/* Variáveis do tema claro (default) */
:root {
  --bg-body: #ffffff;
  --bg-surface: #f5f5f5;
  --text-primary: #222222;
  --text-secondary: #555555;
  --border-color: #d0d0d0;
  --primary: #0066cc;
  --primary-hover: #0052a3;
  --yellow: #fff9c4;
  --yellow-text: #554400;
  --red: #dc3545;
  --orange: #ff9800;
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* Tema escuro (aplicado conforme preferência do sistema) */
@media (prefers-color-scheme: dark) {
  :root {
    --bg-body: #1e1e1e;
    --bg-surface: #2d2d2d;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0a0;
    --border-color: #444444;
    --primary: #4da6ff;
    --primary-hover: #69c0ff;
    --yellow: #332a00;
    --yellow-text: #ffffa0;
    --red: #ff6b6b;
    --orange: #ffa500;
  }
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.5;
  min-width: 320px;
}

header.topo {
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-color);
  padding: 12px 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

header.topo a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
}

header.topo a:hover {
  color: var(--text-primary);
  text-decoration: underline;
}

.faixa-ficticia {
  background-color: var(--yellow);
  color: var(--yellow-text);
  text-align: center;
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 500;
}

main.conteudo {
  max-width: 960px;
  margin: 0 auto;
  padding: 16px;
}

h1 {
  font-size: 24px;
  font-weight: 600;
  margin-bottom: 16px;
}

h2 {
  font-size: 18px;
  font-weight: 600;
  margin: 24px 0 12px 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

th, td {
  border: 1px solid var(--border-color);
  padding: 10px 12px;
  text-align: left;
}

tr:nth-child(even) {
  background-color: var(--bg-surface);
}

.abas {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 16px;
}

a.aba {
  display: inline-block;
  padding: 8px 16px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 14px;
  cursor: pointer;
}

a.aba:hover {
  background-color: #e0e0e0;
}

a.aba.ativa {
  background-color: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  font-weight: 500;
}

.grade {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}

.colunas {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}

.preservar {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.cartao {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 16px;
}

.cartao.concluido {
  text-decoration: line-through;
  opacity: 0.6;
}

label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
}

input,
select,
textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  font-size: 14px;
  background-color: var(--bg-body);
  color: var(--text-primary);
  outline: none;
  margin-bottom: 12px;
}

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

button {
  cursor: pointer;
  padding: 10px 18px;
  font-size: 14px;
  font-weight: 500;
  border: none;
  border-radius: 6px;
  transition: background-color 0.15s ease;
}

button:hover {
  opacity: 0.9;
}

.erro {
  color: var(--red);
  font-weight: 500;
}

.aviso {
  background-color: var(--yellow);
  color: var(--yellow-text);
  padding: 12px 16px;
  border-radius: 6px;
  font-size: 14px;
}

.selo {
  display: inline-block;
  padding: 4px 10px;
  background-color: var(--primary);
  color: #ffffff;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 500;
  margin-right: 8px;
}

.selo.desatualizado {
  background-color: var(--orange);
  color: #000000;
}

.acoes {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

@media (max-width: 700px) {
  .colunas {
    grid-template-columns: 1fr;
  }
}

/* Media query para telas pequenas */
@media (max-width: 480px) {
  header.topo {
    flex-direction: column;
  }

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

  main.conteudo {
    padding: 12px;
  }
}

input[type="checkbox"] {
  width: auto;
  margin: 0 8px 0 0;
}

.opcao {
  display: flex;
  align-items: center;
}