/* =============================================================
   ASISTENTE VIRTUAL DE INFOCORP: burbuja y panel de chat.
   Hereda los tokens de la página: --bg, --ink, --muted, --line,
   --color-primary, --color-accent, --font-display, --font-body.
   Rojo para la acción, oro solo como detalle, bordes finos.
   ============================================================= */

/* ---------- burbuja ---------- */
.asistente-fab {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  z-index: 9998;
  width: 3.5rem;
  height: 3.5rem;
  display: grid;
  place-items: center;
  padding: 0;
  border: 1px solid color-mix(in oklch, var(--ink) 28%, transparent);
  border-radius: 50%;
  background: color-mix(in oklch, var(--ink) 7%, var(--bg));
  color: var(--ink);
  cursor: pointer;
  box-shadow: 0 8px 22px color-mix(in oklch, var(--bg) 60%, transparent);
  transition: border-color 0.3s ease, background-color 0.3s ease, opacity 0.6s ease, visibility 0.6s;
}

/* Mientras la página muestra su pantalla de carga, index.html oculta el asistente
   (regla .esperando-carga); al terminar aparece con el fundido de opacity de arriba. */

.asistente-fab svg { width: 1.5rem; height: 1.5rem; }

.asistente-fab:hover,
.asistente-fab[aria-expanded="true"] {
  border-color: var(--color-primary);
  background: color-mix(in oklch, var(--color-primary) 22%, var(--bg));
}

.asistente-fab:focus-visible,
.asistente-cerrar:focus-visible,
.asistente-enviar:focus-visible,
.asistente-wa:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
}

/* ---------- panel ---------- */
.asistente-panel {
  position: fixed;
  right: 1.5rem;
  bottom: 5.5rem;
  z-index: 9999;
  width: min(23.5rem, calc(100vw - 2rem));
  height: min(34rem, calc(100vh - 7.5rem));
  height: min(34rem, calc(100dvh - 7.5rem));
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 0.95rem;
  border: 1px solid color-mix(in oklch, var(--ink) 18%, transparent);
  border-radius: 1rem;
  box-shadow: 0 18px 60px color-mix(in oklch, var(--bg) 70%, transparent);
  opacity: 0;
  visibility: hidden;
  transform: translateY(14px);
  transition: opacity 0.28s ease, transform 0.28s cubic-bezier(0.22, 1, 0.36, 1), visibility 0.28s;
}

.asistente-panel.abierto { opacity: 1; visibility: visible; transform: none; }
.asistente-panel.sin-animacion { transition: none; }

/* ---------- cabecera ---------- */
.asistente-cabecera {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.9rem 1rem;
  border-bottom: 1px solid var(--line);
  flex-shrink: 0;
}

.asistente-marca { width: 2.5rem; height: 2.5rem; flex-shrink: 0; display: block; border-radius: 50%; }

.asistente-titulo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.15;
}

.asistente-subtitulo {
  margin-top: 0.2rem;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}

.asistente-cerrar {
  margin-left: auto;
  width: 2.125rem;
  height: 2.125rem;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  padding: 0;
  background: none;
  border: none;
  border-radius: 50%;
  color: var(--muted);
  cursor: pointer;
  transition: color 0.3s ease;
}

.asistente-cerrar svg { width: 1.05rem; height: 1.05rem; }
.asistente-cerrar:hover { color: var(--ink); }

/* ---------- conversación ---------- */
.asistente-mensajes {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding: 1.1rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  scrollbar-width: thin;
  scrollbar-color: var(--line) transparent;
}

.asistente-msg { max-width: 86%; }
.asistente-msg.usuario { align-self: flex-end; }
.asistente-msg.bot { align-self: flex-start; }

.asistente-texto {
  padding: 0.65rem 0.9rem;
  line-height: 1.5;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.asistente-msg.bot .asistente-texto {
  background: color-mix(in oklch, var(--ink) 7%, var(--bg));
  border-left: 2px solid var(--color-accent);
  border-radius: 0.25rem 0.9rem 0.9rem 0.25rem;
}

.asistente-msg.usuario .asistente-texto {
  background: var(--color-primary);
  color: var(--bg);
  border-radius: 0.9rem 0.9rem 0.25rem 0.9rem;
}

/* botón de WhatsApp que entrega el pedido ya escrito */
.asistente-wa {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.6rem;
  padding: 0.6rem 1rem;
  background: var(--color-primary);
  color: var(--bg);
  font-size: 0.875rem;
  font-weight: 700;
  text-decoration: none;
  white-space: nowrap;
  border-radius: 999px;
  transition: background-color 0.2s ease;
}

.asistente-wa svg { width: 1.1rem; height: 1.1rem; flex: none; }
.asistente-wa:hover { background: var(--color-primary-hover); }

/* ---------- escribiendo ---------- */
.asistente-escribiendo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 1rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  flex-shrink: 0;
}

.asistente-escribiendo[hidden] { display: none; }

.asistente-puntos { display: inline-flex; gap: 4px; }

.asistente-puntos span {
  width: 5px;
  height: 5px;
  display: block;
  border-radius: 50%;
  background: var(--color-primary);
  animation: asistente-latido 1.1s infinite ease-in-out;
}

.asistente-puntos span:nth-child(2) { animation-delay: 0.15s; }
.asistente-puntos span:nth-child(3) { animation-delay: 0.3s; }

@keyframes asistente-latido {
  0%, 60%, 100% { opacity: 0.22; }
  30% { opacity: 1; }
}

/* ---------- escribir ---------- */
.asistente-fila {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin: 0;
  padding: 0.8rem 1rem 0.5rem;
  border-top: 1px solid var(--line);
  flex-shrink: 0;
}

.asistente-campo {
  flex: 1 1 auto;
  min-width: 0;
  padding: 0.65rem 1rem;
  font-family: var(--font-body);
  /* 16px: con menos, iPhone hace zoom al tocar el campo */
  font-size: 1rem;
  color: var(--ink);
  background: none;
  border: 1px solid color-mix(in oklch, var(--ink) 22%, transparent);
  border-radius: 999px;
  transition: border-color 0.3s ease;
}

.asistente-campo::placeholder { color: var(--muted); }
.asistente-campo:focus { outline: none; border-color: var(--color-primary); }

.asistente-enviar {
  flex-shrink: 0;
  width: 2.625rem;
  height: 2.625rem;
  display: grid;
  place-items: center;
  padding: 0;
  background: var(--color-primary);
  border: none;
  border-radius: 50%;
  color: var(--bg);
  cursor: pointer;
  transition: background-color 0.2s ease, opacity 0.3s ease;
}

.asistente-enviar svg { width: 1.1rem; height: 1.1rem; }
.asistente-enviar:hover:not(:disabled) { background: var(--color-primary-hover); }
.asistente-enviar:disabled { opacity: 0.32; cursor: default; }

.asistente-nota {
  margin: 0;
  padding: 0 1rem 0.7rem;
  font-size: 0.7rem;
  line-height: 1.4;
  color: var(--muted);
  flex-shrink: 0;
}

/* ---------- celular: el panel casi a todo el ancho ---------- */
@media (max-width: 480px) {
  .asistente-fab { right: 1rem; bottom: 1rem; }

  .asistente-panel {
    right: 1rem;
    left: 1rem;
    bottom: 5rem;
    width: auto;
    height: min(34rem, calc(100vh - 6.5rem));
    height: min(34rem, calc(100dvh - 6.5rem));
  }
}

@media (prefers-reduced-motion: reduce) {
  .asistente-panel { transform: none; transition: opacity 0.2s ease, visibility 0.2s; }
  .asistente-puntos span { animation: none; opacity: 0.6; }
}