/* ============================================================
   Lien de Bonheur — styles.css
   Design System: §2 of DESIGN_BRIEF.md
   Mobile-first, progressive enhancement
   ============================================================ */

/* ── Google Fonts ── */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;1,400;1,500&family=Inter:wght@400;500&family=Noto+Sans+JP:wght@400;500;700&family=Noto+Serif+JP:wght@400;500;600&display=swap');

/* ── Custom Properties ── */
:root {
  /* Color Palette */
  --ink:        #0D1B2A;
  --teal-deep:  #0D5C73;
  --teal:       #0A8C9E;
  --cyan:       #00D4C8;
  --gold:       #C9A84C;
  --paper:      #FAF8F4;
  --white:      #FFFFFF;
  --mist:       #E6F7F8;
  --text-sub:   #4B5563;
  --text-muted: #6B7280;
  --line:       #E5E7EB;

  /* Gradients */
  --grad-brand: linear-gradient(100deg, var(--teal-deep), var(--teal) 55%, var(--cyan));
  --grad-hero:  linear-gradient(to bottom, rgba(13,27,42,0.35) 0%, rgba(13,27,42,0.55) 100%);

  /* Typography */
  --font-serif-ja:  'Noto Serif JP', 'Yu Mincho', serif;
  --font-serif-en:  'Cormorant Garamond', 'Georgia', serif;
  --font-sans-ja:   'Noto Sans JP', 'Hiragino Kaku Gothic ProN', sans-serif;
  --font-sans-en:   'Inter', system-ui, sans-serif;

  /* Spacing */
  --section-py: clamp(80px, 12vw, 140px);
  --container:  1200px;
  --radius-card: 1rem;
  --radius-img:  0.75rem;
  --radius-btn:  9999px;

  /* Shadows */
  --shadow-card: 0 10px 40px rgba(13,27,42,.08);
  --shadow-card-hover: 0 20px 60px rgba(13,27,42,.14);
  --shadow-header: 0 2px 24px rgba(13,27,42,.10);

  /* Transitions */
  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ── Reset & Base ── */
*, *::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-ja);
  font-weight: 400;
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ink);
  background-color: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  border: none;
  background: none;
  font: inherit;
}

/* ── Container ── */
.container {
  width: min(var(--container), 100% - 2 * clamp(1.25rem, 5vw, 3rem));
  margin-inline: auto;
}

/* ── Typography ── */
.font-serif-ja { font-family: var(--font-serif-ja); }
.font-serif-en { font-family: var(--font-serif-en); }
.font-sans-en  { font-family: var(--font-sans-en); }

h1, h2, h3, h4 {
  font-family: var(--font-serif-ja);
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: 0.06em;
}

.section-eyebrow {
  font-family: var(--font-serif-en);
  font-size: clamp(0.75rem, 1.5vw, 0.85rem);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
  display: block;
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-serif-ja);
  font-size: clamp(26px, 4vw, 40px);
  font-weight: 600;
  letter-spacing: 0.05em;
  line-height: 1.3;
  color: var(--ink);
}

.section-title-en {
  font-family: var(--font-serif-en);
  font-size: clamp(22px, 3.5vw, 36px);
  font-weight: 500;
  font-style: italic;
  letter-spacing: 0.02em;
  color: var(--teal-deep);
  margin-top: 0.25rem;
}

.section-lead {
  font-size: clamp(0.9rem, 1.8vw, 1.05rem);
  line-height: 1.95;
  color: var(--text-sub);
  max-width: 600px;
}

/* Gold hairline divider */
.gold-rule {
  display: block;
  width: 48px;
  height: 1px;
  background: var(--gold);
  margin: 1.25rem 0 2rem;
}

.gold-rule--center {
  margin-inline: auto;
  margin-bottom: 2.5rem;
}

/* ── Buttons / CTA ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 2rem;
  border-radius: var(--radius-btn);
  font-size: 0.875rem;
  font-family: var(--font-sans-en);
  font-weight: 500;
  letter-spacing: 0.08em;
  transition: all 0.3s var(--ease);
  white-space: nowrap;
}

.btn-primary {
  background: var(--grad-brand);
  color: var(--white);
  box-shadow: 0 4px 20px rgba(13, 92, 115, 0.25);
}

.btn-primary:hover {
  box-shadow: 0 6px 30px rgba(0, 212, 200, 0.4);
  transform: translateY(-2px);
}

.btn-outline {
  border: 1.5px solid var(--teal);
  color: var(--teal);
  background: transparent;
}

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

.btn-outline-white {
  border: 1.5px solid rgba(255,255,255,0.7);
  color: var(--white);
  background: transparent;
}

.btn-outline-white:hover {
  background: rgba(255,255,255,0.15);
  border-color: var(--white);
}

.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.8rem;
}

/* Arrow icon for CTA */
.btn-arrow {
  font-style: normal;
  transition: transform 0.3s var(--ease);
}
.btn:hover .btn-arrow {
  transform: translateX(4px);
}

/* ── Header ── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  transition: background 0.4s var(--ease), box-shadow 0.4s var(--ease), padding 0.4s var(--ease);
  padding: 1.5rem 0;
}

.site-header.is-transparent {
  background: transparent;
}

.site-header.is-solid {
  background: var(--paper);
  box-shadow: var(--shadow-header);
  padding: 1rem 0;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

/* Logo */
.site-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.logo-emblem {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.logo-emblem img {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.logo-name-fr {
  font-family: var(--font-serif-en);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  transition: color 0.4s var(--ease);
}

.logo-name-ja {
  font-family: var(--font-sans-ja);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  color: var(--text-muted);
  transition: color 0.4s var(--ease);
}

.site-header.is-transparent .logo-name-fr {
  color: var(--white);
}

.site-header.is-transparent .logo-name-ja {
  color: rgba(255,255,255,0.7);
}

.site-header.is-solid .logo-name-fr {
  color: var(--teal-deep);
}

/* Primary Nav */
.site-nav {
  display: none;
}

@media (min-width: 1024px) {
  .site-nav {
    display: flex;
    align-items: center;
    gap: 2rem;
  }
}

.nav-link {
  font-family: var(--font-sans-en);
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  font-weight: 500;
  transition: color 0.3s var(--ease);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--cyan);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s var(--ease);
}

.nav-link:hover::after {
  transform: scaleX(1);
}

.site-header.is-transparent .nav-link {
  color: rgba(255,255,255,0.95);
  text-shadow: 0 1px 4px rgba(13,27,42,0.4);
}

.site-header.is-solid .nav-link {
  color: var(--ink);
}

.site-header.is-transparent .nav-link:hover {
  color: var(--white);
}

/* Header right controls */
.header-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Lang switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 0.15rem;
  font-family: var(--font-sans-en);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
}

.lang-btn {
  padding: 0.2rem 0.45rem;
  border-radius: 3px;
  transition: all 0.2s var(--ease);
  font-weight: 500;
}

.lang-btn.active {
  background: var(--teal);
  color: var(--white);
}

.site-header.is-transparent .lang-btn {
  color: rgba(255,255,255,0.8);
}

.site-header.is-transparent .lang-btn.active {
  background: rgba(255,255,255,0.25);
  color: var(--white);
}

.site-header.is-solid .lang-btn {
  color: var(--text-sub);
}

.lang-sep {
  color: var(--text-muted);
  font-size: 0.65rem;
}

.site-header.is-transparent .lang-sep {
  color: rgba(255,255,255,0.4);
}

/* Header CTA button */
.header-cta {
  display: none;
}

@media (min-width: 640px) {
  .header-cta {
    display: inline-flex;
    padding: 0.55rem 1.4rem;
    font-size: 0.78rem;
  }
}

.site-header.is-transparent .header-cta {
  border-color: rgba(255,255,255,0.7);
  color: var(--white);
}

.site-header.is-transparent .header-cta:hover {
  background: rgba(255,255,255,0.15);
}

/* Hamburger */
.hamburger {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 36px;
  height: 36px;
  padding: 4px;
  transition: opacity 0.2s;
}

@media (min-width: 1024px) {
  .hamburger {
    display: none;
  }
}

.hamburger-bar {
  display: block;
  height: 1.5px;
  background: currentColor;
  border-radius: 1px;
  transition: transform 0.35s var(--ease), opacity 0.35s var(--ease), width 0.35s var(--ease);
}

.hamburger-bar:nth-child(3) {
  width: 65%;
}

.site-header.is-transparent .hamburger {
  color: var(--white);
}

.site-header.is-solid .hamburger {
  color: var(--ink);
}

.hamburger.is-open .hamburger-bar:nth-child(1) {
  transform: translateY(6.5px) rotate(45deg);
}

.hamburger.is-open .hamburger-bar:nth-child(2) {
  opacity: 0;
}

.hamburger.is-open .hamburger-bar:nth-child(3) {
  width: 100%;
  transform: translateY(-6.5px) rotate(-45deg);
}

/* Mobile menu drawer */
.mobile-menu {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(320px, 85vw);
  background: var(--paper);
  box-shadow: -8px 0 40px rgba(13,27,42,.15);
  z-index: 999;
  padding: 5rem 2.5rem 2.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transform: translateX(100%);
  transition: transform 0.4s var(--ease);
}

.mobile-menu.is-open {
  transform: translateX(0);
}

.mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(13,27,42,.5);
  z-index: 998;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s var(--ease);
}

.mobile-overlay.is-open {
  opacity: 1;
  pointer-events: all;
}

.mobile-nav-link {
  display: block;
  font-family: var(--font-serif-ja);
  font-size: 1.1rem;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--line);
  color: var(--ink);
  letter-spacing: 0.06em;
  transition: color 0.2s;
}

.mobile-nav-link:hover {
  color: var(--teal);
}

.mobile-menu-footer {
  margin-top: auto;
}

/* ── Hero Section ── */
.hero {
  position: relative;
  height: 100dvh;
  min-height: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--grad-hero);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: var(--white);
  padding: 0 1.5rem;
  max-width: 760px;
}

.hero-eyebrow {
  font-family: var(--font-serif-en);
  font-size: clamp(0.75rem, 1.5vw, 0.9rem);
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.8);
  margin-bottom: 1.25rem;
  display: block;
}

.hero-title {
  font-family: var(--font-serif-ja);
  font-size: clamp(40px, 6vw, 76px);
  font-weight: 600;
  letter-spacing: 0.08em;
  line-height: 1.2;
  color: var(--white);
  margin-bottom: 0.5rem;
}

.hero-title-en {
  font-family: var(--font-serif-en);
  font-size: clamp(18px, 3vw, 32px);
  font-weight: 400;
  font-style: italic;
  letter-spacing: 0.06em;
  color: rgba(255,255,255,0.85);
  margin-bottom: 1.75rem;
}

.hero-lead {
  font-size: clamp(0.875rem, 1.8vw, 1rem);
  line-height: 2;
  color: rgba(255,255,255,0.85);
  font-family: var(--font-sans-ja);
  margin-bottom: 2.5rem;
  font-weight: 400;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-scroll {
  position: absolute;
  bottom: 2.5rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: rgba(255,255,255,0.7);
}

.hero-scroll-text {
  font-family: var(--font-sans-en);
  font-size: 0.65rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
}

.hero-scroll-arrow {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, rgba(255,255,255,0.7), transparent);
  animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
  0%, 100% { opacity: 0.5; transform: scaleY(1); }
  50% { opacity: 1; transform: scaleY(1.15); }
}

/* ── Section Base ── */
.section {
  padding-block: var(--section-py);
}

.section-header {
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.section-header--center {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* ── Concept / Intro Section ── */
.concept-section {
  background: var(--white);
}

.concept-inner {
  display: grid;
  gap: clamp(2.5rem, 5vw, 5rem);
  align-items: center;
}

@media (min-width: 900px) {
  .concept-inner {
    grid-template-columns: 1fr 1fr;
  }
}

.concept-body {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.concept-text {
  font-family: var(--font-serif-ja);
  font-size: clamp(1.1rem, 2.2vw, 1.35rem);
  line-height: 2.1;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--ink);
}

.concept-sub {
  font-size: 0.925rem;
  line-height: 1.95;
  color: var(--text-sub);
}

.concept-visual {
  position: relative;
  border-radius: var(--radius-img);
  overflow: hidden;
  aspect-ratio: 4/3;
}

.concept-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.concept-visual-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 1.5rem;
  background: linear-gradient(transparent, rgba(13,27,42,0.6));
  color: rgba(255,255,255,0.9);
  font-family: var(--font-serif-en);
  font-size: 0.875rem;
  font-style: italic;
  letter-spacing: 0.06em;
}

/* ── Properties Grid ── */
.properties-section {
  background: var(--paper);
}

.properties-grid {
  display: grid;
  gap: 1.75rem;
  grid-template-columns: 1fr;
}

@media (min-width: 600px) {
  .properties-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .properties-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Property Card */
.property-card {
  background: var(--white);
  border-radius: var(--radius-card);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
  display: flex;
  flex-direction: column;
}

.property-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
}

.property-card-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 3/2;
  flex-shrink: 0;
}

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

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

.property-card-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: rgba(13,27,42,0.6);
  color: var(--white);
  font-family: var(--font-sans-en);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 0.25rem 0.65rem;
  border-radius: 9999px;
  backdrop-filter: blur(4px);
}

.property-card-body {
  padding: 1.5rem 1.75rem 1.75rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.property-card-name {
  font-family: var(--font-serif-ja);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--ink);
  line-height: 1.2;
}

.property-card-name-en {
  font-family: var(--font-serif-en);
  font-size: 0.8rem;
  font-style: italic;
  letter-spacing: 0.08em;
  color: var(--teal);
  margin-top: 0.15rem;
  margin-bottom: 0.5rem;
}

.property-card-area {
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  font-family: var(--font-sans-en);
  margin-bottom: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.property-card-area svg {
  width: 12px;
  height: 12px;
  flex-shrink: 0;
  color: var(--teal);
}

.property-card-concept {
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--text-sub);
  flex: 1;
  margin-bottom: 1.25rem;
}

.property-card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-sans-en);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--teal);
  margin-top: auto;
  transition: gap 0.3s var(--ease), color 0.3s var(--ease);
}

.property-card-link:hover {
  gap: 0.65rem;
  color: var(--teal-deep);
}

/* ── Areas Section ── */
.areas-section {
  background: var(--ink);
}

.areas-grid {
  display: grid;
  gap: 1.5rem;
}

@media (min-width: 900px) {
  .areas-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
  }
}

/* Full-bleed background image card */
.area-card {
  position: relative;
  border-radius: var(--radius-card);
  overflow: hidden;
  min-height: 380px;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  box-shadow: 0 20px 60px rgba(13,27,42,.35);
  cursor: default;
}

@media (min-width: 900px) {
  .area-card {
    min-height: 420px;
  }
}

/* Background image layer */
.area-card-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  transition: transform 0.7s var(--ease);
  will-change: transform;
}

.area-card:hover .area-card-bg {
  transform: scale(1.04);
}

/* Gradient overlay — ink寄りの上品なグラデーション */
.area-card-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(13,27,42,0.88) 0%,
    rgba(13,27,42,0.55) 45%,
    rgba(13,27,42,0.18) 100%
  );
  transition: opacity 0.4s var(--ease);
}

.area-card:hover .area-card-overlay {
  opacity: 0.92;
}

/* Content layer (above image+overlay) */
.area-card-content {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 1.25rem;
  padding: 2rem 2rem 2rem;
  color: var(--white);
  height: 100%;
}

@media (min-width: 900px) {
  .area-card-content {
    padding: 2.5rem 2.25rem 2.25rem;
  }
}

.area-card-header {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.area-eyebrow {
  font-family: var(--font-serif-en);
  font-size: 0.78rem;
  font-style: italic;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.65);
  display: block;
}

.area-card-title {
  font-family: var(--font-serif-ja);
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  font-weight: 600;
  letter-spacing: 0.1em;
  line-height: 1.2;
  color: var(--white);
  margin: 0;
}

.area-card-copy {
  font-family: var(--font-sans-ja);
  font-size: 0.88rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.82);
  margin-top: 0.35rem;
  max-width: 28em;
}

.area-card-footer {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(255,255,255,0.15);
}

.area-card-props {
  font-family: var(--font-sans-en);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.area-prop-tag {
  color: rgba(255,255,255,0.9);
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.22);
  padding: 0.22rem 0.65rem;
  border-radius: 9999px;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
}

.area-card:hover .area-prop-tag {
  background: rgba(0,212,200,0.15);
  border-color: rgba(0,212,200,0.4);
}

.area-card-link {
  font-family: var(--font-sans-en);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--cyan);
  text-decoration: none;
  transition: color 0.3s var(--ease), letter-spacing 0.3s var(--ease);
  align-self: flex-start;
}

.area-card-link:hover {
  color: var(--white);
  letter-spacing: 0.14em;
}

/* ── Why Section ── */
.why-section {
  background: var(--white);
}

.why-grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: 1fr;
}

@media (min-width: 600px) {
  .why-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .why-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.why-item {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.why-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--mist);
  border-radius: 12px;
  color: var(--teal);
  flex-shrink: 0;
}

.why-icon svg {
  width: 24px;
  height: 24px;
}

.why-title {
  font-family: var(--font-serif-ja);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--ink);
}

.why-desc {
  font-size: 0.875rem;
  line-height: 1.85;
  color: var(--text-sub);
}

/* ── Reserve CTA Section ── */
.reserve-section {
  background: var(--ink);
  position: relative;
  overflow: hidden;
}

.reserve-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(13,92,115,0.3) 0%, transparent 60%);
  pointer-events: none;
}

.reserve-inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(2.5rem, 5vw, 4rem);
  align-items: start;
}

@media (min-width: 900px) {
  .reserve-inner {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }
}

.reserve-headline {
  color: var(--white);
}

.reserve-headline .section-eyebrow {
  color: var(--cyan);
  opacity: 0.8;
}

.reserve-headline .section-title {
  color: var(--white);
}

.reserve-headline .section-title-en {
  color: rgba(255,255,255,0.6);
}

.reserve-lead {
  font-size: 0.9rem;
  line-height: 1.9;
  color: rgba(255,255,255,0.7);
  margin-top: 1rem;
}

.reserve-form-area {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-card);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  backdrop-filter: blur(8px);
}

.reserve-form-title {
  font-family: var(--font-sans-ja);
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: rgba(255,255,255,0.6);
  margin-bottom: 1.5rem;
  text-transform: uppercase;
}

.reserve-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.reserve-form-row {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: 1fr;
}

@media (min-width: 480px) {
  .reserve-form-row {
    grid-template-columns: 1fr 1fr;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-label {
  font-family: var(--font-sans-en);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.55);
}

.form-input,
.form-select {
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 8px;
  padding: 0.7rem 1rem;
  font-size: 0.875rem;
  color: var(--white);
  font-family: var(--font-sans-ja);
  transition: border-color 0.2s, background 0.2s;
  width: 100%;
  -webkit-appearance: none;
}

.form-input:focus,
.form-select:focus {
  outline: none;
  border-color: var(--cyan);
  background: rgba(255,255,255,0.12);
}

.form-input::placeholder {
  color: rgba(255,255,255,0.35);
}

.form-select option {
  background: var(--ink);
  color: var(--white);
}

.form-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.form-note {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.04em;
  margin-top: 0.75rem;
  line-height: 1.7;
}

/* ── Footer ── */
.site-footer {
  background: var(--ink);
  color: rgba(255,255,255,0.75);
  padding-block: clamp(3rem, 6vw, 5rem) 2rem;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.footer-inner {
  display: grid;
  gap: 3rem;
}

@media (min-width: 900px) {
  .footer-inner {
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 4rem;
  }
}

.footer-brand .logo-name-fr {
  color: var(--white);
}

.footer-brand .logo-name-ja {
  color: rgba(255,255,255,0.45);
}

.footer-tagline {
  font-family: var(--font-serif-ja);
  font-size: 0.85rem;
  line-height: 1.9;
  color: rgba(255,255,255,0.55);
  margin-top: 1rem;
}

.footer-tagline-en {
  font-family: var(--font-serif-en);
  font-size: 0.8rem;
  font-style: italic;
  color: rgba(255,255,255,0.4);
  margin-top: 0.25rem;
  display: block;
  letter-spacing: 0.04em;
}

.footer-company {
  font-size: 0.75rem;
  line-height: 2;
  color: rgba(255,255,255,0.4);
  margin-top: 1.25rem;
}

.footer-col-title {
  font-family: var(--font-sans-en);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.5);
  margin-bottom: 1.25rem;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-link {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.65);
  transition: color 0.2s;
  letter-spacing: 0.03em;
}

.footer-link:hover {
  color: var(--cyan);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 1.75rem;
  margin-top: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copy {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.35);
  letter-spacing: 0.05em;
  font-family: var(--font-sans-en);
}

.footer-lang {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-lang-btn {
  font-family: var(--font-sans-en);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: rgba(255,255,255,0.45);
  padding: 0.2rem 0.5rem;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 3px;
  transition: all 0.2s;
}

.footer-lang-btn:hover,
.footer-lang-btn.active {
  color: var(--white);
  border-color: rgba(255,255,255,0.35);
}

.footer-image-note {
  font-size: 0.7rem;
  color: rgba(255,255,255,0.25);
  font-style: italic;
  letter-spacing: 0.02em;
}

/* ── Fade-in Animation ── */
/* JS有効時のみ要素を隠す（has-jsクラスはインラインスクリプトで付与） */
.has-js .fade-in {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}

.fade-in.is-visible {
  opacity: 1;
  transform: none;
}

/* 遅延もhas-js配下でのみ有効 */
.has-js .fade-in--delay-1 { transition-delay: 0.1s; }
.has-js .fade-in--delay-2 { transition-delay: 0.2s; }
.has-js .fade-in--delay-3 { transition-delay: 0.3s; }
.has-js .fade-in--delay-4 { transition-delay: 0.4s; }
.has-js .fade-in--delay-5 { transition-delay: 0.5s; }

/* ── Property Page Hero ── */
.prop-hero {
  position: relative;
  height: min(85vh, 700px);
  min-height: 500px;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}

.prop-hero-bg {
  position: absolute;
  inset: 0;
}

.prop-hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.prop-hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(13,27,42,0.75) 0%, rgba(13,27,42,0.2) 55%, transparent 100%);
}

.prop-hero-content {
  position: relative;
  z-index: 1;
  padding-bottom: clamp(2.5rem, 6vw, 5rem);
  width: 100%;
}

.prop-hero-name {
  font-family: var(--font-serif-ja);
  font-size: clamp(36px, 5.5vw, 72px);
  font-weight: 600;
  letter-spacing: 0.1em;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 0.25rem;
}

.prop-hero-name-en {
  font-family: var(--font-serif-en);
  font-size: clamp(16px, 2.5vw, 28px);
  font-weight: 400;
  font-style: italic;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.75);
  margin-bottom: 1rem;
}

.prop-hero-concept {
  font-family: var(--font-serif-ja);
  font-size: clamp(0.875rem, 1.8vw, 1.05rem);
  line-height: 1.85;
  color: rgba(255,255,255,0.85);
  max-width: 540px;
}

/* ── Breadcrumb ── */
.breadcrumb {
  padding: 1rem 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-sans-en);
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  letter-spacing: 0.05em;
}

.breadcrumb a {
  color: var(--teal);
  transition: color 0.2s;
}

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

.breadcrumb-sep {
  color: var(--line);
}

/* ── Gallery Grid ── */
.gallery-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .gallery-grid {
    grid-template-columns: 2fr 1fr;
    grid-template-rows: 1fr 1fr;
  }

  .gallery-grid .gallery-main {
    grid-row: 1 / 3;
  }
}

.gallery-img {
  border-radius: var(--radius-img);
  overflow: hidden;
  aspect-ratio: 3/2;
}

.gallery-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}

.gallery-img:hover img {
  transform: scale(1.03);
}

/* ── Amenities Icons ── */
.amenities-grid {
  display: grid;
  gap: 1.25rem 2rem;
  grid-template-columns: repeat(2, 1fr);
}

@media (min-width: 640px) {
  .amenities-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 900px) {
  .amenities-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.amenity-item {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.875rem;
  color: var(--text-sub);
}

.amenity-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  color: var(--teal);
}

/* ── Access / Info Table ── */
.info-table {
  width: 100%;
  border-collapse: collapse;
}

.info-table tr {
  border-bottom: 1px solid var(--line);
}

.info-table th {
  font-family: var(--font-sans-ja);
  font-weight: 500;
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  text-align: left;
  padding: 0.9rem 1rem 0.9rem 0;
  width: 8rem;
  vertical-align: top;
  white-space: nowrap;
}

.info-table td {
  font-size: 0.9rem;
  color: var(--text-sub);
  padding: 0.9rem 0;
  line-height: 1.75;
}

/* ── Back link ── */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-sans-en);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  color: var(--teal);
  transition: gap 0.3s var(--ease);
  margin-bottom: 1.5rem;
}

.back-link:hover {
  gap: 0.6rem;
}

/* ── Utility ── */
.text-center { text-align: center; }
.text-white  { color: var(--white); }
.mb-0 { margin-bottom: 0; }
.mt-auto { margin-top: auto; }
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border-width: 0;
}

/* ── Focus Visible ── */
:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 3px;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--paper); }
::-webkit-scrollbar-thumb { background: var(--teal); border-radius: 3px; }