/* =====================================================
   LUMINA — Luxury Real Estate
   Design System
   ===================================================== */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&family=Inter:wght@300;400;500;600&display=swap');

/* --- Variables --- */
:root {
  --navy:       #0D1B2A;
  --navy-mid:   #142236;
  --navy-light: #1E3451;
  --gold:       #C9A84C;
  --gold-light: #E2C97E;
  --gold-dim:   #9A7A38;
  --white:      #F9F7F4;
  --off-white:  #EDE9E3;
  --gray-light: #D4CFC8;
  --gray:       #9A9590;
  --black:      #111111;

  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans:  'Inter', -apple-system, sans-serif;

  --max-width: 1280px;
  --section-pad: 100px;
  --transition: 0.38s cubic-bezier(.2,.7,.2,1);
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: var(--font-sans);
  background: var(--white);
  color: var(--black);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { display: block; max-width: 100%; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: var(--font-sans); }
ul { list-style: none; }

/* --- Layout --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 40px;
}
section { padding: var(--section-pad) 0; }

/* --- Typography --- */
.serif        { font-family: var(--font-serif); }
h1, h2, h3, h4 { font-family: var(--font-serif); font-weight: 500; line-height: 1.26; }
h1 { font-size: clamp(2.65rem, 5.2vw, 4.85rem); letter-spacing: 0.025em; }
h2 { font-size: clamp(2rem, 3.5vw, 3rem); letter-spacing: 0.018em; }
h3 { font-size: clamp(1.4rem, 2.5vw, 1.9rem); }
h4 { font-size: 1.25rem; }
p  { font-size: 0.95rem; color: var(--gray); line-height: 1.82; }

.label {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--gold);
}
.label-dark { color: var(--gold-dim); }

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 16px 36px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: var(--transition);
}
.btn-gold {
  background: var(--gold);
  color: var(--navy);
}
.btn-gold:hover { background: var(--gold-light); transform: translateY(-2px); box-shadow: 0 14px 34px rgba(201,168,76,0.22); }

.btn-outline-gold {
  border: 1px solid var(--gold);
  color: var(--gold);
}
.btn-outline-gold:hover { background: var(--gold); color: var(--navy); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(201,168,76,0.16); }

.btn-outline-white {
  border: 1px solid rgba(255,255,255,0.4);
  color: var(--white);
}
.btn-outline-white:hover { border-color: var(--gold); color: var(--gold); transform: translateY(-2px); box-shadow: 0 12px 30px rgba(201,168,76,0.12); }

.btn-navy {
  background: var(--navy);
  color: var(--white);
}
.btn-navy:hover { background: var(--navy-mid); }

/* --- Nav --- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 60px;
  transition: var(--transition);
}
.nav.scrolled {
  background: rgba(13,27,42,0.97);
  backdrop-filter: blur(12px);
  padding: 18px 60px;
  box-shadow: 0 2px 30px rgba(0,0,0,0.3);
}
.nav-logo {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--white);
  letter-spacing: 0.04em;
}
.nav-logo span { color: var(--gold); }
.nav-links {
  display: flex;
  gap: 40px;
  align-items: center;
}
.nav-links a {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.75);
  transition: var(--transition);
}
.nav-links a:hover { color: var(--gold); }
.nav-cta {
  padding: 12px 28px !important;
  background: var(--gold);
  color: var(--navy) !important;
  font-weight: 600 !important;
}
.nav-cta:hover { background: var(--gold-light) !important; color: var(--navy) !important; }

/* --- Gold Divider --- */
.gold-line {
  display: block;
  width: 60px;
  height: 1px;
  background: var(--gold);
  margin: 20px 0;
}
.gold-line-center { margin: 20px auto; }

/* --- Section Headers --- */
.section-header { margin-bottom: 60px; }
.section-header.centered { text-align: center; }
.section-header.centered .gold-line { margin: 20px auto; }

/* --- WhatsApp Float --- */
.whatsapp-float {
  position: fixed;
  bottom: 36px;
  right: 36px;
  z-index: 200;
  width: 60px;
  height: 60px;
  background: #25D366;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 20px rgba(37,211,102,0.4);
  transition: var(--transition);
}
.whatsapp-float:hover { transform: scale(1.08); box-shadow: 0 6px 30px rgba(37,211,102,0.5); }
.whatsapp-float svg { width: 30px; height: 30px; fill: white; }

/* --- Footer --- */
.footer {
  background: var(--navy);
  color: rgba(255,255,255,0.6);
  padding: 70px 0 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 60px;
  margin-bottom: 60px;
}
.footer-logo {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  color: var(--white);
  margin-bottom: 16px;
}
.footer-logo span { color: var(--gold); }
.footer-desc { font-size: 0.9rem; line-height: 1.8; color: rgba(255,255,255,0.5); }
.footer-col h4 {
  font-family: var(--font-sans);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 24px;
}
.footer-col ul li { margin-bottom: 12px; }
.footer-col ul li a {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.55);
  transition: var(--transition);
}
.footer-col ul li a:hover { color: var(--gold); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
}

/* --- Forms --- */
.form-group { margin-bottom: 20px; }
.form-group label {
  display: block;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: 8px;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background: transparent;
  border: 1px solid var(--gray-light);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--black);
  transition: var(--transition);
  outline: none;
  appearance: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--gold);
}
.form-group textarea { resize: vertical; min-height: 120px; }

/* on dark backgrounds */
.form-dark .form-group label { color: rgba(255,255,255,0.5); }
.form-dark .form-group input,
.form-dark .form-group select,
.form-dark .form-group textarea {
  border-color: rgba(255,255,255,0.15);
  color: var(--white);
  background: rgba(255,255,255,0.04);
}
.form-dark .form-group input::placeholder,
.form-dark .form-group textarea::placeholder { color: rgba(255,255,255,0.3); }
.form-dark .form-group input:focus,
.form-dark .form-group select:focus,
.form-dark .form-group textarea:focus { border-color: var(--gold); }

/* --- Cards --- */
.property-card {
  background: var(--white);
  overflow: hidden;
  transition: var(--transition);
  position: relative;
}
.property-card::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: var(--gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.55s cubic-bezier(.2,.7,.2,1);
}
.property-card:hover { transform: translateY(-7px); box-shadow: 0 26px 70px rgba(13,27,42,0.13); }
.property-card:hover::after { transform: scaleX(1); }
.property-card:hover .card-img img { transform: scale(1.035); }
.card-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 6/5;
  background: var(--navy-light);
}
.card-img img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.8s cubic-bezier(.2,.7,.2,1); }
.card-badge {
  position: absolute;
  top: 16px; left: 16px;
  background: var(--gold);
  color: var(--navy);
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 6px 14px;
}
.card-body { padding: 30px 0 8px; }
.card-price {
  font-family: var(--font-serif);
  font-size: 1.78rem;
  color: var(--black);
  margin-bottom: 10px;
  letter-spacing: 0.015em;
}
.card-title {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--black);
  margin-bottom: 6px;
}
.card-location {
  font-size: 0.8rem;
  color: var(--gray);
  margin-bottom: 20px;
}
.card-specs {
  display: flex;
  gap: 24px;
  padding-top: 18px;
  border-top: 1px solid var(--off-white);
}
.card-spec {
  font-size: 0.78rem;
  color: var(--gray);
  display: flex;
  align-items: center;
  gap: 6px;
}
.card-spec span { font-weight: 600; color: var(--black); }

/* --- Utility --- */
.text-gold { color: var(--gold); }
.text-navy { color: var(--navy); }
.text-white { color: var(--white); }
.bg-navy { background: var(--navy); }
.bg-off-white { background: var(--off-white); }
.mt-8  { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-40 { margin-top: 40px; }
.mb-8  { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-40 { margin-bottom: 40px; }

@media (max-width: 768px) {
  .container { padding: 0 24px; }
  section { padding: 60px 0; }
  .nav { padding: 20px 24px; }
  .nav.scrolled { padding: 16px 24px; }
  .nav-links { display: none; }
  .footer-grid { grid-template-columns: 1fr; gap: 40px; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
}