/* =================================================================
   Gulshan Empire — Design Tokens & Base Styles
   Style: Elegant luxury real estate (deep charcoal/navy + warm gold)
   Fonts: Playfair Display (headings) + Inter (body)
   ================================================================= */

:root {
  /* Color tokens */
  --color-bg: #0e1116;
  --color-surface: #171b22;
  --color-surface-alt: #1f242d;
  --color-ink: #eef1f6;
  --color-ink-muted: #b7c0cd;
  --color-gold: #c9a24b;
  --color-gold-light: #e4c884;
  --color-border: rgba(255,255,255,0.08);
  --color-success: #3fae6a;
  --color-error: #e0575a;
  --color-light-bg: #f7f5f1;
  --color-light-ink: #1b1d21;

  /* Typography */
  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing (4/8pt rhythm) */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 16px;
  --space-4: 24px;
  --space-5: 32px;
  --space-6: 48px;
  --space-7: 64px;
  --space-8: 96px;

  /* Layout */
  --container-max: 1200px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-elevated: 0 20px 60px rgba(0,0,0,0.35);
  --z-header: 100;
  --z-modal: 1000;
}

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

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

img { max-width: 100%; display: block; }

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin: 0 0 var(--space-3);
  color: #fff;
}
h1 { font-size: clamp(2.25rem, 5vw, 3.75rem); }
h2 { font-size: clamp(1.75rem, 3.5vw, 2.75rem); }
h3 { font-size: 1.375rem; }

p { margin: 0 0 var(--space-3); color: var(--color-ink-muted); }

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.center { text-align: center; }
.eyebrow {
  color: var(--color-gold);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 600;
  font-size: 0.8125rem;
  margin-bottom: var(--space-2);
}
.eyebrow.center { text-align: center; }
.section-lead { max-width: 640px; }
.section-lead.center { margin-left: auto; margin-right: auto; }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-gold);
  color: #111;
  padding: var(--space-2) var(--space-3);
  z-index: 2000;
}
.skip-link:focus { left: var(--space-3); top: var(--space-3); }

/* -------------------- Buttons -------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 48px;
  padding: 0 var(--space-4);
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.9375rem;
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: transform 150ms ease-out, background-color 150ms ease-out, border-color 150ms ease-out;
  touch-action: manipulation;
}
.btn:active { transform: scale(0.97); }
.btn:focus-visible { outline: 3px solid var(--color-gold-light); outline-offset: 2px; }

.btn-primary { background: var(--color-gold); color: #1a1305; }
.btn-primary:hover { background: var(--color-gold-light); }

.btn-secondary { background: var(--color-surface-alt); color: #fff; border-color: var(--color-border); }
.btn-secondary:hover { border-color: var(--color-gold); }

.btn-outline { background: transparent; color: var(--color-gold); border-color: var(--color-gold); }
.btn-outline:hover { background: rgba(201,162,75,0.1); }

.btn-lg { min-height: 56px; padding: 0 var(--space-5); font-size: 1.0625rem; }
.btn-block { width: 100%; }
.btn-header-cta { display: none; }
@media (min-width: 860px) { .btn-header-cta { display: inline-flex; } }

.header-phone {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-left: var(--space-4);
  color: var(--color-gold-light);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9375rem;
  white-space: nowrap;
  line-height: 1;
}
.header-phone:hover { color: var(--color-gold); }
@media (max-width: 1179px) { .header-phone { display: none; } }

.btn-spinner {
  width: 18px; height: 18px;
  border: 2px solid rgba(0,0,0,0.25);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 700ms linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* -------------------- Header -------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  background: rgba(14,17,22,0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  min-height: 72px;
}
.brand { font-family: var(--font-heading); font-size: 1.375rem; color: #fff; text-decoration: none; font-weight: 700; }
.brand span { color: var(--color-gold); }
.main-nav { display: none; gap: var(--space-4); }
.main-nav a { color: var(--color-ink-muted); text-decoration: none; font-weight: 500; font-size: 0.9375rem; }
.main-nav a:hover { color: var(--color-gold); }
@media (min-width: 1024px) { .main-nav { display: flex; } }

.nav-toggle {
  display: flex; flex-direction: column; gap: 5px;
  width: 44px; height: 44px; align-items: center; justify-content: center;
  background: transparent; border: none; cursor: pointer;
}
.nav-toggle span { width: 22px; height: 2px; background: #fff; }
@media (min-width: 1024px) { .nav-toggle { display: none; } }

/* -------------------- Hero -------------------- */
.hero { position: relative; padding: var(--space-8) 0 var(--space-7); overflow: hidden; min-height: 88vh; display: flex; align-items: center; }
.hero-bg {
  position: absolute; inset: 0;
  background-size: cover; background-position: center;
  filter: brightness(0.55);
}
.hero-overlay {
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(14,17,22,0.55) 0%, rgba(14,17,22,0.85) 90%);
}
.hero-content { position: relative; max-width: 760px; }
.hero-lead { font-size: 1.125rem; max-width: 620px; }
.hero-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin: var(--space-5) 0;
  max-width: 520px;
}
@media (min-width: 640px) { .hero-stats { grid-template-columns: repeat(4, 1fr); } }
.hero-stats strong { display: block; font-family: var(--font-heading); font-size: 1.75rem; color: var(--color-gold); }
.hero-stats span { font-size: 0.8125rem; color: var(--color-ink-muted); text-transform: uppercase; letter-spacing: 0.06em; }

/* -------------------- Sections -------------------- */
.section { padding: var(--space-8) 0; }

/* Gulshan Madhuban Bapudham / About */
.section-madhuban { background: var(--color-bg); }
.section-title-wrap { max-width: 760px; text-align: center; margin: 0 auto var(--space-7); }
.about-highlights { display: grid; gap: var(--space-3); align-content: start; }
.about-text h3 { color: var(--color-gold-light); }

/* Gulshan Empire Overview */
.section-empire { background: var(--color-surface); }
.section-empire h2 { color: var(--color-gold-light); }
.section-empire .section-lead { margin-left: auto; margin-right: auto; }

/* Floor Plans */
.section-floorplan { background: var(--color-surface-alt); }
.floorplan-grid { display: grid; gap: var(--space-4); margin-top: var(--space-6); }
@media (min-width: 720px) { .floorplan-grid { grid-template-columns: repeat(3, 1fr); } }
.floorplan-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-gold);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.floorplan-card h3 { color: var(--color-gold-light); }
.floorplan-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #1a1305;
  background: var(--color-gold);
  border-radius: 999px;
  padding: 4px 12px;
  margin-bottom: var(--space-3);
}
.floorplan-spec { flex: 1; }

.section-about { background: var(--color-surface); }
.about-grid { display: grid; gap: var(--space-6); align-items: center; }
@media (min-width: 900px) { .about-grid { grid-template-columns: 1fr 1fr; } }
.about-image {
  background-size: cover; background-position: center;
  border-radius: var(--radius-lg);
  min-height: 320px;
  box-shadow: var(--shadow-elevated);
}
.check-list { list-style: none; padding: 0; margin: 0 0 var(--space-4); }
.check-list li { padding-left: var(--space-4); position: relative; margin-bottom: var(--space-2); color: var(--color-ink-muted); }
.check-list li::before { content: "✓"; position: absolute; left: 0; color: var(--color-gold); font-weight: 700; }

/* Legacy stats grid */
.legacy-stats-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-3); }
@media (min-width: 640px) { .legacy-stats-grid { grid-template-columns: repeat(3, 1fr); } }
.legacy-stat {
  background: var(--color-surface-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  text-align: center;
}
.legacy-stat strong { display: block; font-family: var(--font-heading); font-size: 2rem; color: var(--color-gold); line-height: 1.1; }
.legacy-stat span { font-size: 0.8125rem; color: var(--color-ink-muted); text-transform: uppercase; letter-spacing: 0.04em; }

/* Amenities */
.section-amenities { background: var(--color-bg); }
.amenities-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-6);
}
@media (min-width: 640px) { .amenities-grid { grid-template-columns: repeat(3, 1fr); } }
@media (min-width: 900px) { .amenities-grid { grid-template-columns: repeat(4, 1fr); } }
.amenity-chip {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 3px solid var(--color-gold);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  font-size: 0.9375rem;
  color: var(--color-ink);
  font-weight: 500;
}

/* Site Plan */
.section-siteplan { background: var(--color-surface); }
.siteplan-image-wrap {
  margin-top: var(--space-6);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-elevated);
  border: 1px solid var(--color-border);
}
.siteplan-image-wrap img { width: 100%; height: auto; display: block; }

.section-layouts { background: var(--color-bg); }
.unit-grid { display: grid; gap: var(--space-4); margin-top: var(--space-6); }
@media (min-width: 720px) { .unit-grid { grid-template-columns: repeat(2, 1fr); } }
.unit-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-5);
  text-align: center;
}
.unit-card h3 { color: var(--color-gold-light); }
.unit-area { font-weight: 600; color: #fff; }
.unit-desc { font-size: 0.875rem; }
.unit-floorplan {
  background: #fff;
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-bottom: var(--space-4);
}
.unit-floorplan img { width: 100%; height: auto; display: block; }

/* Connectivity */
.section-connectivity { background: var(--color-surface); }
.connectivity-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  margin-top: var(--space-6);
}
@media (min-width: 640px) { .connectivity-grid { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .connectivity-grid { grid-template-columns: repeat(3, 1fr); } }
.connectivity-card {
  background: var(--color-surface-alt);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-5);
  border-left: 3px solid var(--color-gold);
}
.connectivity-card h4 { font-family: var(--font-body); font-weight: 600; color: #fff; margin-bottom: var(--space-2); font-size: 1rem; }
.connectivity-card ul { list-style: none; padding: 0; margin: 0; }
.connectivity-card li { color: var(--color-ink-muted); font-size: 0.9375rem; padding: var(--space-1) 0; border-bottom: 1px dashed var(--color-border); }
.connectivity-card li:last-child { border-bottom: none; }

.section-pricing { background: var(--color-surface); }
.pricing-grid { display: grid; gap: var(--space-6); }
@media (min-width: 900px) { .pricing-grid { grid-template-columns: 1.1fr 0.9fr; } }
.pricing-table { width: 100%; border-collapse: collapse; margin: var(--space-4) 0; }
.pricing-table td { padding: var(--space-2) 0; border-bottom: 1px solid var(--color-border); color: var(--color-ink-muted); }
.pricing-table tr td:last-child { text-align: right; color: #fff; font-weight: 600; }
.pricing-note { text-align: left !important; color: var(--color-gold) !important; font-weight: 500 !important; padding-top: var(--space-2) !important; }
.pricing-highlights { display: grid; gap: var(--space-3); align-content: start; }
.highlight-card {
  background: var(--color-surface-alt);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  border-left: 3px solid var(--color-gold);
}
.highlight-card h4 { font-family: var(--font-body); font-weight: 600; color: #fff; margin-bottom: var(--space-1); }
.highlight-card p { margin: 0; font-size: 0.9375rem; }

.section-urgency { background: linear-gradient(180deg, var(--color-bg), var(--color-surface)); }
.urgency-note { margin-top: var(--space-3); font-size: 0.875rem; color: var(--color-ink-muted); }

/* -------------------- Footer -------------------- */
.site-footer { background: #0a0c10; padding: var(--space-6) 0 var(--space-4); border-top: 1px solid var(--color-border); }
.footer-inner { display: flex; flex-wrap: wrap; gap: var(--space-5); justify-content: space-between; align-items: flex-start; }
.brand-footer { margin-bottom: var(--space-2); }
.footer-contact p { margin-bottom: var(--space-2); }
.footer-contact a { color: var(--color-gold-light); text-decoration: none; }
.footer-contact .footer-phone { display: inline-flex; align-items: center; gap: 10px; }
.footer-legal { margin-top: var(--space-5); padding-top: var(--space-4); border-top: 1px solid var(--color-border); }
.footer-legal p { font-size: 0.8125rem; color: #6b7280; margin: 0; }

/* -------------------- Modal -------------------- */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(5,6,8,0.72);
  display: flex; align-items: center; justify-content: center;
  padding: var(--space-3);
  z-index: var(--z-modal);
}
.modal-overlay[hidden] { display: none; }
.modal-box {
  background: var(--color-light-bg);
  color: var(--color-light-ink);
  border-radius: var(--radius-lg);
  padding: var(--space-3) var(--space-5) var(--space-4);
  max-width: 460px;
  width: 100%;
  max-height: 97vh;
  overflow-y: auto;
  position: relative;
  box-shadow: var(--shadow-elevated);
  scrollbar-width: thin;
  scrollbar-color: var(--color-gold) transparent;
}
.modal-box::-webkit-scrollbar { width: 6px; }
.modal-box::-webkit-scrollbar-track { background: transparent; }
.modal-box::-webkit-scrollbar-thumb { background-color: var(--color-gold); border-radius: 10px; }
.modal-box h3 { color: var(--color-light-ink); font-size: 1.5rem; }
.modal-sub { font-size: 0.875rem; color: #555; margin-bottom: var(--space-3); }
.modal-close {
  position: absolute; top: var(--space-3); right: var(--space-3);
  width: 44px; height: 44px;
  background: transparent; border: none; font-size: 1.75rem;
  cursor: pointer; color: #555; line-height: 1;
}
.modal-close:hover { color: #000; }

.modal-box .form-group { margin-bottom: var(--space-2); }
.form-group label { display: block; font-weight: 600; font-size: 0.875rem; margin-bottom: var(--space-1); color: var(--color-light-ink); }
.req { color: var(--color-error); }
.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  min-height: 44px;
  padding: var(--space-2) var(--space-3);
  border: 1px solid #d0d3d8;
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 1rem;
  background: #fff;
  color: #111;
}
.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  outline: 3px solid var(--color-gold-light);
  outline-offset: 1px;
  border-color: var(--color-gold);
}
.field-error { display: block; color: var(--color-error); font-size: 0.8125rem; min-height: 1.2em; margin-top: var(--space-1); }
.form-status { text-align: center; font-size: 0.9375rem; min-height: 1.2em; margin-top: var(--space-2); }
.form-status.success { color: var(--color-success); font-weight: 600; }
.form-status.error { color: var(--color-error); font-weight: 600; }

/* Honeypot — visually hidden but accessible-hidden too, since it's a bot trap */
.hp-field { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: 0.001ms !important; transition-duration: 0.001ms !important; }
}