/* ============================================================
   M3M Billionaire's Block — Stylesheet
   Palette: warm cream / champagne / charcoal, editorial serif + clean sans
   ============================================================ */

:root {
  --cream: #f6efe4;
  --champagne: #d9c3a3;
  --champagne-dark: #b89b72;
  --charcoal: #1c1a17;
  --ink: #2b2823;
  --muted: #6f6a60;
  --white: #ffffff;
  --line: #e6dcc8;
  --radius: 2px;
  --serif: 'Cormorant Garamond', Georgia, serif;
  --sans: 'Jost', -apple-system, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 600;
  color: var(--charcoal);
  letter-spacing: 0.01em;
  margin: 0 0 0.5em;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(255,255,255,0.96);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--line);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 76px; }
.logo { font-family: var(--serif); font-size: 22px; font-weight: 700; letter-spacing: 0.02em; color: var(--charcoal); }
.logo span { font-weight: 400; color: var(--champagne-dark); font-size: 0.6em; display: block; text-transform: uppercase; letter-spacing: 0.15em; margin-top: -2px; }
.main-nav { display: flex; gap: 32px; }
.main-nav a { font-size: 14px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--ink); padding: 6px 0; border-bottom: 1px solid transparent; }
.main-nav a:hover { border-color: var(--champagne-dark); }
.header-cta { padding: 12px 24px; font-size: 13px; }
.nav-toggle { display: none; background: none; border: none; font-size: 24px; cursor: pointer; }

.btn {
  display: inline-block; padding: 14px 30px; font-size: 13px; text-transform: uppercase;
  letter-spacing: 0.12em; border: 1px solid var(--charcoal); border-radius: var(--radius);
  cursor: pointer; transition: all 0.25s ease; text-align: center;
}
.btn-primary { background: var(--charcoal); color: var(--white); }
.btn-primary:hover { background: var(--champagne-dark); border-color: var(--champagne-dark); }
.btn-outline { background: transparent; color: var(--charcoal); }
.btn-outline:hover { background: var(--charcoal); color: var(--white); }

/* ---------- Hero ---------- */
.hero {
  position: relative; min-height: 78vh; display: flex; align-items: center;
  background: linear-gradient(180deg, rgba(28,26,23,0.55), rgba(28,26,23,0.35)), var(--charcoal);
  background-size: cover; background-position: center;
  color: var(--white); text-align: center;
}
.hero-inner { max-width: 780px; margin: 0 auto; padding: 0 24px; }
.hero-eyebrow { text-transform: uppercase; letter-spacing: 0.25em; font-size: 13px; color: var(--champagne); margin-bottom: 18px; }
.hero h1 { font-size: clamp(36px, 6vw, 62px); color: var(--white); line-height: 1.15; }
.hero p { font-size: 18px; color: #e9e2d3; max-width: 560px; margin: 20px auto 32px; }
.hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
.hero-actions .btn-outline { border-color: var(--white); color: var(--white); }
.hero-actions .btn-outline:hover { background: var(--white); color: var(--charcoal); }

/* ---------- Section basics ---------- */
.section { padding: 90px 0; }
.section-alt { background: var(--cream); }
.section-head { text-align: center; max-width: 620px; margin: 0 auto 52px; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.2em; font-size: 12px; color: var(--champagne-dark); margin-bottom: 12px; }
.section-head h2 { font-size: clamp(28px, 4vw, 42px); }
.section-head p { color: var(--muted); font-size: 16px; margin-top: 14px; }

/* ---------- Grids / cards ---------- */
.grid { display: grid; gap: 32px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-2 { grid-template-columns: repeat(2, 1fr); }

.card {
  border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden;
  background: var(--white); transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.card:hover { transform: translateY(-4px); box-shadow: 0 20px 40px rgba(28,26,23,0.08); }
.card-media { position: relative; aspect-ratio: 4/3; overflow: hidden; background: var(--champagne); }
.card-media img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.card:hover .card-media img { transform: scale(1.06); }
.card-badge {
  position: absolute; top: 14px; left: 14px; background: var(--charcoal); color: var(--white);
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.1em; padding: 6px 12px; border-radius: var(--radius);
}
.card-body { padding: 22px; }
.card-dev { font-size: 12px; text-transform: uppercase; letter-spacing: 0.1em; color: var(--champagne-dark); margin-bottom: 6px; }
.card-body h3 { font-size: 21px; margin-bottom: 8px; }
.card-meta { display: flex; gap: 18px; font-size: 13px; color: var(--muted); margin: 12px 0; flex-wrap: wrap; }
.card-price { font-family: var(--serif); font-size: 20px; font-weight: 600; color: var(--charcoal); margin-top: 10px; }
.card-link { display: block; margin-top: 16px; font-size: 13px; text-transform: uppercase; letter-spacing: 0.08em; border-top: 1px solid var(--line); padding-top: 14px; }
.card-link:hover { color: var(--champagne-dark); }

/* Developer card */
.dev-card { text-align: center; padding: 40px 24px; border: 1px solid var(--line); }
.dev-card img { max-height: 60px; margin: 0 auto 20px; object-fit: contain; }
.dev-card h3 { font-size: 24px; }
.dev-card p.tagline { color: var(--champagne-dark); font-size: 14px; text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 16px; }

/* Blog card */
.blog-card .card-body { padding: 20px 22px 24px; }
.blog-meta { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 10px; }
.blog-card h3 { font-size: 20px; line-height: 1.35; }
.blog-card p { color: var(--muted); font-size: 14.5px; margin-top: 10px; }

/* ---------- Detail pages ---------- */
.detail-hero { background: var(--cream); padding: 60px 0 40px; border-bottom: 1px solid var(--line); }
.breadcrumb { font-size: 13px; color: var(--muted); margin-bottom: 18px; }
.breadcrumb a:hover { color: var(--champagne-dark); }
.detail-hero h1 { font-size: clamp(28px, 4vw, 44px); }
.detail-hero .subtitle { color: var(--muted); font-size: 16px; margin-top: 10px; }

.gallery { display: grid; grid-template-columns: 2fr 1fr; gap: 12px; margin: 40px 0; }
.gallery .main-img { aspect-ratio: 16/11; overflow: hidden; border-radius: var(--radius); }
.gallery .side-imgs { display: grid; grid-template-rows: 1fr 1fr; gap: 12px; }
.gallery .side-imgs > div { overflow: hidden; border-radius: var(--radius); }
.gallery img { width: 100%; height: 100%; object-fit: cover; }

.detail-layout { display: grid; grid-template-columns: 2fr 1fr; gap: 56px; margin-top: 20px; }
.spec-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px 32px; margin: 24px 0 32px; }
.spec-item { border-bottom: 1px solid var(--line); padding-bottom: 12px; }
.spec-item .label { font-size: 12px; text-transform: uppercase; letter-spacing: 0.08em; color: var(--muted); margin-bottom: 4px; }
.spec-item .value { font-family: var(--serif); font-size: 19px; font-weight: 600; }

.amenity-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 24px; list-style: none; padding: 0; margin: 20px 0; }
.amenity-list li { font-size: 14.5px; padding-left: 22px; position: relative; }
.amenity-list li::before { content: '—'; position: absolute; left: 0; color: var(--champagne-dark); }

.sidebar-card { background: var(--cream); border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; position: sticky; top: 100px; }
.sidebar-card .price-big { font-family: var(--serif); font-size: 28px; font-weight: 700; margin-bottom: 4px; }
.sidebar-card .price-note { font-size: 13px; color: var(--muted); margin-bottom: 24px; }
.form-field { margin-bottom: 14px; }
.form-field label { display: block; font-size: 12px; text-transform: uppercase; letter-spacing: 0.06em; margin-bottom: 6px; color: var(--muted); }
.form-field input, .form-field textarea, .form-field select {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: var(--radius);
  font-family: var(--sans); font-size: 14px; background: var(--white);
}
.form-field textarea { resize: vertical; min-height: 90px; }

/* ---------- Blog article ---------- */
.article-body { max-width: 760px; margin: 0 auto; font-size: 17px; }
.article-body img { border-radius: var(--radius); margin: 24px 0; }
.article-body h2 { margin-top: 36px; }
.article-body p { margin-bottom: 20px; color: var(--ink); }

/* ---------- Footer ---------- */
.site-footer { background: var(--charcoal); color: #cfc8b8; padding: 70px 0 0; }
.footer-inner { display: grid; grid-template-columns: 2fr repeat(3, 1fr); gap: 40px; padding-bottom: 50px; }
.footer-logo { color: var(--white); margin-bottom: 14px; }
.footer-logo span { color: var(--champagne); }
.footer-col h4 { color: var(--white); font-family: var(--sans); font-size: 13px; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 16px; }
.footer-col a { display: block; margin-bottom: 10px; font-size: 14px; color: #cfc8b8; }
.footer-col a:hover { color: var(--champagne); }
.footer-col p { font-size: 13.5px; color: #9c9686; }
.fine-print { font-size: 11.5px; line-height: 1.6; color: #7d7868; }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.08); padding: 20px 0; font-size: 13px; color: #8a8474; }

/* ---------- Sticky mobile CTA ---------- */
.sticky-cta { display: none; }

/* ---------- Misc ---------- */
.empty-state { text-align: center; padding: 60px 20px; color: var(--muted); }
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 40px; }
.pagination a, .pagination span { padding: 10px 16px; border: 1px solid var(--line); border-radius: var(--radius); font-size: 14px; }
.pagination a:hover { border-color: var(--champagne-dark); }
.pagination .active { background: var(--charcoal); color: var(--white); border-color: var(--charcoal); }

.filter-bar { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 40px; padding: 20px; background: var(--cream); border-radius: var(--radius); }
.filter-bar select, .filter-bar input { padding: 10px 14px; border: 1px solid var(--line); border-radius: var(--radius); font-family: var(--sans); font-size: 14px; }
.filter-bar button { margin-left: auto; }

.alert { padding: 14px 20px; border-radius: var(--radius); margin-bottom: 20px; font-size: 14px; }
.alert-success { background: #eaf3ea; color: #2e6b2e; border: 1px solid #cde3cd; }
.alert-error { background: #fbeaea; color: #a33; border: 1px solid #f2caca; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .main-nav { display: none; position: absolute; top: 76px; left: 0; right: 0; background: var(--white); flex-direction: column; padding: 16px 24px; border-bottom: 1px solid var(--line); }
  .main-nav.open { display: flex; }
  .nav-toggle { display: block; }
  .header-cta { display: none; }
  .grid-3, .grid-2 { grid-template-columns: 1fr; }
  .detail-layout { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; }
  .gallery { grid-template-columns: 1fr; }
  .amenity-list { grid-template-columns: 1fr; }
  .sticky-cta {
    display: flex; position: fixed; bottom: 0; left: 0; right: 0; z-index: 200;
  }
  .sticky-cta a { flex: 1; text-align: center; padding: 16px; font-size: 14px; text-transform: uppercase; letter-spacing: 0.06em; }
  .sticky-cta a:first-child { background: var(--charcoal); color: var(--white); }
  .sticky-cta a:last-child { background: var(--champagne-dark); color: var(--white); }
  body { padding-bottom: 56px; }
}
@media (max-width: 600px) {
  .footer-inner { grid-template-columns: 1fr; }
  .spec-grid { grid-template-columns: 1fr; }
}