/* ==========================================================================
   3RC Holding — Design tokens
   Palette drawn from the brand mark: brushed charcoal + polished copper.
   ========================================================================== */
:root {
  --charcoal-950: #131417;
  --charcoal-900: #1a1b1f;
  --charcoal-800: #232428;
  --charcoal-700: #313236;
  --line: rgba(243, 239, 231, 0.1);

  --ivory-100: #f3efe7;
  --ivory-200: #d8d3c8;
  --ivory-400: #9a958a;

  --copper-300: #d9a878;
  --copper-500: #b87a56;
  --copper-700: #8c5a3c;
  --bronze-900: #4a2f20;

  --font-display: 'Fraunces', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --container: 1180px;
  --radius: 2px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--charcoal-950);
  color: var(--ivory-100);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 32px;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0;
  color: var(--ivory-100);
}

.eyebrow {
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--copper-300);
  font-weight: 600;
}

/* ---- Header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(19, 20, 23, 0.88);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand img { height: 44px; width: auto; }

.brand-text {
  font-family: var(--font-display);
  font-size: 20px;
  letter-spacing: 0.02em;
  color: var(--ivory-100);
}

.brand-text span { color: var(--copper-500); }

.main-nav {
  display: flex;
  gap: 36px;
  font-size: 14px;
  letter-spacing: 0.03em;
}

.main-nav a {
  color: var(--ivory-200);
  transition: color 0.2s ease;
}
.main-nav a:hover { color: var(--copper-300); }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 30px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.25s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--copper-300), var(--copper-700));
  color: var(--charcoal-950);
}
.btn-primary:hover { filter: brightness(1.08); transform: translateY(-1px); }

.btn-outline {
  background: transparent;
  border-color: var(--copper-500);
  color: var(--copper-300);
}
.btn-outline:hover { background: rgba(184, 122, 86, 0.1); }

/* ---- Hero (listing page) ---- */
.hero {
  padding: 96px 0 72px;
  border-bottom: 1px solid var(--line);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(560px 320px at 82% 12%, rgba(184, 122, 86, 0.14), transparent 70%);
  pointer-events: none;
}

.hero h1 {
  font-size: clamp(38px, 5vw, 60px);
  line-height: 1.05;
  max-width: 15ch;
  margin-top: 18px;
}

.hero p.lede {
  max-width: 52ch;
  color: var(--ivory-200);
  font-size: 18px;
  margin-top: 22px;
}

/* ---- Property grid (listing page) ---- */
.section { padding: 72px 0; }
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 40px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 24px;
}

.property-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
}

.property-card {
  background: var(--charcoal-900);
  border: 1px solid var(--line);
  overflow: hidden;
  transition: transform 0.3s ease, border-color 0.3s ease;
}
.property-card:hover {
  transform: translateY(-4px);
  border-color: var(--copper-700);
}

.property-card .thumb { aspect-ratio: 4 / 3; overflow: hidden; }
.property-card .thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; }
.property-card:hover .thumb img { transform: scale(1.05); }

.property-card .body { padding: 24px; }
.property-card .status-tag {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--copper-300);
  border: 1px solid var(--copper-700);
  padding: 4px 10px;
  margin-bottom: 14px;
}
.property-card h3 { font-size: 22px; }
.property-card .loc { color: var(--ivory-400); font-size: 14px; margin-top: 6px; }
.property-card .price { color: var(--copper-300); font-family: var(--font-display); font-size: 19px; margin-top: 16px; }

/* ---- Property detail page ---- */
.detail-hero {
  padding: 48px 0 40px;
  border-bottom: 1px solid var(--line);
}
.detail-hero .status-tag {
  font-size: 11px; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--copper-300); border: 1px solid var(--copper-700); padding: 5px 12px;
}
.detail-hero h1 { font-size: clamp(32px, 4.4vw, 50px); margin-top: 16px; }
.detail-hero .meta-row {
  display: flex; flex-wrap: wrap; gap: 28px; margin-top: 20px;
  color: var(--ivory-200); font-size: 15px;
}
.detail-hero .price { color: var(--copper-300); font-family: var(--font-display); font-size: 24px; }

/* Gallery */
.gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 160px;
  gap: 10px;
  margin: 40px 0;
}
.gallery img {
  width: 100%; height: 100%; object-fit: cover; cursor: pointer;
  transition: opacity 0.2s ease;
}
.gallery img:hover { opacity: 0.85; }
.gallery a:nth-child(1) { grid-column: span 2; grid-row: span 2; }
.gallery a:nth-child(4) { grid-column: span 2; }

/* Lightbox */
.lightbox {
  position: fixed; inset: 0; background: rgba(10, 10, 11, 0.94);
  display: none; align-items: center; justify-content: center; z-index: 100;
  padding: 40px;
}
.lightbox.active { display: flex; }
.lightbox img { max-height: 86vh; max-width: 90vw; object-fit: contain; }
.lightbox .close, .lightbox .nav {
  position: absolute; color: var(--ivory-100); font-size: 28px; cursor: pointer;
  background: var(--charcoal-800); border: 1px solid var(--line);
  width: 46px; height: 46px; display: flex; align-items: center; justify-content: center;
}
.lightbox .close { top: 28px; right: 32px; }
.lightbox .nav.prev { left: 28px; top: 50%; transform: translateY(-50%); }
.lightbox .nav.next { right: 28px; top: 50%; transform: translateY(-50%); }

/* Floor stack — signature element */
.floor-stack {
  display: flex;
  flex-direction: column-reverse;
  border: 1px solid var(--line);
}
.floor {
  display: grid;
  grid-template-columns: 140px 1fr;
  border-top: 1px solid var(--line);
  padding: 26px 28px;
}
.floor:first-child { border-top: none; }
.floor .level {
  font-family: var(--font-display);
  font-size: 15px;
  color: var(--copper-300);
  letter-spacing: 0.03em;
}
.floor .label { font-weight: 600; margin-bottom: 4px; }
.floor .detail { color: var(--ivory-400); font-size: 14px; }
.floor.underground { background: var(--charcoal-900); }

/* Specs */
.specs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 36px 48px;
}
.spec-group h4 {
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--copper-300);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}
.spec-group ul { list-style: none; margin: 0; padding: 0; }
.spec-group li {
  padding: 9px 0;
  border-bottom: 1px dashed var(--line);
  color: var(--ivory-200);
  font-size: 15px;
}
.spec-group li:last-child { border-bottom: none; }

/* Contact form */
.contact-section {
  background: var(--charcoal-900);
  border: 1px solid var(--line);
  padding: 48px;
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 48px;
}
.contact-copy p { color: var(--ivory-200); margin-top: 14px; }

.form-row { margin-bottom: 18px; }
.form-row label {
  display: block; font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--ivory-400); margin-bottom: 8px;
}
.form-row input, .form-row textarea {
  width: 100%;
  background: var(--charcoal-950);
  border: 1px solid var(--line);
  color: var(--ivory-100);
  padding: 13px 14px;
  font-family: var(--font-body);
  font-size: 15px;
  border-radius: var(--radius);
}
.form-row input:focus, .form-row textarea:focus {
  outline: none;
  border-color: var(--copper-500);
}
.form-row textarea { resize: vertical; min-height: 110px; }

.form-status { margin-top: 16px; font-size: 14px; display: none; }
.form-status.success { color: #8bbf8a; display: block; }
.form-status.error { color: #d98a8a; display: block; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 40px 0;
  color: var(--ivory-400);
  font-size: 13px;
  display: flex;
  justify-content: space-between;
}

/* Focus visibility */
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--copper-300);
  outline-offset: 2px;
}

/* ---- Responsive ---- */
@media (max-width: 860px) {
  .contact-section { grid-template-columns: 1fr; }
  .specs-grid { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: repeat(2, 1fr); grid-auto-rows: 140px; }
  .gallery a:nth-child(1) { grid-column: span 2; grid-row: span 1; }
  .main-nav { display: none; }
  .floor { grid-template-columns: 1fr; gap: 6px; }
}

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; scroll-behavior: auto !important; }
}