/* =========================================================
   TREALVA — Estrategias inmobiliarias de valor
   ========================================================= */

:root{
  --navy: #0c2a44;
  --navy-soft: #1c3c5a;
  --ivory: #f7f3ec;
  --ivory-dim: #efe9de;
  --terracotta: #c46a45;
  --terracotta-dark: #a8552f;
  --taupe: #8a8072;
  --ink: #2c2721;
  --white: #ffffff;

  --font-serif: 'Fraunces', Georgia, serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --container: 1160px;
  --radius: 4px;
}

*{ box-sizing: border-box; min-width: 0; }
html{ scroll-behavior: smooth; overflow-x: hidden; }
body{
  margin: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--ivory);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img{ max-width: 100%; display: block; }
a{ color: inherit; text-decoration: none; }
h1,h2,h3{ font-family: var(--font-serif); font-weight: 500; margin: 0 0 .5em; color: var(--navy); }
p{ margin: 0 0 1em; line-height: 1.65; }

.eyebrow{
  font-family: var(--font-sans);
  font-size: .75rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--terracotta-dark);
  font-weight: 600;
  margin-bottom: 1em;
}
.eyebrow-light{ color: rgba(247,243,236,.85); }

.body-lg{ font-size: 1.125rem; color: var(--ink); max-width: 46ch; }

/* ---------- Buttons ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .95em 2em;
  border-radius: 999px;
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: .02em;
  transition: all .25s ease;
  border: 1px solid transparent;
  cursor: pointer;
}
.btn-primary{ background: var(--terracotta); color: var(--white); }
.btn-primary:hover{ background: var(--terracotta-dark); transform: translateY(-1px); }
.btn-ghost{ background: transparent; color: var(--ivory); border-color: rgba(247,243,236,.5); }
.btn-ghost:hover{ background: rgba(247,243,236,.12); }
.btn-block{ width: 100%; }

/* ---------- Header / Nav ---------- */
.site-header{
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  padding: 22px 0;
  transition: background .35s ease, padding .35s ease, box-shadow .35s ease;
}
.site-header.is-solid{
  background: rgba(247,243,236,.94);
  backdrop-filter: blur(8px);
  padding: 14px 0;
  box-shadow: 0 1px 0 rgba(12,42,68,.08);
}
.header-inner{
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo-link{ display: block; }
.logo{ height: 26px; width: auto; }
.logo-dark{ display: none; }
.site-header.is-solid .logo-light{ display: none; }
.site-header.is-solid .logo-dark{ display: block; }

.main-nav{ display: flex; align-items: center; gap: 34px; }
.main-nav a{
  font-size: .92rem;
  font-weight: 500;
  color: var(--ivory);
  transition: color .25s ease;
  position: relative;
}
.site-header.is-solid .main-nav a{ color: var(--navy); }
.main-nav a:not(.nav-cta):after{
  content:'';
  position: absolute; left:0; right:0; bottom: -6px; height: 1px;
  background: currentColor; transform: scaleX(0); transform-origin: left;
  transition: transform .25s ease;
}
.main-nav a:not(.nav-cta):hover:after{ transform: scaleX(1); }
.nav-cta{
  background: var(--terracotta);
  color: var(--white) !important;
  padding: .55em 1.3em;
  border-radius: 999px;
  font-weight: 600;
}
.nav-cta:after{ display: none; }
.nav-cta:hover{ background: var(--terracotta-dark); }

.nav-toggle{
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 34px; height: 34px;
  background: none; border: none; cursor: pointer;
  padding: 0;
}
.nav-toggle span{
  display: block; height: 2px; width: 100%;
  background: var(--ivory);
  transition: background .25s ease;
}
.site-header.is-solid .nav-toggle span{ background: var(--navy); }

/* ---------- Hero ---------- */
.hero{
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: flex-end;
  overflow: hidden;
}
.hero-bg{ position: absolute; inset: 0; }
.hero-bg img{
  width: 100%; height: 100%; object-fit: cover; object-position: center 30%;
}
.hero-scrim{
  position: absolute; inset: 0;
  background: linear-gradient(180deg, rgba(12,42,68,.35) 0%, rgba(12,42,68,.25) 40%, rgba(12,20,28,.82) 100%);
}
.hero-content{
  position: relative;
  z-index: 2;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px 100px;
  width: 100%;
  color: var(--ivory);
}
.hero-content h1{
  color: var(--white);
  font-size: clamp(2.6rem, 6vw, 4.6rem);
  line-height: 1.05;
  font-weight: 500;
  margin-bottom: .3em;
}
.hero-sub{
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.35rem;
  color: var(--ivory);
  margin-bottom: .6em;
}
.hero-desc{
  max-width: 46ch;
  font-size: 1.05rem;
  color: rgba(247,243,236,.88);
}
.hero-actions{ display: flex; gap: 16px; margin-top: 1.5em; flex-wrap: wrap; }

/* ---------- Sections ---------- */
.section{ padding: 120px 0; }
.section-alt{ background: var(--ivory-dim); }
.section-inner{ max-width: var(--container); margin: 0 auto; padding: 0 28px; }
.section-heading{ max-width: 720px; margin-bottom: 60px; }
.section-heading h2{ font-size: clamp(1.9rem, 3.4vw, 2.6rem); }

.grid-2{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.grid-2.reverse .col-media{ order: 2; }
.grid-2.reverse .col-text{ order: 1; }
.col-text h2{ font-size: clamp(1.9rem, 3.2vw, 2.5rem); }
.col-media img{ border-radius: var(--radius); width: 100%; height: 480px; object-fit: cover; }

.pull-quote{
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.3rem;
  color: var(--navy);
  border-left: 2px solid var(--terracotta);
  padding-left: 20px;
  margin-top: 1.6em;
}

.tag-list{
  list-style: none;
  padding: 0; margin: 1.6em 0 0;
  display: flex; flex-wrap: wrap; gap: 12px;
}
.tag-list li{
  border: 1px solid rgba(12,42,68,.25);
  color: var(--navy);
  padding: .5em 1.1em;
  border-radius: 999px;
  font-size: .88rem;
  font-weight: 500;
}

/* ---------- Intersection diagram ---------- */
.intersect-wrap{
  display: grid;
  grid-template-columns: 440px 1fr;
  gap: 64px;
  align-items: center;
}
.intersect-diagram{
  position: relative;
  height: 320px;
}
.circle{
  position: absolute;
  top: 50%;
  width: 260px; height: 260px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  mix-blend-mode: multiply;
}
.circle span{
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: .95rem;
  letter-spacing: .04em;
}
.circle-client{
  left: 40px; transform: translateY(-50%);
  background: rgba(196,106,69,.55);
  color: var(--white);
}
.circle-client span{ margin-right: 70px; }
.circle-property{
  left: 200px; transform: translateY(-50%);
  background: rgba(12,42,68,.55);
  color: var(--white);
}
.circle-property span{ margin-left: 70px; }
.circle-label{
  position: absolute;
  left: 50%; top: 50%;
  transform: translate(-50%,-50%);
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: .78rem;
  letter-spacing: .12em;
  color: var(--ivory);
  z-index: 3;
}
.intersect-copy{ font-size: 1.15rem; }
.intersect-copy em{ color: var(--terracotta-dark); font-style: normal; font-weight: 600; }

/* ---------- Process ---------- */
.process-grid{
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-bottom: 64px;
}
.process-card{
  padding: 28px 24px;
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid rgba(12,42,68,.08);
}
.process-num{
  font-family: var(--font-serif);
  color: var(--terracotta);
  font-size: 1.4rem;
  font-weight: 600;
}
.process-card h3{ margin-top: .4em; font-size: 1.2rem; }
.process-card p{ color: var(--taupe); font-size: .95rem; margin-bottom: 0; }

.process-media{
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}
.process-media img{
  width: 100%; height: 340px; object-fit: cover; border-radius: var(--radius);
}

/* ---------- Contact ---------- */
.contact-section{ background: var(--navy); color: var(--ivory); }
.contact-section .eyebrow{ color: var(--terracotta); }
.contact-section h2{ color: var(--white); }
.contact-section .body-lg{ color: rgba(247,243,236,.85); }
.contact-email{
  font-family: var(--font-serif);
  font-size: 1.3rem;
  color: var(--terracotta);
  margin-top: 1.4em;
}

.contact-form{ display: flex; flex-direction: column; gap: 18px; }
.field{ display: flex; flex-direction: column; gap: 8px; }
.field label{ font-size: .85rem; color: rgba(247,243,236,.75); }
.field input, .field select, .field textarea{
  background: rgba(247,243,236,.06);
  border: 1px solid rgba(247,243,236,.25);
  border-radius: var(--radius);
  padding: .8em 1em;
  color: var(--white);
  font-family: var(--font-sans);
  font-size: .95rem;
}
.field select option{ color: var(--ink); }
.field input:focus, .field select:focus, .field textarea:focus{
  outline: none; border-color: var(--terracotta);
}
.form-note{ font-size: .78rem; color: rgba(247,243,236,.55); margin-top: -6px; }

/* ---------- Footer ---------- */
.site-footer{ background: var(--navy); padding: 50px 0 34px; border-top: 1px solid rgba(247,243,236,.12); }
.footer-inner{
  max-width: var(--container); margin: 0 auto; padding: 0 28px;
  display: flex; flex-direction: column; align-items: flex-start; gap: 12px;
}
.footer-logo{ height: 20px; }
.footer-tagline{ font-family: var(--font-serif); font-style: italic; color: rgba(247,243,236,.7); }
.footer-meta{
  display: flex; gap: 24px; font-size: .82rem; color: rgba(247,243,236,.5);
  flex-wrap: wrap;
}
.footer-meta a{ color: rgba(247,243,236,.75); }
.footer-meta a:hover{ color: var(--terracotta); }

/* ---------- Reveal on scroll ---------- */
.section-inner{ opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.section-inner.is-visible{ opacity: 1; transform: translateY(0); }
.hero-content{ opacity: 0; transform: translateY(14px); transition: opacity .8s ease .1s, transform .8s ease .1s; }
.hero-content.is-visible{ opacity: 1; transform: translateY(0); }

/* ---------- Responsive ---------- */
@media (max-width: 980px){
  .grid-2, .grid-2.reverse{ grid-template-columns: 1fr; gap: 40px; }
  .grid-2.reverse .col-media{ order: 1; }
  .grid-2.reverse .col-text{ order: 2; }
  .process-grid{ grid-template-columns: 1fr 1fr; }
  .intersect-wrap{ grid-template-columns: 1fr; }
  .process-media{ grid-template-columns: 1fr; }
}

@media (max-width: 720px){
  .main-nav{
    position: fixed; top: 0; right: -100%; height: 100vh; width: 78%;
    background: var(--navy);
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    gap: 28px;
    padding: 40px;
    transition: right .35s ease;
  }
  .main-nav.is-open{ right: 0; }
  .main-nav a{ color: var(--ivory); font-size: 1.1rem; }
  .nav-toggle{ display: flex; }
  .site-header.is-solid .nav-toggle span,
  .nav-toggle span{ background: var(--ivory); }
  .site-header.is-solid ~ .hero .nav-toggle span{ background: var(--navy); }

  .section{ padding: 80px 0; }
  .process-grid{ grid-template-columns: 1fr; }
  .col-media img{ height: 300px; }
  .hero-content{ padding-bottom: 70px; }
}