:root {
  --fundo: #1e1e1e;
  --card: #3c3c3c;
  --roxo: #6b2d9c;
  --roxo-claro: #c9a0f0;
  --branco: #ffffff;
  --texto-claro: #9a9a9a;
  --erro: #ff8a8a;
  --ok: #8be28b;
}

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

body {
  font-family: "Inter", Arial, sans-serif;
  background: var(--fundo);
  color: var(--branco);
  min-height: 100vh;
}

.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  max-width: 1200px;
  margin: 0 auto;
  padding: 20px 12px 0;
}

/* Topo */
.topo {
  background: var(--branco);
  padding: 14px 36px;
  border-radius: 6px 6px 0 0;
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--roxo);
  font-size: 24px;
  font-weight: 700;
}

/* Formulário */
.card {
  background: var(--card);
  flex: 1;
  padding: 16px 24px 40px;
  display: flex;
  flex-direction: column;
}

.campo { margin-bottom: 22px; }
.campo label {
  display: block;
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 8px;
}

.input {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--branco);
  color: #333;
  border-radius: 8px;
  padding: 0 14px;
  height: 44px;
  border: 2px solid transparent;
}
.input:focus-within { border-color: var(--roxo-claro); }
.input .icone { color: #666; flex-shrink: 0; }
.input input {
  flex: 1;
  border: none;
  outline: none;
  background: transparent;
  font-family: inherit;
  font-size: 14px;
  color: #222;
}
.input input::placeholder { color: var(--texto-claro); }
.campo.invalido .input { border-color: var(--erro); }

.erro {
  display: block;
  min-height: 14px;
  margin-top: 4px;
  font-size: 14px;
  color: var(--erro);
}

/* Botão */
.botao {
  margin-top: 8px;
  width: 100%;
  height: 44px;
  background: var(--roxo);
  color: var(--branco);
  border: 1.5px solid var(--roxo-claro);
  border-radius: 8px;
  font-family: inherit;
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: filter 0.2s;
}
.botao:hover { filter: brightness(1.15); }
.botao:disabled { opacity: 0.6; cursor: not-allowed; }

.mensagem {
  margin-top: 14px;
  font-size: 14px;
  text-align: center;
  min-height: 16px;
}
.mensagem.erro-msg { color: var(--erro); }
.mensagem.ok-msg { color: var(--ok); }

.ajuda {
  margin-top: 24px;
  text-align: right;
  font-size: 14px;
}
.ajuda a {
  color: var(--roxo-claro);
  font-weight: 700;
  text-decoration: none;
}
.ajuda a:hover { text-decoration: underline; }

/* Rodapé */
.rodape {
  background: #333;
  border-top: 1px solid #555;
  padding: 14px 36px;
  font-size: 14px;
}

@media (max-width: 600px) {
  .topo, .rodape { padding-left: 16px; padding-right: 16px; }
  .card { padding: 16px 12px 32px; }
}