/* =============================================================
   Constructora Rodríguez Javier — Premium Design System
   Multi-page | Clean | Luxury Real Estate
   ============================================================= */

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

/* ─── Design Tokens ─────────────────────────────────────────── */
:root {
  --navy:      #0d1f3c;
  --navy-mid:  #1a3261;
  --gold:      #b89a5a;
  --gold-lt:   #d4b87a;
  --white:     #ffffff;
  --off-white: #f8f7f4;
  --light:     #f2f0eb;
  --mid:       #e0ddd7;
  --muted:     #8a8580;
  --dark:      #1c1a17;

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

  --nav-h: 80px;
  --max-w: 1280px;
  --side-pad: clamp(1.5rem, 5vw, 4rem);

  --ease: cubic-bezier(.4,0,.2,1);
  --trans: .25s var(--ease);
}

/* ─── Reset ─────────────────────────────────────────────────── */
*,*::before,*::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-sans);
  font-weight: 400;
  color: var(--dark);
  background: var(--white);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; border: none; background: none; font: inherit; }

/* ─── Layout Helpers ─────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--side-pad);
}
.section { padding-block: clamp(4rem, 8vw, 7rem); }
.section--light { background: var(--off-white); }
.section--dark  { background: var(--navy); color: var(--white); }

/* ─── Typography ─────────────────────────────────────────────── */
.display {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -.01em;
}
.display-sm {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 400;
  line-height: 1.2;
}
.overline {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gold);
}
.lead {
  font-size: 1.0625rem;
  color: var(--muted);
  line-height: 1.7;
  max-width: 56ch;
}
.label {
  font-size: .8125rem;
  font-weight: 500;
  letter-spacing: .04em;
}

/* ─── Buttons ─────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .8rem 1.75rem;
  border-radius: 2px;
  font-family: var(--font-sans);
  font-size: .875rem;
  font-weight: 500;
  letter-spacing: .04em;
  transition: var(--trans);
  white-space: nowrap;
}
.btn-primary {
  background: var(--navy);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--navy-mid);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(13,31,60,.25);
}
.btn-gold {
  background: var(--gold);
  color: var(--white);
}
.btn-gold:hover {
  background: var(--gold-lt);
  transform: translateY(-1px);
}
.btn-outline {
  border: 1.5px solid var(--navy);
  color: var(--navy);
}
.btn-outline:hover {
  background: var(--navy);
  color: var(--white);
}
.btn-outline-white {
  border: 1.5px solid rgba(255,255,255,.55);
  color: var(--white);
}
.btn-outline-white:hover {
  background: var(--white);
  color: var(--navy);
  border-color: var(--white);
}

/* ─── Navigation ────────────────────────────────────────────── */
.site-nav {
  position: fixed;
  top: 0; left: 0; width: 100%;
  z-index: 1000;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: background var(--trans), box-shadow var(--trans);
}
.site-nav.scrolled {
  background: rgba(255,255,255,.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--mid);
}
.site-nav.nav-dark:not(.scrolled) {
  --nav-link-color: rgba(255,255,255,.85);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--side-pad);
}
.nav-logo img {
  height: 60px;
  width: auto;
  object-fit: contain;
  filter: brightness(0) invert(1);
  transition: filter var(--trans), height var(--trans);
}
.site-nav.scrolled .nav-logo img {
  filter: brightness(0) invert(1);
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  font-size: .875rem;
  font-weight: 500;
  color: var(--nav-link-color, var(--dark));
  letter-spacing: .02em;
  transition: color var(--trans);
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0;
  width: 0; height: 1.5px;
  background: var(--gold);
  transition: width var(--trans);
}
.nav-links a:hover,
.nav-links a.active { color: var(--gold); }
.nav-links a:hover::after,
.nav-links a.active::after { width: 100%; }
.nav-cta { margin-left: 1rem; }

/* Lang switcher */
.lang-switcher { display: flex; gap: .25rem; }
.lang-btn {
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .08em;
  padding: .25rem .5rem;
  border-radius: 2px;
  color: var(--nav-link-color, var(--muted));
  transition: var(--trans);
}
.lang-btn.active,
.lang-btn:hover { color: var(--gold); }

/* Mobile hamburger */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.nav-hamburger span {
  display: block;
  width: 24px; height: 1.5px;
  background: var(--nav-link-color, var(--dark));
  transition: var(--trans);
}
.nav-hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px,5px); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px,-5px); }

@media (max-width: 900px) {
  .nav-hamburger { display: flex; }
  .nav-links {
    position: fixed;
    inset: var(--nav-h) 0 0 0;
    flex-direction: column;
    justify-content: center;
    gap: 2.5rem;
    background: var(--white);
    transform: translateX(100%);
    transition: transform var(--trans);
    pointer-events: none;
  }
  .nav-links.open {
    transform: translateX(0);
    pointer-events: all;
  }
  .nav-links a { font-size: 1.25rem; color: var(--dark) !important; }
  .nav-cta { margin-left: 0; }
  .lang-switcher { margin-top: 1rem; }
}

/* ─── Footer ─────────────────────────────────────────────────── */
.site-footer {
  background: var(--navy);
  color: rgba(255,255,255,.7);
  padding-block: 4rem 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 3rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid rgba(255,255,255,.1);
}
.footer-brand .footer-logo img {
  height: 40px;
  filter: brightness(0) invert(1);
  opacity: .85;
  margin-bottom: 1.25rem;
}
.footer-brand p {
  font-size: .875rem;
  line-height: 1.7;
  max-width: 28ch;
}
.footer-col h4 {
  font-family: var(--font-sans);
  font-size: .75rem;
  font-weight: 600;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: 1.25rem;
}
.footer-col ul li { margin-bottom: .75rem; }
.footer-col ul a {
  font-size: .875rem;
  color: rgba(255,255,255,.6);
  transition: color var(--trans);
}
.footer-col ul a:hover { color: var(--gold-lt); }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding-top: 2rem;
  font-size: .8125rem;
  color: rgba(255,255,255,.4);
}
.footer-bottom a { color: var(--gold-lt); }
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
}
@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
}

/* ─── Hero ───────────────────────────────────────────────────── */
.hero {
  position: relative;
  height: 100svh;
  min-height: 600px;
  display: flex;
  align-items: flex-end;
  padding-bottom: clamp(3rem, 6vw, 5rem);
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background: url('../assets/images/hero/hero-bg.webp') center/cover no-repeat;
}
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to top,
    rgba(13,31,60,.85) 0%,
    rgba(13,31,60,.35) 60%,
    rgba(13,31,60,.1) 100%
  );
}
.hero-content {
  position: relative;
  z-index: 1;
  color: var(--white);
  max-width: 680px;
}
.hero-content .overline { color: var(--gold-lt); margin-bottom: 1rem; }
.hero-content h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.75rem, 5.5vw, 4.5rem);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -.01em;
  margin-bottom: 1.5rem;
  color: var(--white);
}
.hero-content p {
  font-size: 1.0625rem;
  color: rgba(255,255,255,.78);
  max-width: 50ch;
  margin-bottom: 2.5rem;
  line-height: 1.7;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* Hero stats bar */
.hero-stats {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  z-index: 2;
  background: rgba(255,255,255,.06);
  backdrop-filter: blur(10px);
  border-top: 1px solid rgba(255,255,255,.12);
}
.hero-stats-inner {
  display: flex;
  justify-content: space-around;
  padding-block: 1.25rem;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: var(--side-pad);
}
.hero-stat { text-align: center; color: var(--white); }
.hero-stat strong { display: block; font-family: var(--font-serif); font-size: 1.75rem; font-weight: 400; }
.hero-stat span { font-size: .78rem; letter-spacing: .08em; opacity: .7; text-transform: uppercase; }

/* ─── Property Cards ─────────────────────────────────────────── */
.prop-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 2rem;
}
.prop-card {
  background: var(--white);
  border: 1px solid var(--mid);
  border-radius: 3px;
  overflow: hidden;
  transition: box-shadow var(--trans), transform var(--trans);
  cursor: pointer;
}
.prop-card:hover {
  box-shadow: 0 12px 40px rgba(13,31,60,.12);
  transform: translateY(-3px);
}
.prop-card-img {
  position: relative;
  overflow: hidden;
  aspect-ratio: 4/3;
}
.prop-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform .5s var(--ease);
}
.prop-card:hover .prop-card-img img { transform: scale(1.05); }
.prop-card-badge {
  position: absolute;
  top: 1rem; left: 1rem;
  background: var(--navy);
  color: var(--white);
  font-size: .7rem;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding: .3rem .75rem;
  border-radius: 2px;
}
.prop-card-badge.gold { background: var(--gold); }
.prop-card-body { padding: 1.5rem; }
.prop-card-location {
  font-size: .78rem;
  font-weight: 500;
  letter-spacing: .06em;
  color: var(--gold);
  text-transform: uppercase;
  margin-bottom: .5rem;
}
.prop-card-title {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 400;
  color: var(--navy);
  margin-bottom: 1rem;
  line-height: 1.3;
}
.prop-card-specs {
  display: flex;
  gap: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--light);
  font-size: .8125rem;
  color: var(--muted);
}
.prop-card-spec { display: flex; align-items: center; gap: .35rem; }
.prop-card-spec svg { color: var(--gold); }
.prop-card-price {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--navy);
  margin-top: .75rem;
}

/* ─── Section Header ─────────────────────────────────────────── */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 3rem;
  gap: 2rem;
  flex-wrap: wrap;
}
.section-header-content {}
.section-header .overline { margin-bottom: .75rem; }
.section-header h2 { margin-top: .25rem; }

/* ─── Divider Line ───────────────────────────────────────────── */
.gold-line {
  width: 40px; height: 2px;
  background: var(--gold);
  margin-bottom: 1.5rem;
}

/* ─── Service Cards ─────────────────────────────────────────── */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1px;
  background: var(--mid);
  border: 1px solid var(--mid);
}
.service-card {
  background: var(--white);
  padding: 2.5rem;
  transition: background var(--trans);
}
.service-card:hover { background: var(--off-white); }
.service-card-icon {
  width: 48px; height: 48px;
  margin-bottom: 1.5rem;
  color: var(--gold);
}
.service-card h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--navy);
  margin-bottom: .75rem;
}
.service-card p { font-size: .9rem; color: var(--muted); line-height: 1.7; }
.service-card-link {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  margin-top: 1.25rem;
  font-size: .8125rem;
  font-weight: 600;
  letter-spacing: .04em;
  color: var(--navy);
  transition: gap var(--trans), color var(--trans);
}
.service-card-link:hover { color: var(--gold); gap: .75rem; }

/* ─── About Strip ────────────────────────────────────────────── */
.about-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(3rem, 6vw, 6rem);
  align-items: center;
}
.about-split-img { position: relative; }
.about-split-img img { width: 100%; aspect-ratio: 4/5; object-fit: cover; border-radius: 2px; }
.about-split-img .stat-card {
  position: absolute;
  bottom: -2rem; right: -2rem;
  background: var(--navy);
  color: var(--white);
  padding: 1.75rem 2rem;
  text-align: center;
  border-radius: 2px;
  min-width: 140px;
}
.stat-card strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 2.5rem;
  color: var(--gold-lt);
  font-weight: 400;
}
.stat-card span { font-size: .75rem; letter-spacing: .08em; text-transform: uppercase; opacity: .75; }
.about-split-text .lead { margin-block: 1.25rem; }
.about-stats {
  display: flex;
  gap: 2.5rem;
  margin-top: 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--mid);
}
.about-stat strong {
  display: block;
  font-family: var(--font-serif);
  font-size: 1.75rem;
  color: var(--navy);
}
.about-stat span { font-size: .8rem; color: var(--muted); }
@media (max-width: 768px) {
  .about-split { grid-template-columns: 1fr; }
  .about-split-img .stat-card { right: 1rem; bottom: 1rem; }
  .about-stats { gap: 1.5rem; }
}

/* ─── CTA Banner ─────────────────────────────────────────────── */
.cta-banner {
  background: var(--navy);
  padding-block: clamp(3.5rem, 6vw, 5rem);
  text-align: center;
  color: var(--white);
}
.cta-banner .overline { color: var(--gold-lt); margin-bottom: 1rem; }
.cta-banner h2 {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 400;
  margin-bottom: 1.5rem;
}
.cta-banner p { color: rgba(255,255,255,.7); margin-bottom: 2.5rem; font-size: 1rem; }
.cta-banner-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ─── Page Hero (inner pages) ────────────────────────────────── */
.page-hero {
  background: var(--navy);
  padding-top: calc(var(--nav-h) + 4rem);
  padding-bottom: 4rem;
  color: var(--white);
}
.page-hero .overline { color: var(--gold-lt); margin-bottom: 1rem; }
.page-hero h1 {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3.25rem);
  font-weight: 400;
  margin-bottom: 1rem;
}
.page-hero p {
  color: rgba(255,255,255,.7);
  max-width: 55ch;
  font-size: 1rem;
}

/* ─── Filters ────────────────────────────────────────────────── */
.filter-bar {
  display: flex;
  gap: .5rem;
  flex-wrap: wrap;
  padding-block: 2rem;
  border-bottom: 1px solid var(--mid);
  margin-bottom: 3rem;
}
.filter-btn {
  padding: .5rem 1.25rem;
  border: 1.5px solid var(--mid);
  border-radius: 100px;
  font-size: .8125rem;
  font-weight: 500;
  color: var(--muted);
  transition: var(--trans);
}
.filter-btn:hover,
.filter-btn.active {
  border-color: var(--navy);
  color: var(--navy);
  background: var(--light);
}

/* ─── Forms ──────────────────────────────────────────────────── */
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.form-group { display: flex; flex-direction: column; gap: .5rem; }
.form-group.full { grid-column: 1 / -1; }
.form-group label {
  font-size: .8125rem;
  font-weight: 500;
  color: var(--dark);
  letter-spacing: .02em;
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: .875rem 1rem;
  border: 1.5px solid var(--mid);
  border-radius: 2px;
  font-family: var(--font-sans);
  font-size: .9375rem;
  color: var(--dark);
  background: var(--white);
  transition: border-color var(--trans);
  outline: none;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus { border-color: var(--navy); }
.form-group textarea { resize: vertical; min-height: 140px; }
@media (max-width: 600px) { .form-grid { grid-template-columns: 1fr; } }

/* ─── Testimonials ───────────────────────────────────────────── */
.testi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}
.testi-card {
  border: 1px solid var(--mid);
  border-radius: 3px;
  padding: 2rem;
}
.testi-stars { color: var(--gold); margin-bottom: 1rem; font-size: 1rem; letter-spacing: .1rem; }
.testi-text { font-size: .9375rem; color: var(--dark); line-height: 1.7; font-style: italic; margin-bottom: 1.5rem; }
.testi-author { font-weight: 600; font-size: .875rem; }
.testi-location { font-size: .8rem; color: var(--muted); margin-top: .2rem; }

/* ─── WhatsApp Widget ────────────────────────────────────────── */
.wa-widget {
  position: fixed;
  bottom: 2rem; right: 2rem;
  z-index: 900;
}
.wa-toggle {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: #25d366;
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 16px rgba(37,211,102,.45);
  transition: transform var(--trans);
  cursor: pointer;
}
.wa-toggle:hover { transform: scale(1.08); }
.wa-box {
  position: absolute;
  bottom: 70px; right: 0;
  width: 300px;
  background: var(--white);
  border-radius: 6px;
  box-shadow: 0 8px 40px rgba(0,0,0,.14);
  overflow: hidden;
  opacity: 0;
  transform: scale(.95) translateY(8px);
  pointer-events: none;
  transition: opacity var(--trans), transform var(--trans);
}
.wa-box.open { opacity: 1; transform: scale(1) translateY(0); pointer-events: all; }
.wa-box-header {
  background: #075e54;
  color: var(--white);
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  gap: .75rem;
}
.wa-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,.2);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
}
.wa-box-header h4 { font-size: .9rem; font-weight: 600; }
.wa-box-header span { font-size: .75rem; opacity: .8; }
.wa-box-body { padding: 1.25rem; }
.wa-bubble {
  background: var(--light);
  border-radius: 0 8px 8px 8px;
  padding: .875rem 1rem;
  font-size: .875rem;
  color: var(--dark);
  margin-bottom: 1rem;
}
.wa-box-body .btn { width: 100%; justify-content: center; background: #25d366; color: var(--white); border-radius: 4px; }

/* ─── Scroll to top ──────────────────────────────────────────── */
.back-to-top {
  position: fixed;
  bottom: 7rem; right: 2rem;
  width: 40px; height: 40px;
  background: var(--navy);
  color: var(--white);
  border-radius: 2px;
  display: flex; align-items: center; justify-content: center;
  opacity: 0; pointer-events: none;
  transition: opacity var(--trans);
  z-index: 800;
}
.back-to-top.visible { opacity: 1; pointer-events: all; }

/* ─── Utility ────────────────────────────────────────────────── */
.text-center { text-align: center; }
.text-gold { color: var(--gold); }
.text-navy { color: var(--navy); }
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: .5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.gap-sm { gap: .75rem; }
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.body-offset { padding-top: var(--nav-h); }

/* ─── Animations ─────────────────────────────────────────────── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
.fade-up { opacity: 0; }
.fade-up.visible { animation: fadeUp .6s var(--ease) forwards; }
.fade-up:nth-child(2) { animation-delay: .1s; }
.fade-up:nth-child(3) { animation-delay: .2s; }
.fade-up:nth-child(4) { animation-delay: .3s; }

/* ─── Responsive Fallbacks ───────────────────────────────────── */
@media (max-width: 1024px) {
  .prop-grid { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
}
@media (max-width: 600px) {
  .section { padding-block: 3rem; }
  .prop-grid { grid-template-columns: 1fr; }
  .services-grid { grid-template-columns: 1fr; background: none; border: none; gap: 1px; }
  .service-card { border: 1px solid var(--mid); }
  .testi-grid { grid-template-columns: 1fr; }
  .hero-stats-inner { flex-wrap: wrap; gap: 1rem; justify-content: center; }
}