/*----------------------- COACH - SIEMPRE FIJO ABAJO DERECHA ----------------- */
.coach {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: radial-gradient(circle, #a8c7ff, #6a8cff);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  opacity: 0;
  animation: float 2.5s ease-in-out infinite;
  transition: opacity 0.4s ease;
  z-index: 40;
  pointer-events: none;
}

/* En pantallas más grandes, el coach es más grande */
@media screen and (min-width: 768px) {
  .coach {
    bottom: 30px;
    right: 30px;
    width: 90px;
    height: 90px;
  }
}

@media screen and (min-width: 1024px) {
  .coach {
    bottom: 40px;
    right: 40px;
    width: 120px;
    height: 120px;
  }
}

@media screen and (min-width: 1400px) {
  .coach {
    bottom: 50px;
    right: 50px;
    width: 140px;
    height: 140px;
  }
}

.coach.visible {
  opacity: 0.9;
  pointer-events: auto;
}

.coach.visible .coach-bubble {
  opacity: 1;
  transform: scale(1);
}

/*----------------------- BURBUJA (por defecto a la izquierda) ----------------- */
.coach-bubble {
  position: absolute;
  bottom: 50%;
  right: 100%;
  transform: translateY(50%) scale(0.9);
  margin-right: 15px;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.98);
  color: #1e293b;
  border-radius: 16px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.15);
  opacity: 0;
  transition: all 0.25s ease;
  font-size: 12px;
  line-height: 1.4;
  pointer-events: none;
  width: 200px;
  max-width: 60vw;
  min-width: 150px;
}

/* Flecha hacia la derecha (posición izquierda) */
.coach-bubble::after {
  content: '';
  position: absolute;
  right: -7px;
  bottom: 15px;
  width: 0;
  height: 0;
  border-left: 7px solid rgba(255, 255, 255, 0.98);
  border-top: 5px solid transparent;
  border-bottom: 5px solid transparent;
}

/* Tamaños responsivos de la burbuja */
@media screen and (min-width: 768px) {
  .coach-bubble {
    padding: 12px 16px;
    font-size: 13px;
    width: 240px;
    max-width: 55vw;
    min-width: 180px;
    border-radius: 18px;
  }
  
  .coach-bubble::after {
    right: -8px;
    bottom: 18px;
    border-left-width: 8px;
    border-top-width: 6px;
    border-bottom-width: 6px;
  }
}

@media screen and (min-width: 1024px) {
  .coach-bubble {
    padding: 14px 18px;
    font-size: 14px;
    width: 280px;
    max-width: 50vw;
    min-width: 200px;
    border-radius: 20px;
  }
  
  .coach-bubble::after {
    right: -9px;
    bottom: 20px;
    border-left-width: 9px;
  }
}

@media screen and (min-width: 1400px) {
  .coach-bubble {
    padding: 16px 20px;
    font-size: 15px;
    width: 320px;
    max-width: 25vw;
    min-width: 240px;
    border-radius: 24px;
  }
  
  .coach-bubble::after {
    right: -10px;
    bottom: 22px;
    border-left-width: 10px;
    border-top-width: 8px;
    border-bottom-width: 8px;
  }
}

/*----------------------- CUANDO NO CABE A LA IZQUIERDA: BURBUJA ARRIBA ----------------- */
.coach.bubble-top .coach-bubble {
  bottom: 100%;
  right: 0;
  top: auto;
  left: auto;
  transform: scale(0.9);
  margin-right: 0;
  margin-bottom: 15px;
}

.coach.visible.bubble-top .coach-bubble {
  transform: scale(1);
}

/* Flecha hacia ABAJO (cuando la burbuja está arriba) - rotada 180 grados */
.coach.bubble-top .coach-bubble::after {
  right: 20px;
  top: auto;
  bottom: -7px;
  left: auto;
  transform: none;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 7px solid rgba(255, 255, 255, 0.98);
  border-bottom: none;
}

@media screen and (min-width: 768px) {
  .coach.bubble-top .coach-bubble {
    margin-bottom: 18px;
  }
  
  .coach.bubble-top .coach-bubble::after {
    bottom: -8px;
    border-top-width: 8px;
    border-left-width: 6px;
    border-right-width: 6px;
  }
}

/* Modo oscuro */
html.dark .coach-bubble {
  background: rgba(30, 41, 59, 0.98);
  color: #f1f5f9;
}

html.dark .coach-bubble::after {
  border-left-color: rgba(30, 41, 59, 0.98);
}

html.dark .coach.bubble-top .coach-bubble::after {
  border-top-color: rgba(30, 41, 59, 0.98);
  border-left-color: transparent;
}

/* Animación */
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-8px); }
}