* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body, html {
  height: 100%;
  font-family: Arial, sans-serif;
  color: white;
}
.hero {
  /* Imagen de fondo */
  background-image: url('Employees-Underground.jpg');
  background-size: cover;
  background-position: center;
  height: 100vh;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}
.overlay {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 100%;
  background-color: rgba(0,0,0,0.5); /* oscurece el fondo */
}
.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  padding: 20px;
}
.hero h1 {
  font-size: 4rem;
  margin-bottom: 20px;
  line-height: 1.2;
}
.hero p {
  font-size: 1.5rem;
  margin-bottom: 30px;
}
.btn-main {
  padding: 15px 30px;
  font-size: 1.2rem;
  color: white;
  background-color: #ff6600;
  text-decoration: none;
  border-radius: 5px;
  transition: background-color 0.3s;
  display: inline-block;
}
.btn-main:hover {
  background-color: #e65a00;
}

/* Sección más abajo */
.info {
  padding: 60px 20px;
  background-color: #f4f4f4;
  color: #333;
  text-align: center;
}
.info h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
}
.info p {
  font-size: 1.2rem;
  max-width: 800px;
  margin: auto;
}

/* Responsivo - tablets */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.5rem;
  }
  .hero p {
    font-size: 1.1rem;
  }
  .btn-main {
    font-size: 1rem;
    padding: 12px 25px;
  }
  .hero-content {
    width: 90%;
  }
}

/* Responsivo - móviles pequeños */
@media (max-width: 480px) {
  .hero h1 {
    font-size: 2.0rem;
  }
  .hero p {
    font-size: 1rem;
  }
  .btn-main {
    font-size: 0.9rem;
    padding: 10px 20px;
  }
  .hero-content {
    width: 100%;
    padding: 15px;
  }
}

/* Botón flotante de WhatsApp */
.whatsapp-float {
  position: fixed;
  width: 60px;
  height: 60px;
  bottom: 20px;
  right: 20px;
  background-color: #25d366;
  border-radius: 50%;
  box-shadow: 0px 2px 8px rgba(0,0,0,0.3);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 999;
  transition: transform 0.2s ease;
}
.whatsapp-float img {
  width: 35px;
  height: 35px;
}
.whatsapp-float:hover {
  transform: scale(1.1);
}