h1 {
    font-size: 2.4rem;
    color: var(--color-principal); /* color-principal */
    margin-bottom: 20px;
    user-select: none;
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
  }
  h1 i {
    color: var(--color-secundario); /* color-secundario */
    font-size: 2.6rem;
  }

  /* Contenedor principal */
  .chatbot-container {
    background: var(--color-blanco); /* color-blanco */
    border-radius: 12px;
    width: 100%;
    max-width: 720px;
    box-shadow: 0 10px 30px rgba(0, 95, 153, 0.2); /* sombra azul suave */
    padding: 25px 30px;
  }

  /* Categorías */
  .categories {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 25px;
    justify-content: center;
  }
  .categories button {
    background: var(--color-principal); /* color-principal */
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 40px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 3px 8px rgba(0, 95, 153, 0.6);
    transition: background-color 0.3s ease;
    user-select: none;
  }
  .categories button:hover,
  .categories button.active {
    background: var(--color-secundario); /* color-secundario */
    color: #fff;
    box-shadow: 0 3px 10px rgba(255, 102, 0, 0.7);
  }

  /* Lista de preguntas */
  .questions-list {
    list-style: none;
    max-height: 420px;
    overflow-y: auto;
    padding-right: 10px;
  }
  .questions-list li {
    background: #e6f0f8; /* fondo azul claro */
    margin-bottom: 15px;
    border-radius: 12px;
    overflow: hidden;
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    transition: background-color 0.3s ease;
  }
  .questions-list li:hover {
    background: #d0e6fc;
  }
  .questions-list li .question {
    padding: 18px 24px;
    font-weight: 600;
    position: relative;
    color: #005f99;
  }
  .questions-list li .question::after {
    content: "\f107"; /* FontAwesome chevron down */
    font-family: "Font Awesome 5 Free";
    font-weight: 900;
    position: absolute;
    right: 24px;
    top: 50%;
    transform: translateY(-50%);
    transition: transform 0.3s ease;
    color: #ff6600;
    font-size: 1.1rem;
  }
  .questions-list li.open .question::after {
    transform: translateY(-50%) rotate(180deg);
  }

  /* Respuesta (oculta inicialmente) */
  .answer {
    background: #f9fbfd;
    padding: 18px 24px;
    font-size: 1rem;
    line-height: 1.5;
    color: #333;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition:
      max-height 0.4s ease,
      opacity 0.3s ease;
  }
  .questions-list li.open .answer {
    max-height: 400px;
    opacity: 1;
  }

  /* Scrollbar estilizada para questions-list */
  .questions-list::-webkit-scrollbar {
    width: 8px;
  }
  .questions-list::-webkit-scrollbar-thumb {
    background: #005f99;
    border-radius: 4px;
  }
  .questions-list::-webkit-scrollbar-track {
    background: #f0f4f8;
  }

  /* Botón volver */
  .back-btn {
    margin-top: 30px;
    background: #005f99;
    border: none;
    padding: 14px 32px;
    border-radius: 40px;
    font-weight: 700;
    color: #fff;
    cursor: pointer;
    box-shadow: 0 4px 12px rgba(0, 95, 153, 0.6);
    user-select: none;
    transition: background-color 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 1.1rem;
  }
  .back-btn:hover {
    background: #ff6600;
    box-shadow: 0 4px 15px rgba(255, 102, 0, 0.8);
  }
  .back-btn i {
    font-size: 1.3rem;
  }

  /* Responsive */
  /* ======= ESTILOS RESPONSIVOS ======= */

/* --- Móviles pequeños (≤ 480px) --- */
@media (max-width: 480px) {
  body {
    padding: 10px;
  }

  h1 {
    font-size: 1.5rem;
    text-align: center;
  }

  h1 i {
    font-size: 1.8rem;
  }

  .chatbot-container {
    padding: 15px;
    max-width: 100%;
  }

  .categories {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
  }

  .categories button {
    padding: 8px 12px;
    font-size: 0.85rem;
    flex: 1 1 calc(50% - 8px);
  }

  .questions-list li .question {
    padding: 12px 14px;
    font-size: 0.9rem;
  }

  .answer {
    font-size: 0.85rem;
    padding: 12px 14px;
  }

  .back-btn {
    padding: 10px 20px;
    font-size: 0.9rem;
  }
}

/* --- Tablets (481px - 768px) --- */
@media (min-width: 481px) and (max-width: 768px) {
  body {
    padding: 15px;
  }

  h1 {
    font-size: 1.8rem;
  }

  .chatbot-container {
    padding: 20px;
    max-width: 90%;
    margin: auto;
  }

  .categories {
    gap: 10px;
  }

  .categories button {
    padding: 10px 18px;
    font-size: 0.95rem;
  }

  .questions-list li .question {
    padding: 14px 18px;
    font-size: 0.95rem;
  }

  .answer {
    font-size: 0.9rem;
    padding: 14px 18px;
  }

  .back-btn {
    padding: 12px 26px;
    font-size: 1rem;
  }
}

/* --- Pantallas grandes (≥ 1024px) --- */
@media (min-width: 1024px) {
  .chatbot-container {
    max-width: 900px;
    margin: auto;
  }

  .categories {
    gap: 12px;
  }

  .categories button {
    padding: 12px 22px;
    font-size: 1rem;
  }

  .questions-list li .question {
    font-size: 1rem;
    padding: 16px 22px;
  }

  .answer {
    font-size: 1rem;
    padding: 16px 22px;
  }

  .back-btn {
    padding: 14px 30px;
    font-size: 1.05rem;
  }
}


  #main-content-chatbot{
    margin-top: 40px;
  }

/* Contenedor centrado para el título */
.titulo-container {
    display: flex;
    justify-content: center;
    text-align: center;
    padding: 10px;
}

.titulo-container h1 {
    white-space: nowrap; /* Evita saltos de línea */
    font-size: clamp(18px, 4vw, 36px); /* Escala según pantalla */
    margin: 0;
    line-height: 1.2;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* --- Móviles pequeños (≤ 480px) --- */
@media (max-width: 480px) {
  .titulo-container h1 {
    font-size: clamp(16px, 5vw, 24px);
    gap: 6px;
  }
  .titulo-container h1 i {
    font-size: clamp(18px, 6vw, 26px);
  }
}

/* --- Tablets (481px - 768px) --- */
@media (min-width: 481px) and (max-width: 768px) {
  .titulo-container h1 {
    font-size: clamp(18px, 4vw, 28px);
    gap: 8px;
  }
  .titulo-container h1 i {
    font-size: clamp(20px, 5vw, 28px);
  }
}

/* --- Pantallas grandes (≥ 1024px) --- */
@media (min-width: 1024px) {
  .titulo-container h1 {
    font-size: clamp(24px, 3vw, 36px);
  }
  .titulo-container h1 i {
    font-size: clamp(26px, 3vw, 38px);
  }
}