/* ヘッダーと主要ナビゲーション */
.primary-nav__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.animated-underline {
  position: relative;
}

.animated-underline::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--motion-base);
}

.animated-underline[href]:hover::after,
.animated-underline[href]:focus-visible::after {
  transform: scaleX(1);
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-height);
  color: var(--on-color);
  background: color-mix(in srgb, var(--primary-dark) 97%, transparent);
  border-bottom: 1px solid
    color-mix(in srgb, var(--on-color) 12%, transparent);
}

.site-header__inner {
  width: calc(100% - var(--page-padding) - var(--page-padding));
  max-width: var(--content-max-width);
  height: 100%;
  margin-inline: auto;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 20px;
}

.site-header__brand {
  margin: 0;
}

.site-header__home-link {
  width: fit-content;
  max-width: 100%;
  display: grid;
  gap: 0;
}

.site-header__tagline {
  display: block;
  color: color-mix(in srgb, var(--on-color) 94%, transparent);
  font-size: var(--font-size-header-tagline);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: 0;
  white-space: nowrap;
}

.site-header__logo {
  width: min(220px, 68vw);
  height: auto;
}

.site-header__business-info {
  display: none;
}

.primary-nav {
  display: none;
}

.primary-nav__list {
  display: flex;
  align-items: center;
  justify-content: end;
  gap: clamp(18px, 2vw, 32px);
}

.primary-nav__link {
  position: relative;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  padding: 0 0.5rem;
  font-size: var(--font-size-nav);
  font-weight: 700;
  white-space: nowrap;
}

.primary-nav__link,
.primary-nav__contact {
  flex-direction: column;
  justify-content: center;
  gap: 3px;
}

.primary-nav__label {
  line-height: 1.2;
}

.primary-nav__eyebrow {
  order: -1;
  color: color-mix(in srgb, currentColor 55%, transparent);
  font-size: var(--font-size-header-meta);
  font-weight: 500;
  line-height: 1;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.primary-nav__link::after {
  bottom: 0;
  height: 2px;
}

.primary-nav__link[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  background: var(--accent);
}

.primary-nav__contact {
  width: auto;
  min-height: 44px;
  padding: 0.625rem 1rem;
  font-size: var(--font-size-nav);
  white-space: nowrap;
}

a:focus-visible,
.mobile-menu__trigger:focus-visible {
  outline: var(--focus-ring);
  outline-offset: 4px;
}

/* モバイルメニュー */
.mobile-menu__list,
.mobile-menu__social-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.mobile-menu {
  position: relative;
  display: block;
}

.mobile-menu__trigger {
  --mobile-menu-trigger-size: 44px;

  width: var(--mobile-menu-trigger-size);
  height: var(--mobile-menu-trigger-size);
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  /* 2px bars + 6px gap keeps their centers 8px apart for even rasterization. */
  gap: 6px;
  padding: 0;
  cursor: pointer;
  color: inherit;
  background: transparent;
  border: 1px solid color-mix(in srgb, var(--on-color) 55%, transparent);
  border-radius: 50%;
  font: inherit;
}

.mobile-menu--enhanced .mobile-menu__trigger {
  display: flex;
}

.mobile-menu__line {
  width: 19px;
  height: 2px;
  display: block;
  background: var(--on-color);
  transition:
    opacity var(--motion-base),
    transform var(--motion-base);
}

.mobile-menu__trigger[aria-expanded="true"] .mobile-menu__line--first {
  transform: translateY(8px) rotate(45deg);
}

.mobile-menu__trigger[aria-expanded="true"] .mobile-menu__line--middle {
  opacity: 0;
}

.mobile-menu__trigger[aria-expanded="true"] .mobile-menu__line--last {
  transform: translateY(-8px) rotate(-45deg);
}

.mobile-menu__nav {
  position: fixed;
  top: var(--mobile-menu-top, var(--header-height));
  left: 0;
  right: 0;
  height: calc(100dvh - var(--mobile-menu-top, var(--header-height)));
  padding: 14px 20px 28px;
  overflow-y: auto;
  background: linear-gradient(135deg, var(--mobile-menu-gradient-start) 0%, var(--surface) 72%);
  border-top: 3px solid var(--accent);
  box-shadow: 0 18px 30px
    color-mix(in srgb, var(--primary-dark) 16%, transparent);
}

.mobile-menu__list {
  width: 100%;
  max-width: var(--content-max-width);
  display: grid;
  grid-template-columns: 1fr;
  margin-inline: auto;
}

.mobile-menu__link {
  min-height: 58px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 12px 14px 8px;
  border-bottom: 1px solid var(--mobile-menu-border);
  border-left: 3px solid transparent;
  color: var(--primary-dark);
  font-size: var(--font-size-base);
  font-weight: 700;
  letter-spacing: 0.04em;
  transition:
    background-color var(--motion-base),
    border-color var(--motion-base),
    padding-left var(--motion-base);
}

.mobile-menu__link::after {
  content: "";
  width: 8px;
  height: 8px;
  flex: 0 0 auto;
  margin-left: 16px;
  border-top: 2px solid var(--accent);
  border-right: 2px solid var(--accent);
  transform: rotate(45deg);
}

.mobile-menu__link[href]:hover,
.mobile-menu__link[href]:focus-visible {
  padding-left: 14px;
  background: color-mix(in srgb, var(--primary) 6%, transparent);
  border-left-color: var(--accent);
}

.mobile-menu__link[aria-current="page"] {
  padding-left: 14px;
  background: color-mix(in srgb, var(--primary) 6%, transparent);
  border-left-color: var(--accent);
}

.mobile-menu__link[aria-current="page"]::after {
  content: none;
}

.mobile-menu__social {
  width: 100%;
  max-width: var(--content-max-width);
  margin: 28px auto 0;
}

.mobile-menu__group-title {
  display: flex;
  align-items: center;
  gap: 0;
  margin: 0 0 8px;
  color: var(--primary-dark);
  font-size: var(--font-size-sm);
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: 0.08em;
  text-align: left;
}

.mobile-menu__group-title::before {
  content: "";
  width: 2px;
  height: 1em;
  flex: 0 0 auto;
  margin-right: 8px;
  background: var(--accent);
}

.mobile-menu__group-title::after {
  content: "";
  height: 1px;
  display: block;
  flex: 1 1 auto;
  margin-left: 12px;
  background: color-mix(in srgb, var(--primary) 20%, var(--line));
}

.mobile-menu__actions .mobile-menu__group-title {
  margin-bottom: 0;
}

.mobile-menu__actions {
  width: 100%;
  max-width: var(--content-max-width);
  display: grid;
  gap: 10px;
  margin: 28px auto 0;
}

.mobile-menu__action {
  max-width: none;
}

.mobile-menu__note {
  margin: -2px 0 2px;
  color: var(--muted);
  font-size: var(--font-size-xs);
  line-height: 1.5;
  text-align: center;
}

.mobile-menu__social-list {
  display: flex;
  justify-content: center;
  gap: 12px;
}

.mobile-menu__social-item {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
  color: var(--primary-dark);
  background: color-mix(in srgb, var(--primary) 4%, var(--surface));
  border: 1px solid var(--mobile-menu-border);
  border-radius: 50%;
}

.mobile-menu__social-item[href] {
  transition:
    background-color var(--motion-base),
    border-color var(--motion-base);
}

.mobile-menu__social-item[href]:hover,
.mobile-menu__social-item[href]:focus-visible {
  background: color-mix(in srgb, var(--primary) 6%, var(--surface));
  border-color: var(--accent);
}

.mobile-menu__social-icon {
  width: 26px;
  height: 26px;
  flex: 0 0 auto;
  object-fit: contain;
}

body.mobile-menu-open {
  overflow: hidden;
}

/* ヘッダーとモバイルメニューのレスポンシブ調整 */
@media (min-width: 768px) {
  .mobile-menu__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 32px;
  }
}

@media (min-width: 1024px) {
  .site-header__inner {
    grid-template-columns: 240px minmax(0, 1fr);
    gap: 18px;
  }

  .site-header__logo {
    width: min(100%, 275px);
  }

  .primary-nav {
    display: block;
  }

  .primary-nav__list {
    gap: 15px;
  }

  .mobile-menu {
    display: none;
  }
}

@media (min-width: 1200px) {
  .site-header__inner {
    grid-template-columns: minmax(220px, 300px) minmax(0, 1fr);
    gap: 28px;
  }

  .site-header--business-info .site-header__inner {
    grid-template-columns: minmax(220px, 280px) minmax(0, 1fr) auto;
    gap: clamp(16px, 1.6vw, 24px);
  }

  .primary-nav__list {
    gap: clamp(18px, 2vw, 32px);
  }

  .site-header--business-info .primary-nav__list {
    gap: clamp(14px, 1.3vw, 22px);
  }

  .site-header__business-info {
    min-width: 178px;
    display: grid;
    gap: 3px;
    justify-self: end;
    margin: 0;
    padding-left: clamp(16px, 1.6vw, 24px);
    border-left: 1px solid
      color-mix(in srgb, var(--on-color) 24%, transparent);
    white-space: nowrap;
  }

  .site-header__business-info-row {
    display: grid;
    grid-template-columns: 3.5rem auto;
    align-items: baseline;
    column-gap: 7px;
  }

  .site-header__business-info-row dt,
  .site-header__business-info-row dd {
    margin: 0;
  }

  .site-header__business-info-row dt {
    color: color-mix(in srgb, var(--on-color) 62%, transparent);
    font-size: var(--font-size-header-meta);
    font-weight: 600;
    line-height: 1.25;
    letter-spacing: 0.08em;
  }

  .site-header__business-info-row dd {
    color: color-mix(in srgb, var(--on-color) 82%, transparent);
    font-size: 0.6875rem;
    font-weight: 600;
    line-height: 1.25;
  }

  .site-header__business-info-row--phone dd {
    color: var(--on-color);
    font-size: var(--font-size-lg);
    font-weight: 700;
    line-height: 1;
    letter-spacing: 0.025em;
  }
}