:root {
  --primary-color: #2196f3;
  --light-color: #f9f9f9;
  --dark-color: #0d47a1;
  --text-color: #333;
  --secondary-color: #1976d2;
  --highlight-color: #e3f2fd;
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  overflow-x: hidden;
  font-family: 'Segoe UI', sans-serif;
  background: var(--light-color);
  color: var(--text-color);
  scroll-behavior: smooth;
}

.container {
  max-width: 1200px;
  margin: auto;
  padding: 1rem;
}

.top-header {
  background: linear-gradient(135deg, #03a9f4, #0288d1);
  color: white;
  text-align: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  padding-bottom: 1rem;
}

.header-content {
  max-width: 900px;
  margin: 0 auto;
}

.top-header h1 {
  font-size: 2.2rem;
  margin: 0;
  font-weight: 700;
  letter-spacing: 1px;
}

.top-header p {
  font-size: 1.1rem;
  margin-top: 1rem;
  font-weight: 300;
}

.hero {
  background: #ffffff;
  padding: 4rem 1.5rem;
}

.hero-flex {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  align-items: center;
  justify-content: center;
}

.hero-image img {
  max-width: 300px;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
}

.hero-text {
  max-width: 600px;
  text-align: center;
}

.hero-text h2 {
  font-size: 1.8rem;
  color: var(--dark-color);
  margin-bottom: 1rem;
}

.hero-text p {
  font-size: 1.1rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.buttons .btn {
  background: var(--primary-color);
  color: white;
  padding: 0.75rem 1.5rem;
  text-decoration: none;
  border-radius: 10px;
  font-weight: 600;
  margin: 0.5rem 0.5rem 0 0;
  display: inline-block;
  transition: all 0.3s ease;
}

.btn i {
  margin-right: 8px;
}

.btn:hover {
  background: var(--dark-color);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--secondary-color);
}

h2 {
  color: var(--primary-color);
  margin-bottom: 1rem;
  font-size: 1.8rem;
  text-align: center;
}

.cards, .model-cards, .application-cards, .payment-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 0.5rem;
}

.card, .model-card, .application-card, .payment-card, .testimonial {
  background: white;
  padding: 1.5rem;
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.06);
  text-align: center;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  height: 100%;
}

.card:hover, .model-card:hover, .application-card:hover, .payment-card:hover, .testimonial:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.1);
}

.card h3, .model-card h3, .application-card h3, .payment-card h3 {
  font-size: 1.2rem;
  color: var(--dark-color);
  margin-bottom: 0.5rem;
}

.card p, .model-card p, .application-card p, .payment-card p {
  font-size: 0.95rem;
  color: var(--text-color);
}

.model-card img,
.application-card img {
  width: 100%;
  max-width: 220px;
  height: 220px;
  object-fit: cover;
  aspect-ratio: 1 / 1;
  border-radius: 12px;
  margin: 0 auto 1rem auto;
  display: block;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
  transition: transform 0.3s ease;
}

.payment-card img {
  max-width: 130px;
  height: auto;
  margin-bottom: 0.5rem;
  transition: transform 0.3s ease;
}

.payment-card {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.model-card img:hover,
.application-card img:hover,
.payment-card img:hover {
  transform: scale(1.05);
}

.price {
  font-size: 1.4rem;
  font-weight: bold;
  color: var(--primary-color);
  margin: 1rem 0;
}

.btn-model {
  background: var(--primary-color);
  color: white;
  padding: 0.7rem 1.4rem;
  text-decoration: none;
  border-radius: 8px;
  font-weight: 600;
  transition: background 0.3s ease, transform 0.2s ease;
  display: inline-block;
}

.btn-model:hover {
  background: var(--dark-color);
  transform: scale(1.05);
}

footer {
  background: #e0e0e0;
  text-align: center;
  padding: 2rem 1rem;
  margin-top: 3rem;
  font-size: 0.95rem;
  color: #555;
}

footer a {
  color: var(--dark-color);
  text-decoration: none;
  margin: 0 0.5rem;
}

footer a:hover {
  text-decoration: underline;
}

.whatsapp-float {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 1000;
  background-color: #25d366;
  padding: 10px;
  border-radius: 50%;
  box-shadow: 0 4px 10px rgba(0,0,0,0.2);
  transition: transform 0.3s ease;
}

.whatsapp-float img {
  width: 40px;
  height: 40px;
}

.whatsapp-float:hover {
  transform: scale(1.1);
}

.testimonials {
  background-color: var(--highlight-color);
  background-color: var(--light-color);
  padding: 3rem 1.5rem;
  margin-top: 1rem;
}

.testimonials h2 {
  text-align: center;
  color: var(--primary-color);
  font-size: 1.8rem;
  margin-bottom: 2.5rem;
}

.testimonial-cards {
  display: flex;
  justify-content: center;
  align-items: stretch;
  flex-wrap: wrap;
  gap: 2rem;
}

.testimonial p {
  font-style: italic;
  color: #444;
  margin-bottom: 1.5rem;
  line-height: 1.6;
  font-size: 1rem;
}

.testimonial h4 {
  color: var(--primary-color);
  font-weight: 600;
  font-size: 1rem;
  margin: 0;
}

.fas, .fab, .far, .fal, .fad {
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
}

.fab {
  font-family: 'Font Awesome 6 Brands';
}

@media (max-width: 480px) {
  .hero-text h2 {
    font-size: 1.4rem;
  }

  .hero-text p {
    font-size: 1rem;
  }

  .card h3 {
    font-size: 1rem;
  }

  .card p {
    font-size: 0.9rem;
  }
}

.certificados {
  margin-bottom: 2rem;
}

.card p,
.testimonial p,
.card h3,
.testimonial h4 {
  font-family: 'Segoe UI', sans-serif;
}

.certificados .card,
.testimonial {
  max-width: 500px;
  margin: 0 auto;
}

.benefits {
  padding: 3rem 1rem;
}

.benefits h2 {
  color: var(--primary-color);
  text-align: center;
  margin-bottom: 2rem;
}

/* Fundo azul claro para seções com cards */
.porque-usar,
.features,
.faq,
.certificados {
  background-color: #f1f9ff;
  padding: 3rem 1.5rem;
  border-radius: 8px;
  margin-bottom: 2rem;
}

.bg-highlight {
  background-color: #eaf6ff;
  padding: 3rem 1.5rem;
  border-radius: 12px;
  margin-bottom: 2rem;
}