:root{
  --bg:#fbfbfc;
  --card:#ffffff;
  --accent:#2563eb;
  --muted:#6b7280;
  --radius:10px;
  --wrap:900px;
}
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,"Helvetica Neue",Arial;background:var(--bg);color:#0f172a}
.wrap{max-width:var(--wrap);margin:28px auto;padding:18px}
.card{background:var(--card);border-radius:var(--radius);padding:18px;border:1px solid rgba(15,23,42,0.04);box-shadow:0 8px 24px rgba(2,6,23,0.03)}
.todo-header h1{margin:0;font-size:1.5rem}
.muted{color:var(--muted)}
.add-form{display:grid;gap:10px}
.add-form input, .add-form textarea, .controls input, .add-form select{
  width:100%;padding:10px;border:1px solid rgba(15,23,42,0.06);border-radius:8px;font-size:1rem
}
.form-row{display:flex;gap:10px;align-items:center}
.btn{background:var(--accent);color:#fff;border:none;padding:10px 14px;border-radius:8px;cursor:pointer}
.btn.outline{background:transparent;border:1px solid rgba(15,23,42,0.06);color:var(--muted)}
.controls{display:flex;flex-direction:column;gap:10px;margin-top:12px}
.filter-row{display:flex;gap:12px;align-items:center;justify-content:space-between}
.todo-list{list-style:none;margin:12px 0 0 0;padding:0;display:grid;gap:10px}
.todo-item{display:flex;justify-content:space-between;gap:12px;align-items:flex-start;padding:12px;border-radius:8px;background:linear-gradient(180deg, rgba(37,99,235,0.03), #fff);border:1px solid rgba(37,99,235,0.04)}
.todo-left{display:flex;gap:10px;align-items:flex-start;flex:1}
.todo-left .meta{font-size:0.9rem;color:var(--muted)}
.todo-actions{display:flex;gap:8px}
.small-btn{background:transparent;border:1px solid rgba(15,23,42,0.06);padding:6px 8px;border-radius:6px;cursor:pointer}
.done{text-decoration:line-through;opacity:0.6}
@media (max-width:600px){
  .form-row{flex-direction:column}
  .hero{grid-template-columns:1fr}
}