:root {
  --primary: #5e72e4;
  --dark: #1a1f36;
  --accent: #f7931a;
  --light: #f8f9fa;
  --success: #2dce89;
  --danger: #f5365c;
  --gradient: linear-gradient(135deg, #5e72e4, #2d3748);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scroll-behavior: smooth;
}

body {
  font-family: 'Poppins', sans-serif;
  background: var(--light);
  color: var(--dark);
  line-height: 1.6;
}

.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(26, 31, 54, 0.95);
  padding: 1rem 2rem;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  box-shadow: 0 2px 10px rgba(0,0,0,0.2);
  transition: all 0.3s ease;
}

.navbar.scrolled {
  padding: 0.7rem 2rem;
}

.logo {
  color: white;
  font-weight: bold;
  font-size: 1.2rem;
  text-decoration: none;
}

.nav-links {
  display: flex;
  list-style: none;
}

.nav-links li {
  margin-left: 2rem;
}

.nav-links a {
  color: white;
  text-decoration: none;
  transition: 0.3s;
  font-weight: 500;
  font-size: 0.9rem;
  opacity: 0.8;
}

.nav-links a:hover {
  opacity: 1;
  color: var(--accent);
}

.mobile-menu {
  display: none;
  font-size: 1.5rem;
  color: white;
  cursor: pointer;
}

header {
  position: relative;
  background: url('background.png') center/cover no-repeat;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 8rem 2rem 4rem;
  color: white;
}

header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.8), rgba(0, 0, 0, 0.6));
  z-index: 1;
}

header > * {
  position: relative;
  z-index: 2;
}

header h1 {
  font-size: 3.2rem;
  max-width: 800px;
  margin-bottom: 1rem;
  line-height: 1.2;
  animation: fadeIn 1.5s;
}

header p {
  font-size: 1.3rem;
  margin: 1.5rem 0 3rem;
  max-width: 700px;
  opacity: 0.9;
}

.highlight {
  color: var(--accent);
  font-weight: 700;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.cta-button {
  background: var(--accent);
  color: var(--dark);
  padding: 1rem 2.5rem;
  border: none;
  border-radius: 40px;
  font-weight: bold;
  cursor: pointer;
  transition: all 0.3s;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  box-shadow: 0 4px 15px rgba(247, 147, 26, 0.4);
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.cta-button:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: 0 8px 20px rgba(247, 147, 26, 0.6);
}

.cta-button i {
  margin-left: 10px;
}

/* Seções e Componentes */
section {
  padding: 6rem 2rem;
  text-align: center;
  position: relative;
}

section h2 {
  font-size: 2.5rem;
  margin-bottom: 2.5rem;
  position: relative;
  display: inline-block;
}

section h2::after {
  content: '';
  position: absolute;
  width: 80px;
  height: 4px;
  background: var(--accent);
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  border-radius: 2px;
}

.section-subtitle {
  font-size: 1.2rem;
  max-width: 700px;
  margin: -1.5rem auto 3rem;
  opacity: 0.7;
}

/* Cards e Grids */
.topics-grid, .bonus-grid, .benefits-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2.5rem;
  max-width: 1200px;
  margin: 0 auto;
}

.card {
  background: white;
  padding: 2.5rem 2rem;
  border-radius: 15px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
  transition: all 0.3s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: 0 15px 35px rgba(0,0,0,0.12);
}

.card i {
  font-size: 2.5rem;
  color: var(--primary);
  margin-bottom: 1.5rem;
}

.card h3 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
  color: var(--dark);
}

.card p {
  color: #666;
  font-size: 1rem;
  flex-grow: 1;
}

/* Seção de Bônus */
.bonus-card {
  background: linear-gradient(to right bottom, #ffffff, #f9f9ff);
  border: 2px solid rgba(94, 114, 228, 0.1);
}

.bonus-card h3 {
  color: var(--primary);
  font-size: 1.6rem;
  margin-bottom: 1.5rem;
}

.bonus-features {
  text-align: left;
  margin-top: 1.5rem;
}

.bonus-features li {
  margin-bottom: 1rem;
  position: relative;
  padding-left: 2rem;
  list-style: none;
}

.bonus-features li:last-child {
  margin-bottom: 0;
}

.bonus-features li::before {
  content: "✅";
  position: absolute;
  left: 0;
  top: 0;
}

/* Seção de Preço */
.price-box {
  background: var(--gradient);
  color: white;
  padding: 3rem;
  border-radius: 20px;
  max-width: 600px;
  margin: 3rem auto;
  box-shadow: 0 15px 30px rgba(0,0,0,0.15);
  position: relative;
  overflow: hidden;
}

.price-box::before {
  content: "OFERTA ESPECIAL";
  position: absolute;
  top: 15px;
  right: -35px;
  background: var(--accent);
  color: var(--dark);
  padding: 5px 40px;
  font-size: 0.8rem;
  font-weight: bold;
  transform: rotate(45deg);
}

.price-box span {
  display: block;
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
}

.price-box .original-price {
  font-size: 1.3rem;
  opacity: 0.7;
  text-decoration: line-through;
}

.price-box .current-price {
  font-size: 2.8rem;
  font-weight: bold;
  margin: 0.5rem 0 2rem;
}

.guarantee {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 3rem 0 1rem;
}

.guarantee img {
  width: 80px;
  margin-right: 1rem;
}

.guarantee-text {
  text-align: left;
}

.guarantee-text h3 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
}

.guarantee-text p {
  font-size: 0.9rem;
  opacity: 0.8;
}

.urgent {
  color: var(--danger);
  font-weight: bold;
  margin-top: 1.5rem;
  font-size: 1.1rem;
  background: rgba(255, 255, 255, 0.1);
  padding: 0.7rem;
  border-radius: 5px;
}

/* Benefits Compare */
.benefits-compare {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  max-width: 900px;
  margin: 0 auto;
}

.benefit-col {
  background: white;
  border-radius: 15px;
  padding: 2rem;
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.benefit-col.before {
  border-top: 5px solid var(--danger);
}

.benefit-col.after {
  border-top: 5px solid var(--success);
}

.benefit-col h3 {
  font-size: 1.6rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid rgba(0,0,0,0.1);
}

.benefit-list {
  text-align: left;
}

.benefit-list li {
  margin-bottom: 1rem;
  padding-left: 2rem;
  position: relative;
  list-style: none;
}

.benefit-list li::before {
  position: absolute;
  left: 0;
  top: 2px;
}

.before-list li::before {
  content: "❌";
}

.after-list li::before {
  content: "✅";
}

/* FAQ Section */
.faq {
  max-width: 800px;
  margin: 4rem auto 0;
}

.faq-item {
  background: white;
  border-radius: 15px;
  padding: 2rem;
  margin-bottom: 1.5rem;
  text-align: left;
  box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.faq-item h3 {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  color: var(--primary);
}

.faq-item p {
  color: #555;
}

/* Footer */
footer {
  background: var(--dark);
  color: white;
  padding: 4rem 2rem 2rem;
  text-align: center;
}

.footer-content {
  max-width: 800px;
  margin: 0 auto;
}

.footer-links {
  display: flex;
  justify-content: center;
  margin-bottom: 2rem;
}

.footer-links a {
  color: white;
  opacity: 0.7;
  margin: 0 1rem;
  text-decoration: none;
  transition: 0.3s;
}

.footer-links a:hover {
  opacity: 1;
}

.social-icons {
  margin-bottom: 2rem;
}

.social-icons a {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255,255,255,0.1);
  color: white;
  margin: 0 0.5rem;
  transition: 0.3s;
}

.social-icons a:hover {
  background: var(--accent);
  color: var(--dark);
  transform: translateY(-3px);
}

.copyright {
  opacity: 0.7;
  font-size: 0.9rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.1);
}

/* Back to Top Button */
#back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--accent);
  color: var(--dark);
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  cursor: pointer;
  box-shadow: 0 5px 15px rgba(0,0,0,0.2);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s;
  z-index: 99;
}

#back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

/* Animações */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Features Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin: 0 auto;
  max-width: 1200px;
}

.feature {
  background: white;
  padding: 2rem;
  border-radius: 15px;
  box-shadow: 0 8px 25px rgba(0,0,0,0.08);
  transition: all 0.3s ease;
}

.feature:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 30px rgba(0,0,0,0.12);
}

.feature i {
  font-size: 2.5rem;
  color: var(--accent);
  margin-bottom: 1rem;
}

.feature h3 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

.feature p {
  color: #666;
  font-size: 1rem;
}

/* Mobile Responsiveness */
@media (max-width: 768px) {
  .navbar {
    padding: 1rem;
  }
  .nav-links {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: var(--dark);
    flex-direction: column;
    padding: 2rem;
    transform: translateY(-150%);
    transition: all 0.5s;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
  }
  .nav-links.active {
    transform: translateY(0);
  }
  .nav-links li {
    margin: 1.5rem 0;
  }
  .mobile-menu {
    display: block;
  }
  header h1 {
    font-size: 2.2rem;
  }
  header p {
    font-size: 1.1rem;
  }
  section {
    padding: 4rem 1rem;
  }
  section h2 {
    font-size: 2rem;
  }
  .cta-button {
    padding: 0.8rem 1.5rem;
    font-size: 1rem;
  }
  .benefits-compare {
    grid-template-columns: 1fr;
  }
  .price-box {
    padding: 2rem 1.5rem;
  }
  .price-box .current-price {
    font-size: 2.2rem;
  }
  .guarantee {
    flex-direction: column;
    text-align: center;
  }
  .guarantee img {
    margin: 0 0 1rem 0;
  }
  .guarantee-text {
    text-align: center;
  }
}

@media (max-width: 480px) {
  header h1 {
    font-size: 1.8rem;
  }
  header p {
    font-size: 1rem;
  }
  section h2 {
    font-size: 1.8rem;
  }
  .footer-links {
    flex-wrap: wrap;
  }
  .footer-links a {
    margin: 0.5rem;
  }
}
