/* ============================================================
   共通コンポーネント（全ページ）
   style.css の後に読み込む
   ============================================================ */

/* --- スクロールフェードイン --- */
.fade-in {
  opacity: 0;
  transition: opacity 0.28s ease;
}

.fade-in.is-visible {
  opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
  .fade-in {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* --- ボタン --- */
.btn {
  display: inline-block;
  padding: 0.9rem 2rem;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.04em;
  border-radius: 2px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition), color var(--transition);
}

.btn-primary {
  background: var(--color-orange);
  color: var(--color-black);
  border-color: var(--color-orange);
  box-shadow: var(--shadow-orange);
}

.btn-primary:hover {
  background: var(--color-white);
  border-color: var(--color-white);
  color: var(--color-black);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.6);
}

.btn-outline:hover {
  border-color: var(--color-orange);
  color: var(--color-orange);
  transform: translateY(-2px);
}

.btn-block {
  width: 100%;
  text-align: center;
}

.btn-more {
  min-width: 240px;
  letter-spacing: 0.06em;
}

.btn-more::after {
  content: " →";
  transition: transform var(--transition);
}

.btn-more:hover::after {
  transform: translateX(4px);
}

/* --- セクション見出し --- */
.section-header {
  margin-bottom: 3rem;
  max-width: 640px;
}

.section-label {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-orange);
  margin-bottom: 0.75rem;
}

.section-label::before {
  content: "// ";
  opacity: 0.6;
}

.section-title {
  margin: 0 0 1rem;
  font-size: clamp(1.85rem, 4vw, 2.5rem);
  font-weight: 900;
  color: var(--color-white);
  line-height: 1.25;
}

.section-desc {
  margin: 0;
  color: var(--color-gray);
  font-size: 0.98rem;
}

.section-header--light .section-title,
.section-header--light .section-desc {
  color: var(--color-white);
}

.section-more {
  margin-top: 2.5rem;
  padding-top: 2rem;
  text-align: center;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.section-more--dark {
  border-top-color: rgba(255, 107, 0, 0.2);
}

.section-more--light {
  border-top-color: rgba(0, 0, 0, 0.1);
}

.section-more--dark .btn-more {
  background: transparent;
  color: var(--color-orange);
  border: 2px solid var(--color-orange);
  box-shadow: none;
}

.section-more--dark .btn-more:hover {
  background: var(--color-orange);
  color: var(--color-black);
  border-color: var(--color-orange);
}

.section-more--light .btn-more {
  background: var(--color-black);
  color: var(--color-white);
  border: 2px solid var(--color-black);
  box-shadow: var(--shadow);
}

.section-more--light .btn-more:hover {
  background: var(--color-orange);
  border-color: var(--color-orange);
  color: var(--color-black);
}

/* --- ページヒーロー（サブページ共通）--- */
.page-hero {
  padding: calc(var(--header-height) + 2.5rem) 0 2.5rem;
  background: var(--color-black-soft);
  border-bottom: 3px solid var(--color-orange);
}

.page-hero--compact {
  padding-bottom: 2rem;
}

.page-hero--light {
  background: #f5f5f5;
  border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.page-hero--light .page-hero__title {
  color: var(--color-black);
}

.page-hero--light .page-hero__lead {
  color: var(--color-gray-dark);
}

.page-hero--light .section-label {
  color: var(--color-orange);
}

.page-hero__inner {
  max-width: 720px;
}

.page-hero__inner--center {
  margin-inline: auto;
  text-align: center;
}

.page-hero__title {
  margin: 0 0 1rem;
  font-size: clamp(1.85rem, 4vw, 2.75rem);
  font-weight: 900;
  color: var(--color-white);
  line-height: 1.2;
}

.page-hero__lead {
  margin: 0;
  color: var(--color-gray);
  line-height: 1.85;
  font-size: clamp(1rem, 2.2vw, 1.1rem);
}

.page-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-top: 2rem;
}

/* --- コンテンツセクション --- */
.content-section {
  padding: 5rem 0;
}

.content-section--white {
  background: var(--color-white);
  color: var(--color-black);
}

.content-section--white .section-title {
  color: var(--color-black);
}

.content-section--white .section-desc {
  color: var(--color-gray-dark);
}

.content-section--dark {
  background: var(--color-black);
}

.content-section--soft {
  background: var(--color-black-soft);
}

.content-section--compact {
  padding: 2.5rem 0;
}

/* --- CTA --- */
.page-cta {
  background: var(--color-black-soft);
  border-top: 1px solid rgba(255, 107, 0, 0.25);
  padding: 4rem 0;
}

.page-cta__inner {
  text-align: center;
  max-width: 640px;
  margin: 0 auto;
}

.page-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  justify-content: center;
  margin-top: 1.5rem;
}

@media (max-width: 767px) {
  .page-cta__actions {
    flex-direction: column;
  }

  .page-cta__actions .btn {
    width: 100%;
    text-align: center;
  }

  .content-section {
    padding: 3.5rem 0;
  }
}

/* --- ギャラリーグリッド --- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.gallery-item {
  margin: 0;
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  overflow: hidden;
}

.gallery-item--wide {
  grid-column: span 2;
  aspect-ratio: 21 / 9;
}

.gallery-item .img-hover-overlay {
  pointer-events: none;
}

/* --- 画像ホバー --- */
.img-hover {
  position: relative;
  overflow: hidden;
  cursor: pointer;
}

.img-hover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.img-hover-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: linear-gradient(
    to top,
    rgba(10, 10, 10, 0.92) 0%,
    rgba(255, 107, 0, 0.35) 100%
  );
  opacity: 0;
  transition: opacity var(--transition);
  text-align: center;
  padding: 1rem;
}

.img-hover-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--color-orange);
  color: var(--color-black);
  font-family: var(--font-display);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transform: translateY(12px);
  transition: transform var(--transition);
}

.img-hover-overlay p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--color-white);
  transform: translateY(12px);
  transition: transform var(--transition);
}

.img-hover:hover .img-hover-overlay {
  opacity: 1;
}

.img-hover:hover .img-hover-tag,
.img-hover:hover .img-hover-overlay p {
  transform: translateY(0);
}

/* --- サブページレイアウト --- */
body.subpage {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

body.subpage .site-header {
  background: rgba(10, 10, 10, 0.98);
  box-shadow: 0 1px 0 rgba(255, 107, 0, 0.25);
}

body.subpage main {
  flex: 1;
}

.site-nav a.is-current {
  color: var(--color-orange);
}

.site-nav a.is-current::after {
  width: 100%;
}

@media (max-width: 767px) {
  .gallery-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .gallery-item--wide {
    grid-column: span 2;
  }
}

@media (max-width: 480px) {
  .gallery-grid {
    grid-template-columns: 1fr;
  }

  .gallery-item--wide {
    grid-column: span 1;
  }
}