:root {
  --bg: #0b0d12;
  --panel: #151822;
  --line: #262b38;
  --ink: #eceef4;
  --dim: #98a0b4;
  --brand: #6d5cf5;
  --good: #37c98a;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  background: radial-gradient(900px 500px at 80% -10%, #1a1e30, var(--bg) 60%), var(--bg);
  color: var(--ink);
  font: 16px/1.5 ui-sans-serif, -apple-system, "Segoe UI", Roboto, sans-serif;
  display: grid;
  place-items: start center;
  padding: 8vh 20px;
}
.app { width: 100%; max-width: 560px; }
.head h1 { margin: 0; font-size: 30px; letter-spacing: -0.02em; }
.head .sub { margin: 6px 0 0; color: var(--dim); font-size: 14.5px; }

.new { display: flex; gap: 10px; margin: 24px 0 18px; }
.new input {
  flex: 1; padding: 12px 14px; border-radius: 11px;
  border: 1px solid var(--line); background: var(--panel); color: var(--ink); font-size: 15px;
}
.new input:focus { outline: 2px solid var(--brand); outline-offset: 1px; }
.new button {
  padding: 0 18px; border: 0; border-radius: 11px; font-weight: 620; font-size: 15px;
  background: var(--brand); color: #fff; cursor: pointer;
}
.new button:hover { filter: brightness(1.08); }

.list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.item {
  display: flex; align-items: center; gap: 12px; padding: 12px 14px;
  background: var(--panel); border: 1px solid var(--line); border-radius: 11px;
}
.item label { display: flex; align-items: center; gap: 11px; flex: 1; cursor: pointer; }
.item input[type="checkbox"] { width: 18px; height: 18px; accent-color: var(--good); flex: none; }
.item.done span { color: var(--dim); text-decoration: line-through; }
.del {
  border: 0; background: transparent; color: var(--dim); font-size: 20px; line-height: 1;
  cursor: pointer; padding: 2px 6px; border-radius: 7px;
}
.del:hover { color: #f0616d; background: #2a161b; }

.empty { color: var(--dim); text-align: center; padding: 28px 0; }
.foot {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 20px; color: var(--dim); font-size: 13px;
}
.badge { border: 1px solid var(--line); border-radius: 999px; padding: 3px 10px; font-family: ui-monospace, monospace; }