:root {
  --bg: #000000;
  --paper: #1c1c1e;
  --paper-elevated: #2c2c2e;
  --ink: #f5f5f7;
  --muted: #8e8e93;
  --line: #3a3a3c;
  --accent: #ffd60a;
  --accent-ink: #1c1c1e;
  --danger: #ff453a;
  --shadow: rgba(0, 0, 0, 0.55);
  font-family: "SF Pro Display", "Segoe UI Variable", "Avenir Next", "Trebuchet MS", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--ink);
}

#app {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  max-width: 520px;
  margin: 0 auto;
  background: var(--bg);
}

.hidden { display: none !important; }

.top {
  display: grid;
  grid-template-columns: 44px 1fr 44px;
  align-items: center;
  gap: 8px;
  padding: 14px 16px 10px;
  background: var(--bg);
}

.top-static {
  display: flex;
  justify-content: center;
  grid-template-columns: none;
}

.top h1 {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-align: center;
}

.nav-btn {
  width: 40px;
  height: 40px;
  border: 0;
  border-radius: 50%;
  background: var(--paper-elevated);
  color: var(--accent);
  font-size: 1.45rem;
  line-height: 1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0;
}

.day-title-btn {
  width: 100%;
  border: 0;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 14px;
  color: var(--ink);
  font: inherit;
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  padding: 10px 14px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-width: 0;
}

.day-title-btn[aria-expanded="true"] {
  border-color: rgba(255, 214, 10, 0.45);
  background: rgba(255, 214, 10, 0.1);
}

.day-title-btn #dayTitle {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  min-width: 0;
}

.day-title-chevron {
  color: var(--accent);
  font-size: 0.85rem;
  flex-shrink: 0;
  line-height: 1;
}

.calendar-panel {
  margin: 0 16px 10px;
  padding: 14px 12px 12px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 16px;
}

.cal-nav {
  display: grid;
  grid-template-columns: 40px 1fr 40px;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.cal-nav span {
  font-weight: 700;
  letter-spacing: -0.02em;
  text-align: center;
}

.cal-weekdays {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  margin-bottom: 6px;
  text-align: center;
  color: var(--muted);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.cal-grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
}

.cal-cell {
  position: relative;
  aspect-ratio: 1;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: var(--ink);
  font: inherit;
  font-weight: 600;
  padding: 0;
}

.cal-cell.muted {
  color: var(--muted);
  opacity: 0.45;
}

.cal-cell.today {
  box-shadow: inset 0 0 0 1px var(--line);
}

.cal-cell.selected {
  background: rgba(255, 214, 10, 0.18);
  color: var(--accent);
}

.cal-cell .dots {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 5px;
  display: flex;
  justify-content: center;
  gap: 3px;
}

.cal-cell .dot {
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--muted);
}

.cal-cell .dot.tasks { background: var(--accent); }
.cal-cell .dot.metrics { background: #64d2ff; }

.hint {
  margin: 0 0 10px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.35;
}

.switch-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  margin-bottom: 10px;
}

.settings-row {
  display: grid;
  gap: 8px;
  margin-bottom: 12px;
}

.settings-row label,
.custom-range label {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.9rem;
}

.settings-row input[type="time"],
.settings-select {
  flex: 1;
  width: 100%;
  border: 0;
  background: var(--paper-elevated);
  border-radius: 12px;
  padding: 12px 14px;
  font: inherit;
  color: var(--ink);
  color-scheme: dark;
}

.soon-list {
  display: grid;
  gap: 8px;
}

.soon-item {
  padding: 12px 14px;
  border-radius: 12px;
  background: var(--paper-elevated);
  color: var(--muted);
  border: 1px dashed var(--line);
}

.preset-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
}

.preset-row .preset-actions {
  display: flex;
  gap: 6px;
}

.preset-row button {
  border: 0;
  border-radius: 999px;
  padding: 8px 12px;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 700;
}

.preset-row .use-btn {
  background: var(--accent);
  color: var(--accent-ink);
}

.preset-row .del-btn {
  background: transparent;
  color: var(--muted);
}

.book {
  flex: 1;
  padding: 4px 12px 96px;
  perspective: 1400px;
}

.page {
  background: var(--paper);
  border-radius: 16px;
  min-height: 70dvh;
  padding: 18px 16px 24px;
  box-shadow: 0 8px 28px var(--shadow);
  transform-origin: left center;
  position: relative;
  border: 1px solid var(--line);
}

.page.flipping-next {
  animation: flipNext 520ms ease-in-out;
}

.page.flipping-prev {
  animation: flipPrev 520ms ease-in-out;
}

@keyframes flipNext {
  0% { transform: rotateY(0deg); }
  45% { transform: rotateY(-95deg); box-shadow: -8px 8px 24px var(--shadow); }
  100% { transform: rotateY(0deg); }
}

@keyframes flipPrev {
  0% { transform: rotateY(0deg); }
  45% { transform: rotateY(95deg); box-shadow: 8px 8px 24px var(--shadow); }
  100% { transform: rotateY(0deg); }
}

.block { margin-bottom: 22px; }
.block h2 {
  margin: 0 0 10px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  font-weight: 600;
}

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

.list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.list li .task-title {
  flex: 1;
  min-width: 0;
}

.list li .task-delete {
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 1.35rem;
  line-height: 1;
  padding: 0 4px;
  margin-left: auto;
  flex-shrink: 0;
}

.list li .task-delete:active,
.list li .task-delete:hover {
  color: var(--danger);
}

.list li input[type="checkbox"] {
  appearance: none;
  width: 20px;
  height: 20px;
  margin-top: 1px;
  border: 1.5px solid var(--muted);
  border-radius: 50%;
  background: transparent;
  flex-shrink: 0;
  position: relative;
}

.list li input[type="checkbox"]:checked {
  border-color: var(--accent);
  background: var(--accent);
}

.list li input[type="checkbox"]:checked::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 3px;
  width: 5px;
  height: 9px;
  border: solid var(--accent-ink);
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
}

.list li.done span {
  text-decoration: line-through;
  color: var(--muted);
}

.list li span {
  font-size: 1.05rem;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.row {
  display: flex;
  gap: 8px;
  margin-top: 12px;
}

.row input, .custom-range input {
  flex: 1;
  border: 0;
  background: var(--paper-elevated);
  border-radius: 12px;
  padding: 12px 14px;
  font: inherit;
  color: var(--ink);
  outline: none;
}

.row input::placeholder {
  color: var(--muted);
}

.row input:focus, .custom-range input:focus {
  box-shadow: 0 0 0 1px var(--accent);
}

.row button, .metrics button, .chip.solid {
  border: 0;
  background: var(--accent);
  color: var(--accent-ink);
  border-radius: 12px;
  padding: 12px 14px;
  font: inherit;
  font-weight: 700;
}

.metrics {
  display: grid;
  gap: 4px;
}

.metric {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.metric strong {
  font-weight: 600;
  letter-spacing: -0.01em;
}

.metric .actions { display: flex; gap: 6px; }

.metrics button {
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 0.9rem;
}

.stats {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
  font-size: 0.92rem;
  padding-top: 4px;
}

.period-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.chip {
  border: 1px solid var(--line);
  background: var(--paper-elevated);
  color: var(--ink);
  border-radius: 999px;
  padding: 8px 12px;
  font: inherit;
  font-size: 0.9rem;
}

.chip.active {
  border-color: var(--accent);
  background: rgba(255, 214, 10, 0.12);
  color: var(--accent);
  font-weight: 600;
}

.custom-range {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

.custom-range label {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.9rem;
}

.custom-range input[type="date"] {
  color-scheme: dark;
}

.period-label {
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.report-totals {
  display: grid;
  gap: 0;
}

.report-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.report-row .value {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.tabs {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 4px;
  padding: 10px 12px calc(10px + env(safe-area-inset-bottom));
  background: rgba(0, 0, 0, 0.92);
  border-top: 1px solid var(--line);
  backdrop-filter: blur(16px);
  max-width: 520px;
  margin: 0 auto;
}

.tabs button {
  border: 0;
  background: transparent;
  padding: 10px 6px;
  font: inherit;
  color: var(--muted);
  font-size: 0.85rem;
}

.tabs button.active {
  color: var(--accent);
  font-weight: 700;
}

.empty {
  color: var(--muted);
  font-size: 0.95rem;
  padding: 6px 0;
}

.dash-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.dash-card {
  background: var(--paper-elevated);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 12px;
}

.dash-card-wide {
  width: 100%;
}

.dash-label {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.dash-value {
  font-size: 1.55rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.dash-bar {
  margin-top: 12px;
  height: 8px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  overflow: hidden;
}

.dash-bar span {
  display: block;
  height: 100%;
  width: 0%;
  background: var(--accent);
  border-radius: 999px;
  transition: width 280ms ease;
}

.delta-pos { color: #30d158; }
.delta-neg { color: #ff453a; }
.delta-zero { color: var(--muted); }

.dash-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.dash-tile {
  background: var(--paper-elevated);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px 12px;
}

.dash-tile .label {
  display: block;
  color: var(--muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.dash-tile .num {
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--ink);
}

.dash-tile .num.accent {
  color: var(--accent);
}

.dash-card {
  background: var(--paper-elevated);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 14px;
  line-height: 1.45;
}

.dash-card .big {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}

.dash-card .muted {
  color: var(--muted);
  font-size: 0.92rem;
}

.delta-up { color: #30d158; }
.delta-down { color: #ff453a; }
.delta-flat { color: var(--muted); }

.progress-bar {
  margin-top: 10px;
  height: 8px;
  border-radius: 999px;
  background: #3a3a3c;
  overflow: hidden;
}

.progress-bar > span {
  display: block;
  height: 100%;
  background: var(--accent);
  border-radius: 999px;
}