:root {
  --color-azul: #1e3a8a;
  --color-azul-oscuro: #0b3260;
  --color-acento: #2563eb;
  --color-negro: #0f172a;
  --color-gris: #475569;
  --color-gris-claro: #e2e8f0;
  --color-blanco: #ffffff;
}

* { box-sizing: border-box }
html { scroll-behavior: smooth }
body {
  margin: 0;
  font-family: 'Inter', system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, 'Fira Sans', 'Droid Sans', 'Helvetica Neue', Arial;
  color: var(--color-negro);
  background: #fff;
}
a { color: var(--color-azul); text-decoration: none }
img { max-width: 100%; display: block }
h1, h2, h3 { margin: 0 0 0.75rem; letter-spacing: -0.01em }
h1 { font-weight: 800 }
h2 { font-weight: 800 }
h3 { font-weight: 700 }

.contenedor { max-width: 1200px; margin: 0 auto; padding: 0 1rem }

.encabezado { position: sticky; top: 0; background: var(--color-blanco); border-bottom: 1px solid var(--color-gris-claro); z-index: 20 }
.encabezado-contenido { display: flex; align-items: center; justify-content: flex-start; max-width: 1200px; margin: 0 auto; padding: 1.5rem 1rem; gap: 0.75rem }
.logo { font-weight: 800; font-size: 1.1rem; color: var(--color-azul-oscuro) }
.logo-img { height: 72px; width: auto; display: block }
.navegacion-principal { flex: 1 }
.navegacion-principal ul { display: flex; gap: 1.25rem; list-style: none; margin: 0; padding: 0; justify-content: center }
.navegacion-principal a { color: var(--color-negro); position: relative; transition: color 180ms ease }
.navegacion-principal a::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -0.15rem;
  width: 0;
  height: 2px;
  background: var(--color-azul);
  transition: width 180ms ease;
}
.navegacion-principal a:hover { color: var(--color-azul) }
.navegacion-principal a:hover::after { width: 100% }
.tiene-submenu { position: relative }
.navegacion-principal .submenu-servicios {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--color-blanco);
  border: none;
  border-bottom: 1px solid var(--color-gris-claro);
  padding: 0.35rem 0.25rem;
  margin: 0;
  list-style: none;
  display: none;
  z-index: 30;
}
.navegacion-principal .submenu-servicios li a,
.submenu-servicios .submenu-servicios-nivel2 li a {
  display: block;
  padding: 0.45rem 0.8rem;
  color: var(--color-negro);
  font-size: 0.95rem;
}
.navegacion-principal .submenu-servicios li a:hover,
.submenu-servicios .submenu-servicios-nivel2 li a:hover { color: var(--color-azul) }
.submenu-servicios .tiene-submenu-nivel2 { position: relative }
.submenu-servicios .submenu-servicios-nivel2 {
  position: absolute;
  top: 0;
  left: 100%;
  min-width: 220px;
  background: var(--color-blanco);
  padding: 0.35rem 0.25rem;
  margin: 0;
  list-style: none;
  display: none;
  z-index: 30;
}
.boton-menu {
  display: none;
  background: #fff;
  color: var(--color-azul-oscuro);
  border: 1px solid var(--color-gris-claro);
  padding: 0.4rem 0.5rem;
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
  font-size: 1.3rem;
  line-height: 1;
  cursor: pointer;
  transition: background-color 160ms ease, box-shadow 160ms ease, transform 160ms ease;
}
.boton-menu:hover {
  background: #f3f4f6;
  box-shadow: 0 6px 18px rgba(0,0,0,0.12);
  transform: translateY(-1px);
}

.boton-cta,
.boton-solicitar,
.cta-telefono,
.cta-whatsapp {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  font-weight: 700;
}
.boton-cta { background: var(--color-acento); color: #fff; padding: 0.9rem 1.2rem; box-shadow: 0 8px 24px rgba(0,0,0,0.25) }
.boton-solicitar { background: var(--color-azul); color: #fff; border: none; padding: 0.6rem 1rem; border-radius: 6px; cursor: pointer; margin: 0.75rem auto 0 }
.cta-telefono { background: #2563eb; color: #fff; padding: 0.75rem 1rem }
.cta-whatsapp { background: #22c55e; color: #fff; padding: 0.75rem 1rem }

.whatsapp-flotante { position: fixed; right: 1rem; bottom: 1rem; display: inline-block; padding: 0; border: none; background: transparent; box-shadow: none; z-index: 50 }
.whatsapp-flotante img { display: block; width: 70px; height: 70px; transition: transform 160ms ease, filter 160ms ease }
.whatsapp-flotante:hover img { transform: translateY(-2px) scale(1.02); filter: brightness(1.05) }

@media (max-width: 768px) {
  .boton-menu { display: inline-block; margin-left: auto }
  .encabezado-contenido { position: relative }
  .navegacion-principal {
    position: absolute;
    left: 0;
    right: 0;
    top: 64px;
    background: #fff;
    border-bottom: 1px solid var(--color-gris-claro);
    box-shadow: 0 10px 30px rgba(0,0,0,0.10);
    opacity: 0;
    transform: translateY(-8px);
    pointer-events: none;
    max-height: 0;
    overflow: hidden;
    transition: opacity 180ms ease, transform 180ms ease, max-height 220ms ease;
  }
  .navegacion-principal.activo {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
    max-height: calc(100vh - 64px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
  }
  .navegacion-principal ul { flex-direction: column; gap: 0.25rem; padding: 0.75rem 1.25rem; justify-content: flex-start }
  .navegacion-principal li { padding: 0.15rem 0; transition: background-color 140ms ease }
  .navegacion-principal li a { display: block; padding: 0.5rem 0.25rem }
  .navegacion-principal li:hover { background: #f3f4f6 }
  .tiene-submenu > a,
  .tiene-submenu-nivel2 > a { padding-right: 1.2rem }
  .tiene-submenu > a::before,
  .tiene-submenu-nivel2 > a::before {
    content: '+';
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 1.2rem;
    color: var(--color-azul-oscuro);
  }
  .tiene-submenu.submenu-abierto > a::before,
  .tiene-submenu-nivel2.submenu-abierto > a::before { content: '-'; right: 0.1rem }
  .tiene-submenu { position: static }
  .navegacion-principal .submenu-servicios {
    position: static;
    border: none;
    box-shadow: none;
    padding: 0.15rem 0 0.5rem;
    margin-top: 0;
    background: #fff;
    display: none;
  }
  .navegacion-principal .submenu-servicios li a { padding-left: 0.9rem }
  .tiene-submenu.submenu-abierto .submenu-servicios { display: block }
  .submenu-servicios .tiene-submenu-nivel2 { position: static }
  .submenu-servicios .submenu-servicios-nivel2 {
    position: static;
    border: none;
    box-shadow: none;
    padding: 0.1rem 0 0.4rem;
    margin-top: 0;
    background: #fff;
    display: none;
  }
  .submenu-servicios .submenu-servicios-nivel2 li a { padding-left: 1.6rem }
  .tiene-submenu-nivel2.submenu-abierto > .submenu-servicios-nivel2 { display: block }
}

@media (min-width: 769px) {
  .tiene-submenu:hover .submenu-servicios,
  .tiene-submenu:focus-within .submenu-servicios { display: block }
  .submenu-servicios .tiene-submenu-nivel2:hover .submenu-servicios-nivel2,
  .submenu-servicios .tiene-submenu-nivel2:focus-within .submenu-servicios-nivel2 { display: block }
  .submenu-servicios .submenu-servicios-nivel2 { top: -0.35rem; left: 100%; margin-left: 0 }
  .tiene-submenu > a,
  .tiene-submenu-nivel2 > a { padding-right: 1.2rem }
}