/* ==========================================================
   Ocean Lagoon Villa Tsubaki — Base Stylesheet
   Concept: simple / hideaway / ocean view
   ========================================================== */

:root {
  --color-bg: #fbfaf7;           /* warm off-white */
  --color-text: #2a2a2a;         /* ink */
  --color-muted: #6b6b6b;
  --color-accent: #2f5d6b;       /* deep ocean */
  --color-accent-hover: #1e4450;
  --color-line: #e6e2d9;
  --font-jp: "Noto Serif JP", "Hiragino Mincho ProN", "游明朝", "Yu Mincho", serif;
  --font-en: "Cormorant Garamond", "Noto Serif JP", Georgia, serif;
  --font-sans: "Noto Sans JP", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --max-width: 1200px;
  --section-pad: clamp(4rem, 8vw, 8rem);
}

/* Reset */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-jp);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.8;
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }

/* Language toggle — show elements based on current <html lang> */
html[lang="ja"] [data-lang="en"] { display: none !important; }
html[lang="en"] [data-lang="ja"] { display: none !important; }
html[lang="en"] body { font-family: var(--font-en); letter-spacing: 0.01em; }

/* Header */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 50;
  padding: 1.25rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(251, 250, 247, 0);
  transition: background-color .3s ease, box-shadow .3s ease;
}
.site-header.is-scrolled {
  background: rgba(251, 250, 247, 0.96);
  box-shadow: 0 1px 0 var(--color-line);
}
.site-header .brand {
  font-family: var(--font-en);
  font-size: 1.05rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}
.site-header .brand .brand-jp {
  display: block;
  font-family: var(--font-jp);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: var(--color-muted);
  margin-top: 2px;
}
.nav {
  display: flex;
  gap: 1.5rem;
  align-items: center;
  font-size: 0.8rem;
  letter-spacing: 0.15em;
}
.nav a {
  color: var(--color-text);
  position: relative;
  padding: 4px 0;
}
.nav a:hover { color: var(--color-accent); }
.nav a.is-active::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: -2px;
  height: 1px; background: var(--color-accent);
}
.lang-toggle {
  display: inline-flex;
  gap: 0.2rem;
  align-items: center;
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  border: 1px solid var(--color-line);
  border-radius: 999px;
  padding: 3px 4px;
  background: #fff;
}
.lang-toggle button {
  background: none; border: none;
  padding: 4px 10px;
  color: var(--color-muted);
  border-radius: 999px;
}
.lang-toggle button.is-active {
  background: var(--color-accent);
  color: #fff;
}

/* Mobile nav */
.nav-toggle {
  display: none;
  background: none; border: none;
  width: 32px; height: 32px;
  position: relative;
}
.nav-toggle span {
  position: absolute; left: 4px; right: 4px; height: 1px;
  background: var(--color-text);
  transition: transform .3s ease, opacity .3s ease;
}
.nav-toggle span:nth-child(1) { top: 10px; }
.nav-toggle span:nth-child(2) { top: 16px; }
.nav-toggle span:nth-child(3) { top: 22px; }
.nav-toggle.is-open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 860px) {
  .nav-toggle { display: block; }
  .nav {
    position: fixed;
    inset: 0;
    background: var(--color-bg);
    flex-direction: column;
    justify-content: center;
    gap: 2.5rem;
    font-size: 1rem;
    transform: translateY(-100%);
    transition: transform .4s ease;
    z-index: 40;
  }
  .nav.is-open { transform: translateY(0); }
}

/* Hero */
.hero {
  position: relative;
  height: 100vh;        /* fallback for older browsers */
  height: 100dvh;       /* full viewport on mobile, accounting for address bar */
  min-height: 640px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  text-align: center;
}
.hero__bg {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(0,0,0,0.15), rgba(0,0,0,0.35)),
              url("../images/hero.jpg") center/cover no-repeat,
              linear-gradient(180deg, #3b7787 0%, #1e4450 100%);
  transform: scale(1.04);
  animation: heroZoom 18s ease-in-out infinite alternate;
}
@keyframes heroZoom {
  from { transform: scale(1.04); }
  to   { transform: scale(1.12); }
}
.hero__content {
  position: relative;
  z-index: 2;
  padding: 0 1.5rem;
  max-width: 820px;
}
.hero__eyebrow {
  font-family: var(--font-en);
  font-size: 0.8rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  opacity: 0.85;
  margin-bottom: 1.5rem;
}
.hero__title {
  font-size: clamp(1.8rem, 4.4vw, 2.9rem);
  font-weight: 300;
  line-height: 1.6;
  letter-spacing: 0.12em;
  margin: 0 0 1rem;
}
.hero__subtitle {
  font-size: clamp(0.9rem, 1.5vw, 1rem);
  letter-spacing: 0.2em;
  opacity: 0.9;
  margin: 0;
}
.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  font-family: var(--font-en);
  font-size: 0.7rem;
  letter-spacing: 0.3em;
  color: rgba(255,255,255,0.8);
  z-index: 2;
}
.hero__scroll::after {
  content: "";
  display: block;
  width: 1px; height: 40px;
  margin: 10px auto 0;
  background: rgba(255,255,255,0.5);
  animation: scrollLine 2s ease-in-out infinite;
}
@keyframes scrollLine {
  0%, 100% { transform: scaleY(0.3); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
}

/* Layout */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}
.section { padding: var(--section-pad) 0; }
.section--narrow .container { max-width: 820px; }
.section--dark {
  background: #f3efe8;
}

.section-label {
  font-family: var(--font-en);
  font-size: 0.75rem;
  letter-spacing: 0.4em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 1rem;
  display: block;
}
.section-title {
  font-size: clamp(1.4rem, 2.4vw, 1.9rem);
  font-weight: 300;
  letter-spacing: 0.1em;
  line-height: 1.5;
  margin: 0 0 2rem;
}
.lede {
  font-size: 1rem;
  line-height: 2.1;
  color: var(--color-text);
  max-width: 680px;
}

/* Two-column feature block */
.feature {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
  margin: 4rem 0;
}
.feature--reverse { direction: rtl; }
.feature--reverse > * { direction: ltr; }
.feature__media img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  background: var(--color-line);
}
.feature__text h3 {
  font-size: 1.25rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  margin: 0 0 1rem;
}
.feature__text p { margin: 0 0 1rem; color: var(--color-muted); }

@media (max-width: 720px) {
  .feature { grid-template-columns: 1fr; }
  .feature--reverse { direction: ltr; }
}

/* Gallery */
.gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.gallery a {
  position: relative;
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--color-line);
}
.gallery img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .6s ease;
}
.gallery a:hover img { transform: scale(1.05); }

@media (max-width: 720px) {
  .gallery { grid-template-columns: repeat(2, 1fr); }
}

/* Gallery strip (homepage, horizontal band of 4 photos) */
.gallery-strip {
  padding: 0;
}
.gallery-strip__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
}
.gallery-strip__grid a {
  position: relative;
  aspect-ratio: 3 / 4;
  overflow: hidden;
  background: var(--color-line);
  display: block;
}
.gallery-strip__grid img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform .8s ease;
}
.gallery-strip__grid a:hover img { transform: scale(1.06); }

@media (max-width: 720px) {
  .gallery-strip__grid { grid-template-columns: repeat(2, 1fr); }
  .gallery-strip__grid a { aspect-ratio: 1 / 1; }
}

/* Day teaser (homepage, 3 day-cards linking to stay.html) */
.day-teaser {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 3rem;
}
.day-card {
  display: block;
  padding: 2.4rem 1.8rem;
  background: #fff;
  border: 1px solid var(--color-line);
  text-align: left;
  color: inherit;
  transition: transform .3s ease, border-color .3s ease, box-shadow .3s ease;
}
.day-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent);
  box-shadow: 0 12px 28px rgba(0,0,0,0.06);
}
.day-card__num {
  font-family: var(--font-en);
  font-size: 0.75rem;
  letter-spacing: 0.35em;
  color: var(--color-accent);
  text-transform: uppercase;
  display: block;
  margin-bottom: 0.8rem;
}
.day-card__title {
  font-family: var(--font-serif-jp);
  font-size: 1.15rem;
  font-weight: 400;
  line-height: 1.6;
  margin: 0 0 0.8rem;
  letter-spacing: 0.05em;
}
.day-card__body {
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--color-muted);
  margin: 0 0 1.2rem;
}
.day-card__more {
  font-family: var(--font-en);
  font-size: 0.75rem;
  letter-spacing: 0.25em;
  color: var(--color-accent);
  text-transform: uppercase;
}

@media (max-width: 720px) {
  .day-teaser {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  .day-card { padding: 1.8rem 1.4rem; }
}

/* CTA button */
.btn {
  display: inline-block;
  padding: 14px 36px;
  font-size: 0.85rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: #fff;
  background: var(--color-accent);
  border: 1px solid var(--color-accent);
  border-radius: 0;
  transition: background-color .25s ease, color .25s ease;
}
.btn:hover { background: var(--color-accent-hover); border-color: var(--color-accent-hover); }
.btn--ghost {
  background: transparent;
  color: var(--color-accent);
}
.btn--ghost:hover { background: var(--color-accent); color: #fff; }
.btn--large { padding: 18px 48px; font-size: 0.9rem; }

/* Info table */
.info-table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
}
.info-table th, .info-table td {
  text-align: left;
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-line);
  vertical-align: top;
  font-weight: 400;
  font-size: 0.95rem;
}
.info-table th {
  width: 200px;
  color: var(--color-muted);
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  padding-right: 2rem;
}
@media (max-width: 600px) {
  .info-table th, .info-table td { display: block; padding: 0.5rem 0; border: none; }
  .info-table th { padding-top: 1rem; border-top: 1px solid var(--color-line); }
  .info-table tr:first-child th { border-top: none; }
}

/* Area cards */
.area-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 2rem;
  margin: 2rem 0;
}
.area-card img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  background: var(--color-line);
  margin-bottom: 1rem;
}
.area-card h4 {
  font-size: 1.05rem;
  font-weight: 400;
  letter-spacing: 0.05em;
  margin: 0 0 .5rem;
}
.area-card p {
  font-size: 0.9rem;
  color: var(--color-muted);
  margin: 0 0 0.25rem;
}
.area-card .distance {
  font-family: var(--font-en);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: var(--color-accent);
}
.area-card .area-link {
  display: block;
  margin-top: 0.5rem;
  font-family: var(--font-en);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px dashed transparent;
  width: fit-content;
  padding-bottom: 1px;
  transition: border-color .2s ease;
}
.area-card .area-link + .area-link {
  margin-top: 0.25rem;
}
.area-card .area-link:hover {
  border-bottom-color: var(--color-accent);
}
.area-subhead {
  font-family: var(--font-serif-jp);
  font-size: 1.2rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  margin: 3.5rem 0 0.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-line);
  color: var(--color-fg);
}

/* Reserve CTA */
.reserve-hero {
  padding: 8rem 0 4rem;
  text-align: center;
}
.reserve-steps {
  list-style: none;
  padding: 0;
  max-width: 640px;
  margin: 3rem auto;
  counter-reset: step;
}
.reserve-steps li {
  counter-increment: step;
  padding: 1.5rem 0 1.5rem 3.5rem;
  border-bottom: 1px solid var(--color-line);
  position: relative;
}
.reserve-steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute; left: 0; top: 1.5rem;
  font-family: var(--font-en);
  font-size: 1rem;
  letter-spacing: 0.15em;
  color: var(--color-accent);
}

/* Footer */
.site-footer {
  padding: 4rem 2rem 2rem;
  background: #1e2a2e;
  color: #cfd8dc;
  font-size: 0.85rem;
}
.site-footer .container {
  display: grid;
  grid-template-columns: 1.2fr 1fr 1fr 1fr;
  gap: 3rem;
}
.site-footer h5 {
  font-family: var(--font-en);
  font-size: 0.75rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: #fff;
  margin: 0 0 1rem;
}
.site-footer a:hover { color: #fff; }
.site-footer .copyright {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  text-align: center;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  color: #7a8a8f;
}
@media (max-width: 720px) {
  .site-footer .container { grid-template-columns: 1fr; gap: 2rem; }
}

/* Fade-in on scroll */
.fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .9s ease, transform .9s ease;
}
.fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}
