/* ═══════════════════════════════════════════════════
   BUTTONS
═══════════════════════════════════════════════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.85em 2em;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  font-weight: 500;
  letter-spacing: 0.05em;
  line-height: 1;
  border-radius: var(--radius-full);
  border: 1.5px solid transparent;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), border-color var(--transition), transform var(--transition-fast), box-shadow var(--transition);
  white-space: nowrap;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

/* Primary */
.btn--primary {
  background: var(--c-primary);
  color: #fff;
  border-color: var(--c-primary);
}
.btn--primary:hover {
  background: var(--c-primary-dark);
  border-color: var(--c-primary-dark);
  box-shadow: var(--shadow-blue);
}

/* Outline dark */
.btn--outline {
  background: transparent;
  color: var(--c-text);
  border-color: var(--c-border);
}
.btn--outline:hover {
  background: var(--c-text);
  color: #fff;
  border-color: var(--c-text);
}

/* Outline white */
.btn--outline-white {
  background: transparent;
  color: #fff;
  border-color: rgba(255,255,255,.5);
}
.btn--outline-white:hover {
  background: #fff;
  color: var(--c-text);
  border-color: #fff;
}

/* Sizes */
.btn--sm  { padding: 0.6em 1.4em; font-size: var(--text-sm); }
.btn--lg  { padding: 1em 2.5em;   font-size: var(--text-md); }
.btn--xl  { padding: 1.1em 3em;   font-size: var(--text-lg); }

.btn__arrow {
  display: inline-block;
  transition: transform var(--transition);
}
.btn:hover .btn__arrow { transform: translateX(4px); }

/* ═══════════════════════════════════════════════════
   HEADER / NAV
═══════════════════════════════════════════════════ */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  height: var(--nav-h);
  transition: transform 0.4s var(--ease-out), background 0.4s var(--ease-out), box-shadow 0.4s var(--ease-out);
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: var(--space-8);
  height: 100%;
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-px);
}
.site-header.is-scrolled {
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--c-border);
}
.site-header.is-hidden { transform: translateY(-100%); }

/* ── WordPress管理バー（#wpadminbar）との位置ずれ補正 ── */
body.admin-bar .site-header { top: 32px; }
body.admin-bar .mobile-menu { top: 32px; }
@media screen and (max-width: 600px) {
  body.admin-bar .site-header { top: 46px; }
  body.admin-bar .mobile-menu { top: 46px; }
}

/* ── モバイル時にデスクトップナビを非表示（CSS初期状態ロック・FOUC防止） ── */
@media (max-width: 899px) {
  .site-nav { display: none; }
}

/* Logo */
.site-header__logo img {
  width: 100px;
  height: auto;
  /* 透明ヘッダー（ヒーロー上）では白く表示してロゴを確実に見せる */
  filter: brightness(0) invert(1);
  transition: filter var(--transition);
}
/* スクロール後は白背景になるのでフィルターを外してロゴ本来の色を表示 */
.site-header.is-scrolled .site-header__logo img {
  filter: none;
}

/* Desktop nav */
.site-nav { margin-left: auto; }
.site-nav__list {
  display: flex;
  align-items: center;
  gap: clamp(1rem, 2.5vw, 2.5rem);
}
.site-nav__list li { list-style: none; }
.site-nav__link {
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--c-text-white);
  letter-spacing: 0.04em;
  transition: color var(--transition-fast);
  position: relative;
  padding-bottom: 2px;
}
.site-header.is-scrolled .site-nav__link { color: var(--c-text); }
.site-nav__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background: var(--c-primary);
  transition: width var(--transition);
}
.site-nav__link:hover::after,
.site-nav__link.is-active::after { width: 100%; }
.site-nav__link:hover { color: var(--c-primary); }

/* Header CTA */
.site-header__cta {
  flex-shrink: 0;
  display: none;
}
.site-header.is-scrolled .site-header__cta { display: inline-flex; }
@media (min-width: 900px) { .site-header__cta { display: inline-flex; } }

/* Hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 6px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
  flex-shrink: 0;
  margin-left: auto;
}
@media (min-width: 900px) { .hamburger { display: none; } }
.hamburger__line {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--c-text-white);
  border-radius: 2px;
  transform-origin: center;
  transition: transform 0.3s var(--ease-out), opacity 0.3s var(--ease-out), background 0.3s;
}
.site-header.is-scrolled .hamburger__line { background: var(--c-text); }
.hamburger.is-open .hamburger__line:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.is-open .hamburger__line:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.is-open .hamburger__line:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* Menu overlay */
.menu-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: calc(var(--z-nav) - 1);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s;
}
.menu-overlay.is-visible { opacity: 1; pointer-events: auto; }

/* Mobile menu */
.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(340px, 85vw);
  background: var(--c-bg);
  z-index: var(--z-nav);
  transform: translateX(100%);
  transition: transform 0.4s var(--ease-out);
  overflow-y: auto;
  box-shadow: -4px 0 30px rgba(0,0,0,.15);
}
.mobile-menu.is-open { transform: translateX(0); }
.mobile-menu__inner {
  padding: var(--space-8) var(--space-8);
  display: flex;
  flex-direction: column;
  min-height: 100%;
  gap: var(--space-8);
}
.mobile-menu__logo img { width: 90px; }
.mobile-nav { display: flex; flex-direction: column; }
.mobile-nav__item { border-bottom: 1px solid var(--c-border); }
.mobile-nav__link {
  display: block;
  padding: var(--space-5) 0;
  font-size: var(--text-md);
  font-weight: 500;
  color: var(--c-text);
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}
.mobile-nav__link:hover { color: var(--c-primary); padding-left: var(--space-2); }
.mobile-menu__cta { text-align: center; width: 100%; }
.mobile-menu__info {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  padding-top: var(--space-6);
  border-top: 1px solid var(--c-border);
}
.mobile-menu__tel,
.mobile-menu__email { font-size: var(--text-sm); color: var(--c-text-sub); transition: color var(--transition-fast); }
.mobile-menu__tel:hover,
.mobile-menu__email:hover { color: var(--c-primary); }

/* ═══════════════════════════════════════════════════
   CARDS
═══════════════════════════════════════════════════ */
/* Blog card */
.blog-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
  gap: clamp(1.5rem, 3vw, 2.5rem);
}
.blog-card { border-radius: var(--radius-md); overflow: hidden; background: var(--c-bg); box-shadow: var(--shadow-sm); transition: box-shadow var(--transition), transform var(--transition); }
.blog-card:hover { box-shadow: var(--shadow-lg); transform: translateY(-4px); }
.blog-card__link { display: flex; flex-direction: column; height: 100%; }
.blog-card__thumb { overflow: hidden; aspect-ratio: 3/2; }
.blog-card__img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s var(--ease-out); }
.blog-card:hover .blog-card__img { transform: scale(1.05); }
.blog-card__body { padding: var(--space-6); display: flex; flex-direction: column; flex: 1; }
.blog-card__meta { display: flex; align-items: center; gap: var(--space-3); margin-bottom: var(--space-4); }
.blog-card__date { font-family: var(--font-en); font-size: var(--text-xs); color: var(--c-text-muted); letter-spacing: 0.05em; }
.blog-card__title { font-family: var(--font-sans); font-size: var(--text-lg); font-weight: 600; line-height: 1.5; color: var(--c-text); margin-bottom: var(--space-3); }
.blog-card__excerpt { font-size: var(--text-sm); color: var(--c-text-sub); line-height: 1.8; flex: 1; }

/* Tag */
.tag {
  display: inline-block;
  padding: 0.15em 0.7em;
  background: rgba(30, 141, 200, 0.1);
  color: var(--c-primary);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: 500;
  transition: background var(--transition-fast);
}
.tag:hover { background: var(--c-primary); color: #fff; }

/* ═══════════════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════════════ */
.site-footer { background: var(--c-dark); color: var(--c-text-white); }
.site-footer__top { padding-block: clamp(4rem, 8vw, 8rem); }
.site-footer__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(3rem, 6vw, 5rem);
}
@media (min-width: 900px) {
  .site-footer__grid {
    grid-template-columns: 1.5fr 1.5fr 1fr;
    align-items: start;
  }
}
.site-footer__logo img { filter: brightness(0) invert(1); width: 110px; margin-bottom: var(--space-5); }
.site-footer__tagline { font-family: var(--font-serif); font-size: var(--text-xl); font-weight: 700; margin-bottom: var(--space-4); }
.site-footer__desc { font-size: var(--text-sm); color: var(--c-text-white-sub); line-height: 1.9; max-width: 340px; margin-bottom: var(--space-6); }
.site-footer__contact { display: flex; flex-direction: column; gap: var(--space-2); }
.site-footer__tel,
.site-footer__email { font-size: var(--text-sm); color: var(--c-text-white-sub); transition: color var(--transition-fast); }
.site-footer__tel:hover,
.site-footer__email:hover { color: var(--c-primary-light); }

.site-footer__nav-wrap {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}
@media (max-width: 600px) { .site-footer__nav-wrap { grid-template-columns: 1fr; } }
.site-footer__nav-title {
  font-family: var(--font-en);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-text-white-muted);
  margin-bottom: var(--space-6);
}
.site-footer__nav-list { display: flex; flex-direction: column; gap: var(--space-3); }
.site-footer__nav-link { font-size: var(--text-sm); color: var(--c-text-white-sub); transition: color var(--transition-fast), padding-left var(--transition-fast); }
.site-footer__nav-link:hover { color: var(--c-text-white); padding-left: 4px; }
.site-footer__address {
  font-size: var(--text-sm);
  color: var(--c-text-white-sub);
  line-height: 2;
}
.site-footer__address strong { color: var(--c-text-white); }

.site-footer__cta-wrap {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: var(--space-5);
}
@media (min-width: 900px) { .site-footer__cta-wrap { align-items: flex-end; } }
.site-footer__cta-label { font-size: var(--text-sm); color: var(--c-text-white-sub); }
.site-footer__cta-btn { text-align: center; }

.site-footer__bottom {
  padding-block: var(--space-5);
  border-top: 1px solid var(--c-border-dark);
}
.site-footer__copy { font-size: var(--text-xs); color: var(--c-text-white-muted); }

/* ═══════════════════════════════════════════════════
   FORM
═══════════════════════════════════════════════════ */
.contact-form-wrap { max-width: 680px; margin-inline: auto; }
.wpcf7-form,
.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}
.form-group { display: flex; flex-direction: column; gap: var(--space-2); }
.form-group label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--c-text);
}
.form-group label .required {
  display: inline-block;
  margin-left: 0.4em;
  font-size: 0.75em;
  background: var(--c-primary);
  color: #fff;
  padding: 0.1em 0.5em;
  border-radius: var(--radius-full);
  vertical-align: middle;
}
.wpcf7-form input[type="text"],
.wpcf7-form input[type="email"],
.wpcf7-form input[type="tel"],
.wpcf7-form input[type="url"],
.wpcf7-form textarea,
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.85em 1.2em;
  border: 1.5px solid var(--c-border);
  border-radius: var(--radius);
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--c-text);
  background: var(--c-bg);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
  line-height: 1.6;
}
.wpcf7-form input:focus,
.wpcf7-form textarea:focus,
.contact-form input:focus,
.contact-form textarea:focus {
  border-color: var(--c-primary);
  box-shadow: 0 0 0 3px rgba(30,141,200,.15);
}
.wpcf7-form textarea,
.contact-form textarea { min-height: 160px; resize: vertical; }
.wpcf7-form input[type="submit"],
.contact-form button[type="submit"] {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 1em 3em;
  background: var(--c-primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-full);
  font-family: var(--font-sans);
  font-size: var(--text-md);
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition), transform var(--transition-fast), box-shadow var(--transition);
}
.wpcf7-form input[type="submit"]:hover,
.contact-form button[type="submit"]:hover {
  background: var(--c-primary-dark);
  box-shadow: var(--shadow-blue);
  transform: translateY(-2px);
}
.wpcf7-not-valid-tip { font-size: var(--text-xs); color: #e53e3e; margin-top: 0.25rem; }
.wpcf7-response-output { padding: 1rem; border-radius: var(--radius); font-size: var(--text-sm); margin-top: var(--space-4); }
.wpcf7 .wpcf7-response-output.wpcf7-mail-sent-ok { background: #f0fff4; border: 1px solid #48bb78; color: #276749; }
.wpcf7 .wpcf7-response-output.wpcf7-validation-errors { background: #fff5f5; border: 1px solid #fc8181; color: #c53030; }