/* ============================================================
   AG Casco Histórico de Puente Alto · landing de presentación
   Sitio estático: sin dependencias, sin build, sin JavaScript.
   ============================================================ */

:root {
  --crema: #fefaf0;
  --marfil: #f7efdd;
  --arena: #b0a179;
  --dorado: #b88a45;
  --dorado-oscuro: #8a6530;
  --madera: #57381d;
  --chocolate: #391e14;
  --palmera: #365448;
  --tinta: #231713;
  --tinta-suave: #624c41;
  --linea: rgba(57, 30, 20, .14);
  --sombra: 0 18px 50px rgba(57, 30, 20, .09);

  --serif: "Cormorant Garamond", Georgia, serif;
  --display: "Cinzel", Georgia, serif;
  --sans: "Source Sans 3", system-ui, -apple-system, sans-serif;

  --ancho: 1120px;
  --radio: 18px;
}

*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--crema);
  color: var(--tinta);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a { color: var(--dorado-oscuro); }

.contenedor {
  width: min(var(--ancho), 100% - 40px);
  margin-inline: auto;
}

/* Para lectores de pantalla: enlace de salto al contenido. */
.salto {
  position: absolute;
  left: -9999px;
  padding: 12px 18px;
  background: var(--chocolate);
  color: var(--crema);
}
.salto:focus { left: 12px; top: 12px; z-index: 50; }

/* ─── Encabezado ─── */

.cabecera {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(254, 250, 240, .92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--linea);
}

.cabecera .contenedor {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 14px 0;
}

.marca {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}
.marca img { width: 44px; height: 44px; border-radius: 50%; }
.marca b {
  display: block;
  font-family: var(--display);
  font-size: 15px;
  letter-spacing: .14em;
  text-transform: uppercase;
  line-height: 1.2;
}
.marca span {
  font-size: 12px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--tinta-suave);
}

.menu {
  display: flex;
  align-items: center;
  gap: 26px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.menu a {
  color: var(--madera);
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  padding-bottom: 3px;
  border-bottom: 2px solid transparent;
}
.menu a:hover, .menu a:focus-visible { border-bottom-color: var(--dorado); }

/* ─── Botones ─── */

.boton {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  min-height: 50px;
  padding: 13px 26px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  text-decoration: none;
  transition: transform .18s ease, box-shadow .18s ease;
}
.boton:hover { transform: translateY(-2px); }

.boton.principal {
  background: var(--dorado);
  color: var(--chocolate);
  box-shadow: 0 10px 26px rgba(184, 138, 69, .32);
}
.boton.secundario {
  background: transparent;
  color: var(--madera);
  border: 1px solid var(--arena);
}
.boton.secundario:hover { background: var(--marfil); }

/* ─── Portada ─── */

.portada {
  position: relative;
  overflow: hidden;
  padding: clamp(56px, 9vw, 104px) 0;
  background:
    radial-gradient(circle at 82% 26%, rgba(184, 138, 69, .17), transparent 34%),
    linear-gradient(140deg, #f6f0e5 0%, #fffdf8 62%, #f0e3cf 100%);
}

.portada .contenedor {
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(260px, .88fr);
  gap: clamp(32px, 6vw, 76px);
  align-items: center;
}

.antetitulo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--dorado-oscuro);
}
.antetitulo::before {
  content: "";
  width: 7px;
  height: 7px;
  rotate: 45deg;
  background: var(--dorado);
}

.portada h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(2.6rem, 6.4vw, 4.3rem);
  font-weight: 600;
  line-height: 1.04;
  letter-spacing: -.02em;
}
.portada h1 em {
  display: block;
  margin-top: .12em;
  color: var(--palmera);
  font-size: .52em;
  font-weight: 500;
}

.portada p {
  max-width: 54ch;
  margin: 26px 0 0;
  color: var(--tinta-suave);
  font-size: clamp(1rem, 1.3vw, 1.14rem);
}

.acciones {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 34px;
}

.emblema { display: grid; place-items: center; }
.emblema img {
  width: min(330px, 78%);
  border-radius: 50%;
  box-shadow: var(--sombra);
}

/* ─── Secciones ─── */

section { padding: clamp(60px, 8vw, 104px) 0; }
section.alterna { background: var(--marfil); }

.titulo { max-width: 62ch; margin-bottom: 44px; }
.titulo.centrado { margin-inline: auto; text-align: center; }

.titulo h2 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(1.9rem, 3.8vw, 2.7rem);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -.015em;
}
.titulo p {
  margin: 14px 0 0;
  color: var(--tinta-suave);
}

/* ─── Cifras ─── */

.cifras {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 20px;
  margin-top: 44px;
  padding-top: 34px;
  border-top: 1px solid var(--linea);
}
.cifra b {
  display: block;
  font-family: var(--serif);
  font-size: clamp(2.2rem, 4vw, 3rem);
  font-weight: 600;
  line-height: 1;
  color: var(--chocolate);
}
.cifra span {
  display: block;
  margin-top: 8px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--madera);
}

/* ─── Pilares ─── */

.pilares {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 22px;
}

.pilar {
  padding: 32px 28px;
  background: #fffdf8;
  border: 1px solid var(--linea);
  border-radius: var(--radio);
  box-shadow: var(--sombra);
}
.pilar .numero {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  margin-bottom: 20px;
  border-radius: 50%;
  background: var(--marfil);
  color: var(--dorado-oscuro);
  font-family: var(--display);
  font-size: 15px;
  font-weight: 700;
}
.pilar h3 {
  margin: 0 0 10px;
  font-family: var(--serif);
  font-size: 1.45rem;
  font-weight: 600;
}
.pilar p { margin: 0; color: var(--tinta-suave); font-size: .97rem; }

/* ─── Historia ─── */

.hitos {
  display: grid;
  gap: 0;
  border-left: 2px solid var(--arena);
  padding-left: 30px;
}
.hito { padding-bottom: 34px; position: relative; }
.hito:last-child { padding-bottom: 0; }
.hito::before {
  content: "";
  position: absolute;
  left: -37px;
  top: 7px;
  width: 13px;
  height: 13px;
  rotate: 45deg;
  background: var(--crema);
  border: 2px solid var(--dorado);
}
.alterna .hito::before { background: var(--marfil); }
.hito b {
  display: block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--dorado-oscuro);
}
.hito h3 {
  margin: 6px 0 8px;
  font-family: var(--serif);
  font-size: 1.4rem;
  font-weight: 600;
}
.hito p { margin: 0; color: var(--tinta-suave); font-size: .97rem; }

/* ─── Cita ─── */

.cita {
  max-width: 44ch;
  margin: 0;
  padding: 34px;
  background: var(--chocolate);
  color: var(--marfil);
  border-radius: var(--radio);
}
.cita p {
  margin: 0;
  font-family: var(--serif);
  font-size: 1.35rem;
  font-style: italic;
  line-height: 1.4;
}
.cita footer {
  margin-top: 18px;
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--dorado);
}

.dos-columnas {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: clamp(30px, 5vw, 64px);
  align-items: start;
}

/* ─── Contacto ─── */

.contacto { background: var(--palmera); color: var(--marfil); }
.contacto .titulo h2 { color: var(--marfil); }
.contacto .titulo p { color: rgba(247, 239, 221, .82); }

.canales {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 18px;
}
.canal {
  display: block;
  padding: 26px;
  border: 1px solid rgba(247, 239, 221, .26);
  border-radius: var(--radio);
  color: inherit;
  text-decoration: none;
  transition: background .18s ease;
}
a.canal:hover { background: rgba(247, 239, 221, .09); }
.canal b {
  display: block;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--dorado);
}
.canal span {
  display: block;
  margin-top: 8px;
  font-family: var(--serif);
  font-size: 1.22rem;
}
.canal small {
  display: block;
  margin-top: 6px;
  font-size: .86rem;
  color: rgba(247, 239, 221, .72);
}

/* ─── Pie ─── */

.pie {
  padding: 40px 0;
  background: var(--chocolate);
  color: rgba(247, 239, 221, .76);
  font-size: .9rem;
}
.pie .contenedor {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 28px;
  align-items: center;
  justify-content: space-between;
}
.pie .lema {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.05rem;
  color: var(--dorado);
}

/* ─── Pantallas chicas ─── */

@media (max-width: 860px) {
  .portada .contenedor { grid-template-columns: 1fr; }
  .emblema { order: -1; }
  .emblema img { width: min(220px, 60%); }

  /* El menu no se esconde: con cuatro enlaces cabe envuelto bajo la marca,
     y asi no hace falta un boton de hamburguesa ni JavaScript. */
  .cabecera .contenedor {
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
  }
  .menu {
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px 18px;
  }
  .menu a { font-size: 12px; }
}

@media (max-width: 420px) {
  .marca span { font-size: 11px; }
  .marca b { font-size: 13px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition-duration: .01ms !important; }
  .boton:hover { transform: none; }
}