:root {
  --verde: #1E8449;
  --verde-oscuro: #12522C;
  --terracota: #B5502E;
  --terracota-oscuro: #7A3319;
  --crema: #F5F0E6;
  --crema-2: #ECE3D0;
  --tinta: #20261F;
  --tinta-suave: #4B5346;
  --blanco: #FFFFFF;
  --radius: 18px;
  --font-display: 'Fraunces', Georgia, serif;
  --font-body: 'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --shadow: 0 12px 32px -12px rgba(18, 82, 44, 0.35);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--tinta);
  background: var(--crema);
  line-height: 1.55;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--font-display); line-height: 1.12; margin: 0 0 .5em; }
h1 { font-size: clamp(2.1rem, 4.5vw, 3.4rem); }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.5rem); }
h3 { font-size: 1.15rem; margin-bottom: .4em; }
p { margin: 0 0 1em; }
.wrap { max-width: 1120px; margin: 0 auto; padding: 0 24px; }

.skip-link {
  position: absolute; left: -999px; top: 0; background: var(--verde); color: #fff;
  padding: 10px 16px; z-index: 200; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---------- Header ---------- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(245, 240, 230, 0.9);
  backdrop-filter: saturate(160%) blur(10px);
  border-bottom: 1px solid rgba(30, 132, 73, 0.12);
}
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--verde); }
.brand-icon { width: 34px; height: 34px; flex-shrink: 0; }
.brand-text { font-family: var(--font-display); font-weight: 700; font-size: 1rem; line-height: 1.1; color: var(--verde-oscuro); }
.site-nav { display: flex; gap: 28px; }
.site-nav a {
  text-decoration: none; font-weight: 600; font-size: .95rem; color: var(--tinta-suave);
  position: relative; padding: 4px 0;
}
.site-nav a:hover { color: var(--verde-oscuro); }
.site-nav a::after {
  content: ''; position: absolute; left: 0; right: 100%; bottom: -2px; height: 2px;
  background: var(--terracota); transition: right .2s ease;
}
.site-nav a:hover::after { right: 0; }

.nav-toggle {
  display: none; flex-direction: column; justify-content: center; gap: 5px;
  width: 40px; height: 40px; background: none; border: none; cursor: pointer;
}
.nav-toggle span { display: block; height: 2px; background: var(--verde-oscuro); border-radius: 2px; }
.mobile-nav {
  display: none; flex-direction: column; padding: 8px 24px 20px;
  background: var(--crema);
}
.mobile-nav a { padding: 10px 0; text-decoration: none; font-weight: 600; color: var(--tinta); border-bottom: 1px solid rgba(0,0,0,.06); }

@media (max-width: 780px) {
  .site-nav { display: none; }
  .nav-toggle { display: flex; }
  .mobile-nav.open { display: flex; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  padding: 14px 26px; border-radius: 999px; font-weight: 700; font-size: .95rem;
  text-decoration: none; border: 2px solid transparent; cursor: pointer;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--terracota); color: #fff; box-shadow: 0 10px 24px -10px rgba(181, 80, 46, 0.6); }
.btn-primary:hover { background: var(--terracota-oscuro); }
.btn-ghost { border-color: currentColor; color: var(--verde-oscuro); background: transparent; }
.btn-ghost:hover { background: rgba(30,132,73,.08); }
.btn-ghost-light { border-color: rgba(255,255,255,.55); color: #fff; background: transparent; }
.btn-ghost-light:hover { background: rgba(255,255,255,.12); border-color: #fff; }
.btn-block { width: 100%; }
.btn-sm { padding: 10px 18px; font-size: .85rem; }

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; background: var(--verde-oscuro); padding: 64px 0 0; color: #fff; }
.hero-bg { position: absolute; inset: 0; overflow: hidden; }
.hero-leaf { position: absolute; border-radius: 50%; filter: blur(60px); opacity: .35; }
.leaf-a { width: 420px; height: 420px; background: var(--verde); top: -160px; right: -120px; }
.leaf-b { width: 320px; height: 320px; background: var(--terracota); bottom: -140px; left: -100px; }
.hero-grid { position: relative; display: grid; grid-template-columns: 1.2fr .8fr; gap: 48px; align-items: center; padding-bottom: 70px; }
.eyebrow { text-transform: uppercase; letter-spacing: .12em; font-weight: 800; font-size: .78rem; color: #E9C77B; margin: 0 0 14px; }
.eyebrow-dark { color: var(--terracota); }
.eyebrow-light { color: #E9C77B; }
.hero h1 { color: #fff; }
.lede { font-size: 1.08rem; color: rgba(255,255,255,.85); max-width: 46ch; }
.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; margin-top: 8px; }
.hero-art { display: flex; justify-content: center; }
.house-card {
  width: 240px; height: 240px; border-radius: 32px;
  background: linear-gradient(155deg, var(--verde), var(--verde-oscuro));
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow);
}
.house-card svg { width: 130px; height: 130px; }
.roofline { display: block; width: 100%; height: 44px; }
.roofline-flip { transform: scaleY(-1); }

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; text-align: center; }
  .hero-actions { justify-content: center; }
  .lede { margin-left: auto; margin-right: auto; }
}

/* ---------- Sections ---------- */
.section { padding: 88px 0; position: relative; }
.section-cream { background: var(--crema); }
.section-dark { background: var(--verde-oscuro); color: #fff; }
.section-terracota { background: linear-gradient(135deg, var(--terracota), var(--terracota-oscuro)); color: #fff; }
#frentes { padding-bottom: 0; }
#frentes .roofline { margin-top: 44px; }
.light { color: #fff; }
.section-lede { max-width: 62ch; font-size: 1.05rem; }
.section-lede.light { color: rgba(255,255,255,.85); }

/* Legal cards */
.legal-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin: 32px 0 56px; }
.legal-card {
  background: var(--blanco); border-radius: var(--radius); padding: 28px 24px;
  border: 1px solid rgba(30,132,73,.12); box-shadow: 0 8px 24px -16px rgba(0,0,0,.2);
}
.legal-num { display: block; font-family: var(--font-display); font-weight: 700; font-size: 1.6rem; color: var(--terracota); margin-bottom: 10px; }
.legal-card p { margin: 0; color: var(--tinta-suave); font-size: .95rem; }

.principios { background: var(--verde-oscuro); color: #fff; border-radius: 24px; padding: 40px; }
.principios h3 { color: #fff; }
.principios-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.principios-list li {
  background: rgba(255,255,255,.08); border-radius: 12px; padding: 16px; font-size: .95rem;
  border: 1px solid rgba(255,255,255,.14);
}

@media (max-width: 780px) {
  .legal-grid { grid-template-columns: 1fr; }
  .principios-list { grid-template-columns: repeat(2, 1fr); }
}

/* 7 frentes */
.frentes-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 40px; }
.frente-card {
  background: linear-gradient(160deg, rgba(255,255,255,.09), rgba(255,255,255,.02));
  border: 1px solid rgba(255,255,255,.14); border-radius: var(--radius); padding: 24px;
}
.frente-card h3 { color: #fff; }
.frente-card p { color: rgba(255,255,255,.78); font-size: .92rem; margin: 0; }
.frente-num { font-family: var(--font-display); font-size: 1.3rem; color: #E9C77B; font-weight: 700; }
.frente-cta {
  display: flex; flex-direction: column; justify-content: center; gap: 14px;
  background: var(--terracota); border: none;
}
.frente-cta h3 { color: #fff; margin: 0; }

@media (max-width: 980px) { .frentes-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .frentes-grid { grid-template-columns: 1fr; } }

/* Alianzas */
.alianzas-grid { display: grid; grid-template-columns: 1.4fr .6fr; gap: 40px; align-items: center; }
.alianzas-badge { display: flex; justify-content: center; }
.alianzas-badge svg { width: 160px; height: 160px; }
@media (max-width: 780px) { .alianzas-grid { grid-template-columns: 1fr; text-align: center; } .alianzas-badge { order: -1; } }

/* Buzón */
.buzon-grid { display: grid; grid-template-columns: .9fr 1.1fr; gap: 56px; align-items: start; }
.buzon-points { margin: 20px 0 0; padding-left: 20px; color: var(--tinta-suave); }
.buzon-points li { margin-bottom: 8px; }
.buzon-form {
  background: var(--blanco); border-radius: 24px; padding: 32px;
  box-shadow: var(--shadow); border: 1px solid rgba(30,132,73,.1);
}
.field { margin-bottom: 18px; display: flex; flex-direction: column; gap: 6px; }
.field label { font-weight: 700; font-size: .88rem; color: var(--verde-oscuro); }
.field .opt, .field .req { font-weight: 500; color: var(--tinta-suave); }
.field .req { color: var(--terracota); }
.field input, .field select, .field textarea {
  font-family: var(--font-body); font-size: .96rem; padding: 12px 14px; border-radius: 12px;
  border: 1.5px solid #DCD4C0; background: #FBF9F4; color: var(--tinta);
}
.field input:focus, .field select:focus, .field textarea:focus {
  outline: none; border-color: var(--verde); box-shadow: 0 0 0 3px rgba(30,132,73,.15);
}
.hp-field { position: absolute; left: -9999px; top: -9999px; }
.form-status { min-height: 1.4em; font-weight: 700; font-size: .9rem; margin: 12px 0 0; }
.form-status.ok { color: var(--verde-oscuro); }
.form-status.err { color: var(--terracota-oscuro); }

@media (max-width: 860px) { .buzon-grid { grid-template-columns: 1fr; } }

/* Contacto */
.contacto-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.social-row { display: flex; flex-direction: column; gap: 14px; margin-top: 24px; }
.social-btn {
  display: inline-flex; align-items: center; gap: 12px; text-decoration: none; color: #fff;
  background: rgba(255,255,255,.08); border: 1px solid rgba(255,255,255,.18);
  padding: 14px 18px; border-radius: 14px; font-weight: 700; transition: background .15s ease;
  max-width: fit-content;
}
.social-btn:hover { background: rgba(255,255,255,.16); }
.social-btn svg { width: 22px; height: 22px; color: #E9C77B; flex-shrink: 0; }
.social-btn-whatsapp { background: rgba(37, 211, 102, .16); border-color: rgba(37, 211, 102, .4); }
.social-btn-whatsapp:hover { background: rgba(37, 211, 102, .28); }
.social-btn-whatsapp svg { color: #25D366; }
.contact-card {
  background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.15);
  border-radius: var(--radius); padding: 28px;
}
.contact-card h3 { color: #fff; }
.contact-card p { color: rgba(255,255,255,.8); margin: 0; }
.contact-card a { color: #E9C77B; font-weight: 700; text-decoration: underline; }

@media (max-width: 780px) { .contacto-grid { grid-template-columns: 1fr; } }

/* Footer */
.site-footer { background: var(--tinta); color: rgba(255,255,255,.7); padding: 32px 0; }
.footer-inner { display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.brand-footer { color: #E9C77B; }
.brand-footer span { font-family: var(--font-display); font-weight: 700; }
.footer-fine { margin: 0; font-size: .85rem; }

/* Reveal-on-scroll */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in-view { opacity: 1; transform: translateY(0); }