:root {
  color-scheme: light;
  --bg: #eef3fb;
  --surface: rgba(255, 255, 255, 0.86);
  --surface-strong: #ffffff;
  --text: #1d2737;
  --muted: #6d7a8c;
  --border: rgba(35, 55, 85, 0.12);
  --primary: #4568f0;
  --primary-strong: #2f4ed8;
  --danger: #e5484d;
  --shadow: 0 24px 70px rgba(44, 64, 105, 0.14);
  --radius: 22px;
  --work: #3b82f6;
  --home: #f97316;
  --study: #8b5cf6;
  --sport: #10b981;
  --important: #ef4444;
}

body.dark {
  color-scheme: dark;
  --bg: #101624;
  --surface: rgba(25, 34, 52, 0.82);
  --surface-strong: #172033;
  --text: #ecf2ff;
  --muted: #9ba8bd;
  --border: rgba(219, 229, 255, 0.12);
  --primary: #7c97ff;
  --primary-strong: #607cff;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.34);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Microsoft JhengHei", "Segoe UI", system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(69, 104, 240, 0.22), transparent 36rem),
    radial-gradient(circle at bottom right, rgba(16, 185, 129, 0.18), transparent 32rem),
    var(--bg);
}

button, input, select, textarea { font: inherit; }
button { cursor: pointer; }

.app-shell {
  display: grid;
  grid-template-columns: 320px 1fr;
  gap: 22px;
  padding: 22px;
  min-height: 100vh;
}

.sidebar, .main { min-width: 0; }
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 10px 4px;
}
.brand-icon {
  display: grid;
  place-items: center;
  width: 58px;
  height: 58px;
  border-radius: 18px;
  background: linear-gradient(135deg, var(--primary), #10b981);
  font-size: 30px;
  box-shadow: var(--shadow);
}
.brand h1 { margin: 0; font-size: 25px; }
.brand p { margin: 4px 0 0; color: var(--muted); }

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  backdrop-filter: blur(18px);
}
.compact { padding: 18px; }
.compact h2 {
  margin: 0 0 14px;
  font-size: 17px;
}

.primary-btn, .ghost-btn, .danger-btn, .icon-btn {
  border: 0;
  border-radius: 14px;
  transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.primary-btn {
  padding: 13px 18px;
  color: white;
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  box-shadow: 0 14px 28px rgba(69, 104, 240, .26);
  font-weight: 700;
}
.ghost-btn {
  padding: 10px 14px;
  color: var(--text);
  background: var(--surface-strong);
  border: 1px solid var(--border);
}
.danger-btn {
  padding: 10px 14px;
  color: white;
  background: var(--danger);
}
.icon-btn {
  width: 38px;
  height: 38px;
  color: var(--text);
  background: transparent;
}
button:hover { transform: translateY(-1px); }
button:active { transform: translateY(0); }

.main {
  display: flex;
  flex-direction: column;
  gap: 18px;
}
.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
}
.calendar-nav, .toolbar-actions, .view-switch {
  display: flex;
  align-items: center;
  gap: 10px;
}
.calendar-nav h2 { margin: 0 0 0 8px; font-size: 28px; }
.lunar-text {
  font-size: 13px;
  font-weight: 600;
  color: var(--muted);
}
.view-switch {
  padding: 5px;
  border-radius: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
}
.view-btn {
  border: 0;
  border-radius: 12px;
  padding: 8px 14px;
  color: var(--muted);
  background: transparent;
}
.view-btn.active {
  color: #fff;
  background: var(--primary);
}

.controls {
  display: grid;
  grid-template-columns: 1fr 170px 160px 150px;
  gap: 14px;
  padding: 16px;
}
.daily-memo { padding: 16px; }
.daily-memo-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}
.daily-memo h3 { margin: 0; font-size: 16px; }
.field {
  display: flex;
  flex-direction: column;
  gap: 7px;
}
.field.full { grid-column: 1 / -1; }
.checkbox-field { justify-content: end; }
.checkbox-field label {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 43px;
}
.checkbox-field input { width: auto; }
label {
  font-size: 13px;
  color: var(--muted);
  font-weight: 700;
}
input, select, textarea {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 11px 13px;
  color: var(--text);
  background: var(--surface-strong);
  outline: none;
}
input:focus, select:focus, textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(69, 104, 240, .12);
}
textarea { resize: vertical; }

.calendar-view { padding: 18px; min-height: 620px; }
.day-layout {
  display: grid;
  grid-template-columns: 92px 1fr;
  gap: 0;
}
.hour-row, .day-task-lane {
  min-height: 66px;
  border-bottom: 1px dashed var(--border);
}
.hour-row {
  color: var(--muted);
  font-size: 13px;
  padding-top: 4px;
}
.day-task-lane { position: relative; }

.timeline-wrap {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 0;
}
.timeline-hours {
  display: flex;
  flex-direction: column;
}
.timeline-hour-row {
  box-sizing: border-box;
  border-top: 1px dashed var(--border);
  color: var(--muted);
  font-size: 12px;
  padding-top: 2px;
}
.timeline-lane {
  position: relative;
  border-left: 1px solid var(--border);
  border-top: 1px dashed var(--border);
}
.timeline-block {
  position: absolute;
  box-sizing: border-box;
  padding: 5px 8px 8px;
  border-radius: 10px;
  background: rgba(69, 104, 240, .16);
  border: 1px solid var(--border);
  border-left: 4px solid var(--category-color, var(--primary));
  overflow: hidden;
  cursor: pointer;
}
.timeline-block.done { opacity: .55; }
.timeline-block.done .timeline-block-title { text-decoration: line-through; }
.timeline-block.conflict { box-shadow: inset 0 0 0 1px var(--danger); }
.timeline-block-title {
  font-weight: 800;
  font-size: 13px;
  line-height: 1.3;
  padding-right: 20px;
}
.timeline-block-time {
  font-size: 11px;
  color: var(--muted);
  margin-top: 2px;
}
.timeline-block-check {
  position: absolute;
  top: 4px;
  right: 6px;
}
.timeline-block-check input { width: auto; }
.timeline-resize-handle {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 10px;
  cursor: ns-resize;
}
.timeline-resize-handle::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: 2px;
  width: 24px;
  height: 3px;
  border-radius: 2px;
  background: var(--muted);
  opacity: .5;
  transform: translateX(-50%);
}

.week-grid, .month-grid {
  display: grid;
  gap: 10px;
}
.week-grid { grid-template-columns: repeat(7, minmax(130px, 1fr)); }
.month-grid { grid-template-columns: repeat(7, minmax(110px, 1fr)); }
.week-day, .month-day {
  min-height: 142px;
  padding: 12px;
  border-radius: 18px;
  background: var(--surface-strong);
  border: 1px solid var(--border);
}
.week-day.today, .month-day.today {
  border-color: var(--primary);
  box-shadow: inset 0 0 0 1px var(--primary);
}
.day-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}
.month-day.outside { opacity: .42; }

.month-day.holiday, .week-day.holiday {
  border-color: rgba(229, 72, 77, .45);
  background: rgba(229, 72, 77, .06);
}
.month-day.holiday .day-head > span:first-child,
.week-day.holiday .day-head > span:first-child {
  color: var(--danger);
}
.holiday-label {
  margin: -4px 0 8px;
  font-size: 11px;
  font-weight: 700;
  color: var(--danger);
}
.lunar-mini {
  margin: -2px 0 6px;
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
}
.holiday-banner {
  margin-bottom: 12px;
  padding: 8px 14px;
  border-radius: 14px;
  background: rgba(229, 72, 77, .12);
  border: 1px solid rgba(229, 72, 77, .35);
  color: var(--danger);
  font-weight: 700;
  font-size: 13px;
}

.task-card {
  position: relative;
  margin-bottom: 9px;
  padding: 11px 12px 11px 14px;
  border-radius: 15px;
  background: rgba(69, 104, 240, .1);
  border: 1px solid var(--border);
  overflow: hidden;
}
.task-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 5px;
  height: 100%;
  background: var(--category-color, var(--primary));
}
.task-card.pinned { box-shadow: inset 0 0 0 1px rgba(245, 158, 11, .55); }
.task-card.overdue {
  background: rgba(229, 72, 77, .12);
  border-color: rgba(229, 72, 77, .45);
}
.task-card.done { opacity: .58; }
.task-card.done .task-title { text-decoration: line-through; }
.task-card.dragging { opacity: .4; }
.task-top {
  display: flex;
  align-items: flex-start;
  gap: 8px;
}
.task-title {
  flex: 1;
  min-width: 0;
  font-weight: 800;
  line-height: 1.35;
  word-break: break-word;
}
.task-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 8px;
  color: var(--muted);
  font-size: 12px;
}
.subtask-list {
  margin: 8px 0 0 26px;
  padding: 0;
  color: var(--muted);
  font-size: 13px;
}
.subtask-list li { margin: 3px 0; }
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 7px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--border);
}
.priority-high { color: #ef4444; }
.priority-medium { color: #f59e0b; }
.priority-low { color: #10b981; }
.pinned-badge { color: #b45309; }
.overdue-badge { color: #dc2626; }
.tag-badge { color: var(--primary-strong); }
.active-mode {
  color: #fff;
  background: var(--primary) !important;
}
.todo-list-mode {
  display: grid;
  gap: 10px;
}
.task-actions {
  display: flex;
  gap: 4px;
}
.small-btn {
  border: 0;
  color: var(--muted);
  background: transparent;
  padding: 2px 4px;
}
.empty-state {
  display: grid;
  place-items: center;
  min-height: 420px;
  color: var(--muted);
  text-align: center;
}
.empty-state strong { color: var(--text); }

.progress-ring {
  width: 132px;
  height: 132px;
  margin: 8px auto;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: conic-gradient(var(--primary) var(--progress, 0%), rgba(130, 150, 180, .18) 0);
}
.progress-ring span {
  display: grid;
  place-items: center;
  width: 96px;
  height: 96px;
  border-radius: 50%;
  background: var(--surface-strong);
  font-size: 24px;
  font-weight: 900;
}
.muted { color: var(--muted); }
.center { text-align: center; }

.chart-title { margin: 14px 0 4px; font-size: 12px; text-align: center; }
.weekly-chart {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 108px;
  padding-top: 6px;
}
.chart-col {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  gap: 4px;
  height: 100%;
}
.chart-value {
  font-size: 11px;
  color: var(--muted);
  font-weight: 700;
}
.chart-bar {
  width: 100%;
  max-width: 22px;
  height: var(--bar-height, 4%);
  min-height: 4px;
  border-radius: 6px 6px 2px 2px;
  background: linear-gradient(180deg, var(--primary), var(--primary-strong));
  transition: height .2s ease;
}
.chart-bar-today { background: linear-gradient(180deg, #10b981, #0f9c73); }
.chart-label {
  font-size: 11px;
  color: var(--muted);
  white-space: nowrap;
}
.top-three { margin: 0; padding-left: 22px; }
.top-three li { margin: 9px 0; }
.empty-list:empty::after {
  content: "尚無重點事項";
  color: var(--muted);
}

.habit-list {
  display: flex;
  flex-direction: column;
  gap: 9px;
}
.habit-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 9px 10px;
  border-radius: 14px;
  background: var(--surface-strong);
  border: 1px solid var(--border);
}
.habit-actions, .category-actions {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}
.habit-actions button, .category-actions button {
  min-width: 44px;
  border: 0;
  border-radius: 14px;
  color: white;
  background: var(--primary);
}
.category-actions input[type="color"] {
  width: 48px;
  min-width: 48px;
  padding: 4px;
}
.template-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.template-item {
  display: flex;
  align-items: center;
  gap: 6px;
}
.template-apply {
  flex: 1;
  text-align: left;
  padding: 9px 10px;
  border-radius: 14px;
  color: var(--text);
  background: var(--surface-strong);
  border: 1px solid var(--border);
}
.category-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.category-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 9px 10px;
  border-radius: 14px;
  background: var(--surface-strong);
  border: 1px solid var(--border);
}
.category-name {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}
.color-dot {
  width: 13px;
  height: 13px;
  border-radius: 999px;
  background: var(--dot-color);
  box-shadow: 0 0 0 3px rgba(130, 150, 180, .14);
}
.streak { color: var(--muted); font-size: 12px; white-space: nowrap; }

.task-dialog {
  width: min(720px, calc(100vw - 28px));
  border: 0;
  border-radius: 24px;
  color: var(--text);
  background: var(--surface-strong);
  box-shadow: var(--shadow);
}
.task-dialog::backdrop { background: rgba(6, 10, 20, .45); backdrop-filter: blur(4px); }
.dialog-header, .dialog-actions {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 12px;
}
.dialog-header h2 { margin: 0; }
.form-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
  margin: 18px 0;
}
.settings-grid { grid-template-columns: repeat(2, 1fr); }
.dialog-actions { grid-template-columns: auto 1fr auto auto; }
.conflict-warning {
  margin: -4px 0 14px;
  padding: 12px 14px;
  border-radius: 14px;
  color: #9a3412;
  background: #ffedd5;
  border: 1px solid #fed7aa;
}
.pomodoro-dialog { width: min(420px, calc(100vw - 28px)); }
.pomodoro-body {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 16px 0 4px;
}
.pomodoro-settings {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.pomodoro-mode {
  margin: 4px 0 0;
  text-align: center;
  color: var(--muted);
  font-weight: 700;
}
.pomodoro-display {
  text-align: center;
  font-size: 52px;
  font-weight: 900;
  letter-spacing: 2px;
  padding: 18px 0;
  border-radius: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
}
.pomodoro-dialog.is-break .pomodoro-display { color: var(--sport); }
.pomodoro-actions {
  display: flex;
  gap: 10px;
}
.pomodoro-actions button { flex: 1; }
.pomodoro-actions button:disabled { opacity: .5; cursor: not-allowed; transform: none; }

.cloud-sync-dialog { width: min(440px, calc(100vw - 28px)); }
.cloud-sync-body {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin: 16px 0 4px;
}
.cloud-sync-body code {
  padding: 1px 6px;
  border-radius: 6px;
  background: var(--surface);
  border: 1px solid var(--border);
}

.toast {
  position: fixed;
  right: 22px;
  bottom: 22px;
  padding: 12px 16px;
  border-radius: 14px;
  color: white;
  background: #111827;
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(10px);
  pointer-events: none;
  transition: .2s ease;
}
.toast.show { opacity: 1; transform: translateY(0); }

body.widget-mode .sidebar .panel:not(:first-of-type),
body.widget-mode .controls,
body.widget-mode .daily-memo,
body.widget-mode #backupBtn,
body.widget-mode #restoreBtn,
body.widget-mode #settingsBtn,
body.widget-mode #pomodoroBtn,
body.widget-mode #cleanupBtn,
body.widget-mode #exportCsvBtn,
body.widget-mode #printBtn,
body.widget-mode #exportIcsBtn,
body.widget-mode #importIcsBtn,
body.widget-mode #enableNotificationsBtn,
body.widget-mode .view-switch {
  display: none !important;
}
body.widget-mode .app-shell { grid-template-columns: 260px 1fr; }
body.widget-mode .calendar-view { min-height: 360px; }
body.widget-mode .task-card { font-size: 14px; }

@media (max-width: 1080px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { display: grid; grid-template-columns: repeat(2, 1fr); }
  .brand, .sidebar > .primary-btn { grid-column: 1 / -1; }
}
@media (max-width: 760px) {
  .app-shell { padding: 14px; }
  .controls, .form-grid, .sidebar { grid-template-columns: 1fr; }
  .week-grid, .month-grid { grid-template-columns: 1fr; }
  .toolbar { align-items: stretch; }
  .toolbar-actions, .calendar-nav { flex-wrap: wrap; }
  .calendar-nav h2 { width: 100%; margin: 6px 0 0; }
}

@media print {
  body { background: #fff; }
  .sidebar, .toolbar-actions, .controls, .task-actions, .primary-btn, .ghost-btn { display: none !important; }
  .app-shell { display: block; padding: 0; }
  .panel { box-shadow: none; border: 1px solid #ddd; }
  .calendar-view { min-height: auto; }
}