:root {
  --bg: #f5f6f8;
  --card: #ffffff;
  --line: #e2e5ea;
  --text: #1c1f24;
  --muted: #6b7280;
  --accent: #2f6df6;
  --accent-soft: #e8f0ff;
  --done: #9aa1ac;
  --danger: #c0392b;
  --radius: 12px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #16181d;
    --card: #1e2128;
    --line: #2e323b;
    --text: #e8eaee;
    --muted: #9aa1ac;
    --accent: #6d9bff;
    --accent-soft: #22304d;
    --done: #7b828e;
    --danger: #ef7b6e;
  }
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
body {
  background: var(--bg);
  color: var(--text);
  font: 15px/1.6 -apple-system, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}
.top { padding: 18px 20px 6px; }
.top h1 { margin: 0; font-size: 20px; }
.status { margin: 4px 0 0; color: var(--muted); font-size: 13px; }
.status.error { color: var(--danger); }
main { display: grid; gap: 14px; padding: 12px 20px 28px; max-width: 860px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  display: grid;
  gap: 10px;
}
.card h2 { margin: 0; font-size: 15px; }
.row { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.between { justify-content: space-between; }
.field, .muted, .empty { color: var(--muted); font-size: 13px; }
.field { display: block; }
.empty { padding: 12px 0; }
textarea, input[type="text"], input[type="search"], input[type="date"] {
  font: inherit;
  color: var(--text);
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 8px 10px;
  width: 100%;
}
textarea { resize: vertical; }
input[type="text"], input[type="search"], input[type="date"] { width: auto; }
.row input[type="text"], .row input[type="search"] { flex: 1 1 220px; }
button {
  font: inherit;
  color: var(--text);
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 7px 12px;
  cursor: pointer;
}
button:hover:not(:disabled) { border-color: var(--accent); }
button:disabled { opacity: .55; cursor: not-allowed; }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
button.ghost { border-color: transparent; color: var(--muted); padding: 4px 6px; }
button.ghost:hover:not(:disabled) { color: var(--danger); border-color: transparent; }
.inline { display: inline-flex; gap: 6px; align-items: center; color: var(--muted); font-size: 13px; }
.chips { list-style: none; display: flex; flex-wrap: wrap; gap: 8px; margin: 0; padding: 0; }
.chip {
  border: 1px solid var(--line);
  background: var(--bg);
  border-radius: 999px;
  padding: 5px 12px;
  font-size: 13px;
  max-width: 100%;
  overflow-wrap: anywhere;
  cursor: pointer;
}
.chip[aria-pressed="true"] { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }
.filters { display: flex; gap: 6px; flex-wrap: wrap; }
.tab[aria-pressed="true"] { background: var(--accent-soft); border-color: var(--accent); color: var(--accent); }
.todos { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.todo {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 10px;
  align-items: start;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  background: var(--bg);
}
.todo.done .todo-text { color: var(--done); text-decoration: line-through; }
.todo-text { overflow-wrap: anywhere; }
.todo-line { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.badge {
  font-size: 12px;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 1px 8px;
}
.badge.message { color: var(--accent); border-color: var(--accent); }
.todo-actions { display: flex; gap: 4px; }
.todo input[type="text"] { width: 100%; }
.toast {
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%);
  background: var(--text);
  color: var(--bg);
  border-radius: 999px;
  padding: 8px 16px;
  font-size: 13px;
  max-width: 90vw;
}
@media (max-width: 560px) {
  main { padding: 10px 12px 24px; }
  .todo { grid-template-columns: auto 1fr; }
  .todo-actions { grid-column: 1 / -1; justify-content: flex-end; }
}