:root {
  --bg-color: #fff;
  --text-color: #222;
  --primary-color: #2b3a67;
  --secondary-color: #1e2b56;
  --card-bg: #fff;
  --accent-color: #5aa9e6;
}

body.dark {
  --bg-color: #0f172a;
  --text-color: #38bdf8;
  --primary-color: #1e2b56;
  --secondary-color: #38bdf8;
  --card-bg: #1e293b;
  --accent-color: #38bdf8;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background 0.3s, color 0.3s;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background-color: var(--primary-color);
  color: #fff;
  padding: 1rem 2rem;
}

.logo {
  font-weight: 600;
  font-size: 16px;
}

.nav-links {
  display: flex;
  gap: 1.5rem;
}

.nav-links a {
  color: #fff;
  text-decoration: none;
  font-weight: 500;
}

.icons {
  display: flex;
  gap: 1rem;
}

.icon-btn {
  background: none;
  border: none;
  color: #fff;
  cursor: pointer;
  font-size: 1.2rem;
}

.menu-btn {
  display: none;
}

main {
  max-width: 1100px;
  margin: 3rem auto;
  padding: 1rem;
  text-align: center;
}

.titulo-principal {
  font-size: 2rem;
  font-weight: 600;
  color: var(--secondary-color);
  margin-bottom: 3rem;
}

.contato-container {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
  flex-wrap: wrap;
}

.formulario {
  flex: 1 1 50%;
  background: #ddd;
  padding: 1.5rem;
  border-radius: 10px;
}

form {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

input,
textarea {
  width: 100%;
  padding: 8px;
  border: 1px solid #444;
  border-radius: 4px;
  font-size: 1rem;
}

.btn-enviar {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--secondary-color);
  color: #fff;
  border: none;
  border-radius: 20px;
  padding: 0.7rem 1.5rem;
  margin-top: 0.8rem;
  cursor: pointer;
  font-weight: 600;
  transition: background 0.3s;
}

.btn-enviar:hover {
  background: var(--accent-color);
  color: #000;
}

.infos {
  flex: 1 1 40%;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.info-card {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--card-bg);
  padding: 1rem;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s;
}

.info-card:hover {
  transform: translateY(-5px);
}

.info-card i {
  color: var(--accent-color);
  font-size: 1.5rem;
}

.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.6);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 10;
}

.modal-content {
  background: var(--card-bg);
  color: var(--text-color);
  padding: 2rem;
  border-radius: 15px;
  text-align: center;
  max-width: 400px;
  width: 90%;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.modal-content button {
  background: var(--accent-color);
  border: none;
  color: #000;
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  margin-top: 1rem;
  cursor: pointer;
  font-weight: 600;
}

footer {
  text-align: center;
  background-color: var(--secondary-color);
  color: #fff;
  padding: 1rem;
  margin-top: 3rem;
}

@media (max-width: 768px) {
  .contato-container {
    flex-direction: column;
    align-items: center;
  }

  .formulario,
  .infos {
    width: 90%;
  }

  .menu-btn {
    display: inline-block;
  }

  .nav-links {
    display: none;
    flex-direction: column;
    background-color: var(--primary-color);
    width: 100%;
    text-align: center;
    padding: 1rem 0;
  }

  .nav-links.active {
    display: flex;
  }
}