:root{
  --accent:#4f46e5; --accent-dark:#4338ca; --accent-soft:#eef2ff;
  --ink:#1e293b; --muted:#64748b; --line:#e2e8f0; --bg:#f8fafc; --card:#ffffff;
  --danger:#dc2626; --radius:12px;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg); color:var(--ink); line-height:1.5;
}
.site-header{
  padding:2.5rem 1.5rem 1.5rem; text-align:center;
  border-bottom:1px solid var(--line); background:var(--card);
}
.site-header h1{margin:0;font-size:2rem;letter-spacing:-0.02em}
.tagline{margin:.25rem 0 0;color:var(--muted)}
.layout{
  max-width:1100px;margin:0 auto;padding:1.5rem;
  display:grid;grid-template-columns:340px 1fr;gap:1.5rem;align-items:start;
}
.panel{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:1.25rem;box-shadow:0 1px 2px rgba(15,23,42,.05);
}
h2{margin:0 0 1rem;font-size:1.1rem}
.field{display:flex;flex-direction:column;gap:.3rem;margin-bottom:.9rem}
.field.grow{flex:1;min-width:0}
.field-row{display:flex;gap:.75rem}
.field-row .field{flex:1;min-width:0}
label{font-size:.85rem;font-weight:600;color:var(--muted)}
.req{color:var(--danger)}
input,select,textarea{
  font:inherit;color:var(--ink);background:#fff;border:1px solid var(--line);
  border-radius:8px;padding:.5rem .65rem;width:100%;max-width:100%;
}
textarea{resize:vertical}
input:focus-visible,select:focus-visible,textarea:focus-visible,button:focus-visible{
  outline:2px solid var(--accent);outline-offset:2px;border-color:var(--accent);
}
.error{color:var(--danger);font-size:.8rem;margin:0}
.btn{
  font:inherit;font-weight:600;border-radius:8px;border:1px solid transparent;
  padding:.55rem 1rem;cursor:pointer;
}
.btn.primary{background:var(--accent);color:#fff;width:100%}
.btn.primary:hover{background:var(--accent-dark)}
.btn.ghost{background:#fff;border-color:var(--line);color:var(--ink)}
.btn.ghost:hover{border-color:var(--accent);color:var(--accent)}
.btn.danger{background:#fff;border-color:var(--line);color:var(--danger)}
.btn.danger:hover{border-color:var(--danger)}
.list-head{display:flex;justify-content:space-between;align-items:baseline;flex-wrap:wrap;gap:.5rem}
.counts{display:flex;gap:1rem;font-size:.85rem;color:var(--muted)}
.counts strong{color:var(--accent);font-size:1rem}
.toolbar{display:flex;gap:.75rem;flex-wrap:wrap;margin-bottom:1rem}
.task-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:.6rem}
.task-item{
  border:1px solid var(--line);border-radius:10px;padding:.75rem .9rem;
  display:flex;gap:.75rem;align-items:flex-start;background:#fff;
}
.task-item.done .task-title-text{text-decoration:line-through;color:var(--muted)}
.task-check{margin-top:.25rem;width:1.1rem;height:1.1rem;accent-color:var(--accent);flex-shrink:0}
.task-body{flex:1;min-width:0}
.task-title-text{font-weight:600;overflow-wrap:anywhere}
.task-notes-text{font-size:.85rem;color:var(--muted);margin:.15rem 0 0;overflow-wrap:anywhere;white-space:pre-wrap}
.task-meta{display:flex;gap:.5rem;align-items:center;margin-top:.4rem;font-size:.75rem;color:var(--muted);flex-wrap:wrap}
.badge{border-radius:999px;padding:.1rem .55rem;font-weight:600;text-transform:capitalize}
.badge.low{background:#ecfdf5;color:#047857}
.badge.medium{background:#fffbeb;color:#b45309}
.badge.high{background:#fef2f2;color:#b91c1c}
.due.overdue{color:var(--danger);font-weight:600}
.task-actions{display:flex;gap:.4rem;flex-shrink:0}
.task-actions .btn{padding:.3rem .6rem;font-size:.8rem}
.edit-form{flex:1;min-width:0;display:flex;flex-direction:column;gap:.5rem}
.edit-row{display:flex;gap:.5rem}
.edit-row .field{flex:1;margin:0}
.edit-actions{display:flex;gap:.5rem}
.empty{
  text-align:center;color:var(--muted);padding:2.5rem 1rem;
  border:1px dashed var(--line);border-radius:10px;background:var(--accent-soft);
}
@media (max-width:760px){
  .layout{grid-template-columns:1fr;padding:1rem}
  .site-header{padding:1.75rem 1rem 1.25rem}
  .site-header h1{font-size:1.6rem}
  .field-row{flex-direction:column;gap:0}
}