/* ===== HEADER ===== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  height: 72px;
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.site-logo {
  display: flex;
  align-items: center;
}

.site-logo__img {
  height: 36px;
  width: auto;
}

.site-logo__text,
.site-logo__icon {
  display: none;
}

/* ===== NAVIGATION ===== */
.site-nav__list {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.site-nav__link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  transition: var(--transition);
  white-space: nowrap;
}

.site-nav__link:hover {
  opacity: 0.6;
}

.current-menu-item .site-nav__link,
.current_page_item .site-nav__link {
  font-weight: 700;
  border-bottom: 2px solid currentColor;
  padding-bottom: 2px;
}

.site-nav__link--cta {
  background: var(--color-black);
  color: var(--color-white) !important;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-md);
}

.site-nav__link--cta:hover {
  opacity: 0.8;
}

/* ===== MOBILE MENU TOGGLE ===== */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}

.mobile-menu-toggle__line {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== MOBILE MENU ===== */
.mobile-menu {
  display: none;
  position: fixed;
  top: 72px;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-white);
  z-index: 999;
  overflow-y: auto;
  padding: 2rem var(--container-pad);
}

.mobile-menu.is-open {
  display: block;
}

.mobile-menu__list {
  display: flex;
  flex-direction: column;
}

.mobile-menu__link {
  display: block;
  padding: 1.25rem 0;
  font-size: 1.25rem;
  font-weight: 600;
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition);
}

.mobile-menu__link:hover {
  padding-left: 0.5rem;
}

.mobile-menu__link--cta {
  margin-top: 1.5rem;
  display: inline-block;
  background: var(--color-black);
  color: var(--color-white);
  padding: 0.875rem 2rem;
  border-radius: var(--radius-md);
  text-align: center;
  border-bottom: none;
}

/* ===== SECTIONS ===== */
.section {
  padding: clamp(4rem, 8vw, 6rem) 0;
}

.section--wide {
  padding: clamp(5rem, 10vw, 8rem) 0;
}

.section-warm {
  background: var(--color-bg-warm);
}

.section-dark {
  background: var(--color-bg-dark);
  color: var(--color-white);
}

.section__header {
  margin-bottom: clamp(2rem, 4vw, 4rem);
}

.section__en {
  font-family: var(--font-en);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--color-text-sub);
  margin-bottom: 0.75rem;
  display: block;
}

.section__title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
}

.section__title--lg {
  font-size: clamp(2.5rem, 5vw, 4rem);
}

/* ===== GRIDS ===== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(1rem, 2vw, 1.5rem);
}

.cards-grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.cards-grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

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

@media (max-width: 1024px) {
  .cards-grid--3 { grid-template-columns: repeat(2, 1fr); }
  .cards-grid--4 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
  .cards-grid--2 { grid-template-columns: 1fr; }
  .cards-grid--3 { grid-template-columns: 1fr; }
  .cards-grid--4 { grid-template-columns: repeat(2, 1fr); }

  /* FIX-8: Product page mobile card spacing */
  .cards-grid {
    gap: 1rem;
  }
}

@media (max-width: 480px) {
  .cards-grid--4 { grid-template-columns: 1fr; }
}

/* ===== PHOTO CARDS ===== */
.photo-card {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  aspect-ratio: 4 / 5;
  cursor: pointer;
  display: block;
}

.photo-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.photo-card:hover img {
  transform: scale(1.05);
}

.photo-card__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.85) 0%, rgba(0, 0, 0, 0.2) 50%, rgba(0, 0, 0, 0) 100%);
}

.photo-card__body {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.5rem;
  color: var(--color-white);
}

.photo-card__label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  opacity: 0.8;
  margin-bottom: 0.5rem;
}

.photo-card__title {
  font-size: clamp(0.9rem, 1.5vw, 1.1rem);
  font-weight: 700;
  line-height: 1.4;
}

.photo-card__sub {
  font-size: 0.8rem;
  opacity: 0.75;
  margin-top: 0.5rem;
  line-height: 1.5;
}

/* ===== PORTFOLIO CARDS (delight-ventures style) ===== */
.portfolio-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  transition: var(--transition);
  display: block;
}

.portfolio-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.portfolio-card__logo {
  height: 40px;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
}

.portfolio-card__logo img {
  max-height: 40px;
  width: auto;
  object-fit: contain;
}

.portfolio-card__logo-placeholder {
  width: 40px;
  height: 40px;
  background: linear-gradient(135deg, #1a1a1a 0%, #333 100%);
  border-radius: var(--radius-md);
}

/* FIX-3: Card image area for products without thumbnail */
.portfolio-card__img-area {
  width: 100%;
  height: 140px;
  border-radius: var(--radius-md);
  overflow: hidden;
  margin-bottom: 1rem;
}

.portfolio-card__img-area img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.portfolio-card__img-area--placeholder {
  background: linear-gradient(135deg, #1a1a1a 0%, #2c2c2c 50%, #3a3a3a 100%);
}

.portfolio-card:nth-child(2) .portfolio-card__img-area--placeholder {
  background: linear-gradient(135deg, #0f1a2e 0%, #1e3a5f 100%);
}

.portfolio-card:nth-child(3) .portfolio-card__img-area--placeholder {
  background: linear-gradient(135deg, #1a0f2e 0%, #3d1f6b 100%);
}

.portfolio-card:nth-child(4) .portfolio-card__img-area--placeholder {
  background: linear-gradient(135deg, #0f2e1a 0%, #1f5c3d 100%);
}

/* FIX-8: Mobile card padding */
@media (max-width: 768px) {
  .portfolio-card {
    padding: 1.25rem;
  }
}

.portfolio-card__cat {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-sub);
  border: 1px solid var(--color-border);
  border-radius: 100px;
  padding: 0.15rem 0.6rem;
  display: inline-block;
  margin-bottom: 0.75rem;
}

.portfolio-card__title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.portfolio-card__desc {
  font-size: 0.8rem;
  color: var(--color-text-sub);
  line-height: 1.6;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
  min-height: 44px;
}

.btn-primary {
  background: var(--color-black);
  color: var(--color-white);
  border-color: var(--color-black);
}

.btn-primary:hover {
  opacity: 0.8;
}

.btn-outline {
  background: transparent;
  color: var(--color-black);
  border-color: var(--color-black);
}

.btn-outline:hover {
  background: var(--color-black);
  color: var(--color-white);
}

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

.btn-white:hover {
  opacity: 0.85;
}

/* ===== PAGINATION ===== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  margin-top: 3rem;
}

.pagination a,
.pagination span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  border: 1px solid var(--color-border);
  transition: var(--transition);
}

.pagination a:hover,
.pagination .current {
  background: var(--color-black);
  color: var(--color-white);
  border-color: var(--color-black);
}

/* ===== MAIN CONTENT OFFSET (fixed header対応) ===== */
.site-main {
  padding-top: 72px;
}

/* ===== BREADCRUMB ===== */
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  font-size: 0.8rem;
  color: var(--color-text-sub);
  margin-bottom: 2rem;
  position: relative;
  z-index: 1;
  background: rgba(255, 255, 255, 0.98);
}

.breadcrumb a:hover {
  color: var(--color-text);
}

.breadcrumb__sep {
  opacity: 0.4;
}

/* ===== FADE ANIMATIONS ===== */
/* GSAPが管理するため CSS animation は無効化 */
.fade-up {
  /* opacity/transform はGSAPが制御 */
}

.fade-up.is-visible {
  /* GSAPが is-visible クラスを使わないため空でOK */
}

/* ===== FOOTER ===== */
.site-footer {
  background: var(--color-bg-warm);
  border-top: 1px solid var(--color-border);
  padding: 4rem 0 2rem;
}

.site-footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.site-footer__logo img {
  height: 28px;
  width: auto;
  margin-bottom: 1rem;
}

.site-footer__tagline {
  font-size: 0.875rem;
  color: var(--color-text-sub);
  line-height: 1.7;
}

.site-footer__nav-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.site-footer__nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
}

.site-footer__nav-link {
  font-size: 0.875rem;
  color: var(--color-text-sub);
  transition: var(--transition);
  min-height: 44px;
  display: flex;
  align-items: center;
  margin-bottom: 0.75rem;
}

.site-footer__nav-link:hover {
  color: var(--color-text);
}

.site-footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  font-size: 0.75rem;
  color: var(--color-text-sub);
}

/* ===== MOBILE RESPONSIVE ===== */
@media (max-width: 768px) {
  .site-nav {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .site-footer__inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .site-footer__bottom {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}

/* ===== CONTENT WRAPPER ===== */
.content-wrapper {
  padding-top: 0;
}

/* ===== Mobile fixes ===== */
@media (max-width: 768px) {
  /* セクション余白を縮小 */
  .section {
    padding-top: 3rem;
    padding-bottom: 3rem;
  }

  /* ボタンのタップ領域確保 */
  .btn {
    min-height: 44px;
    width: 100%;
    max-width: 320px;
  }

  /* テーブル横スクロール対応 */
  .table-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  table {
    min-width: 540px;
  }

  /* case-card モバイル */
  .case-card__image {
    height: 180px;
  }
}

@media (max-width: 480px) {
  .case-card__image {
    height: 160px;
  }
}