:root { --accent: #5b4cf0; --bg: #f4f2ff; --text: #1c1b29; --muted: #6b6a80; --line: #ececf4; }
* { box-sizing: border-box; }
body { margin: 0; min-height: 100vh; font-family: Inter, system-ui, sans-serif; background: var(--bg); color: var(--text); }
.card { max-width: 540px; margin: 40px auto; padding: 28px; background: #fff; border-radius: 18px; box-shadow: 0 20px 50px -20px rgba(64, 50, 160, .35); }
@media (max-width: 580px) { .card { margin: 0; border-radius: 0; min-height: 100vh; } }
h1 { margin: 0; font-size: 1.75rem; letter-spacing: -.02em; }
.sub { margin: 4px 0 20px; color: var(--muted); font-size: .9rem; }
.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
.add { display: flex; gap: 8px; }
input[type=text] { flex: 1; min-width: 0; padding: 12px 14px; border: 1px solid #dcdaec; border-radius: 10px; font: inherit; }
input[type=text]:focus, button:focus-visible { outline: 3px solid rgba(91, 76, 240, .35); outline-offset: 1px; border-color: var(--accent); }
button { font: inherit; cursor: pointer; }
.primary { padding: 12px 18px; border: 0; border-radius: 10px; background: var(--accent); color: #fff; font-weight: 600; transition: filter .15s; }
.primary:hover { filter: brightness(1.1); }
.filters { display: flex; gap: 6px; margin: 18px 0 6px; }
.filters button { padding: 6px 14px; border: 1px solid var(--line); border-radius: 999px; background: #fff; color: var(--muted); font-size: .85rem; font-weight: 500; }
.filters button:hover { border-color: var(--accent); }
.filters button.active { background: var(--accent); border-color: var(--accent); color: #fff; }
ul { list-style: none; margin: 0; padding: 0; }
li { display: flex; align-items: center; gap: 12px; padding: 13px 4px; border-bottom: 1px solid var(--line); }
li input[type=checkbox] { width: 20px; height: 20px; accent-color: var(--accent); cursor: pointer; }
li span { flex: 1; word-break: break-word; }
li.done span { text-decoration: line-through; color: #9a99ad; }
li .del { padding: 4px 9px; border: 0; border-radius: 8px; background: none; color: #aaa; font-size: 1rem; }
li .del:hover { background: #fdecec; color: #d33; }
.muted { color: var(--muted); text-align: center; margin: 24px 0; }
.muted.error { color: #d33; }
footer { text-align: right; margin-top: 10px; }
.link { border: 0; background: none; color: var(--muted); font-size: .85rem; text-decoration: underline; }
.link:hover { color: var(--accent); }
</parameter>