* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  background: #f3f4f6;
  color: #111827;
}
/* Logo quadrada */
.logo {
  display: flex;           /* coloca lado a lado */
  align-items: center;     /* alinha verticalmente */
  gap: 8px;                /* aproxima logo e texto */
}

.logo span {
  color: #f9fafb;
  font-weight: 700;
  font-size: 1.2rem;
}

.logo img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}

a {
  color: #4f46e5;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 1rem;
}

/* Topbar */
.topbar {
  background: #111827;
  color: #f9fafb;
}

.logo {
  font-weight: 700;
  font-size: 1.2rem;
}

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

.menu a {
  color: #e5e7eb;
  font-size: 0.95rem;
}

.menu a.active {
  font-weight: 600;
  border-bottom: 2px solid #4f46e5;
}

.topbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Hero */
.hero {
  margin: 2rem 0 1.5rem;
}

.hero h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.hero p {
  color: #4b5563;
}

/* Cards */
.card {
  background: #ffffff;
  padding: 1.5rem;
  border-radius: 0.75rem;
  box-shadow: 0 10px 15px -3px rgba(15, 23, 42, 0.1);
  margin-bottom: 1rem;
}

.card h2 {
  margin-bottom: 0.75rem;
  font-size: 1.25rem;
}

.card ul {
  margin-left: 1.25rem;
  margin-top: 0.5rem;
}

.card li {
  margin-bottom: 0.25rem;
}

/* Formulário */
.form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

label {
  font-weight: 500;
  color: #374151;
}

input,
textarea {
  padding: 0.75rem;
  border-radius: 0.5rem;
  border: 1px solid #d1d5db;
  font-size: 0.95rem;
}

input:focus,
textarea:focus {
  outline: none;
  border-color: #4f46e5;
  box-shadow: 0 0 0 1px #4f46e5;
}

.btn {
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  font-weight: 600;
  cursor: pointer;
  background: #4f46e5;
  color: #f9fafb;
}

.btn:hover {
  opacity: 0.9;
}

.small {
  margin-top: 0.75rem;
  font-size: 0.85rem;
  color: #6b7280;
}

/* Footer */
.footer {
  margin-top: 2rem;
  padding: 1.5rem 0;
  background: #111827;
  color: #e5e7eb;
  font-size: 0.9rem;
  text-align: center;
}
/* Faz o layout ocupar a tela inteira */
html, body {
  height: 100%;
  margin: 0;
}

/* Estrutura principal da página */
body {
  display: flex;
  flex-direction: column;
}

/* Faz o conteúdo crescer e empurrar o footer */
main {
  flex: 1;
}
/* Responsivo */
@media (max-width: 640px) {
  .topbar .container {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }

  .menu {
    flex-wrap: wrap;
  }

  .hero h1 {
    font-size: 1.6rem;
  }
}