:root{
  --brand:#4B5563; /* gris neutro */
  --brand-hover:#374151;
  --text:#0f172a;
  --ring:#e5e7eb;
}

/* === BOTÓN FLOTANTE === */
#ac-booking-cta{
  position: fixed;
  left: 16px;
  bottom: 16px;
  z-index: 9998;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 20px;
  border-radius: 999px;
  border: 1px solid var(--ring);
  background: var(--brand);
  color: #fff;
  font: 500 14px/1 system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;
  text-decoration: none;
  cursor: pointer;
  box-shadow: 0 6px 16px rgba(0,0,0,.2);
  transition: background .2s, transform .08s;
}
#ac-booking-cta:hover{ background: var(--brand-hover); }
#ac-booking-cta:active{ transform: translateY(1px); }

/* === OVERLAY === */
#ac-booking-overlay{
  position: fixed; inset: 0;
  display: none;
  z-index: 9999;
  background: rgba(0,0,0,.55);
  backdrop-filter: blur(6px);
}

/* === MODAL === */
#ac-booking-modal{
  position: absolute;
  left: 50%; top: 50%;
  transform: translate(-50%, -50%);
  width: min(920px, 96vw);
  height: min(620px, 92vh);
  background: #fff;
  border-radius: 14px;
  box-shadow: 0 30px 60px rgba(0,0,0,.3);
  display: grid;
  grid-template-rows: 48px 1fr;
  overflow: hidden;
}

/* Cabecera modal */
#ac-booking-head{
  display:flex; align-items:center; justify-content:space-between;
  padding: 0 14px;
  background:#f9fafb;
  border-bottom:1px solid var(--ring);
  font: 500 14px system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;
}
#ac-booking-close{
  border:none; border-radius:8px; background:#fff; padding:6px 10px;
  cursor:pointer; font: 400 13px system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial;
  border:1px solid var(--ring);
}
#ac-booking-close:hover{ background:#f3f4f6; }

#ac-booking-iframe{
  width:100%; height:100%; border:0;
}