/* Karuizawa Villa Portfolio — elegant forest aesthetic */
:root {
  --forest: #2c4a3e;
  --forest-deep: #1a2f28;
  --forest-soft: #3d5c4f;
  --sage: #6b8f7a;
  --warm-gray: #8a857c;
  --warm-gray-light: #e8e4dc;
  --warm-gray-mid: #c4bfb4;
  --cream: #f7f5f0;
  --white: #ffffff;
  --ink: #2a2825;
  --ink-soft: #5a564e;
  --accent: #a67c52;
  --accent-soft: #c4a574;
  --shadow: 0 4px 24px rgba(26, 47, 40, 0.08);
  --shadow-lg: 0 12px 48px rgba(26, 47, 40, 0.12);
  --radius: 4px;
  --max: 1120px;
  --font-serif: "Noto Serif JP", "Georgia", serif;
  --font-sans: "Noto Sans JP", "Helvetica Neue", sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  font-weight: 400;
  color: var(--ink);
  background: var(--cream);
  line-height: 1.7;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }
a { color: var(--forest); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--accent); }
h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1.35;
  color: var(--forest-deep);
}

/* Language visibility */
[data-lang="en"] .lang-ja,
[data-lang="ja"] .lang-en { display: none !important; }
body[data-lang="ja"] .lang-ja,
body[data-lang="en"] .lang-en { display: initial; }
body[data-lang="ja"] span.lang-ja,
body[data-lang="en"] span.lang-en { display: inline; }
body[data-lang="ja"] p.lang-ja,
body[data-lang="ja"] div.lang-ja,
body[data-lang="ja"] li.lang-ja,
body[data-lang="ja"] h1.lang-ja,
body[data-lang="ja"] h2.lang-ja,
body[data-lang="ja"] h3.lang-ja,
body[data-lang="ja"] label.lang-ja,
body[data-lang="en"] p.lang-en,
body[data-lang="en"] div.lang-en,
body[data-lang="en"] li.lang-en,
body[data-lang="en"] h1.lang-en,
body[data-lang="en"] h2.lang-en,
body[data-lang="en"] h3.lang-en,
body[data-lang="en"] label.lang-en { display: block; }
body[data-lang="ja"] .inline.lang-ja,
body[data-lang="en"] .inline.lang-en { display: inline; }

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(247, 245, 240, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--warm-gray-light);
}
.header-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.logo {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  color: var(--forest-deep);
  letter-spacing: 0.04em;
}
.logo span { color: var(--sage); font-weight: 400; font-size: 0.85em; }
.nav {
  display: flex;
  align-items: center;
  gap: 1.75rem;
}
.nav a {
  font-size: 0.875rem;
  color: var(--ink-soft);
  letter-spacing: 0.06em;
}
.nav a:hover, .nav a.active { color: var(--forest); }
.lang-toggle {
  display: flex;
  border: 1px solid var(--warm-gray-mid);
  border-radius: 2px;
  overflow: hidden;
  font-size: 0.75rem;
  letter-spacing: 0.05em;
}
.lang-toggle button {
  background: transparent;
  border: none;
  padding: 0.35rem 0.65rem;
  cursor: pointer;
  color: var(--warm-gray);
  font-family: var(--font-sans);
  font-size: 0.75rem;
}
.lang-toggle button.active {
  background: var(--forest);
  color: var(--white);
}
.menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}
.menu-btn span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--forest);
  margin: 5px 0;
}

/* Hero */
.hero {
  position: relative;
  min-height: 72vh;
  display: flex;
  align-items: flex-end;
  background: var(--forest-deep);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0.75;
}
.hero-bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(26,47,40,0.85) 0%, rgba(26,47,40,0.25) 55%, rgba(26,47,40,0.35) 100%);
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--max);
  margin: 0 auto;
  padding: 4rem 1.5rem 3.5rem;
  color: var(--white);
  width: 100%;
}
.hero-eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-soft);
  margin-bottom: 0.75rem;
}
.hero h1 {
  color: var(--white);
  font-size: clamp(1.85rem, 4.5vw, 2.85rem);
  font-weight: 500;
  margin-bottom: 1rem;
  max-width: 16em;
}
.hero p {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.85);
  max-width: 32em;
  margin-bottom: 1.75rem;
}
.btn {
  display: inline-block;
  padding: 0.85rem 1.75rem;
  font-size: 0.875rem;
  letter-spacing: 0.08em;
  border: none;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: background 0.2s, color 0.2s, border-color 0.2s;
  text-decoration: none;
}
.btn-primary {
  background: var(--white);
  color: var(--forest-deep);
}
.btn-primary:hover { background: var(--cream); color: var(--forest); }
.btn-outline {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.5);
  color: var(--white);
}
.btn-outline:hover { border-color: var(--white); background: rgba(255,255,255,0.08); color: var(--white); }
.btn-forest {
  background: var(--forest);
  color: var(--white);
}
.btn-forest:hover { background: var(--forest-soft); color: var(--white); }
.btn-ghost {
  background: transparent;
  border: 1px solid var(--forest);
  color: var(--forest);
}
.btn-ghost:hover { background: var(--forest); color: var(--white); }

/* Sections */
.section {
  max-width: var(--max);
  margin: 0 auto;
  padding: 4.5rem 1.5rem;
}
.section-header {
  text-align: center;
  margin-bottom: 3rem;
}
.section-header .eyebrow {
  font-size: 0.75rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--sage);
  margin-bottom: 0.5rem;
}
.section-header h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  margin-bottom: 0.75rem;
}
.section-header p {
  color: var(--ink-soft);
  max-width: 36em;
  margin: 0 auto;
}

/* Property cards */
.property-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}
.property-card {
  background: var(--white);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: box-shadow 0.3s, transform 0.3s;
}
.property-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-3px);
}
.property-card .card-img {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--warm-gray-light);
  position: relative;
}
.property-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s;
}
.property-card:hover .card-img img { transform: scale(1.03); }
.card-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: linear-gradient(145deg, var(--forest-soft), var(--forest-deep));
  color: rgba(255,255,255,0.7);
  padding: 2rem;
  text-align: center;
}
.card-placeholder .icon-forest {
  font-size: 2.5rem;
  margin-bottom: 0.75rem;
  opacity: 0.6;
}
.card-placeholder p {
  font-size: 0.85rem;
  letter-spacing: 0.06em;
}
.badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  background: rgba(247,245,240,0.92);
  color: var(--forest);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  padding: 0.35rem 0.7rem;
  text-transform: uppercase;
}
.card-body { padding: 1.75rem 1.5rem 2rem; }
.card-body .location {
  font-size: 0.8rem;
  color: var(--sage);
  letter-spacing: 0.04em;
  margin-bottom: 0.4rem;
}
.card-body h3 {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
}
.card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin-bottom: 1.25rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--warm-gray-light);
}
.card-meta span::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 4px;
  background: var(--sage);
  border-radius: 50%;
  margin-right: 0.5rem;
  vertical-align: middle;
}
.card-body .excerpt {
  font-size: 0.925rem;
  color: var(--ink-soft);
  margin-bottom: 1.5rem;
}
.card-body .btn { width: 100%; text-align: center; }

/* About / Contact */
.about-band {
  background: var(--forest-deep);
  color: rgba(255,255,255,0.88);
}
.about-band .section { padding-top: 4rem; padding-bottom: 4rem; }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}
.about-band h2 { color: var(--white); margin-bottom: 1rem; }
.about-band .eyebrow { color: var(--accent-soft); }
.about-band p { margin-bottom: 1rem; }
.contact-form {
  background: rgba(255,255,255,0.06);
  padding: 2rem;
  border: 1px solid rgba(255,255,255,0.12);
}
.contact-form label {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  margin-bottom: 0.35rem;
  color: rgba(255,255,255,0.65);
}
.contact-form .field { margin-bottom: 1.15rem; }
.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 0.75rem 0.9rem;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.18);
  color: var(--white);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  border-radius: var(--radius);
}
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: rgba(255,255,255,0.35); }
.contact-form select option { background: var(--forest-deep); color: var(--white); }
.contact-form textarea { min-height: 110px; resize: vertical; }
.form-note {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.5);
  margin-top: 1rem;
}
.mailto-link {
  color: var(--accent-soft);
  border-bottom: 1px solid rgba(166,124,82,0.4);
}
.mailto-link:hover { color: var(--white); }

/* Footer */
.site-footer {
  background: var(--ink);
  color: rgba(255,255,255,0.5);
  padding: 2.5rem 1.5rem;
  text-align: center;
  font-size: 0.8rem;
}
.site-footer .logo { color: rgba(255,255,255,0.8); margin-bottom: 0.75rem; display: block; }
.site-footer .footnote {
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  max-width: 40em;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.6;
}

/* Detail page */
.detail-hero {
  position: relative;
  height: 55vh;
  min-height: 320px;
  background: var(--forest-deep);
  overflow: hidden;
}
.detail-hero img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.85;
}
.detail-hero .overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(26,47,40,0.7), transparent 50%);
  display: flex;
  align-items: flex-end;
}
.detail-hero .overlay-inner {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2.5rem 1.5rem;
  width: 100%;
  color: var(--white);
}
.detail-hero h1 { color: var(--white); font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
.detail-hero .loc { color: var(--accent-soft); font-size: 0.9rem; margin-top: 0.35rem; }

.detail-layout {
  max-width: var(--max);
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 3rem;
  align-items: start;
}
.detail-main h2 {
  font-size: 1.35rem;
  margin: 2rem 0 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--warm-gray-light);
}
.detail-main h2:first-child { margin-top: 0; }
.detail-main p { color: var(--ink-soft); margin-bottom: 1rem; }
.feature-list {
  list-style: none;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem 1.5rem;
  margin: 1rem 0 1.5rem;
}
.feature-list li {
  font-size: 0.925rem;
  color: var(--ink-soft);
  padding-left: 1.1rem;
  position: relative;
}
.feature-list li::before {
  content: "◆";
  position: absolute;
  left: 0;
  font-size: 0.45rem;
  top: 0.55em;
  color: var(--sage);
}

/* Gallery */
.gallery {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin: 1.5rem 0;
}
.gallery figure {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: var(--warm-gray-light);
  cursor: pointer;
}
.gallery figure:first-child {
  grid-column: 1 / -1;
  aspect-ratio: 16/9;
}
.gallery img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.4s;
}
.gallery figure:hover img { transform: scale(1.04); }
.gallery figcaption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.5rem 0.75rem;
  background: linear-gradient(transparent, rgba(0,0,0,0.55));
  color: var(--white);
  font-size: 0.75rem;
  opacity: 0;
  transition: opacity 0.2s;
}
.gallery figure:hover figcaption { opacity: 1; }

/* Sidebar specs */
.specs-card {
  background: var(--white);
  box-shadow: var(--shadow);
  padding: 1.75rem;
  position: sticky;
  top: 5.5rem;
}
.specs-card h3 {
  font-size: 1.1rem;
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--warm-gray-light);
}
.spec-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--warm-gray-light);
  font-size: 0.875rem;
}
.spec-row:last-of-type { border-bottom: none; }
.spec-row .label { color: var(--warm-gray); }
.spec-row .value { color: var(--ink); text-align: right; font-weight: 500; }
.specs-card .inquiry-cta {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--warm-gray-light);
}
.specs-card .inquiry-cta p {
  font-size: 0.85rem;
  color: var(--ink-soft);
  margin-bottom: 1rem;
}
.specs-card .btn { width: 100%; text-align: center; margin-bottom: 0.5rem; }
.inquiry-only {
  display: inline-block;
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

/* Placeholder page gallery */
.coming-soon {
  background: linear-gradient(145deg, var(--forest-soft), var(--forest-deep));
  aspect-ratio: 16/9;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.75);
  text-align: center;
  padding: 3rem;
  margin: 1.5rem 0;
}
.coming-soon .icon { font-size: 3rem; margin-bottom: 1rem; opacity: 0.5; }
.coming-soon h3 { color: var(--white); margin-bottom: 0.5rem; }
.coming-soon p { font-size: 0.9rem; max-width: 28em; }
.photo-slots {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-top: 1.5rem;
}
.photo-slot {
  aspect-ratio: 4/3;
  border: 1px dashed rgba(255,255,255,0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.4);
  letter-spacing: 0.05em;
}

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(10, 18, 15, 0.92);
  align-items: center;
  justify-content: center;
  padding: 2rem;
}
.lightbox.open { display: flex; }
.lightbox img {
  max-width: 92vw;
  max-height: 88vh;
  object-fit: contain;
  box-shadow: 0 8px 40px rgba(0,0,0,0.4);
}
.lightbox-close {
  position: absolute;
  top: 1.25rem;
  right: 1.5rem;
  background: none;
  border: none;
  color: var(--white);
  font-size: 2rem;
  cursor: pointer;
  line-height: 1;
  opacity: 0.8;
}
.lightbox-close:hover { opacity: 1; }

/* Breadcrumb */
.breadcrumb {
  max-width: var(--max);
  margin: 0 auto;
  padding: 1rem 1.5rem 0;
  font-size: 0.8rem;
  color: var(--warm-gray);
}
.breadcrumb a { color: var(--sage); }

/* Responsive */
@media (max-width: 860px) {
  .property-grid,
  .about-grid,
  .detail-layout { grid-template-columns: 1fr; }
  .feature-list { grid-template-columns: 1fr; }
  .photo-slots { grid-template-columns: 1fr 1fr; }
  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--cream);
    flex-direction: column;
    padding: 1rem 1.5rem 1.5rem;
    border-bottom: 1px solid var(--warm-gray-light);
    gap: 1rem;
    align-items: flex-start;
  }
  .nav.open { display: flex; }
  .menu-btn { display: block; }
  .header-inner { position: relative; }
  .specs-card { position: static; }
  .hero { min-height: 58vh; }
  .gallery { grid-template-columns: 1fr; }
  .gallery figure:first-child { aspect-ratio: 4/3; }
}

@media (max-width: 480px) {
  .photo-slots { grid-template-columns: 1fr; }
  .section { padding: 3rem 1.25rem; }
}