:root {
  --azul: #5c8ecf;
  --azul-oscuro: #004C97;
  --turquesa: #00B4F0;
  --rojo: #D62828;
  --gris-claro: #f4f4f4;
  --texto: #0f172a;
}

body {
  margin: 0;
  font-family: 'Segoe UI', sans-serif;
  background-color: var(--gris-claro);
  color: var(--texto);
}

/* Encabezado */
.top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--azul);
  padding: 10px 20px;
  flex-wrap: wrap;
}

.logo {
  height: 80px;
}

.main-menu ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.main-menu a {
  color: white;
  text-decoration: none;
  font-weight: 600;
  padding: 15px 10px;
  display: block;
  transition: background-color 0.3s ease;
}

.main-menu a:hover,
.main-menu a.active {
  background-color: var(--turquesa);
}

/* Hero */
.hero {
  background: linear-gradient(90deg, #3a6ea5, var(--azul));
  color: white;
  padding: 60px 20px;
  text-align: center;
}

.hero h1 {
  font-size: 2em;
  margin-bottom: 10px;
}

.hero p {
  font-size: 1.2em;
  margin-bottom: 20px;
}

button {
  background-color: var(--turquesa);
  color: white;
  border: none;
  padding: 10px 20px;
  font-size: 1em;
  cursor: pointer;
  border-radius: 5px;
  transition: background-color 0.3s ease;
}

button:hover {
  background-color: #0090C0;
}

/* Secciones */
section {
  padding: 60px 20px;
  background-color: white;
  border-bottom: 1px solid #ddd;
}

section h2 {
  color: var(--azul-oscuro);
  margin-bottom: 30px;
  text-align: center;
}

/* Fila horizontal para modelo */
.modelo-fila {
  display: flex;
  flex-wrap: nowrap;
  gap: 20px;
  justify-content: space-between;
  overflow-x: auto;
  padding-bottom: 10px;
}

.modelo-card {
  background-color: #fff;
  border: 1px solid #ccc;
  padding: 20px;
  min-width: 250px;
  max-width: 250px;
  flex: 0 0 auto;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  text-align: left;
}

/* CTA final */
.cta-final {
  background-color: var(--rojo);
  color: white;
  text-align: center;
  padding: 40px 20px;
}

.cta-final h2,
.cta-final p {
  color: white;
}

/* Footer */
footer {
  text-align: center;
  padding: 10px;
  background-color: var(--azul-oscuro);
  color: white;
  font-size: 0.9em;
}

/* Animación */
.fade-in {
  animation: fadeIn 1s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 768px) {
  .top-bar {
    flex-direction: column;
    align-items: flex-start;
  }

  .main-menu ul {
    flex-direction: column;
    gap: 10px;
    width: 100%;
  }

  .logo {
    height: 60px;
    margin-bottom: 10px;
  }

  .modelo-fila {
    flex-wrap: wrap;
    justify-content: center;
  }

  .modelo-card {
    max-width: 320px;
    width: 100%;
    margin-bottom: 20px;
  }

  section {
    padding: 40px 15px;
  }
}