:root {
  --bg: #ffffff;
  --surface: #fafbfc;
  --surface-hover: #f4f5f7;
  --border: #e4e6eb;
  --border-strong: #d4d6db;
  --text: #0f1419;
  --text-2: #5e6470;
  --text-3: #8a909a;
  --accent: #5e6ad2;
  --accent-soft: #eef0fb;
  --accent-strong: #4854c0;
  --danger: #c0392b;

  --c-blue: #2c5e8a;
  --c-green: #1f9a5b;
  --c-orange: #d2691e;
  --c-red: #c0392b;
  --c-yellow: #b8860b;
  --c-purple: #7a3e9d;
  --c-pink: #b83b6c;
  --c-teal: #2a8b8b;
  --c-gray: #6b7280;
  --c-indigo: #4f46e5;

  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: ui-monospace, "SF Mono", Menlo, Monaco, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button { font: inherit; background: none; border: none; cursor: pointer; padding: 0; color: inherit; }
input, select, textarea { font: inherit; color: inherit; }

.app {
  max-width: 760px;
  margin: 0 auto;
  padding: clamp(28px, 5vw, 48px) clamp(20px, 4vw, 32px) 80px;
}

.head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 28px;
  gap: 16px;
}

.head-title {
  font-size: 15px;
  font-weight: 600;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
}

.head-icon { color: var(--accent); font-size: 18px; line-height: 1; }

.head-right { display: flex; align-items: center; gap: 12px; font-size: 12px; color: var(--text-3); }

.countdown { font-variant-numeric: tabular-nums; }
.countdown.urgent { color: var(--accent); font-weight: 500; }

.sync-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--text-3);
  transition: background 0.25s, box-shadow 0.25s;
}

.sync-dot.connected {
  background: var(--c-green);
  box-shadow: 0 0 0 3px rgba(31, 154, 91, 0.15);
}

.sync-dot.error { background: var(--danger); }

.composer {
  display: flex;
  flex-direction: column;
  gap: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 6px;
  margin-bottom: 22px;
  transition: border-color 0.15s, background 0.15s, box-shadow 0.15s;
  overflow: hidden;
}

.composer:focus-within {
  border-color: var(--accent);
  background: var(--bg);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.composer-main {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 14px;
}

.composer-plus {
  color: var(--text-3);
  font-size: 16px;
  font-weight: 400;
  flex-shrink: 0;
}

.composer:focus-within .composer-plus { color: var(--accent); }

.composer-input {
  flex: 1;
  border: none;
  background: transparent;
  outline: none;
  font-size: 14px;
  color: var(--text);
  font-family: inherit;
  padding: 0;
}

.composer-input::placeholder { color: var(--text-3); }

.kbd {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-3);
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 5px;
  letter-spacing: 0.02em;
  opacity: 0;
  transition: opacity 0.15s;
}

.composer:focus-within .kbd { opacity: 1; }

.composer-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px 10px;
  border-top: 1px solid var(--border);
  flex-wrap: wrap;
}

.composer-manage {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  border-radius: 4px;
  font-size: 11.5px;
  color: var(--text-2);
  background: transparent;
  border: 1px dashed var(--border-strong);
  cursor: pointer;
  transition: background 0.1s, color 0.1s, border-color 0.1s;
  white-space: nowrap;
}

.composer-manage:hover {
  background: var(--surface);
  color: var(--accent);
  border-color: var(--accent);
  border-style: solid;
}

.composer-date {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px 4px 8px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  color: var(--text-2);
  font-size: 12.5px;
  cursor: pointer;
  transition: border-color 0.1s, color 0.1s;
  flex-shrink: 0;
}

.composer-date:hover { border-color: var(--border-strong); color: var(--text); }
.composer-date:focus-within { border-color: var(--accent); }

.composer-date input[type="date"] {
  border: none;
  background: transparent;
  outline: none;
  font-family: inherit;
  font-size: 12.5px;
  color: inherit;
  padding: 0;
  cursor: pointer;
  min-width: 105px;
}

.composer-labels {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  align-items: center;
}

.composer-label-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  border-radius: 4px;
  font-size: 11.5px;
  color: var(--text-2);
  background: var(--bg);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.1s, border-color 0.1s, color 0.1s;
  white-space: nowrap;
}

.composer-label-chip::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--chip-color, var(--text-3));
  flex-shrink: 0;
}

.composer-label-chip:hover { color: var(--text); border-color: var(--border-strong); }

.composer-label-chip.selected {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
  font-weight: 500;
}

.composer-label-chip.selected::before {
  background: var(--chip-color, var(--accent));
}

.composer-subtasks {
  padding: 0 12px 8px;
  border-top: 1px solid var(--border);
}

.composer-subtask-list {
  list-style: none;
  padding: 4px 0 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.composer-subtask-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 2px 0;
}

.composer-subtask-item .sub-bullet {
  width: 13px;
  height: 13px;
  border: 1.5px solid var(--border-strong);
  border-radius: 3px;
  flex-shrink: 0;
}

.composer-subtask-item input {
  flex: 1;
  border: none;
  background: transparent;
  outline: none;
  font-size: 13px;
  color: var(--text);
  padding: 4px 0;
  font-family: inherit;
}

.composer-subtask-item input::placeholder { color: var(--text-3); }

.composer-subtask-item .sub-remove {
  width: 22px;
  height: 22px;
  border-radius: 4px;
  color: var(--text-3);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  flex-shrink: 0;
  transition: background 0.1s, color 0.1s;
}

.composer-subtask-item .sub-remove:hover { background: rgba(192, 57, 43, 0.08); color: var(--danger); }

.composer-add-sub {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 8px;
  margin-top: 6px;
  border-radius: 4px;
  font-size: 12px;
  color: var(--text-2);
  background: transparent;
  cursor: pointer;
  transition: background 0.1s, color 0.1s;
}

.composer-add-sub:hover { color: var(--accent); background: var(--accent-soft); }

.composer-foot {
  display: flex;
  justify-content: flex-end;
  padding: 10px 12px;
  background: var(--bg);
  border-top: 1px solid var(--border);
}

.composer-submit {
  font-size: 13px;
  padding: 8px 18px;
  font-weight: 600;
}

@media (max-width: 520px) {
  .composer-meta { padding: 8px 10px 10px; }
  .composer-date input[type="date"] { min-width: 100px; }
  .composer-foot { padding: 10px; }
  .composer-submit { width: 100%; }
}

.filters {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  margin-bottom: 22px;
  overflow-x: auto;
  scrollbar-width: none;
}

.filters::-webkit-scrollbar { display: none; }

.filter {
  font-size: 12px;
  font-weight: 500;
  padding: 5px 10px;
  border-radius: 4px;
  color: var(--text-2);
  white-space: nowrap;
  border: 1px solid transparent;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: background 0.1s, color 0.1s, border-color 0.1s;
}

.filter:hover { background: var(--surface); color: var(--text); }

.filter.active {
  background: var(--accent-soft);
  color: var(--accent);
  font-weight: 600;
}

.filter .filter-dot {
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--filter-color, var(--text-3));
  display: inline-block;
  flex-shrink: 0;
}

.group { margin-bottom: 24px; }

.group-h {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-3);
  font-weight: 600;
  margin: 0 0 6px;
  padding: 0 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.group-pin { font-size: 12px; }
.group-count { color: var(--text-3); font-weight: 500; }

.toggle-btn {
  font: inherit;
  color: inherit;
  letter-spacing: inherit;
  text-transform: inherit;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
}

.toggle-btn .caret { transition: transform 0.2s; display: inline-block; font-size: 10px; }
.toggle-btn[aria-expanded="false"] .caret { transform: rotate(-90deg); }

.group-completed[data-collapsed="true"] .list { display: none; }

.list { list-style: none; padding: 0; margin: 0; }

.task {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 12px;
  align-items: start;
  padding: 9px 10px;
  border-radius: 6px;
  transition: background 0.1s;
  position: relative;
}

.task:hover { background: var(--surface); }
.task.editing { background: var(--surface); }

.task-check {
  width: 18px;
  height: 18px;
  border-radius: 4px;
  border: 1.5px solid var(--border-strong);
  margin-top: 1px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: transparent;
  flex-shrink: 0;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, color 0.15s;
}

.task-check:hover { border-color: var(--accent); }

.task-check svg { width: 11px; height: 11px; }

.task.completed .task-check {
  background: var(--accent);
  border-color: var(--accent);
  color: white;
}

.task-body { min-width: 0; }

.task-title {
  font-size: 14px;
  font-weight: 500;
  line-height: 1.4;
  margin: 0;
  color: var(--text);
  word-wrap: break-word;
  cursor: text;
}

.task.completed .task-title {
  color: var(--text-3);
  text-decoration: line-through;
}

.task-title-input {
  width: 100%;
  border: none;
  background: transparent;
  outline: none;
  font: inherit;
  padding: 0;
  border-bottom: 1px solid var(--accent);
}

.task-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 10px;
  margin-top: 4px;
}

.task-labels { display: inline-flex; flex-wrap: wrap; gap: 4px 10px; align-items: center; }

.task-due {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11.5px;
  font-weight: 500;
  padding: 1px 7px 1px 6px;
  border-radius: 3px;
  background: var(--due-bg, var(--surface));
  color: var(--due-fg, var(--text-2));
  border: 1px solid var(--due-bd, transparent);
}

.task-due svg { color: var(--due-fg, var(--text-2)); }

.task-due.due-future {
  --due-bg: var(--surface);
  --due-fg: var(--text-2);
  --due-bd: var(--border);
}

.task-due.due-soon {
  --due-bg: #fef3e6;
  --due-fg: #c0710d;
  --due-bd: #f5d9a8;
}

.task-due.due-today {
  --due-bg: #fde7e7;
  --due-fg: #b81d1d;
  --due-bd: #f3b8b8;
}

.task-due.due-overdue {
  --due-bg: #b81d1d;
  --due-fg: #fff;
  --due-bd: #b81d1d;
}

.task-due.completed {
  --due-bg: var(--surface);
  --due-fg: var(--text-3);
  --due-bd: var(--border);
  text-decoration: line-through;
}

.task-label {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 11.5px;
  color: var(--text-2);
}

.task-label::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--lbl-color, var(--text-3));
  flex-shrink: 0;
}

.task-checklist {
  list-style: none;
  padding: 0;
  margin: 6px 0 0;
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.task-checklist li {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--text-2);
  padding-left: 2px;
}

.task-checklist input[type="checkbox"] {
  width: 13px;
  height: 13px;
  margin: 0;
  accent-color: var(--accent);
  cursor: pointer;
  flex-shrink: 0;
}

.task-checklist li.done {
  color: var(--text-3);
  text-decoration: line-through;
}

.task-actions {
  display: flex;
  gap: 4px;
  align-items: center;
  opacity: 0;
  transition: opacity 0.1s;
  flex-shrink: 0;
}

.task:hover .task-actions,
.task:focus-within .task-actions,
.task.editing .task-actions { opacity: 1; }

.task.has-pin .task-actions { opacity: 1; }

.icon-btn {
  width: 26px;
  height: 26px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-3);
  transition: background 0.1s, color 0.1s;
}

.icon-btn:hover { background: var(--border); color: var(--text); }

.icon-btn svg { display: block; }

.task-actions .icon-btn {
  width: 34px;
  height: 34px;
  border-radius: 6px;
  background: transparent;
}

.task-actions .icon-btn svg { width: 18px; height: 18px; }

.task-actions .icon-btn:hover { background: var(--border); color: var(--text); }

.task-actions .icon-btn.pin-btn.active { color: var(--c-orange); background: rgba(210, 105, 30, 0.08); }
.task-actions .icon-btn.pin-btn.active:hover { background: rgba(210, 105, 30, 0.15); }

@media (hover: none) {
  .task-actions { opacity: 1; }
}

.action-menu {
  position: absolute;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.04), 0 8px 24px rgba(15, 20, 25, 0.12);
  padding: 4px;
  min-width: 220px;
  z-index: 50;
}

.action-menu-section { padding: 4px; }
.action-menu-section + .action-menu-section { border-top: 1px solid var(--border); }

.action-menu-heading {
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-3);
  font-weight: 600;
  margin: 4px 8px 4px;
}

.action-menu-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 6px 8px;
  border-radius: 4px;
  font-size: 13px;
  color: var(--text);
  text-align: left;
  transition: background 0.1s;
}

.action-menu-item:hover { background: var(--surface); }
.action-menu-item.danger { color: var(--danger); }
.action-menu-item.danger:hover { background: rgba(192, 57, 43, 0.08); }

.action-menu-chips { display: flex; flex-wrap: wrap; gap: 4px; padding: 4px; }

.action-menu-due {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 2px 4px 4px;
}

.action-menu-due input[type="date"] {
  flex: 1;
  border: 1px solid var(--border);
  background: var(--bg);
  border-radius: 4px;
  padding: 5px 8px;
  font-size: 12.5px;
  color: var(--text);
  outline: none;
  font-family: var(--font);
}

.action-menu-due input[type="date"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px var(--accent-soft);
}

.action-menu-clear {
  font-size: 11.5px;
  color: var(--danger);
  padding: 5px 8px;
  border-radius: 4px;
  transition: background 0.1s;
}

.action-menu-clear:hover { background: rgba(192, 57, 43, 0.08); }

.action-menu-chip {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  border-radius: 4px;
  font-size: 11.5px;
  color: var(--text-2);
  background: var(--surface);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.1s, border-color 0.1s, color 0.1s;
}

.action-menu-chip::before {
  content: "";
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--chip-color, var(--text-3));
  flex-shrink: 0;
}

.action-menu-chip:hover { background: var(--surface-hover); color: var(--text); }

.action-menu-chip.selected {
  border-color: var(--chip-color, var(--accent));
  color: var(--text);
  background: var(--bg);
  font-weight: 500;
}

.empty {
  text-align: center;
  color: var(--text-3);
  margin: 60px 0;
  font-size: 13px;
}

.foot {
  margin-top: 56px;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-size: 12px;
  color: var(--text-3);
}

.text-link {
  color: var(--text-2);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
  text-decoration-color: var(--text-3);
}

.text-link:hover { color: var(--accent); text-decoration-color: var(--accent); }

.dot-sep { color: var(--text-3); }
.muted { color: var(--text-3); }

.btn-primary {
  font: inherit;
  font-size: 13px;
  font-weight: 500;
  padding: 6px 12px;
  background: var(--accent);
  color: white;
  border-radius: 4px;
  transition: background 0.15s;
}

.btn-primary:hover { background: var(--accent-strong); }

.dialog {
  border: none;
  background: var(--bg);
  padding: 0;
  border-radius: 8px;
  max-width: 480px;
  width: calc(100vw - 32px);
  box-shadow: 0 24px 80px rgba(15, 20, 25, 0.22);
  color: var(--text);
}

.dialog::backdrop { background: rgba(15, 20, 25, 0.4); backdrop-filter: blur(4px); }

.dialog-inner { padding: 22px; }

.dialog-h {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.dialog-h h2 { font-size: 15px; font-weight: 600; margin: 0; }

.labels-list {
  list-style: none;
  padding: 0;
  margin: 0 0 14px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.labels-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 4px;
  border-radius: 4px;
}

.labels-list li:hover { background: var(--surface); }

.labels-list .label-dot { width: 9px; height: 9px; border-radius: 2px; flex-shrink: 0; }

.labels-list input[type="text"] {
  flex: 1;
  border: none;
  background: transparent;
  outline: none;
  font-size: 13.5px;
  padding: 4px 6px;
  border-radius: 3px;
}

.labels-list input[type="text"]:focus { background: var(--surface); }

.labels-list select {
  border: 1px solid var(--border);
  background: var(--bg);
  border-radius: 4px;
  padding: 4px 6px;
  font-size: 11.5px;
  color: var(--text-2);
}

.labels-list .remove-btn {
  width: 24px;
  height: 24px;
  border-radius: 4px;
  color: var(--text-3);
  display: flex;
  align-items: center;
  justify-content: center;
}

.labels-list .remove-btn:hover { background: rgba(192, 57, 43, 0.1); color: var(--danger); }

.new-label-form {
  display: flex;
  gap: 6px;
  align-items: center;
  padding-top: 14px;
  border-top: 1px solid var(--border);
}

.new-label-form input {
  flex: 1;
  border: 1px solid var(--border);
  background: var(--bg);
  border-radius: 4px;
  padding: 7px 10px;
  font-size: 13.5px;
  outline: none;
}

.new-label-form input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }

.new-label-form select {
  border: 1px solid var(--border);
  background: var(--bg);
  border-radius: 4px;
  padding: 7px 10px;
  font-size: 12px;
  color: var(--text-2);
}

@media (max-width: 520px) {
  .task { padding: 10px 8px; gap: 10px; }
  .task-title { font-size: 14px; }
  .foot { flex-wrap: wrap; }
  .new-label-form { flex-wrap: wrap; }
  .new-label-form input { width: 100%; }
}