/* ============================================================
   ITSN /contact/ — contact-specific styles
   - Self-contained (contact-* prefix) to avoid clashes with
     www style.css / page.css which the page also loads for
     header / footer.
   - Tone matches www corporate look; form tone adapted from
     service.itsn.co.jp.
   ============================================================ */

.contact-main {
  --c-bg:        #ffffff;
  --c-bg-soft:   #f5f7f9;
  --c-border:    #d8dee4;
  --c-text:      #1a1f29;
  --c-text-sub:  #5b6573;
  --c-accent:    #0e7ab8;
  --c-accent-dk: #0a5a89;
  --c-danger:    #c0341a;
  --c-radius:    8px;
  --c-gap:       clamp(1rem, 2.5vw, 2rem);
  --c-section-y: clamp(2.5rem, 6vw, 5rem);
  --c-maxw:      1080px;
  font-family: "Noto Sans JP", "Hiragino Kaku Gothic ProN", "Yu Gothic", sans-serif;
  color: var(--c-text);
  line-height: 1.8;
}

.contact-inner {
  max-width: var(--c-maxw);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 4vw, 2.5rem);
}

.contact-section {
  padding-block: var(--c-section-y);
  border-top: 1px solid var(--c-border);
}
.contact-section:first-of-type { border-top: 0; }
.contact-section--soft { background: var(--c-bg-soft); }

.contact-section__title {
  font-size: clamp(1.3rem, 2.6vw, 1.75rem);
  font-weight: 700;
  margin-bottom: 1.25rem;
  letter-spacing: 0.02em;
}
.contact-section__lead {
  color: var(--c-text-sub);
  margin-bottom: 1.75rem;
  max-width: 64ch;
}

/* ---------- Section A: Hero ---------- */
.contact-hero {
  background: linear-gradient(160deg, #f5f7f9 0%, #ffffff 70%);
  padding-block: clamp(3rem, 8vw, 6rem);
  text-align: left;
}
.contact-hero__eyebrow {
  font-family: "Acumin Pro", "Inter", sans-serif;
  font-size: 0.8125rem;
  letter-spacing: 0.22em;
  color: var(--c-accent);
  font-weight: 700;
  margin-bottom: 0.75rem;
}
.contact-hero__title-en {
  font-family: "Acumin Pro", "Inter", sans-serif;
  font-size: clamp(2.25rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -0.01em;
}
.contact-hero__title-local {
  font-size: clamp(1.05rem, 2vw, 1.4rem);
  font-weight: 700;
  color: var(--c-text-sub);
  margin-top: 0.4rem;
}
.contact-hero__lead {
  margin-top: 1.25rem;
  max-width: 60ch;
  color: var(--c-text-sub);
}

/* ---------- Section B: Quick contact ---------- */
.contact-quick__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--c-gap);
}
.contact-card {
  border: 1px solid var(--c-border);
  border-radius: var(--c-radius);
  padding: 1.5rem;
  background: var(--c-bg);
}
.contact-card__label {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--c-accent);
  letter-spacing: 0.06em;
  margin-bottom: 0.5rem;
}
.contact-card__phone {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  font-weight: 800;
  color: var(--c-text);
  text-decoration: none;
  display: inline-block;
}
.contact-card__phone:hover { color: var(--c-accent); }
.contact-card__hours,
.contact-card__addr {
  font-size: 0.9rem;
  color: var(--c-text-sub);
  margin-top: 0.4rem;
}
.contact-card__maplink {
  display: inline-block;
  margin-top: 0.6rem;
  font-size: 0.85rem;
  color: var(--c-accent);
  text-decoration: none;
}
.contact-card__maplink:hover { text-decoration: underline; }

/* ---------- Section C: Form ---------- */
.contact-form__note {
  background: #eef4f8;
  border-left: 3px solid var(--c-accent);
  padding: 0.85rem 1rem;
  font-size: 0.875rem;
  color: var(--c-text-sub);
  margin-bottom: 1.75rem;
  border-radius: 0 var(--c-radius) var(--c-radius) 0;
}
.contact-form {
  display: grid;
  gap: 1.25rem;
  max-width: 720px;
}
.contact-field { display: flex; flex-direction: column; gap: 0.4rem; }
.contact-field__label {
  font-size: 0.9rem;
  font-weight: 700;
}
.contact-field__badge {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 700;
  padding: 1px 7px;
  border-radius: 999px;
  margin-left: 0.4rem;
  vertical-align: 1px;
}
.contact-field__badge--req {
  background: #fbe9e6;
  color: var(--c-danger);
}
.contact-field__badge--opt {
  background: var(--c-bg-soft);
  color: var(--c-text-sub);
}

.contact-field input,
.contact-field select,
.contact-field textarea {
  font: inherit;
  color: var(--c-text);
  background: var(--c-bg);
  border: 1px solid var(--c-border);
  border-radius: var(--c-radius);
  padding: 0.65rem 0.85rem;
  width: 100%;
  transition: border-color 160ms ease, box-shadow 160ms ease;
}
.contact-field textarea { min-height: 140px; resize: vertical; }
.contact-field input:focus,
.contact-field select:focus,
.contact-field textarea:focus {
  outline: none;
  border-color: var(--c-accent);
  box-shadow: 0 0 0 3px rgba(14, 122, 184, 0.15);
}
.contact-field input[aria-invalid="true"],
.contact-field select[aria-invalid="true"],
.contact-field textarea[aria-invalid="true"] {
  border-color: var(--c-danger);
  box-shadow: 0 0 0 3px rgba(192, 52, 26, 0.12);
}

/* select: unified arrow */
.contact-field select {
  appearance: none;
  -webkit-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235b6573' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 18px;
  padding-right: 2.5rem;
}

.contact-field__error {
  color: var(--c-danger);
  font-size: 0.8125rem;
  min-height: 1.2em;
}

.contact-consent {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.9rem;
}
.contact-consent input { width: auto; margin-top: 0.25rem; }
.contact-consent a { color: var(--c-accent); }

.contact-submit {
  appearance: none;
  border: 0;
  background: var(--c-accent);
  color: #fff;
  font: inherit;
  font-weight: 700;
  padding: 0.85rem 2rem;
  border-radius: 999px;
  cursor: pointer;
  justify-self: start;
  transition: background-color 160ms ease, transform 160ms ease;
}
.contact-submit:hover { background: var(--c-accent-dk); transform: translateY(-1px); }
.contact-submit:focus-visible { outline: 2px solid var(--c-accent-dk); outline-offset: 3px; }

.form-message {
  border-radius: var(--c-radius);
  padding: 0.85rem 1rem;
  font-size: 0.9rem;
}
.form-message[hidden] { display: none; }
.form-message--success { background: #e7f4ec; color: #1c6b3f; border: 1px solid #b6dcc4; }
.form-message--error   { background: #fbe9e6; color: var(--c-danger); border: 1px solid #e8b6ad; }

/* ---------- Section D: Direct contact ---------- */
.contact-direct__list {
  list-style: none;
  margin: 0; padding: 0;
  display: grid;
  gap: 0.6rem;
}
.contact-direct__list li {
  border: 1px solid var(--c-border);
  border-radius: var(--c-radius);
  padding: 0.85rem 1rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
}
.contact-direct__list a {
  color: var(--c-accent);
  font-weight: 700;
  text-decoration: none;
}
.contact-direct__list a:hover { text-decoration: underline; }

/* ---------- Section E: Sitemap (details/summary) ---------- */
.contact-sitemap details {
  border: 1px solid var(--c-border);
  border-radius: var(--c-radius);
  margin-bottom: 0.75rem;
  background: var(--c-bg);
}
.contact-sitemap summary {
  cursor: pointer;
  padding: 0.95rem 1.15rem;
  font-weight: 700;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  transition: background-color 160ms ease, color 160ms ease;
}
.contact-sitemap summary::-webkit-details-marker { display: none; }
.contact-sitemap summary::before {
  content: "";
  width: 16px; height: 16px;
  flex: none;
  background-color: var(--c-text-sub);
  -webkit-mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M9 6l6 6-6 6' fill='none' stroke='black' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat center / contain;
          mask: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'%3E%3Cpath d='M9 6l6 6-6 6' fill='none' stroke='black' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E") no-repeat center / contain;
  transition: transform 200ms ease;
}
.contact-sitemap details[open] summary::before { transform: rotate(90deg); }
.contact-sitemap summary:hover {
  background: var(--c-bg-soft);
  color: var(--c-accent);
}
.contact-sitemap summary:hover::before { background-color: var(--c-accent); }
.contact-sitemap summary:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: -2px;
}
.contact-sitemap__body {
  padding: 0.25rem 1.15rem 1.1rem 2.4rem;
}
.contact-sitemap ul {
  list-style: none;
  margin: 0; padding: 0;
}
.contact-sitemap ul ul {
  padding-left: 1.1rem;
  margin-top: 0.35rem;
  border-left: 2px solid var(--c-border);
}
.contact-sitemap li { padding: 0.22rem 0; }
.contact-sitemap a {
  color: var(--c-text);
  text-decoration: none;
}
.contact-sitemap a:hover { color: var(--c-accent); text-decoration: underline; }
.contact-sitemap__note {
  font-size: 0.75rem;
  color: var(--c-text-sub);
  font-weight: 400;
  margin-left: 0.3rem;
}

/* ---------- Section F: FAQ shortcut ---------- */
.contact-faq__box {
  border: 1px solid var(--c-border);
  border-radius: var(--c-radius);
  padding: 1.5rem;
  background: var(--c-bg-soft);
}
.contact-faq__links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}
.contact-faq__links a {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--c-accent);
  color: var(--c-accent);
  border-radius: 999px;
  padding: 0.4rem 1rem;
  font-size: 0.85rem;
  font-weight: 700;
  text-decoration: none;
  transition: background-color 160ms ease, color 160ms ease;
}
.contact-faq__links a:hover { background: var(--c-accent); color: #fff; }

/* ---------- Section G: Access ---------- */
.contact-access__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--c-gap);
}

/* ---------- Language switcher (service.itsn.co.jp pattern, tone-adjusted) ---------- */
.contact-lang {
  display: inline-flex;
  align-items: center;
  margin-left: 0.75rem;
}
.contact-lang__toggle {
  appearance: none;
  border: 1px solid var(--c-border, #d8dee4);
  background: #fff;
  color: #1a1f29;
  border-radius: 999px;
  padding: 7px 14px;
  font-size: 0.8125rem;
  line-height: 1;
  cursor: pointer;
  white-space: nowrap;
}
.contact-lang__toggle:hover { border-color: #0e7ab8; background: #f5f7f9; }
.contact-lang__toggle:focus-visible { outline: 2px solid #0e7ab8; outline-offset: 2px; }

.contact-lang-overlay[hidden] { display: none; }
.contact-lang-overlay {
  position: fixed; inset: 0; z-index: 9999;
}
.contact-lang-overlay__backdrop {
  position: absolute; inset: 0;
  background: rgba(10, 14, 26, 0.45);
}
.contact-lang-overlay__panel {
  position: absolute;
  top: 80px; right: 24px;
  width: 248px;
  background: #fff;
  border: 1px solid #d8dee4;
  border-radius: 14px;
  padding: 22px 18px 16px;
  box-shadow: 0 18px 50px rgba(10, 14, 26, 0.2);
}
.contact-lang-overlay__close {
  position: absolute; top: 10px; right: 12px;
  width: 28px; height: 28px;
  border: 0; background: transparent;
  font-size: 21px; line-height: 1; cursor: pointer;
  color: #5b6573; border-radius: 50%;
}
.contact-lang-overlay__close:hover { background: #f1f3f5; color: #1a1f29; }
.contact-lang-overlay__title {
  margin: 0 0 12px;
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: #5b6573;
  font-weight: 700;
}
.contact-lang-overlay__links { display: flex; flex-direction: column; gap: 2px; }
.contact-lang-overlay__links a {
  display: block;
  padding: 10px 13px;
  border-radius: 9px;
  text-decoration: none;
  color: #1a1f29;
  font-size: 0.9375rem;
}
.contact-lang-overlay__links a:hover { background: #f5f7f9; color: #0e7ab8; }
.contact-lang-overlay__links a[aria-current="true"] {
  color: #0e7ab8; font-weight: 700;
}

/* ---------- Responsive ---------- */
@media (max-width: 767px) {
  .contact-submit { width: 100%; text-align: center; }
  .contact-lang-overlay__panel { top: 68px; right: 14px; left: 14px; width: auto; }
  .contact-direct__list li { flex-direction: column; }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .contact-sitemap summary::before,
  .contact-submit,
  .contact-field input,
  .contact-field select,
  .contact-field textarea,
  .contact-faq__links a { transition: none; }
}