/**
 * pu Corporate Theme - Main Styles (Mockup v2)
 * Mobile-first centered shell layout
 */

:root {
  --color-white: #ffffff;
  --color-ivory: #fbf8f5;
  --color-beige: #f3ede8;
  --color-gray-light: #f5f3f1;
  --color-gray: #9a9590;
  --color-gray-dark: #5c5854;
  --color-charcoal: #2d2a27;
  --color-pink-light: #fdecec;
  --color-pink: #d18d8d;
  --color-pink-muted: #c9a0a0;

  --font-serif: "Noto Serif JP", "Yu Mincho", serif;
  --font-sans: "Noto Sans JP", "Hiragino Sans", sans-serif;

  --shell-width: 560px;
  --header-height: 56px;
  --section-pad: 48px;
  --inner-pad: 24px;
  --transition: 0.25s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 2;
  color: var(--color-charcoal);
  background: var(--color-ivory);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

/* --- Background layer --- */
.site-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.site-bg__gradient {
  position: absolute;
  inset: 0;
}

.site-bg__image {
  position: absolute;
  inset: -20px;
  background-size: cover;
  background-position: center;
  opacity: var(--bg-image-opacity, 0.3);
  filter: blur(var(--bg-image-blur, 8px));
  transform: scale(1.05);
}

.has-site-bg-image .site-bg__gradient {
  opacity: 0.95;
}

@media (max-width: 767px) {
  .has-site-bg-image .site-bg__image {
    opacity: calc(var(--bg-image-opacity, 0.3) * 0.5);
  }
}

/* --- Central shell --- */
.site-shell {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: var(--shell-width, 560px);
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.04);
  min-height: 100vh;
}

@media (min-width: 768px) {
  .site-shell {
    border-left: 1px solid rgba(45, 42, 39, 0.04);
    border-right: 1px solid rgba(45, 42, 39, 0.04);
  }
}

#main-content { min-height: 50vh; }

/* --- Header --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(45, 42, 39, 0.06);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  padding: 0 var(--inner-pad);
}

.site-logo__text {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: none;
}

.site-logo__image {
  max-height: 40px;
  width: auto;
}

.site-footer__logo-image {
  max-height: 36px;
  width: auto;
  margin: 0 auto 20px;
}

.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  background: none;
  border: none;
  cursor: pointer;
}

.hamburger__line {
  display: block;
  width: 100%;
  height: 1.5px;
  background: var(--color-charcoal);
  transition: transform var(--transition), opacity var(--transition);
}

.hamburger.is-active .hamburger__line:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.hamburger.is-active .hamburger__line:nth-child(2) { opacity: 0; }
.hamburger.is-active .hamburger__line:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

.site-nav--mobile {
  padding: 8px var(--inner-pad) 20px;
  border-bottom: 1px solid var(--color-gray-light);
  background: rgba(255,255,255,0.98);
}

.site-nav--mobile .site-nav__link {
  display: block;
  padding: 14px 0;
  font-size: 14px;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--color-gray-light);
}

/* --- Sections common --- */
.section {
  padding: var(--section-pad) var(--inner-pad);
}

.section-label {
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--color-charcoal);
  margin-bottom: 24px;
}

.section-label--pink {
  color: var(--color-pink-muted);
  font-size: 12px;
}

.section-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 8px;
}

.section-link {
  font-size: 12px;
  color: var(--color-gray-dark);
  letter-spacing: 0.04em;
}

.section-link-wrap {
  text-align: right;
  margin-top: 16px;
}

.section-link-wrap--center {
  text-align: center;
}

.section-heading--center {
  text-align: center;
  margin-bottom: 28px;
}

.section-heading__line {
  display: block;
  width: 32px;
  height: 1px;
  background: var(--color-pink-muted);
  margin: 0 auto 12px;
}

.section-heading__en {
  font-family: var(--font-serif);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.28em;
  color: var(--color-charcoal);
  margin: 0;
}

.section-heading__ja {
  font-family: var(--font-serif);
  font-size: 13px;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--color-pink-muted);
  margin: 10px 0 0;
}

/* --- Concept --- */
.section--concept {
  background: var(--color-white);
  border-top: 1px solid var(--color-gray-light);
}

.concept__body {
  font-size: 14px;
  line-height: 2.1;
  color: var(--color-gray-dark);
}

.concept__body p {
  margin-bottom: 1em;
}

.concept__body p:last-child {
  margin-bottom: 0;
}

.concept__note {
  margin-top: 20px;
  font-size: 13px;
  color: var(--color-gray);
}

/* --- Hero --- */
.section--hero {
  padding-top: 36px;
  padding-bottom: 40px;
  background: linear-gradient(180deg, #fff 0%, #fbf8f5 100%);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(108px, 34%);
  gap: 20px;
  align-items: start;
}

.hero__content {
  min-width: 0;
}

.hero__title {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 500;
  letter-spacing: 0.1em;
  line-height: 1.6;
  margin-bottom: 20px;
}

.hero__subtitle {
  font-family: var(--font-serif);
  font-size: 15px;
  line-height: 1.9;
  color: var(--color-gray-dark);
  margin-bottom: 20px;
}

.hero__body {
  font-size: 13px;
  line-height: 2.1;
  color: var(--color-gray-dark);
}

.hero__visual {
  width: 100%;
  max-width: 180px;
  justify-self: end;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  border-radius: 2px;
}

.hero__image {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: 2px;
  box-shadow: 0 8px 32px rgba(45, 42, 39, 0.08);
}

/* 極小画面では縦並びにして重なりを防ぐ */
@media (max-width: 380px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .hero__visual {
    max-width: 200px;
    justify-self: center;
    order: -1;
  }
}

/* --- News --- */
.section--news {
  background: var(--color-white);
  border-top: 1px solid var(--color-gray-light);
}

.news-list__item {
  border-bottom: 1px solid var(--color-gray-light);
}

.news-list__link {
  display: grid;
  grid-template-columns: 1fr auto;
  grid-template-rows: auto auto;
  gap: 6px 8px;
  padding: 18px 0;
  align-items: center;
}

.news-list__meta {
  grid-column: 1;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.news-list__date {
  font-size: 12px;
  color: var(--color-gray);
  letter-spacing: 0.04em;
}

.news-list__category {
  font-size: 10px;
  padding: 2px 10px;
  border-radius: 20px;
  letter-spacing: 0.04em;
}

.news-list__category.is-notice {
  background: var(--color-pink-light);
  color: var(--color-pink-muted);
}

.news-list__category.is-business,
.news-list__category.is-media,
.news-list__category.is-press {
  background: var(--color-gray-light);
  color: var(--color-gray-dark);
}

.news-list__title {
  grid-column: 1;
  font-size: 14px;
  line-height: 1.7;
}

.news-list__arrow {
  grid-column: 2;
  grid-row: 1 / 3;
  font-size: 18px;
  color: var(--color-gray);
  align-self: center;
}

.news-list__empty {
  font-size: 14px;
  color: var(--color-gray);
  text-align: center;
  padding: 24px 0;
}

/* --- Business --- */
.section--business {
  background: var(--color-ivory);
  border-top: 1px solid var(--color-gray-light);
}

.business-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.business-card {
  display: grid;
  grid-template-columns: 100px 1fr auto;
  gap: 14px;
  align-items: start;
  background: var(--color-white);
  padding: 16px;
  border-radius: 4px;
  box-shadow: 0 2px 12px rgba(45, 42, 39, 0.04);
  color: inherit;
  text-decoration: none;
}

.business-card--linked {
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.business-card--linked:hover,
.business-card--linked:focus-visible {
  box-shadow: 0 4px 18px rgba(45, 42, 39, 0.08);
  transform: translateY(-1px);
}

.business-card__image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 2px;
}

.business-card__title {
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.6;
  margin: 0 0 8px;
}

.business-card__number {
  font-size: 12px;
  color: var(--color-gray);
  letter-spacing: 0.08em;
  margin-right: 4px;
}

.business-card__description {
  font-size: 12px;
  line-height: 1.9;
  color: var(--color-gray-dark);
  margin: 0;
}

.business-card__arrow {
  font-size: 18px;
  color: var(--color-gray);
  align-self: center;
}

/* --- Representative --- */
.section--representative {
  background: var(--color-white);
  border-top: 1px solid var(--color-gray-light);
}

.representative {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 20px;
  align-items: start;
}

.representative__image {
  width: 100%;
  aspect-ratio: 4 / 5;
  object-fit: cover;
  border-radius: 2px;
}

.representative__name {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 500;
  margin-bottom: 16px;
  line-height: 1.6;
}

.representative__role {
  display: block;
  font-size: 11px;
  color: var(--color-pink-muted);
  letter-spacing: 0.1em;
  margin-bottom: 4px;
}

.representative__body {
  font-size: 13px;
  line-height: 2;
  color: var(--color-gray-dark);
  margin-bottom: 20px;
}

.representative__more {
  margin: 0;
}

.representative__more .btn {
  display: inline-flex;
}

/* --- Company --- */
.section--company {
  background: var(--color-ivory);
  border-top: 1px solid var(--color-gray-light);
}

.company-table__row {
  display: grid;
  grid-template-columns: 110px 1fr;
  border-bottom: 1px solid rgba(45, 42, 39, 0.08);
}

.company-table__row:first-child {
  border-top: 1px solid rgba(45, 42, 39, 0.08);
}

.company-table__label {
  font-size: 12px;
  color: var(--color-gray-dark);
  background: var(--color-gray-light);
  padding: 14px 12px;
  line-height: 1.6;
}

.company-table__value {
  font-size: 13px;
  padding: 14px 12px;
  line-height: 1.6;
  background: var(--color-white);
}

.company-table__line {
  display: block;
}

.company-table__line + .company-table__line {
  margin-top: 4px;
}

/* --- Contact --- */
.section--contact {
  padding: var(--section-pad) var(--inner-pad) 0;
  background: var(--color-white);
  border-top: 1px solid var(--color-gray-light);
}

.contact-cta {
  position: relative;
  min-height: 220px;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px var(--inner-pad);
}

.contact-cta__overlay {
  position: absolute;
  inset: 0;
  background: rgba(255, 255, 255, 0.82);
}

.contact-cta__content {
  position: relative;
  text-align: center;
  width: 100%;
}

.contact-cta__title {
  font-family: var(--font-serif);
  font-size: 18px;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}

.contact-cta__lead {
  font-size: 13px;
  color: var(--color-gray-dark);
  margin-bottom: 24px;
  line-height: 2;
}

.contact-cta__buttons {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: center;
}

.btn--cta-secondary {
  background: rgba(255, 255, 255, 0.9);
  color: var(--color-charcoal);
  border: 1px solid var(--color-charcoal);
  padding: 12px 28px;
  border-radius: 2px;
}

.contact-form-panel {
  padding: var(--inner-pad);
  border-top: 1px solid var(--color-gray-light);
  background: var(--color-ivory);
}

/* --- Forms --- */
.contact-form {
  background: var(--color-white);
  padding: 24px 20px;
  border-radius: 4px;
}

.form-group { margin-bottom: 20px; }

.form-label {
  display: block;
  font-size: 13px;
  margin-bottom: 8px;
}

.form-required {
  font-size: 11px;
  color: var(--color-pink-muted);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 14px;
  font-family: var(--font-sans);
  font-size: 14px;
  background: var(--color-ivory);
  border: 1px solid transparent;
  border-radius: 2px;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-pink-light);
  background: #fff;
}

.form-input.is-error,
.form-select.is-error,
.form-textarea.is-error { border-color: #c45c5c; }

.form-textarea { min-height: 140px; resize: vertical; }

.form-error {
  font-size: 12px;
  color: #c45c5c;
  margin-top: 6px;
}

.form-error--general {
  margin-bottom: 12px;
}

.form-checkbox-label {
  display: flex;
  gap: 10px;
  font-size: 13px;
  line-height: 1.7;
  cursor: pointer;
}

.form-checkbox { margin-top: 4px; accent-color: var(--color-pink-muted); }
.form-checkbox-label a { text-decoration: underline; }

.form-success {
  margin-top: 20px;
  padding: 16px;
  background: var(--color-pink-light);
  border-radius: 2px;
  font-size: 14px;
  text-align: center;
}

/* CF7 */
.contact-form--cf7 input[type="text"],
.contact-form--cf7 input[type="email"],
.contact-form--cf7 select,
.contact-form--cf7 textarea {
  width: 100%;
  padding: 12px 14px;
  font-size: 14px;
  background: var(--color-ivory);
  border: 1px solid transparent;
  border-radius: 2px;
  margin-bottom: 20px;
}

.contact-form--cf7 input[type="submit"] {
  width: 100%;
  padding: 14px;
  background: var(--color-charcoal);
  color: #fff;
  border: none;
  font-size: 14px;
  letter-spacing: 0.08em;
  cursor: pointer;
}

/* --- Buttons --- */
.btn {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 13px;
  letter-spacing: 0.06em;
  cursor: pointer;
  border: none;
  transition: opacity var(--transition);
}

.btn:hover { opacity: 0.85; }

.btn--outline {
  padding: 10px 18px;
  border: 1px solid var(--color-charcoal);
  background: transparent;
  color: var(--color-charcoal);
}

.btn--cta {
  padding: 14px 32px;
  background: var(--color-pink);
  color: #fff;
  border-radius: 2px;
  font-size: 14px;
}

.btn--primary {
  width: 100%;
  padding: 14px;
  background: var(--color-charcoal);
  color: #fff;
  border-radius: 2px;
}

/* --- Footer --- */
.site-footer {
  padding: 40px var(--inner-pad) 32px;
  background: var(--color-white);
  border-top: 1px solid var(--color-gray-light);
  text-align: center;
}

.site-footer__logo {
  font-family: var(--font-serif);
  font-size: 22px;
  letter-spacing: 0.15em;
  margin-bottom: 20px;
}

.site-footer__nav-list {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px 0;
  margin-bottom: 20px;
  font-size: 11px;
  color: var(--color-gray-dark);
}

.site-footer__nav-list li:not(:last-child)::after {
  content: "|";
  margin: 0 10px;
  color: var(--color-gray);
}

.site-footer__sns {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 16px;
  font-size: 11px;
  color: var(--color-gray);
}

.site-footer__copyright {
  font-size: 10px;
  color: var(--color-gray);
  letter-spacing: 0.04em;
}

/* --- Sub pages --- */
.section--page,
.section--news-archive,
.section--news-single {
  padding: calc(var(--header-height) + 24px) var(--inner-pad) var(--section-pad);
}

.page-single__title,
.news-single__title {
  font-family: var(--font-serif);
  font-size: 20px;
  margin-bottom: 24px;
  line-height: 1.6;
}

.news-single__meta {
  display: flex;
  gap: 10px;
  margin-bottom: 12px;
}

.entry-content {
  font-size: 14px;
  line-height: 2;
  color: var(--color-gray-dark);
}

.entry-content p { margin-bottom: 1.5em; }

.privacy-policy-content h2 {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 500;
  margin: 32px 0 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-gray-light);
  letter-spacing: 0.04em;
}

.privacy-policy-content h2:first-child {
  margin-top: 0;
}

.privacy-policy-content ul {
  margin: 0 0 1.5em 1.2em;
  list-style: disc;
}

.privacy-policy-content li {
  margin-bottom: 0.4em;
  line-height: 1.9;
}

.news-single__back,
.page-single__back {
  margin-top: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--color-gray-light);
}

.pagination { margin-top: 32px; text-align: center; }
.pagination .nav-links { display: flex; justify-content: center; gap: 8px; flex-wrap: wrap; }
.pagination a, .pagination span {
  padding: 8px 12px;
  font-size: 13px;
  border: 1px solid var(--color-gray-light);
}
.pagination .current { background: var(--color-charcoal); color: #fff; }

/* --- Slightly larger screens within shell --- */
@media (min-width: 480px) {
  .hero__title { font-size: 28px; }
  .hero__subtitle { font-size: 16px; }
  .hero__body { font-size: 14px; }
  .business-card__description { font-size: 13px; }
  .representative__body { font-size: 14px; }
}