* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: #f4f6fb;
  color: #222;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 24px;
  background: #1e293b;
  color: #fff;
}
.topbar h1 { margin: 0; font-size: 1.2rem; }
.topbar .user { display: flex; align-items: center; gap: 12px; }
.link { background: none; border: none; color: #cbd5e1; cursor: pointer; }

main { max-width: 880px; margin: 24px auto; padding: 0 16px; }

.toolbar {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}
.filters { display: flex; gap: 12px; }
.filters label { display: flex; flex-direction: column; font-size: 0.85rem; color: #475569; }
.filters input, .filters select { padding: 6px 8px; border: 1px solid #cbd5e1; border-radius: 6px; }

button {
  padding: 8px 14px;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  background: #fff;
  cursor: pointer;
  font-size: 0.9rem;
}
button.primary { background: #2563eb; color: #fff; border-color: #2563eb; }
button.danger { background: #fee2e2; border-color: #fecaca; color: #b91c1c; }

.task-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.task {
  background: #fff;
  border-radius: 10px;
  padding: 14px 16px;
  display: flex;
  justify-content: space-between;
  gap: 12px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  border-left: 4px solid #cbd5e1;
}
.task.priority-high   { border-left-color: #dc2626; }
.task.priority-medium { border-left-color: #f59e0b; }
.task.priority-low    { border-left-color: #10b981; }
.task.status-done .title { text-decoration: line-through; color: #94a3b8; }
.task .title { font-weight: 600; }
.task .meta { display: flex; gap: 8px; margin: 4px 0; flex-wrap: wrap; }
.badge { font-size: 0.75rem; padding: 2px 8px; border-radius: 999px; background: #e2e8f0; }
.due { font-size: 0.8rem; color: #475569; }
.task-actions { display: flex; gap: 6px; flex-shrink: 0; }
.task p { margin: 4px 0 0; color: #475569; font-size: 0.9rem; }
.empty { background: #fff; padding: 20px; border-radius: 10px; text-align: center; color: #94a3b8; }

.modal { display: none; position: fixed; inset: 0; background: rgba(15, 23, 42, 0.5); align-items: center; justify-content: center; padding: 16px; }
.modal.open { display: flex; }
.modal .card { background: #fff; border-radius: 12px; padding: 20px; width: 100%; max-width: 420px; display: flex; flex-direction: column; gap: 10px; }
.modal label, .auth label { display: flex; flex-direction: column; font-size: 0.85rem; gap: 4px; color: #475569; }
.modal input, .modal textarea, .modal select, .auth input { padding: 8px 10px; border: 1px solid #cbd5e1; border-radius: 6px; font-size: 0.95rem; }
.modal .actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 6px; }

.auth { background: #1e293b; min-height: 100vh; display: flex; align-items: center; }
.auth-grid { display: grid; gap: 16px; max-width: 760px; width: 100%; margin: 0 auto; padding: 24px; grid-template-columns: 1fr 1fr; }
.auth .card { background: #fff; padding: 24px; border-radius: 12px; display: flex; flex-direction: column; gap: 10px; }
.auth #msg { grid-column: 1 / -1; color: #fecaca; min-height: 1.2em; margin: 0; }
.auth #msg.ok { color: #bbf7d0; }

@media (max-width: 640px) {
  .auth-grid { grid-template-columns: 1fr; }
  .task { flex-direction: column; }
  .task-actions { justify-content: flex-end; }
}