:root {
  --bg: #ffffff;
  --fg: #111111;
  --muted: #6b6b6b;
  --line: #e4e4e4;
  --card: #f6f6f6;
  --accent: #111111;
  --accent-fg: #ffffff;
  --danger: #c62828;
  --warn-bg: #fff3e0;
  --warn-fg: #8a4b00;
  --high: #c62828;
  --low: #9e9e9e;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f0f0f;
    --fg: #f1f1f1;
    --muted: #9a9a9a;
    --line: #2a2a2a;
    --card: #1a1a1a;
    --accent: #f1f1f1;
    --accent-fg: #0f0f0f;
    --danger: #ef5350;
    --warn-bg: #3a2a12;
    --warn-fg: #ffcc80;
    --high: #ef5350;
    --low: #616161;
  }
}
* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font: 16px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}
main { max-width: 760px; margin: 0 auto; padding: 0 16px 48px; }
a { color: inherit; }
button, input, select, textarea { font: inherit; color: inherit; }
input, select, textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg);
}
button {
  padding: 10px 16px;
  border: 0;
  border-radius: 8px;
  background: var(--accent);
  color: var(--accent-fg);
  cursor: pointer;
  white-space: nowrap;
}
button.fraco { background: transparent; color: var(--muted); border: 1px solid var(--line); }
label { display: block; font-size: 14px; color: var(--muted); margin-bottom: 12px; }
label input, label select, label textarea { margin-top: 4px; color: var(--fg); }

.topo {
  display: flex; justify-content: space-between; align-items: center;
  max-width: 760px; margin: 0 auto; padding: 16px;
}
.topo .marca { font-weight: 700; font-size: 20px; text-decoration: none; letter-spacing: .5px; }
.topo button { padding: 6px 12px; font-size: 14px; }

.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--line); margin-bottom: 16px; overflow-x: auto; }
.tabs a { padding: 10px 12px; text-decoration: none; color: var(--muted); border-bottom: 2px solid transparent; white-space: nowrap; }
.tabs a.on { color: var(--fg); border-bottom-color: var(--fg); font-weight: 600; }
.tabs .n { font-size: 12px; background: var(--card); border-radius: 10px; padding: 1px 7px; margin-left: 2px; }

.alerta { background: var(--warn-bg); color: var(--warn-fg); padding: 8px 12px; border-radius: 8px; }
.erro { color: var(--danger); }
.vazio, .info { color: var(--muted); }

.nova { background: var(--card); padding: 12px; border-radius: 12px; margin-bottom: 12px; }
.nova > input { margin-bottom: 8px; }
.linha { display: flex; gap: 8px; flex-wrap: wrap; }
.linha > * { flex: 1 1 140px; }
.linha > button { flex: 0 0 auto; }

.filtro { display: flex; gap: 6px; flex-wrap: wrap; margin: 12px 0 8px; }
.filtro a {
  font-size: 13px; text-decoration: none; color: var(--muted);
  border: 1px solid var(--line); border-radius: 14px; padding: 3px 10px;
}
.filtro a.on { color: var(--accent-fg); background: var(--accent); border-color: var(--accent); }

.tarefas { list-style: none; padding: 0; margin: 0; }
.tarefas li {
  display: flex; gap: 12px; align-items: flex-start;
  padding: 12px 0; border-bottom: 1px solid var(--line);
  border-left: 3px solid transparent; padding-left: 8px;
}
.tarefas li.p1 { border-left-color: var(--high); }
.tarefas li.p3 .titulo { color: var(--muted); }
.tarefas li.fechada .titulo { text-decoration: line-through; color: var(--muted); }
.tarefas form { margin: 0; }
.check {
  width: 24px; height: 24px; padding: 0; border-radius: 50%;
  background: transparent; border: 2px solid var(--muted); color: var(--fg);
  font-size: 13px; line-height: 20px; margin-top: 1px;
}
.check:hover { border-color: var(--fg); }
.corpo { flex: 1; text-decoration: none; min-width: 0; }
.titulo { display: block; overflow-wrap: anywhere; }
.meta { display: flex; gap: 10px; flex-wrap: wrap; font-size: 13px; color: var(--muted); margin-top: 3px; }
.meta .espera { color: var(--warn-fg); }
.meta .atraso { color: var(--danger); font-weight: 600; }

.voltar { display: inline-block; margin-bottom: 16px; color: var(--muted); text-decoration: none; }
.editar { margin-bottom: 16px; }
.secundario { display: flex; gap: 8px; flex-wrap: wrap; }

body.auth main { max-width: 360px; padding-top: 12vh; }
body.auth h1 { margin: 0 0 24px; }
body.auth button { width: 100%; }

.decidir { display: flex; gap: 6px; flex-shrink: 0; }
.decidir button { padding: 6px 10px; font-size: 14px; }