.demo-sections-wrapper {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  padding: 30px;
  background-color: var(--dark-bg); /* Fondo principal de la sección */
  border-radius: 12px;
  box-shadow: 0 8px 20px var(--shadow-dark);
  margin-top: 40px; /* Separación del título de la sección Demo */
  border: 1px solid var(--border-color);
}

.chatbot-container,
.invoice-generator-container,
.calculator-container {
  background-color: var(--card-bg);
  padding: 25px;
  border-radius: 10px;
  box-shadow: 0 4px 15px var(--shadow-dark);
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border-color);
}

h3 {
  color: var(--primary-blue);
  font-size: 22px;
  margin-bottom: 20px;
  text-align: center;
}

/* Chatbot */
.chat-window {
  flex-grow: 1;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 15px;
  margin-bottom: 15px;
  overflow-y: auto;
  height: 250px;
  background-color: #0d0d0d; /* Fondo un poco más oscuro para el chat */
}

.chat-message {
  margin-bottom: 10px;
  padding: 8px 12px;
  border-radius: 15px;
  max-width: 80%;
  word-wrap: break-word;
}

.chat-message.user {
  background-color: #2563eb; /* Azul para mensajes del usuario */
  color: white;
  margin-left: auto;
  border-bottom-right-radius: 5px;
}

.chat-message.bot {
  background-color: #2e2e2e; /* Gris oscuro para mensajes del bot */
  color: var(--light-gray);
  margin-right: auto;
  border-bottom-left-radius: 5px;
}

.chat-input-area {
  display: flex;
  gap: 10px;
}

.chat-input-area input {
  flex-grow: 1;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background-color: #252525;
  color: var(--light-gray);
}

.chat-input-area button {
  padding: 10px 15px;
  background-color: var(--primary-blue);
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.3s ease;
}

.chat-input-area button:hover {
  background-color: #2563eb;
}

/* Formularios generales (factura y calculadora) */
.form-group {
  margin-bottom: 15px;
}

.form-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--light-gray);
  font-size: 15px;
}

.form-group input[type="text"],
.form-group input[type="date"],
.form-group input[type="number"] {
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  background-color: #252525;
  color: var(--light-gray);
  font-size: 1rem;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.5);
}

.form-group-inline {
  display: flex;
  gap: 15px;
  margin-bottom: 15px;
}

.form-group-inline .form-group {
  flex: 1;
  margin-bottom: 0;
}

.btn-generate,
.btn-calculate,
.btn-download {
  display: block;
  width: 100%;
  padding: 12px 20px;
  background-color: var(--primary-blue);
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 16px;
  font-weight: 600;
  transition: background-color 0.3s ease, transform 0.3s ease;
  margin-top: 20px;
}

.btn-generate:hover,
.btn-calculate:hover,
.btn-download:hover {
  background-color: #2563eb; /* Un azul un poco más oscuro */
  transform: translateY(-2px);
}

/* Vista Previa Factura */
.invoice-preview {
  background-color: #1A1A1A;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 20px;
  margin-top: 25px;
  color: var(--light-gray);
  box-shadow: 0 2px 8px var(--shadow-dark);
}

.invoice-preview h4 {
  color: var(--primary-blue);
  font-size: 18px;
  margin-bottom: 15px;
  text-align: center;
}

.invoice-preview p {
  margin-bottom: 8px;
  line-height: 1.5;
}

.invoice-preview p strong {
  color: var(--light-gray);
}

.invoice-preview .btn-download {
  margin-top: 20px;
}

/* Resultados Calculadora */
.calculation-results {
  background-color: #1A1A1A;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 20px;
  margin-top: 25px;
  color: var(--light-gray);
  text-align: center;
  box-shadow: 0 2px 8px var(--shadow-dark);
}

.calculation-results p {
  font-size: 1.1rem;
  margin-bottom: 10px;
  line-height: 1.5;
}

.calculation-results p strong {
  color: var(--primary-blue);
}

.demo-sections-main-wrapper {
  padding: 30px;
  background-color: var(--dark-bg); /* Fondo principal de la sección */
  border-radius: 12px;
  box-shadow: 0 8px 20px var(--shadow-dark);
  margin-top: 40px; /* Separación del título de la sección Demo */
  border: 1px solid var(--border-color);
}

.demo-selector-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 30px;
}

.demo-card {
  background-color: var(--card-bg);
  padding: 25px;
  border-radius: 10px;
  box-shadow: 0 4px 15px var(--shadow-dark);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  cursor: pointer;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border: 1px solid var(--border-color);
}

.demo-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 6px 20px var(--primary-blue);
}

.demo-card h4 {
  color: var(--primary-blue);
  font-size: 20px;
  margin-bottom: 10px;
}

.demo-card p {
  color: var(--gray-text);
  font-size: 15px;
}

.btn-back {
  display: block;
  width: fit-content;
  margin: 25px auto 0 auto;
  padding: 10px 20px;
  background-color: #555; /* Un gris oscuro para el botón de volver */
  color: white;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: background-color 0.3s ease;
}

.btn-back:hover {
  background-color: #777;
}

/* Responsive adjustments */
@media (max-width: 768px) {
  .demo-sections-wrapper {
    grid-template-columns: 1fr;
    padding: 20px;
    gap: 20px;
  }

  .chatbot-container, .invoice-generator-container, .calculator-container {
    padding: 20px;
  }

  h3 {
    font-size: 20px;
    margin-bottom: 15px;
  }

  .chat-window {
    height: 200px;
  }

  .chat-input-area input, .chat-input-area button {
    padding: 8px;
    font-size: 0.9rem;
  }

  .btn-generate, .btn-calculate, .btn-download {
    padding: 10px 15px;
    font-size: 15px;
  }

  .demo-sections-main-wrapper {
    padding: 20px;
    margin-top: 20px;
  }

  .demo-selector-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .demo-card {
    padding: 20px;
  }

  .demo-card h4 {
    font-size: 18px;
  }

  .demo-card p {
    font-size: 14px;
  }

  .btn-back {
    padding: 8px 15px;
    font-size: 12px;
  }
}