/* ===========================
   Estilo general
=========================== */
body {
  margin: 0;
  font-family: 'Inter', 'Segoe UI', sans-serif;
  background-color: #0f161d;
  color: #e0e0e0;
  line-height: 1.7;
  scroll-behavior: smooth;
}

/* ===========================
   Header
=========================== */
header {
  background: linear-gradient(135deg, #1a252f, #0b1218);
  text-align: center;
  padding: 60px 20px;
  box-shadow: 0 4px 8px rgba(0,0,0,0.4);
}

header h1 {
  font-size: 3rem;
  margin: 0;
  color: #00d1ff;
  letter-spacing: 1px;
}

header p {
  font-size: 1.25rem;
  margin-top: 12px;
  color: #cfd8dc;
}

/* ===========================
   Botón principal
=========================== */
.btn-container {
  text-align: center;
  margin: 35px 0;
}

.btn {
  background-color: #006973; /* contrast puternic */
  color: #ffffff;
  text-shadow: 1px 1px 2px rgba(0,0,0,0.4); /* vizibilitate text */
  padding: 16px 32px;
  font-size: 1.5rem;
  border: none;
  border-radius: 8px;
  text-decoration: none;
  transition: all 0.3s ease;
  display: inline-block;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(0,105,115,0.3);
}

.btn:hover {
  background-color: #005c5f;
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(0,105,115,0.4);
}

/* ===========================
   Secciones principales
=========================== */
#info, #faq, #opiniones {
  padding: 50px 20px;
  max-width: 1000px;
  margin: auto;
}

#info h2, #faq h2, #opiniones h2 {
  font-size: 2.2rem;
  margin-bottom: 25px;
  color: #00d1ff;
  border-bottom: 2px solid #00d1ff;
  display: inline-block;
  padding-bottom: 5px;
}

/* ===========================
   Párrafos
=========================== */
#info p, #opiniones p, #faq p {
  margin: 12px 0;
  font-size: 1.15rem;
  color: #cfd8dc;
}

#opiniones p {
  font-style: italic;
  color: #b0bec5;
}

/* ===========================
   FAQ
=========================== */
.faq-item {
  margin-bottom: 25px;
  padding: 15px;
  border-left: 4px solid #00d1ff;
  background-color: #1a222a;
  border-radius: 6px;
}

.faq-item h3 {
  margin-bottom: 8px;
  color: #ffffff;
}

.faq-item p {
  margin: 0;
  color: #cfd8dc;
}

/* ===========================
   Footer
=========================== */
footer {
  background-color: #1a252f;
  text-align: center;
  padding: 25px 20px;
  font-size: 0.95rem;
  color: #90a4ae;
  border-top: 1px solid #00bcd4;
}

/* ===========================
   Responsive
=========================== */
@media (max-width: 768px) {
  header h1 {
    font-size: 2.2rem;
  }
  header p {
    font-size: 1rem;
  }
  .btn {
    padding: 18px 32px;
    font-size: 1.6rem;
  }
  #info h2, #faq h2, #opiniones h2 {
    font-size: 1.9rem;
  }
}