/* Sample G3 CSS: 湿原の宿 つるい山荘 (Villa Tsurui) */
:root {
  --bg: #0d131a;
  --surface: #141d27;
  --surface-card: rgba(20, 29, 39, 0.85);
  --ink: #f8fafc;
  --muted: #94a3b8;
  --dim: #64748b;
  --line: rgba(255, 255, 255, 0.08);
  --accent: #d4af37;        /* Champagne Gold */
  --accent-light: #f3e5ab;
  --font-serif: 'Noto Serif JP', 'Yu Mincho', serif;
  --font-sans: 'Outfit', 'Inter', -apple-system, sans-serif;
  --shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--ink);
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
}
.sample-bar {
  background: #000000;
  color: #cbd5e1;
  font-size: 13px;
  padding: 8px 16px;
  text-align: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}
.sample-bar a { color: var(--accent); margin-left: 12px; text-decoration: none; font-weight: 700; }
.wrap { max-width: 1140px; margin: 0 auto; padding: 0 28px; }

/* Header */
header {
  position: absolute;
  top: 36px;
  left: 0;
  width: 100%;
  z-index: 50;
}
.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 0;
}
.brand-logo {
  text-decoration: none;
  color: #ffffff;
}
.brand-logo b {
  font-family: var(--font-serif);
  font-size: 24px;
  letter-spacing: 0.15em;
  display: block;
}
.brand-logo small {
  font-family: var(--font-sans);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--accent);
  text-transform: uppercase;
}
nav.resort-nav { display: flex; gap: 26px; align-items: center; }
nav.resort-nav a {
  text-decoration: none;
  color: rgba(255, 255, 255, 0.85);
  font-size: 14px;
  letter-spacing: 0.1em;
  transition: color 0.2s;
}
nav.resort-nav a:hover, nav.resort-nav a.active { color: var(--accent); }
.btn-reserve-head {
  display: inline-flex;
  align-items: center;
  padding: 9px 22px;
  background: var(--accent);
  color: #0d131a !important;
  font-weight: 800;
  font-size: 13px;
  letter-spacing: 0.08em;
  border-radius: 2px;
  text-decoration: none;
}

/* Hero Section */
.hero {
  position: relative;
  height: 90vh;
  min-height: 600px;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  padding-bottom: 90px;
}
.hero-bg-img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: 0;
  filter: brightness(0.85);
}
.hero-gradient {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, rgba(13, 19, 26, 0.3) 0%, rgba(13, 19, 26, 0.85) 100%);
  z-index: 1;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 720px;
}
.hero-kicker {
  font-family: var(--font-serif);
  font-size: 14px;
  letter-spacing: 0.25em;
  color: var(--accent);
  display: block;
  margin-bottom: 16px;
}
.hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(34px, 5.2vw, 56px);
  font-weight: 400;
  line-height: 1.35;
  letter-spacing: 0.08em;
  margin-bottom: 22px;
  text-shadow: 0 4px 20px rgba(0,0,0,0.6);
}
.hero p {
  font-size: 16px;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.9;
  margin-bottom: 28px;
}

/* Common Section */
section { padding: 90px 0; }
section.alt { background: var(--surface); }
.section-tag {
  font-family: var(--font-serif);
  font-size: 13px;
  letter-spacing: 0.25em;
  color: var(--accent);
  text-transform: uppercase;
  display: block;
  margin-bottom: 12px;
}
.section-heading {
  font-family: var(--font-serif);
  font-size: clamp(28px, 3.8vw, 42px);
  font-weight: 400;
  letter-spacing: 0.06em;
  line-height: 1.35;
  margin-bottom: 20px;
}
.section-lead {
  font-size: 16px;
  color: var(--muted);
  max-width: 640px;
  line-height: 1.9;
  margin-bottom: 48px;
}

/* Feature 2-Column Split */
.split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
}
.split-text h3 {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 400;
  margin-bottom: 18px;
  line-height: 1.45;
}
.split-text p {
  font-size: 15.5px;
  color: var(--muted);
  line-height: 1.9;
  margin-bottom: 22px;
}
.split-img img {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  border-radius: 6px;
  box-shadow: var(--shadow);
  display: block;
}

/* Card Showcase Grid */
.resort-grid3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}
.resort-card {
  background: var(--surface-card);
  border: 1px solid var(--line);
  border-radius: 6px;
  overflow: hidden;
  box-shadow: var(--shadow);
}
.resort-card img {
  width: 100%;
  aspect-ratio: 16 / 11;
  object-fit: cover;
  display: block;
}
.card-content { padding: 26px 22px; }
.card-content h3 {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 400;
  margin-bottom: 10px;
}
.card-content p {
  font-size: 14px;
  color: var(--muted);
  line-height: 1.8;
  margin-bottom: 16px;
}
.card-link {
  font-size: 13.5px;
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

/* Seasonal Calendar (Asobu) */
.calendar-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.cal-box {
  background: var(--surface-card);
  border: 1px solid var(--line);
  padding: 24px 20px;
  border-radius: 6px;
}
.cal-season {
  font-family: var(--font-serif);
  font-size: 22px;
  color: var(--accent);
  display: block;
  margin-bottom: 8px;
}
.cal-meta {
  font-size: 12px;
  color: var(--dim);
  display: block;
  margin-bottom: 12px;
}
.cal-desc { font-size: 13.5px; color: var(--muted); line-height: 1.75; }

/* Direct Booking Banner */
.booking-banner {
  background: linear-gradient(135deg, #182433 0%, #101924 100%);
  border: 1px solid rgba(212, 175, 55, 0.3);
  border-radius: 8px;
  padding: 60px 48px;
  text-align: center;
}
.booking-banner h2 {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 400;
  margin-bottom: 16px;
}
.booking-banner p {
  font-size: 16px;
  color: var(--muted);
  max-width: 580px;
  margin: 0 auto 32px;
}
.btn-gold-large {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--accent);
  color: #0d131a;
  font-weight: 800;
  font-size: 16px;
  padding: 15px 36px;
  border-radius: 2px;
  text-decoration: none;
  letter-spacing: 0.1em;
}

/* Footer */
footer {
  background: #080c10;
  border-top: 1px solid var(--line);
  padding: 60px 0;
  font-size: 13.5px;
  color: var(--dim);
}
.footer-logo {
  font-family: var(--font-serif);
  font-size: 22px;
  color: #ffffff;
  margin-bottom: 10px;
}

@media (max-width: 900px) {
  .split-grid, .resort-grid3 { grid-template-columns: 1fr; }
  .calendar-grid { grid-template-columns: repeat(2, 1fr); }
  nav.resort-nav { display: none; }
  .hero { height: auto; padding: 160px 0 60px; }
}