a {
  color: var(--primaria);
}

a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 3px solid var(--primaria);
  outline-offset: 4px;
}

.cabecalho {
  padding: 0.4rem 1rem;
  text-align: center;
}

.marca {
  display: inline-block;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(1.7rem, 6vw, 4.75rem);
  font-weight: 400;
  letter-spacing: -0.055em;
  line-height: 1.15;
  text-decoration: none;
}

main {
  max-width: 460px;
  margin-inline: auto;
  padding: 2rem 1rem 4rem;
}

.voltar {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 44px;
  margin-bottom: 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
}

.voltar:hover {
  text-decoration: underline;
}

.icone {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.cartao {
  background: var(--branco);
  padding: clamp(1.25rem, 5vw, 2rem);
  border: 1px solid var(--borda);
  border-radius: 16px;
  box-shadow: 0 12px 32px rgb(125 99 171 / 8%);
}

h1 {
  margin: 0 0 1.5rem;
  font-size: 1.75rem;
  line-height: 1.25;
}

.campo {
  margin-bottom: 1.25rem;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

input {
  display: block;
  width: 100%;
  min-width: 0;
  min-height: 48px;
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--secundaria);
  border-radius: 8px;
  background: var(--branco);
  color: var(--texto);
  font: inherit;
}

input::placeholder {
  color: var(--muted);
}

input:focus {
  border-color: var(--primaria);
}

.entrar {
  width: 100%;
  min-height: 50px;
  margin-top: 0.25rem;
  padding: 0.8rem 1rem;
  border: 1px solid var(--primaria);
  border-radius: 10px;
  background: var(--primaria);
  color: var(--texto-sobre-primaria);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}

.entrar:hover {
  border-color: var(--primaria-escura);
  background: var(--primaria-escura);
}

.entrar:disabled {
  cursor: not-allowed;
  opacity: 0.65;
}

.mensagem:not(:empty) {
  margin: 1rem 0 0;
  padding: 0.8rem;
  border-radius: 8px;
  background: var(--fundo-suave);
  font-size: 0.875rem;
}

.mensagem:empty {
  margin: 0;
}

@media (max-width: 520px) {
  .cabecalho {
    padding-block: 0.5rem;
  }

  main {
    padding-top: 1rem;
  }

}