:root {
  --azul-gt: #1e5aa8;
  --azul-claro: #4997d0;
  --azul-oscuro: #123b73;
  --dorado: #c9a227;
  --blanco: #ffffff;
  --gris-fondo: #f5f7fa;
  --gris-texto: #33404e;
  --gris-borde: #dde3ea;
  --verde-whatsapp: #25d366;
  --rojo-error: #c0392b;
  --radio: 12px;
  --sombra: 0 8px 24px rgba(18, 59, 115, 0.12);
  --fuente: "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--fuente);
  color: var(--gris-texto);
  background: var(--gris-fondo);
  line-height: 1.55;
}

a { color: inherit; }

.contenedor {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Header ---------- */
header.principal {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--blanco);
  border-bottom: 1px solid var(--gris-borde);
}

.barra-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  max-width: 1080px;
  margin: 0 auto;
}

.marca {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--azul-oscuro);
  text-decoration: none;
}

.marca .simbolo {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--azul-gt), var(--azul-claro));
  color: var(--blanco);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  font-weight: 800;
}

nav.enlaces { display: flex; gap: 22px; align-items: center; }
nav.enlaces a { text-decoration: none; color: var(--gris-texto); font-weight: 600; font-size: 0.95rem; }
nav.enlaces a:hover { color: var(--azul-gt); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}
.btn:hover { transform: translateY(-1px); }
.btn-primario { background: var(--azul-gt); color: var(--blanco); box-shadow: var(--sombra); }
.btn-primario:hover { background: var(--azul-oscuro); }
.btn-whatsapp { background: var(--verde-whatsapp); color: var(--blanco); }
.btn-whatsapp:hover { background: #1ebe57; }
.btn-secundario { background: var(--blanco); color: var(--azul-gt); border: 2px solid var(--azul-gt); }

/* ---------- Hero ---------- */
.hero {
  background: radial-gradient(circle at top right, var(--azul-claro) 0%, var(--azul-gt) 45%, var(--azul-oscuro) 100%);
  color: var(--blanco);
  padding: 72px 24px 96px;
  text-align: center;
}
.hero .bandera { font-size: 2.4rem; margin-bottom: 6px; }
.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  margin: 0 0 14px;
  font-weight: 800;
  letter-spacing: -0.5px;
}
.hero p.slogan {
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  max-width: 640px;
  margin: 0 auto 34px;
  color: rgba(255,255,255,0.92);
}
.hero .acciones { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

/* ---------- Secciones ---------- */
section { padding: 72px 24px; }
section.alterna { background: var(--blanco); }

.titulo-seccion {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 44px;
}
.titulo-seccion .etiqueta {
  color: var(--azul-gt);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-size: 0.8rem;
}
.titulo-seccion h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); margin: 8px 0 10px; color: var(--azul-oscuro); }
.titulo-seccion p { color: #5a6b7d; }

.tarjetas {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 24px;
  max-width: 1000px;
  margin: 0 auto;
}
.tarjeta {
  background: var(--blanco);
  border: 1px solid var(--gris-borde);
  border-radius: var(--radio);
  padding: 28px 24px;
  text-align: left;
}
.tarjeta .icono { font-size: 1.8rem; margin-bottom: 12px; }
.tarjeta h3 { margin: 0 0 8px; color: var(--azul-oscuro); font-size: 1.05rem; }
.tarjeta p { margin: 0; color: #5a6b7d; font-size: 0.94rem; }

/* ---------- WhatsApp CTA ---------- */
.cta-whatsapp {
  background: linear-gradient(120deg, #128c4d, var(--verde-whatsapp));
  color: var(--blanco);
  border-radius: 20px;
  padding: 40px 32px;
  max-width: 1000px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}
.cta-whatsapp h3 { margin: 0 0 6px; font-size: 1.3rem; }
.cta-whatsapp p { margin: 0; color: rgba(255,255,255,0.9); }

.whatsapp-flotante {
  position: fixed;
  bottom: 22px;
  right: 22px;
  z-index: 60;
  width: 58px;
  height: 58px;
  border-radius: 50%;
  background: var(--verde-whatsapp);
  color: var(--blanco);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  box-shadow: 0 6px 18px rgba(0,0,0,0.25);
  text-decoration: none;
}

/* ---------- Formulario ---------- */
.formulario-wrap {
  background: var(--blanco);
  border-radius: 20px;
  box-shadow: var(--sombra);
  max-width: 760px;
  margin: 0 auto;
  padding: 40px;
  border: 1px solid var(--gris-borde);
}
.grid-formulario {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}
.grid-formulario .ancho-completo { grid-column: 1 / -1; }
.campo { display: flex; flex-direction: column; gap: 6px; }
.campo label { font-size: 0.86rem; font-weight: 600; color: var(--azul-oscuro); }
.campo .requerido { color: var(--rojo-error); }
.campo input, .campo select, .campo textarea {
  padding: 11px 13px;
  border: 1px solid var(--gris-borde);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: inherit;
}
.campo input:focus, .campo select:focus, .campo textarea:focus {
  outline: none;
  border-color: var(--azul-gt);
  box-shadow: 0 0 0 3px rgba(30,90,168,0.15);
}
.campo textarea { resize: vertical; min-height: 80px; }
.campo-checkbox { display: flex; align-items: flex-start; gap: 10px; font-size: 0.88rem; color: #5a6b7d; }
.campo-checkbox input { margin-top: 3px; }

.honeypot { position: absolute; left: -9999px; opacity: 0; height: 0; overflow: hidden; }

.mensaje-formulario {
  margin-top: 18px;
  padding: 14px 16px;
  border-radius: 10px;
  font-size: 0.92rem;
  display: none;
}
.mensaje-formulario.exito { display: block; background: #e7f7ee; color: #146c43; border: 1px solid #b8e6cc; }
.mensaje-formulario.error { display: block; background: #fdecea; color: var(--rojo-error); border: 1px solid #f5c6c2; }

/* ---------- Footer ---------- */
footer {
  background: var(--azul-oscuro);
  color: rgba(255,255,255,0.85);
  padding: 40px 24px;
  text-align: center;
  font-size: 0.88rem;
}
footer a { color: var(--dorado); text-decoration: none; font-weight: 600; }

@media (max-width: 640px) {
  .grid-formulario { grid-template-columns: 1fr; }
  .barra-nav { flex-wrap: wrap; gap: 12px; }
  nav.enlaces { order: 3; width: 100%; justify-content: center; gap: 16px; }
}