/* Yui Villas Samui — warm coastal modern */
:root {
  --teal-900: #08353c;
  --teal-800: #0a4550;
  --teal-700: #0d5c6a;
  --teal-600: #127484;
  --teal-500: #1a8a9c;
  --teal-100: #e6f3f5;
  --sand-50: #fbf7f1;
  --sand-100: #f5ede0;
  --sand-200: #e8d5b7;
  --sand-300: #d4b896;
  --sand-700: #8a6d4a;
  --ink: #1a2428;
  --ink-soft: #4a5559;
  --white: #ffffff;
  --radius: 14px;
  --radius-lg: 22px;
  --shadow: 0 10px 40px rgba(8, 53, 60, 0.12);
  --shadow-sm: 0 4px 16px rgba(8, 53, 60, 0.08);
  --font: "DM Sans", system-ui, -apple-system, sans-serif;
  --max: 1120px;
  --header-h: 72px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--sand-50);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--teal-700); text-decoration: none; }
a:hover { color: var(--teal-500); }
h1, h2, h3 { line-height: 1.2; font-weight: 600; letter-spacing: -0.02em; margin: 0 0 0.6em; }
p { margin: 0 0 1em; }
ul { margin: 0; padding: 0; list-style: none; }

.container { width: min(100% - 2rem, var(--max)); margin-inline: auto; }
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); border: 0;
}

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(251, 247, 241, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(8, 53, 60, 0.08);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: var(--header-h); gap: 1rem;
}
.logo {
  display: flex; flex-direction: column; line-height: 1;
  color: var(--teal-900); text-decoration: none;
}
.logo:hover { color: var(--teal-700); }
.logo-yui {
  font-size: 1.55rem; font-weight: 700; letter-spacing: 0.18em;
}
.logo-sub {
  font-size: 0.68rem; font-weight: 500; letter-spacing: 0.22em;
  text-transform: uppercase; color: var(--sand-700); margin-top: 0.25rem;
}
.nav { display: none; gap: 1.75rem; align-items: center; }
.nav a {
  color: var(--ink-soft); font-size: 0.95rem; font-weight: 500;
}
.nav a:hover, .nav a[aria-current="page"] { color: var(--teal-700); }
.nav-cta {
  background: var(--teal-700) !important; color: var(--white) !important;
  padding: 0.55rem 1rem; border-radius: 999px; font-size: 0.875rem !important;
}
.nav-cta:hover { background: var(--teal-600) !important; }
.menu-btn {
  display: inline-flex; align-items: center; justify-content: center;
  width: 44px; height: 44px; border: 1px solid rgba(8,53,60,0.15);
  border-radius: 10px; background: var(--white); cursor: pointer;
}
.menu-btn span {
  display: block; width: 18px; height: 2px; background: var(--teal-800);
  position: relative;
}
.menu-btn span::before, .menu-btn span::after {
  content: ""; position: absolute; left: 0; width: 18px; height: 2px;
  background: var(--teal-800);
}
.menu-btn span::before { top: -6px; }
.menu-btn span::after { top: 6px; }
.mobile-nav {
  display: none; flex-direction: column; gap: 0.25rem;
  padding: 0.5rem 0 1.25rem; border-top: 1px solid rgba(8,53,60,0.08);
}
.mobile-nav.open { display: flex; }
.mobile-nav a {
  padding: 0.85rem 0.25rem; color: var(--ink); font-weight: 500;
  border-bottom: 1px solid rgba(8,53,60,0.06);
}
.mobile-nav a.nav-cta {
  text-align: center; margin-top: 0.75rem; border: none;
}

@media (min-width: 860px) {
  .nav { display: flex; }
  .menu-btn { display: none; }
}

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  padding: 0.85rem 1.35rem; border-radius: 999px; font-weight: 600;
  font-size: 0.95rem; border: 2px solid transparent; cursor: pointer;
  transition: transform 0.15s ease, background 0.15s ease, color 0.15s ease;
  text-decoration: none; font-family: inherit;
}
.btn:hover { transform: translateY(-1px); }
.btn-primary { background: var(--teal-700); color: var(--white); }
.btn-primary:hover { background: var(--teal-600); color: var(--white); }
.btn-secondary {
  background: transparent; color: var(--teal-800);
  border-color: rgba(13, 92, 106, 0.35);
}
.btn-secondary:hover { background: var(--teal-100); color: var(--teal-800); }
.btn-whatsapp { background: #128C7E; color: var(--white); }
.btn-whatsapp:hover { background: #0e7a6e; color: var(--white); }
.btn-light { background: var(--white); color: var(--teal-800); }
.btn-light:hover { background: var(--sand-100); color: var(--teal-900); }
.btn-row { display: flex; flex-wrap: wrap; gap: 0.75rem; }

/* Hero */
.hero {
  position: relative; min-height: clamp(420px, 72vh, 640px);
  display: grid; align-items: end; color: var(--white);
  overflow: hidden;
}
.hero-media {
  position: absolute; inset: 0;
}
.hero-media img {
  width: 100%; height: 100%; object-fit: cover;
}
.hero-media::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(
    180deg,
    rgba(8, 53, 60, 0.25) 0%,
    rgba(8, 53, 60, 0.55) 45%,
    rgba(8, 53, 60, 0.88) 100%
  );
}
.hero-content {
  position: relative; z-index: 1;
  padding: 3.5rem 0 3rem;
}
.eyebrow {
  display: inline-block; font-size: 0.78rem; font-weight: 600;
  letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--sand-200); margin-bottom: 0.85rem;
}
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.35rem);
  max-width: 14ch; margin-bottom: 0.75rem; color: var(--white);
}
.hero-lead {
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  color: rgba(255,255,255,0.9); max-width: 36ch; margin-bottom: 1.5rem;
}
.hero-meta {
  display: flex; flex-wrap: wrap; gap: 0.5rem 1.25rem;
  color: var(--sand-200); font-size: 0.92rem; margin-bottom: 1.75rem;
}
.hero-meta span::before {
  content: "·"; margin-right: 1.25rem; opacity: 0.5;
}
.hero-meta span:first-child::before { content: none; margin: 0; }

/* Sections */
.section { padding: 4.5rem 0; }
.section-tight { padding: 3rem 0; }
.section-sand { background: var(--sand-100); }
.section-teal {
  background: linear-gradient(160deg, var(--teal-800), var(--teal-900));
  color: var(--white);
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.1rem); color: var(--teal-900);
}
.section-lead {
  color: var(--ink-soft); max-width: 52ch; font-size: 1.05rem;
}
.section-teal .section-title { color: var(--white); }
.section-teal .section-lead { color: rgba(255,255,255,0.82); }
.section-head { margin-bottom: 2rem; }

/* Featured card */
.villa-card {
  display: grid; gap: 0; background: var(--white);
  border-radius: var(--radius-lg); overflow: hidden;
  box-shadow: var(--shadow);
}
.villa-card-media { aspect-ratio: 16/11; overflow: hidden; }
.villa-card-media img { width: 100%; height: 100%; object-fit: cover; }
.villa-card-body { padding: 1.75rem 1.5rem 2rem; }
.villa-card-body h2 { font-size: 1.45rem; color: var(--teal-900); }
.facts {
  display: flex; flex-wrap: wrap; gap: 0.5rem; margin: 1rem 0 1.25rem;
}
.fact {
  background: var(--teal-100); color: var(--teal-800);
  font-size: 0.82rem; font-weight: 600; padding: 0.35rem 0.75rem;
  border-radius: 999px;
}
@media (min-width: 800px) {
  .villa-card { grid-template-columns: 1.15fr 1fr; }
  .villa-card-media { aspect-ratio: auto; min-height: 100%; }
  .villa-card-body { padding: 2.5rem; display: flex; flex-direction: column; justify-content: center; }
}

/* Why / features */
.feature-grid {
  display: grid; gap: 1.25rem;
  grid-template-columns: 1fr;
}
@media (min-width: 700px) {
  .feature-grid { grid-template-columns: repeat(3, 1fr); }
}
.feature {
  background: var(--white); border-radius: var(--radius);
  padding: 1.5rem; box-shadow: var(--shadow-sm);
  border: 1px solid rgba(8,53,60,0.06);
}
.feature-icon {
  width: 42px; height: 42px; border-radius: 12px;
  background: var(--teal-100); color: var(--teal-700);
  display: grid; place-items: center; margin-bottom: 1rem;
  font-size: 1.2rem;
}
.feature h3 { font-size: 1.1rem; color: var(--teal-900); margin-bottom: 0.4rem; }
.feature p { color: var(--ink-soft); font-size: 0.95rem; margin: 0; }

/* CTA band */
.cta-band { text-align: center; }
.cta-band .section-lead { margin-inline: auto; }

/* Page hero (inner pages) */
.page-hero {
  background: linear-gradient(135deg, var(--teal-800), var(--teal-900));
  color: var(--white); padding: 3.25rem 0 2.75rem;
}
.page-hero h1 { color: var(--white); font-size: clamp(1.8rem, 4vw, 2.6rem); }
.page-hero p { color: rgba(255,255,255,0.85); max-width: 48ch; margin: 0; }

/* Gallery */
.gallery {
  display: grid; gap: 0.75rem;
  grid-template-columns: repeat(2, 1fr);
}
.gallery figure {
  margin: 0; border-radius: 12px; overflow: hidden;
  background: var(--sand-200); aspect-ratio: 1;
  cursor: pointer; position: relative;
}
.gallery figure img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.35s ease;
}
.gallery figure:hover img { transform: scale(1.04); }
.gallery figure.wide { grid-column: span 2; aspect-ratio: 16/9; }
@media (min-width: 700px) {
  .gallery {
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
  }
  .gallery figure.wide { grid-column: span 2; aspect-ratio: 16/10; }
  .gallery figure.tall { grid-row: span 2; aspect-ratio: auto; height: 100%; }
}

/* Lightbox */
.lightbox {
  position: fixed; inset: 0; z-index: 100;
  background: rgba(8, 53, 60, 0.92);
  display: none; align-items: center; justify-content: center;
  padding: 1.5rem;
}
.lightbox.open { display: flex; }
.lightbox img {
  max-width: min(96vw, 1100px); max-height: 88vh;
  object-fit: contain; border-radius: 8px;
}
.lightbox-close {
  position: absolute; top: 1rem; right: 1rem;
  width: 44px; height: 44px; border-radius: 999px;
  border: none; background: rgba(255,255,255,0.15); color: white;
  font-size: 1.5rem; cursor: pointer;
}
.lightbox-nav {
  position: absolute; top: 50%; transform: translateY(-50%);
  width: 48px; height: 48px; border-radius: 999px; border: none;
  background: rgba(255,255,255,0.12); color: white; font-size: 1.5rem;
  cursor: pointer;
}
.lightbox-prev { left: 1rem; }
.lightbox-next { right: 1rem; }

/* Detail layout */
.detail-grid {
  display: grid; gap: 2.5rem;
}
@media (min-width: 900px) {
  .detail-grid {
    grid-template-columns: 1.4fr 0.9fr;
    align-items: start;
  }
}
.detail-panel {
  background: var(--white); border-radius: var(--radius-lg);
  padding: 1.75rem; box-shadow: var(--shadow-sm);
  border: 1px solid rgba(8,53,60,0.06);
}
.detail-panel h2 { font-size: 1.25rem; color: var(--teal-900); }
.detail-panel + .detail-panel { margin-top: 1rem; }
.amenity-list li {
  display: flex; gap: 0.75rem; align-items: flex-start;
  padding: 0.65rem 0; border-bottom: 1px solid rgba(8,53,60,0.06);
  color: var(--ink-soft);
}
.amenity-list li:last-child { border-bottom: none; }
.amenity-list .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--teal-500); margin-top: 0.55rem; flex-shrink: 0;
}
.sticky-enquire {
  position: sticky; top: calc(var(--header-h) + 1rem);
}
.rate-note {
  background: var(--sand-100); border-radius: 12px;
  padding: 1rem 1.1rem; margin: 1rem 0;
  font-size: 0.95rem; color: var(--ink-soft);
}
.placeholder-note {
  font-size: 0.78rem; color: var(--sand-700);
  background: #fff8e8; border: 1px dashed var(--sand-300);
  padding: 0.55rem 0.75rem; border-radius: 8px; margin-top: 0.75rem;
}

/* About */
.about-grid {
  display: grid; gap: 2rem;
}
@media (min-width: 800px) {
  .about-grid { grid-template-columns: 1.1fr 0.9fr; align-items: center; }
}
.about-photo {
  border-radius: var(--radius-lg); overflow: hidden;
  aspect-ratio: 4/3; box-shadow: var(--shadow);
}
.about-photo img { width: 100%; height: 100%; object-fit: cover; }

/* Contact */
.contact-grid {
  display: grid; gap: 1.25rem;
}
@media (min-width: 700px) {
  .contact-grid { grid-template-columns: repeat(2, 1fr); }
}
.contact-card {
  background: var(--white); border-radius: var(--radius-lg);
  padding: 2rem 1.75rem; box-shadow: var(--shadow-sm);
  border: 1px solid rgba(8,53,60,0.06);
}
.contact-card.primary {
  background: linear-gradient(160deg, var(--teal-700), var(--teal-900));
  color: var(--white); border: none;
}
.contact-card.primary h2 { color: var(--white); }
.contact-card.primary p { color: rgba(255,255,255,0.85); }
.contact-card h2 { font-size: 1.3rem; }
.phone-display {
  font-size: 1.45rem; font-weight: 700; letter-spacing: 0.02em;
  margin: 0.5rem 0 1.25rem; color: inherit;
}

/* Footer */
.site-footer {
  background: var(--teal-900); color: rgba(255,255,255,0.78);
  padding: 3rem 0 2rem; margin-top: 0;
}
.footer-grid {
  display: grid; gap: 2rem;
}
@media (min-width: 700px) {
  .footer-grid { grid-template-columns: 1.4fr 1fr 1fr; }
}
.footer-brand .logo { color: var(--white); margin-bottom: 0.75rem; }
.footer-brand .logo-sub { color: var(--sand-300); }
.site-footer h3 {
  color: var(--sand-200); font-size: 0.78rem; letter-spacing: 0.14em;
  text-transform: uppercase; margin-bottom: 0.9rem;
}
.site-footer a { color: rgba(255,255,255,0.85); }
.site-footer a:hover { color: var(--white); }
.footer-links { display: flex; flex-direction: column; gap: 0.55rem; }
.footer-bottom {
  margin-top: 2.5rem; padding-top: 1.5rem;
  border-top: 1px solid rgba(255,255,255,0.1);
  font-size: 0.85rem; display: flex; flex-wrap: wrap;
  gap: 0.75rem; justify-content: space-between;
}

/* Prose helpers */
.prose p { color: var(--ink-soft); }
.prose strong { color: var(--ink); font-weight: 600; }
.divider {
  height: 1px; background: rgba(8,53,60,0.08); margin: 2rem 0;
}