:root {
  --bg: #f6f7fb;
  --panel: #ffffff;
  --ink: #1f2330;
  --muted: #6b7280;
  --line: #e5e7eb;
  --accent: #4f46e5;
  --accent-weak: #eef2ff;
  --accent-strong: #4338ca;
  --danger: #b91c1c;
  --high: #dc2626;
  --medium: #d97706;
  --low: #059669;
  --radius: 12px;
  --shadow: 0 1px 2px rgba(16,24,40,.06), 0 8px 24px rgba(16,24,40,.06);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--ink);
  line-height: 1.5;
  min-height: 100vh;
  -webkit-text-size-adjust: 100%;
}

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px;
  padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

.app-header {
  max-width: 920px;
  margin: 0 auto;
  padding: 32px 20px 8px;
}
.app-header h1 {
  margin: 0;
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--accent-strong);
}
.tagline { margin: 4px 0 0; color: var(--muted); font-size: 14px; }

.app-main {
  max-width: 920px;
  margin: 0 auto;
  padding: 16px 20px 40px;
  display: grid;
  gap: 20px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px;
}

.create-form { display: grid; gap: 14px; }
.field { display: grid; gap: 6px; }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
label { font-size: 13px; font-weight: 600; color: var(--ink); }

input, select, textarea {
  font: inherit;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 9px 11px;
  width: 100%;
}
textarea { resize: vertical; min-height: 44px; }
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-weak);
}

.btn {
  font: inherit;
  font-weight: 600;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 10px 16px;
  cursor: pointer;
  transition: background .15s, color .15s, border-color .15s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-strong); }
.btn-ghost {
  background: transparent;
  color: var(--muted);
  border-color: var(--line);
}
.btn-ghost:hover { color: var(--ink); border-color: #cbd5e1; }
.btn-danger:hover { color: var(--danger); border-color: #fecaca; }

.list-header {
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px; flex-wrap: wrap; margin-bottom: 14px;
}
.list-header h2 { margin: 0; font-size: 18px; font-weight: 700; }

.counts { display: flex; gap: 8px; }
.count {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--accent-weak);
  color: var(--accent-strong);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 13px;
  font-weight: 600;
}
.count-label { color: var(--muted); font-weight: 500; }

.controls {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  margin-bottom: 14px;
}
.filters { display: flex; gap: 8px; }
.filters select { width: auto; }

.task-list {
  list-style: none; margin: 0; padding: 0;
  display: grid; gap: 10px;
}
.task-item {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 12px 14px;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 10px 12px;
  align-items: start;
  background: #fff;
}
.task-item.completed { background: #fafafa; }
.task-item.completed .task-title-text { color: var(--muted); text-decoration: line-through; }

.task-toggle { margin-top: 3px; width: 18px; height: 18px; accent-color: var(--accent); cursor: pointer; }

.task-body { min-width: 0; }
.task-title-text {
  font-weight: 600;
  word-wrap: break-word;
  overflow-wrap: anywhere;
}
.task-notes-text {
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.task-meta { margin-top: 6px; display: flex; gap: 8px; flex-wrap: wrap; font-size: 12px; }
.tag {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 2px 8px; border-radius: 999px;
  font-weight: 600;
  border: 1px solid transparent;
}
.tag.high { color: var(--high); background: #fef2f2; border-color: #fee2e2; }
.tag.medium { color: var(--medium); background: #fffbeb; border-color: #fef3c7; }
.tag.low { color: var(--low); background: #ecfdf5; border-color: #d1fae5; }
.tag.due { color: var(--ink); background: #f3f4f6; border-color: var(--line); }
.tag.overdue { color: var(--high); background: #fef2f2; border-color: #fee2e2; font-weight: 700; }

.task-actions { display: flex; gap: 6px; align-items: center; }
.icon-btn {
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 6px 10px;
  cursor: pointer;
  color: var(--muted);
}
.icon-btn:hover { color: var(--ink); border-color: #cbd5e1; }
.icon-btn.delete:hover { color: var(--danger); border-color: #fecaca; }

.edit-form { display: grid; gap: 10px; grid-column: 1 / -1; }
.edit-form .field-row { grid-template-columns: 1fr 1fr; }

.empty-state {
  text-align: center;
  padding: 32px 16px;
  color: var(--muted);
  border: 1px dashed var(--line);
  border-radius: 10px;
}

.app-footer {
  max-width: 920px;
  margin: 0 auto;
  padding: 0 20px 32px;
  color: var(--muted);
  font-size: 12px;
  text-align: center;
}

@media (max-width: 560px) {
  .field-row { grid-template-columns: 1fr; }
  .controls { grid-template-columns: 1fr; }
  .filters { flex-wrap: wrap; }
  .filters select { width: 100%; }
  .task-item { grid-template-columns: auto 1fr; }
  .task-actions { grid-column: 2; justify-content: flex-end; }
  .counts { width: 100%; justify-content: flex-start; }
}