフロート位置 */

.hero #hero-audio-toggle {
  position: absolute;
  bottom: 100px;
  right: 24px;
  z-index: 5;
  opacity: 0;
  animation: fadeInDelayed 1.5s var(--ease-quietly) 2.5s forwards;
}

@media (max-width: 768px) {
  .hero #hero-audio-toggle {
    bottom: 80px;
    right: 16px;
    padding: 8px 14px;
    font-size: 12px;
  }
}

@media (max-width: 430px) {
  .hero #hero-audio-toggle {
    bottom: 70px;
    right: 12px;
    padding: 6px 12px;
    font-size: 11px;
  }
  .hero #hero-audio-toggle .audio-icon svg {
    width: 18px;
    height: 18px;
  }
}

/* インライン版(ウローカーなど、カードの中で使う) */

.audio-toggle-inline {
  position: relative;
  margin-top: var(--space-md);
  width: auto;
}

/* ====== 修正 5: ウローカーカード ====== */

.sense-card-urouka .urouka-video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.sense-card-urouka .sense-media {
  background: var(--bg-deep);
}

/* ====== 修正 6: 屋外AR末尾のスマホ動画 ====== */

.ar-mobile-demo {
  margin-top: var(--space-xl);
  text-align: center;
}

.ar-mobile-title {
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-subsection);
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  line-height: var(--lh-tight);
}

.ar-mobile-lead {
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-body);
  color: var(--text-secondary);
  line-height: var(--lh-loose);
  margin-bottom: var(--space-lg);
}

.ar-mobile-video-wrap {
  max-width: 800px;
  margin: 0 auto;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  background: var(--bg-deep);
}

.ar-mobile-video {
  width: 100%;
  height: auto;
  display: block;
}

/* ====== 修正 7: 地図セクション「斎場御嶽を、目で歩く」 ====== */

.section-map {
  position: relative;
  background: var(--bg-primary);
}

.map-container {
  position: relative;
  max-width: 1000px;
  margin: var(--space-lg) auto 0;
  aspect-ratio: 4 / 3;
  background: var(--bg-deep);
  border-radius: 4px;
  overflow: hidden;
}

.map-image {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
  position: relative;
  z-index: 1;
}

.map-hotspot {
  position: absolute;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(212, 165, 116, 0.6);
  border: 2px solid var(--accent-warm);
  cursor: pointer;
  transform: translate(-50%, -50%);
  transition: background var(--duration-normal) var(--ease-quietly),
              transform var(--duration-normal) var(--ease-quietly);
  animation: hotspotPulse 2.5s ease-in-out infinite;
  z-index: 2;
  padding: 0;
}

.map-hotspot:hover,
.map-hotspot:focus-visible {
  background: var(--accent-warm);
  transform: translate(-50%, -50%) scale(1.2);
  outline: none;
}

@keyframes hotspotPulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(212, 165, 116, 0.6);
  }
  50% {
    box-shadow: 0 0 0 12px rgba(212, 165, 116, 0);
  }
}

@media (max-width: 640px) {
  .map-hotspot {
    width: 24px;
    height: 24px;
  }
}

/* サイドパネル(各拝所の詳細) */

.haisho-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: min(480px, 90vw);
  height: 100vh;
  background: var(--bg-secondary);
  border-left: 1px solid var(--accent-gold-dim);
  transform: translateX(100%);
  transition: transform var(--duration-slow) var(--ease-quietly);
  z-index: 150;
  overflow-y: auto;
  padding: var(--space-lg);
  visibility: hidden;
}

.haisho-panel.is-open {
  transform: translateX(0);
  visibility: visible;
}

.haisho-panel-close {
  position: absolute;
  top: 16px;
  right: 16px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: 1px solid var(--text-muted);
  color: var(--text-primary);
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
  border-radius: 50%;
  transition: border-color var(--duration-fast) var(--ease-quietly);
}

.haisho-panel-close:hover {
  border-color: var(--accent-warm);
  color: var(--accent-warm);
}

.haisho-panel-image {
  width: 100%;
  height: auto;
  border-radius: 4px;
  margin-bottom: var(--space-md);
  margin-top: var(--space-lg);
}

.haisho-panel-name-en {
  font-family: var(--font-en-serif);
  font-size: var(--fs-caption);
  letter-spacing: 0.25em;
  color: var(--accent-warm);
  margin-bottom: 4px;
  text-transform: uppercase;
}

.haisho-panel-name-jp {
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-subsection);
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  line-height: var(--lh-tight);
}

.haisho-panel-description {
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-body);
  color: var(--text-secondary);
  line-height: var(--lh-loose);
  margin-bottom: var(--space-md);
}

.haisho-panel-vr-button {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-md);
  padding: 12px 24px;
  background: rgba(212, 165, 116, 0.1);
  border: 1px solid var(--accent-warm);
  color: var(--accent-warm);
  border-radius: 4px;
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-body);
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: background var(--duration-normal) var(--ease-quietly);
}

.haisho-panel-vr-button:hover {
  background: rgba(212, 165, 116, 0.25);
}

/* VR ビューアモーダル */

.vr-viewer-modal {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.95);
  z-index: 200;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
}

.vr-viewer-modal.is-open {
  display: flex;
}

.vr-viewer-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  background: transparent;
  border: 1px solid white;
  color: white;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  border-radius: 50%;
  transition: border-color var(--duration-fast) var(--ease-quietly);
  z-index: 1;
}

.vr-viewer-close:hover {
  border-color: var(--accent-warm);
  color: var(--accent-warm);
}

.vr-viewer-container {
  width: min(900px, 92vw);
  aspect-ratio: 16 / 9;
  background: black;
  border-radius: 8px;
  overflow: hidden;
}

.vr-viewer-note {
  margin-top: var(--space-md);
  color: var(--text-muted);
  font-size: var(--fs-caption);
  text-align: center;
  font-family: var(--font-jp-mincho);
}

/* ===========================================================
   Phase 5 第 2 波 追加修正(補足 #5)
   =========================================================== */

/* ====== 修正 2: 横向きスマホモック(室内 AR メニュー) ====== */

.phone-mock-landscape {
  aspect-ratio: 16 / 9;
  max-width: 100%;
  width: 100%;
  border-radius: 28px;
  border: 8px solid #1a1a1a;
  background: #000;
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  margin: 0 auto;
  position: relative;
  /* 親 .phone-mock の縦アスペクトを上書き */
}

/* 室内 AR ブロックは横向きスマホで大きくなったため、縦並びに変更 */
.indoor-ar:has(.phone-mock-landscape) {
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  text-align: center;
}

.indoor-ar:has(.phone-mock-landscape) .indoor-ar-text {
  max-width: 720px;
  margin: 0 auto;
}

.phone-mock-landscape img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* ====== 修正 3: 屋外 AR 360度マップ誘導テキスト ====== */

.ar-feature-map-guide {
  /* image-placeholder を持たないので、テキストだけが幅いっぱいに広がる */
  grid-template-columns: 1fr;
}

.ar-feature-link {
  margin-top: var(--space-md);
  padding: 12px 16px;
  background: rgba(212, 165, 116, 0.05);
  border-left: 2px solid var(--accent-warm);
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-caption);
  color: var(--accent-warm);
  font-style: italic;
  letter-spacing: 0.05em;
}

.ar-feature-link .arrow {
  display: inline-block;
  margin-right: 6px;
  font-style: normal;
}

/* ====== 修正 4: 祈りの音楽トグル(地図セクション上部) ====== */

.prayer-music-control {
  text-align: center;
  margin: 0 auto var(--space-lg);
  max-width: 540px;
}

.audio-toggle-prayer {
  position: relative;
  background: rgba(212, 165, 116, 0.05);
  border: 1px solid var(--accent-gold-dim);
  padding: 12px 24px;
  border-radius: 32px;
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-caption);
  color: var(--text-secondary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  transition: background var(--duration-normal) var(--ease-quietly),
              border-color var(--duration-normal) var(--ease-quietly),
              color var(--duration-normal) var(--ease-quietly);
  opacity: 1;
  animation: none;
  letter-spacing: 0.05em;
}

.audio-toggle-prayer:hover {
  background: rgba(212, 165, 116, 0.1);
  border-color: var(--accent-warm);
  color: var(--text-primary);
}

.audio-toggle-prayer[aria-pressed="true"] {
  background: rgba(212, 165, 116, 0.18);
  border-color: var(--accent-warm);
  color: var(--accent-warm);
}

.audio-toggle-prayer[aria-pressed="true"] .audio-icon svg {
  animation: pulseGentle 2s ease-in-out infinite;
}

/* ====== 修正 6: 「御嶽の中に立つ」セクション ====== */

.section-vr-stand {
  background: var(--bg-primary);
  position: relative;
}

.vr-stand-container {
  max-width: 1100px;
  margin: var(--space-lg) auto 0;
}

.vr-stand-panorama {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #000;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 12px 48px rgba(0, 0, 0, 0.6);
}

.vr-stand-note {
  margin-top: var(--space-md);
  font-family: var(--font-jp-mincho);
  font-size: var(--fs-caption);
  color: var(--text-muted);
  text-align: center;
}

@media (max-width: 640px) {
  .vr-stand-panorama {
    aspect-ratio: 4 / 3;
  }
}

/* ====== 修正 3: 屋外 AR メインを動画に差し替え ====== */

.ar-priestesses-video,
.ar-ritual-spot-video {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
  border-radius: 4px;
}

/* ====== 修正 4: スマホ動画 HUD タグ ====== */

.ar-mobile-video-wrap {
  position: relative;
}

.ar-hud {
  position: absolute;
  font-family: var(--font-en-mono);
  color: var(--accent-gold);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  opacity: 0;
  transition: opacity 1.5s var(--ease-quietly);
  pointer-events: none;
  z-index: 5;
}

.ar-hud.is-shown {
  opacity: 1;
}

.ar-hud-label {
  display: block;
  color: var(--accent-warm);
  font-size: 0.6rem;
  margin-bottom: 6px;
  letter-spacing: 0.3em;
}

.ar-hud-text {
  display: block;
  font-family: var(--font-jp-mincho);
  font-size: 0.95rem;
  color: var(--text-secondary);
  letter-spacing: 0.1em;
  line-height: 1.6;
}

.ar-hud-now {
  top: 24px;
  left: 24px;
}

.ar-hud-then {
  top: 24px;
  right: 24px;
  text-align: right;
}

.ar-hud-bottom {
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
}

.ar-hud-bottom .ar-hud-text {
  font-style: italic;
  color: var(--text-primary);
  font-size: 1.05rem;
}

/* 角フレーム装飾(kudaka 踏襲) */
.ar-hud-now::before,
.ar-hud-then::before {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border: 1px solid var(--accent-gold-dim);
}

.ar-hud-now::before {
  top: -10px;
  left: -10px;
  border-right: none;
  border-bottom: none;
}

.ar-hud-then::before {
  top: -10px;
  right: -10px;
  border-left: none;
  border-bottom: none;
}

@media (max-width: 640px) {
  .ar-hud {
    font-size: 0.6rem;
  }
  .ar-hud-text {
    font-size: 0.8rem;
  }
  .ar-hud-bottom .ar-hud-text {
    font-size: 0.85rem;
  }
  .ar-hud-now {
    top: 12px;
    left: 12px;
  }
  .ar-hud-then {
    top: 12px;
    right: 12px;
  }
  .ar-hud-bottom {
    bottom: 12px;
  }
}