.product-header {
  text-align: center;
  margin-bottom: 2rem;
}

.product-header h1 {
  color: var(--blue-900);
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.product-header p {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 700px;
  margin: 0 auto;
}

/* ---------- Selector de modelos ---------- */
.model-selector {
  text-align: center;
  background: #f7fbff;
  border-radius: var(--radius);
  padding: 2rem 1rem;
  box-shadow: 0 4px 12px rgba(2, 6, 23, 0.04);
  margin-bottom: 2.5rem;
}

.model-selector h2 {
  color: var(--blue-700);
  margin-bottom: 1rem;
}

.model-selector .buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.model-btn {
  background: #eaf3ff;
  border: 1px solid #d6e8ff;
  color: var(--blue-900);
  padding: 0.6rem 1.2rem;
  border-radius: var(--radius);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.model-btn:hover {
  background: var(--blue-500);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(3, 78, 162, 0.15);
}

.model-btn.active {
  background: var(--blue-700);
  color: #fff;
  border-color: var(--blue-700);
}

/* ---------- Contenido de modelo ---------- */
.model-content {
  display: grid;
  place-items: center;
  gap: 2rem;
}

.model-item {
  display: none;
  text-align: center;
  animation: fadeIn 0.4s ease forwards;
}

.model-item.active {
  display: block;
}

.model-item img {
  max-width: 420px;
  width: 100%;
  border-radius: var(--radius);
  margin: 1rem 0;
  box-shadow: 0 8px 24px rgba(2, 6, 23, 0.08);
}

.model-item h3 {
  color: var(--blue-700);
  margin-bottom: 0.5rem;
}

.model-item p {
  color: var(--muted);
  font-size: 1rem;
  max-width: 720px;
  margin: 0 auto;
}

/* ---------- Tabla técnica ---------- */
.tech-table {
  margin-top: 2rem;
  background: #fff;
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: 0 8px 24px rgba(2, 6, 23, 0.06);
}

.tech-table h2 {
  text-align: center;
  margin-bottom: 1rem;
  color: var(--blue-900);
}

.tech-table table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
  overflow-x: auto;
}

.tech-table th,
.tech-table td {
  border: 1px solid #e5eef9;
  padding: 0.75rem;
  text-align: center;
}

.tech-table th {
  background: #f0f7ff;
  color: var(--blue-900);
  font-weight: 700;
}

.tech-table tr:nth-child(even) {
  background: #f9fcff;
}

.tech-table tr:hover {
  background: #eef7ff;
}

/* ---------- Responsive ---------- */
@media (max-width: 768px) {
  .model-item img {
    max-width: 100%;
  }

  .tech-table {
    padding: 1rem;
  }

  .tech-table table {
    font-size: 0.85rem;
  }

  .model-selector {
    padding: 1.5rem;
  }
}

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

/* ---------- Separadores suaves ---------- */
.section hr {
  border: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, rgba(0,0,0,0.1), transparent);
  width: 80%;
}