* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  }
  
  html {
    scroll-behavior: smooth;
  }

  body {
    background-color: #ffffff;
    color: #1a1a1a;
  }
  
  .navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 5%;
    background-color: #ffffff;
  }
  
  .logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: #1a1a1a;
  }
  
  .logo span {
    color: #0066FF;
  }
  
  .nav-links {
    display: flex;
    align-items: center;
    gap: 1.75rem;
  }
  
  .nav-links a {
    text-decoration: none;
    color: #666666;
    font-size: 0.95rem;
    font-weight: 500;
    transition: color 0.2s ease;
  }
  
  .nav-links a:hover {
    color: #0066FF;
  }
  
  .nav-links .nav-user {
    color: #1a1a1a;
    font-size: 0.95rem;
    font-weight: 600;
  }

  .nav-links .btn-login {
    color: #0066FF;
    font-weight: 600;
  }
  
  .nav-links .btn-signup {
    background-color: #0066FF;
    color: #ffffff;
    padding: 0.6rem 1.25rem;
    border-radius: 8px;
    font-weight: 600;
    transition: background-color 0.2s ease;
  }
  
  .nav-links .btn-signup:hover {
    background-color: #0052cc;
    color: #ffffff;
  }
  
  /* HERO SECTION */
  .hero {
    background-color: #D9E2F8; /* Tom azul claro/lavanda de fundo */
    padding: 5rem 5% 6rem 5%;
  }
  
  .hero-content {
    max-width: 600px;
  }
  
  .hero h1 {
    font-size: 2.75rem;
    font-weight: 500;
    color: #111827;
    margin-bottom: 1.25rem;
    line-height: 1.2;
  }
  
  .hero p {
    font-size: 1.05rem;
    color: #4b5563;
    line-height: 1.6;
    margin-bottom: 2rem;
  }
  
  .hero-buttons {
    display: flex;
    gap: 1rem;
  }
  
  .btn-primary {
    background-color: #0066FF;
    color: #ffffff;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: background-color 0.2s ease;
  }
  
  .btn-primary:hover {
    background-color: #0052cc;
  }
  
  .btn-secondary {
    background-color: transparent;
    color: #0066FF;
    border: 1.5px solid #0066FF;
    text-decoration: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: background-color 0.2s ease, color 0.2s ease;
  }
  
  .btn-secondary:hover {
    background-color: #0066FF;
    color: #ffffff;
  }
  
  /* CARDS / FEATURES SECTION */
  .features-container {
    padding: 3rem 5% 5rem 5%;
    background-color: #ffffff;
  }
  
  .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
    max-width: 1200px;
  }
  
  .card {
    background-color: #F8FAFC;
    padding: 2rem 1.5rem;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
  }
  
  .icon-box {
    width: 40px;
    height: 40px;
    background-color: #FFFFFF;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.5rem;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.04);
  }
  
  .card h3 {
    font-size: 1rem;
    font-weight: 700;
    color: #1f2937;
  }
  
  .card p {
    font-size: 0.875rem;
    color: #6b7280;
    line-height: 1.4;
  }

/* =========================================================
   RESPONSIVO (celulares e tablets)
   ========================================================= */

/* Tablets */
@media (max-width: 768px) {
  .navbar {
    padding: 1rem 5%;
  }

  .nav-links {
    gap: 1.25rem;
  }

  .hero {
    padding: 3.5rem 5% 4rem 5%;
  }

  .hero h1 {
    font-size: 2.25rem;
  }

  .features-container {
    padding: 2.5rem 5% 3.5rem 5%;
  }
}

/* Celulares */
@media (max-width: 480px) {
  .navbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .nav-links {
    width: 100%;
    justify-content: space-between;
    gap: 0.75rem;
  }

  .nav-links a {
    font-size: 0.9rem;
    white-space: nowrap;
  }

  .nav-links .btn-signup {
    padding: 0.5rem 1rem;
  }

  .hero {
    padding: 2.5rem 5% 3rem 5%;
  }

  .hero h1 {
    font-size: 1.85rem;
  }

  .hero p {
    font-size: 1rem;
    margin-bottom: 1.5rem;
  }

  .hero-buttons {
    flex-direction: column;
  }

  .btn-primary,
  .btn-secondary {
    display: block;
    text-align: center;
    width: 100%;
  }

  .features-container {
    padding: 2rem 5% 3rem 5%;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .card {
    padding: 1.5rem 1.25rem;
  }
}