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

:root {
  --fundo: #f4f6f8;
  --painel: #ffffff;
  --texto: #18212b;
  --muted: #66717e;
  --borda: #dfe4e8;
  --primaria: #1f5f8b;
  --primaria-hover: #174c70;
  --sucesso: #2f855a;
  --perigo: #b43a3a;
}

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

.container {
  width: min(1100px, calc(100% - 32px));
  margin: 0 auto;
  padding: 48px 0 24px;
}

.topo {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 30px;
}

.etiqueta {
  color: var(--primaria);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.16em;
  margin-bottom: 8px;
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  margin-bottom: 8px;
}

.subtitulo {
  color: var(--muted);
  line-height: 1.6;
}

.status {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.9rem;
  white-space: nowrap;
}

.status-bolinha {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--sucesso);
}

.painel {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 22px;
}

.formulario-bloco,
.lista-bloco {
  background: var(--painel);
  border: 1px solid var(--borda);
  border-radius: 16px;
  padding: 24px;
}

h2 {
  font-size: 1.15rem;
  margin-bottom: 18px;
}

form {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

label {
  font-size: 0.88rem;
  font-weight: 700;
  margin-top: 6px;
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--borda);
  border-radius: 10px;
  padding: 12px 13px;
  font: inherit;
  outline: none;
}

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

textarea {
  min-height: 110px;
  resize: vertical;
}

button {
  border: 0;
  border-radius: 10px;
  padding: 12px 16px;
  background: var(--primaria);
  color: #fff;
  font: inherit;
  font-weight: 700;
  cursor: pointer;
  transition: background 0.2s ease;
}

button:hover {
  background: var(--primaria-hover);
}

form button {
  margin-top: 10px;
}

.botao-secundario {
  background: #e9eef2;
  color: var(--texto);
}

.botao-secundario:hover {
  background: #dde5eb;
}

.lista-cabecalho {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}

.lista-cabecalho h2 {
  margin-bottom: 5px;
}

.lista-cabecalho p {
  color: var(--muted);
  font-size: 0.9rem;
}

.lista-tarefas {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.tarefa {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 16px;
  border: 1px solid var(--borda);
  border-radius: 12px;
  padding: 16px;
}

.tarefa.concluida {
  opacity: 0.68;
}

.tarefa.concluida h3 {
  text-decoration: line-through;
}

.tarefa h3 {
  margin-bottom: 5px;
}

.tarefa p {
  color: var(--muted);
  line-height: 1.45;
}

.acoes {
  display: flex;
  align-items: center;
  gap: 8px;
}

.acoes button {
  padding: 9px 11px;
  font-size: 0.82rem;
}

.botao-remover {
  background: var(--perigo);
}

.botao-remover:hover {
  background: #8f2e2e;
}

.mensagem {
  min-height: 20px;
  margin-top: 12px;
  font-size: 0.88rem;
}

.mensagem.sucesso {
  color: var(--sucesso);
}

.mensagem.erro {
  color: var(--perigo);
}

.carregando,
.vazio {
  color: var(--muted);
  padding: 20px 0;
}

footer {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  padding-top: 28px;
}

@media (max-width: 800px) {
  .painel {
    grid-template-columns: 1fr;
  }

  .topo {
    flex-direction: column;
  }

  .lista-cabecalho {
    flex-direction: column;
  }

  .tarefa {
    grid-template-columns: 1fr;
  }

  .acoes {
    flex-wrap: wrap;
  }
}