/* RESET BÁSICO */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* ESTILO GLOBAL */
body {
  font-family: Arial, Helvetica, sans-serif;
  line-height: 1.6;
  color: #222;
  background-color: #ffffff;
}

/* SEÇÕES */
section {
  max-width: 900px;
  margin: 60px auto;
  padding: 0 20px;
}

/* TÍTULOS */
h1 {
  font-size: 42px;
  margin-bottom: 10px;
}

h2 {
  font-size: 22px;
  font-weight: normal;
  margin-bottom: 20px;
  color: #555;
}

h3 {
  font-size: 26px;
  margin-bottom: 15px;
}

/* TEXTOS */
p {
  margin-bottom: 15px;
}

/* LISTAS */
ul, ol {
  margin-left: 20px;
}

li {
  margin-bottom: 8px;
}
/* HERO */
.hero {
  text-align: center;
  padding: 100px 20px;
}

.hero h1 {
  font-size: 56px;
}

.hero p {
  font-size: 18px;
  margin-bottom: 30px;
}

/* BOTÃO */
.btn {
  display: inline-block;
  background-color: #111;
  color: #ffffff;
  padding: 14px 32px;
  text-decoration: none;
  font-weight: 600;
  border-radius: 6px;
  border: 1px solid #111;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  transition: all 0.3s ease;
}

.btn:hover {
  background-color: #ffffff;
  color: #111;
}
/* FORM */
form {
  max-width: 500px;
  margin: 0 auto;
}

input, textarea, select {
  width: 100%;
  padding: 10px;
  margin-top: 5px;
  font-family: inherit;
}

textarea {
  min-height: 100px;
}

button.btn {
  cursor: pointer;
  border: none;
}