:root {
  --bg: #f0f2f5;
  --surface: #ffffff;
  --border: #e2e5ea;
  --text: #1a1a2e;
  --text-muted: #6b7280;
  --primary: #4f46e5;
  --primary-hover: #4338ca;

  --home: #16a34a;
  --home-bg: #dcfce7;
  --work: #2563eb;
  --work-bg: #dbeafe;
  --apps: #7c3aed;
  --apps-bg: #ede9fe;

  --overdue: #dc2626;
  --overdue-bg: #fee2e2;
  --due-soon: #d97706;
  --due-soon-bg: #fef3c7;

  --radius: 10px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,.1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  font-size: 15px;
  line-height: 1.5;
}

:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
  border-radius: 4px;
}

/* ── Dialogs ───────────────────────────────────────────────────────────────── */

dialog {
  border: none;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md), 0 0 0 1px rgba(0,0,0,.06);
  padding: 1.75rem;
  max-width: 480px;
  width: calc(100% - 2rem);
  max-height: 90dvh;
  overflow-y: auto;
  margin: auto;
}

dialog::backdrop { background: rgba(0,0,0,.45); }

dialog h2 {
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 1.25rem;
}

dialog p.setup-hint {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
  line-height: 1.6;
}

dialog p.setup-hint a {
  color: var(--primary);
}

/* ── Forms ─────────────────────────────────────────────────────────────────── */

form { display: flex; flex-direction: column; gap: 1rem; }

label {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  font-size: 0.875rem;
  font-weight: 500;
}

input[type="text"],
input[type="password"],
input[type="date"],
select,
textarea {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 7px;
  font-size: 0.9375rem;
  font-family: inherit;
  background: var(--surface);
  color: var(--text);
  width: 100%;
  transition: border-color .15s, box-shadow .15s;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79,70,229,.15);
}

textarea { resize: vertical; min-height: 80px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

.form-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
  padding-top: 0.25rem;
}

.form-actions .btn-danger { margin-right: auto; }

/* ── Buttons ───────────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  border: 1px solid transparent;
  border-radius: 7px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background .15s, border-color .15s, box-shadow .15s;
  font-family: inherit;
  white-space: nowrap;
  line-height: 1.4;
}

.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }

.btn-secondary { background: var(--surface); color: var(--text); border-color: var(--border); }
.btn-secondary:hover { background: var(--bg); }

.btn-danger { background: var(--surface); color: var(--overdue); border-color: #fca5a5; }
.btn-danger:hover { background: var(--overdue-bg); }

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border-color: transparent;
  padding: 0.4rem 0.6rem;
  font-size: 1rem;
}
.btn-ghost:hover { background: var(--bg); color: var(--text); }

.btn-icon {
  background: transparent;
  color: var(--text-muted);
  border: none;
  padding: 0.25rem 0.5rem;
  border-radius: 5px;
  cursor: pointer;
  font-size: 0.8125rem;
  font-family: inherit;
  transition: background .15s;
}
.btn-icon:hover { background: var(--border); color: var(--text); }

/* ── Sticky top wrapper (header + status bar) ──────────────────────────────── */

.sticky-top {
  position: sticky;
  top: 0;
  z-index: 100;
}

/* ── App header ────────────────────────────────────────────────────────────── */

.app-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0.875rem 1.25rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.app-title {
  font-size: 1.125rem;
  font-weight: 700;
  letter-spacing: -.02em;
  cursor: pointer;
  user-select: none;
}

.app-title:hover { opacity: .75; }

.header-actions { display: flex; gap: 0.5rem; align-items: center; }

.header-controls {
  display: flex;
  align-items: flex-end;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.filter-group {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.filter-group-label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text-muted);
  padding-left: 0.375rem;
}

/* ── Filter / view pills ───────────────────────────────────────────────────── */

.pill-group {
  display: flex;
  gap: 0.25rem;
  background: var(--bg);
  padding: 0.25rem;
  border-radius: 20px;
}

.pill-btn {
  padding: 0.3125rem 0.8125rem;
  border: none;
  border-radius: 16px;
  background: transparent;
  font-size: 0.8125rem;
  font-weight: 500;
  cursor: pointer;
  color: var(--text-muted);
  font-family: inherit;
  transition: background .15s, color .15s, box-shadow .15s;
}

.pill-btn:hover { color: var(--text); background: var(--surface); }
.pill-btn.active {
  background: var(--surface);
  color: var(--text);
  box-shadow: var(--shadow-sm), 0 0 0 1px var(--border);
}

/* Domain-coloured active pill */
.pill-btn.active[data-domain="home"] { color: var(--home); }
.pill-btn.active[data-domain="work"] { color: var(--work); }
.pill-btn.active[data-domain="apps"] { color: var(--apps); }

/* ── Status bar ────────────────────────────────────────────────────────────── */

/* ── Demo banner ───────────────────────────────────────────────────────────── */

#demo-banner[hidden] { display: none; }

#demo-banner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  padding: 0.5rem 1.25rem;
  background: var(--apps-bg);
  border-bottom: 1px solid #c4b5fd;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--apps);
}

.btn-link {
  background: none;
  border: none;
  color: var(--apps);
  font-size: 0.875rem;
  font-weight: 700;
  cursor: pointer;
  font-family: inherit;
  text-decoration: underline;
  padding: 0;
}

.btn-link:hover { opacity: .75; }

/* ── Status bar ────────────────────────────────────────────────────────────── */

#status-bar {
  padding: 0.375rem 1.25rem;
  font-size: 0.8125rem;
  font-weight: 500;
  text-align: center;
  background: #fef3c7;
  border-bottom: 1px solid #fde68a;
  color: var(--due-soon);
}

#status-bar.success { background: var(--home-bg); border-color: #86efac; color: var(--home); }
#status-bar.error { background: var(--overdue-bg); border-color: #fca5a5; color: var(--overdue); }

/* ── Main content ──────────────────────────────────────────────────────────── */

#main-content { padding: 1.25rem; }

/* ── Loading screen ────────────────────────────────────────────────────────── */

#loading-screen[hidden] { display: none; }

#loading-screen {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 5rem 1rem;
  gap: 1rem;
  color: var(--text-muted);
  font-size: 0.9375rem;
}

.loading-spinner {
  width: 2rem;
  height: 2rem;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* ── Kanban ────────────────────────────────────────────────────────────────── */

.kanban-board {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  align-items: start;
}

.kanban-board.hide-done {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.kanban-board.hide-done .kanban-column[data-status="done"] {
  display: none;
}

@media (max-width: 700px) {
  .kanban-board { grid-template-columns: 1fr; }
}

.kanban-column {
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  overflow: hidden;
  min-height: 120px;
  transition: outline .1s;
}

.kanban-column.drag-over {
  outline: 2px dashed var(--primary);
  outline-offset: -2px;
  background: rgba(79,70,229,.04);
}

.column-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.625rem 0.875rem;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.column-header-left {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.column-header h2 {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text-muted);
}

.column-count {
  font-size: 0.6875rem;
  font-weight: 600;
  background: var(--bg);
  color: var(--text-muted);
  padding: 0.125rem 0.5rem;
  border-radius: 10px;
  min-width: 1.25rem;
  text-align: center;
  border: 1px solid var(--border);
}

.column-cards {
  padding: 0.625rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  min-height: 60px;
}

/* ── Task card ─────────────────────────────────────────────────────────────── */

.task-card {
  background: var(--surface);
  border-radius: 8px;
  padding: 0.75rem;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  border-left: 3px solid transparent;
  border: 1px solid var(--border);
  border-left: 3px solid transparent;
  transition: box-shadow .15s, transform .1s;
  user-select: none;
}

.task-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.task-card.dragging { opacity: .45; transform: rotate(1.5deg) scale(1.02); }

.task-card[data-domain="home"] { border-left-color: var(--home); }
.task-card[data-domain="work"] { border-left-color: var(--work); }
.task-card[data-domain="apps"] { border-left-color: var(--apps); }

.task-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.5rem;
}

.task-title {
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.35;
  flex: 1;
}

.task-card[data-status="done"] .task-title {
  text-decoration: line-through;
  color: var(--text-muted);
}

/* ── Badges ────────────────────────────────────────────────────────────────── */

.domain-badge {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  padding: 0.125rem 0.5rem;
  border-radius: 10px;
  text-transform: uppercase;
  letter-spacing: .03em;
  flex-shrink: 0;
}

.domain-badge[data-domain="home"] { background: var(--home-bg); color: var(--home); }
.domain-badge[data-domain="work"] { background: var(--work-bg); color: var(--work); }
.domain-badge[data-domain="apps"] { background: var(--apps-bg); color: var(--apps); }

.status-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.2rem 0.625rem;
  border-radius: 10px;
  white-space: nowrap;
}

.status-badge[data-status="todo"] { background: #f3f4f6; color: #374151; }
.status-badge[data-status="in-progress"] { background: var(--work-bg); color: var(--work); }
.status-badge[data-status="done"] { background: var(--home-bg); color: var(--home); }

.due-date-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.due-date-badge.overdue { color: var(--overdue); font-weight: 600; }
.due-date-badge.due-soon { color: var(--due-soon); font-weight: 600; }

/* ── List view ─────────────────────────────────────────────────────────────── */

.task-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--surface);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border);
}

.task-table th {
  padding: 0.625rem 1rem;
  text-align: left;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}

.task-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.9375rem;
  vertical-align: middle;
}

.task-table tbody tr { cursor: pointer; transition: background .1s; }
.task-table tbody tr:hover { background: var(--bg); }
.task-table tbody tr:last-child td { border-bottom: none; }
.task-table .done-title { text-decoration: line-through; color: var(--text-muted); }
.empty-cell { text-align: center; padding: 3rem 1rem; color: var(--text-muted); font-size: 0.9375rem; }
.muted { color: var(--text-muted); }

.complete-cell { width: 2.5rem; padding-right: 0; }

.complete-btn {
  width: 1.375rem;
  height: 1.375rem;
  border-radius: 50%;
  border: 2px solid var(--border);
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6875rem;
  font-weight: 700;
  color: transparent;
  transition: border-color .15s, background .15s, color .15s, transform .1s;
  flex-shrink: 0;
}

.complete-btn:hover:not(.is-done) {
  border-color: var(--home);
  background: var(--home-bg);
  transform: scale(1.12);
}

.complete-btn.is-done {
  border-color: var(--home);
  background: var(--home);
  color: #fff;
  cursor: default;
}


.empty-state {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-muted);
  font-size: 0.9375rem;
}

/* ── Responsive tweaks ─────────────────────────────────────────────────────── */

@media (max-width: 480px) {
  .header-controls { gap: 0.5rem; }
  .pill-group { flex-wrap: wrap; }
  .pill-btn { padding: 0.3rem 0.625rem; font-size: 0.75rem; }
  .task-table th:nth-child(3),
  .task-table td:nth-child(3) { display: none; }
  dialog { padding: 1.25rem; }
}