/* ==========================================================================
   MODO — WhatsApp
   Botón flotante siempre presente y aviso propio mientras no haya número.
   ========================================================================== */

.wa {
  position: fixed;
  right: clamp(1rem, 2.4vw, 2rem);
  /* Se suma el área segura del teléfono para que no quede debajo de la
     barra inferior del navegador */
  bottom: calc(clamp(1rem, 2.4vw, 2rem) + env(safe-area-inset-bottom, 0px));
  z-index: 450;
  display: grid;
  place-items: center;
  width: clamp(54px, 5vw, 64px);
  aspect-ratio: 1;
  padding: 0;
  border: 0;
  background: none;
  /* Sombra en dos capas: una abierta para despegarlo del fondo y otra
     corta pegada al contorno, que le da definición sobre el azul. */
  filter: drop-shadow(0 8px 18px rgba(0, 10, 34, 0.45))
          drop-shadow(0 2px 4px rgba(0, 10, 34, 0.3));
  transition: transform var(--t-med) var(--ease),
              filter var(--t-med) var(--ease-soft);
}

.wa img {
  width: 100%;
  height: auto;
  display: block;
}

.wa:hover {
  transform: translateY(-3px) scale(1.06);
  filter: drop-shadow(0 14px 26px rgba(0, 10, 34, 0.5))
          drop-shadow(0 3px 6px rgba(0, 10, 34, 0.35));
}
.wa:active { transform: translateY(0) scale(1); }

.wa:focus-visible {
  outline: 2px solid var(--lima);
  outline-offset: 4px;
  border-radius: 50%;
}

/* --------------------------------------------------------------------------
   Aviso — modal propio, nunca un cartel del navegador
   -------------------------------------------------------------------------- */
.wa-aviso {
  position: fixed;
  inset: 0;
  z-index: 500;
  display: grid;
  place-items: center;
  padding: var(--gutter);
  background-color: rgba(0, 20, 51, 0.72);
  -webkit-backdrop-filter: blur(6px);
          backdrop-filter: blur(6px);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--t-med) var(--ease-soft),
              visibility 0s linear var(--t-med);
}
.wa-aviso.esta-abierto {
  opacity: 1;
  visibility: visible;
  transition-delay: 0s;
}

.wa-aviso__caja {
  position: relative;
  width: min(100%, 420px);
  padding: clamp(2rem, 4vw, 2.75rem);
  text-align: center;
  background-color: var(--azul-oscuro);
  border: 1px solid var(--borde-tenue);
  border-radius: var(--r-lg);
  transform: translateY(12px) scale(0.98);
  transition: transform var(--t-med) var(--ease);
}
.wa-aviso.esta-abierto .wa-aviso__caja { transform: none; }


.wa-aviso__texto {
  font-family: var(--font-display);
  font-size: clamp(1.125rem, 1.8vw, 1.375rem);
  font-weight: 600;
  line-height: 1.32;
  letter-spacing: -0.012em;
  color: var(--blanco);
  margin-bottom: var(--sp-2);
}

.wa-aviso__detalle {
  font-size: 0.9375rem;
  font-weight: 300;
  line-height: var(--lh-normal);
  color: var(--texto-tenue);
  margin-bottom: var(--sp-5);
}

.wa-aviso__cerrar {
  width: 100%;
  justify-content: center;
}

@media (max-width: 767px) {
  .wa { width: 52px; }
}

@media (prefers-reduced-motion: reduce) {
  .wa, .wa-aviso, .wa-aviso__caja { transition: none; }
  .wa:hover { transform: none; }
}