:root {
  --bg: #f5f6fa;
  --card: #ffffff;
  --text: #1c1f2e;
  --muted: #646a80;
  --line: #e3e5ee;
  --accent: #4f5bd5;
  --accent-dark: #3d48b8;
  --accent-soft: #eceefb;
  --danger: #c0392b;
  --low: #2f7d5a; --low-bg: #e6f4ed;
  --medium: #a86400; --medium-bg: #fdf1dc;
  --high: #b3261e; --high-bg: #fce8e6;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(20, 24, 50, .05), 0 6px 20px rgba(20, 24, 50, .06);
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
.wrap { max-width: 1100px; margin: 0 auto; padding: 0 20px; }

.topbar { background: var(--card); border-bottom: 1px solid var(--line); }
.topbar-inner {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px 24px; min-height: 72px; padding-top: 12px; padding-bottom: 12px;
}
.brand { font-size: 1.35rem; font-weight: 700; letter-spacing: -.01em; margin: 0; display: flex; align-items: center; gap: 10px; }
.logo { width: 26px; height: 26px; border-radius: 8px; background: linear-gradient(135deg, var(--accent), #7c85e6); display: inline-block; }
.stats { display: flex; gap: 8px; list-style: none; margin: 0; padding: 0; }
.stats li {
  display: flex; flex-direction: column; align-items: center; min-width: 72px;
  padding: 6px 12px; border-radius: 10px; background: var(--bg); border: 1px solid var(--line);
}
.stat-num { font-size: 1.25rem; font-weight: 700; line-height: 1.2; font-variant-numeric: tabular-nums; }
.stat-label { font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; color: var(--muted); }

.layout {
  display: grid; grid-template-columns: 1fr; gap: 24px; padding-top: 28px; padding-bottom: 48px;
}
@media (min-width: 900px) {
  .layout { grid-template-columns: 360px 1fr; align-items: start; }
  .card:first-child { position: sticky; top: 24px; }
}
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); padding: 24px; }
h2 { font-size: 1.05rem; margin: 0 0 16px; letter-spacing: -.01em; }

.field { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; min-width: 0; }
.field label, .field > label { font-size: .85rem; font-weight: 600; color: var(--muted); display: flex; flex-direction: column; gap: 6px; }
.req { color: var(--danger); }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
@media (max-width: 420px) { .row { grid-template-columns: 1fr; } }
input, textarea, select {
  font: inherit; color: var(--text); width: 100%; min-width: 0;
  padding: 9px 12px; border: 1px solid #cfd3e2; border-radius: 8px; background: #fff;
}
textarea { resize: vertical; }
input:focus-visible, textarea:focus-visible, select:focus-visible, button:focus-visible, .toggle:focus-visible {
  outline: 3px solid rgba(79, 91, 213, .45); outline-offset: 2px; border-color: var(--accent);
}
input[aria-invalid="true"] { border-color: var(--danger); }
.error { color: var(--danger); font-size: .85rem; margin: 0; }

.btn {
  font: inherit; font-weight: 600; font-size: .92rem; cursor: pointer;
  padding: 9px 16px; border-radius: 8px; border: 1px solid transparent; transition: background .15s, color .15s;
}
.btn-primary { background: var(--accent); color: #fff; width: 100%; }
.btn-primary:hover { background: var(--accent-dark); }
.btn-ghost { background: transparent; color: var(--accent); border-color: var(--line); padding: 6px 12px; }
.btn-ghost:hover { background: var(--accent-soft); }
.btn-ghost.danger { color: var(--danger); }
.btn-ghost.danger:hover { background: #fbeeec; }
.edit-actions .btn-primary { width: auto; }

.tasks-head { display: flex; flex-direction: column; gap: 4px; margin-bottom: 8px; }
.controls { display: grid; grid-template-columns: 1fr; gap: 12px; }
@media (min-width: 600px) { .controls { grid-template-columns: 2fr 1fr 1fr; } }
.controls .field { margin-bottom: 0; }

.task-list { list-style: none; margin: 12px 0 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.task-item { border: 1px solid var(--line); border-radius: 10px; padding: 14px; background: #fff; transition: border-color .15s; }
.task-item:hover { border-color: #c7cbe0; }
.task-item.done { background: #fafafd; }
.task-view { display: grid; grid-template-columns: auto 1fr; gap: 12px; align-items: start; }
.toggle { width: 20px; height: 20px; margin: 3px 0 0; accent-color: var(--accent); cursor: pointer; flex-shrink: 0; }
.task-body { min-width: 0; }
.task-title { margin: 0; font-weight: 600; overflow-wrap: anywhere; }
.done .task-title { text-decoration: line-through; color: var(--muted); }
.task-notes { margin: 4px 0 0; color: var(--muted); font-size: .92rem; white-space: pre-wrap; overflow-wrap: anywhere; }
.task-notes:empty { display: none; }
.meta { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; align-items: center; font-size: .8rem; }
.badge { padding: 2px 9px; border-radius: 999px; font-weight: 600; text-transform: capitalize; }
.badge.low { color: var(--low); background: var(--low-bg); }
.badge.medium { color: var(--medium); background: var(--medium-bg); }
.badge.high { color: var(--high); background: var(--high-bg); }
.due { color: var(--muted); }
.due.overdue { color: var(--danger); font-weight: 600; }
.due:empty { display: none; }
.actions { grid-column: 1 / -1; display: flex; gap: 8px; justify-content: flex-end; }
@media (min-width: 600px) {
  .task-view { grid-template-columns: auto 1fr auto; }
  .actions { grid-column: auto; }
}
.task-edit { margin-top: 4px; }
.task-edit .field:first-child { margin-top: 0; }
.edit-actions { display: flex; gap: 8px; }

.empty { text-align: center; padding: 48px 16px; color: var(--muted); }
.empty-title { font-weight: 600; font-size: 1.05rem; color: var(--text); margin: 0 0 4px; }
.empty-text { margin: 0; }
[hidden] { display: none !important; }