:root {
  color-scheme: light;
  --paper: #f4f4f0;
  --paper-deep: #e8e8e2;
  --ink: #111111;
  --muted: #5c5c57;
  --line: #111111;
  --red: #e33b2e;
  --red-1: #f7d7d1;
  --red-2: #f1aaa0;
  --red-3: #eb7468;
  --red-4: #e33b2e;
  --focus-ring: #005fcc;
  font-family: Arial, "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-synthesis: none;
}

* {
  box-sizing: border-box;
}

html {
  background: var(--paper);
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-size: 16px;
  line-height: 1.4;
}

button,
select,
input {
  color: inherit;
  font: inherit;
}

button {
  cursor: pointer;
}

button:focus-visible,
select:focus-visible,
input:focus-visible,
a:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 3px;
}

.topbar,
.footer,
.report {
  width: min(1440px, 100%);
  margin-inline: auto;
  padding-inline: clamp(16px, 3vw, 48px);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  min-height: 64px;
  border-bottom: 3px solid var(--line);
}

.brand {
  color: var(--ink);
  font-size: 1.15rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-decoration: none;
}

.demo-badge {
  margin-inline: auto 18px;
  padding: 5px 8px;
  border: 2px solid var(--line);
  background: var(--red);
  color: var(--ink);
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.06em;
}

.topbar-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.status-mark {
  width: 10px;
  height: 10px;
  border: 2px solid var(--ink);
  background: var(--red);
}

.report {
  padding-top: 28px;
  padding-bottom: 56px;
}

.focus-layout {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(240px, 1fr);
  border: 3px solid var(--line);
}

.focus-panel,
.today-panel {
  min-width: 0;
  padding: clamp(22px, 4vw, 52px);
}

.today-panel {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-left: 3px solid var(--line);
  background: var(--red);
  container-type: inline-size;
}

.eyebrow,
.field-label {
  display: block;
  margin: 0;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  line-height: 1.35;
  text-transform: uppercase;
}

.eyebrow {
  margin-bottom: 16px;
}

.focus-name {
  max-width: 12ch;
  margin: 0;
  overflow-wrap: anywhere;
  font-size: clamp(2.4rem, 7vw, 7.2rem);
  font-weight: 900;
  letter-spacing: -0.065em;
  line-height: 0.98;
}

.elapsed-block {
  margin-top: clamp(28px, 5vw, 72px);
}

.elapsed-value,
.today-value,
.time-field time,
.day-detail time,
.day-detail strong {
  font-variant-numeric: tabular-nums;
}

.elapsed-value {
  display: block;
  margin-top: 4px;
  font-family: ui-monospace, SFMono-Regular, Consolas, "Liberation Mono", monospace;
  font-size: clamp(2rem, 6vw, 5.5rem);
  font-weight: 800;
  letter-spacing: -0.06em;
  line-height: 1;
}

.time-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.time-field time {
  display: block;
  margin-top: 5px;
  font-size: clamp(1rem, 2.2vw, 1.4rem);
  font-weight: 800;
  overflow-wrap: anywhere;
}

.phone-age,
.today-note,
.day-detail p {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 0.88rem;
}

#date-picker {
  display: block;
  width: 100%;
  min-height: 44px;
  margin-top: 8px;
  border: 1px solid var(--line);
  background: var(--paper);
  padding: 6px;
}

.today-panel .eyebrow,
.today-panel .today-note {
  color: var(--ink);
}

.today-value {
  display: block;
  margin-block: auto 18px;
  font-family: Arial, "Noto Sans SC", "Microsoft YaHei", sans-serif;
  font-size: clamp(1.7rem, 14cqi, 3.4rem);
  font-weight: 900;
  letter-spacing: -0.08em;
  line-height: 0.95;
  white-space: nowrap;
}

.calendar-section {
  margin-top: 34px;
  padding-top: 24px;
  border-top: 3px solid var(--line);
}

.calendar-heading-row {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
}

.calendar-heading-row h2 {
  margin: 0;
  font-size: clamp(1.65rem, 3vw, 2.8rem);
  letter-spacing: -0.04em;
}

.month-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.square-button,
.month-picker select {
  min-width: 44px;
  min-height: 44px;
  border: 2px solid var(--line);
  border-radius: 0;
  background: var(--paper);
  font-weight: 900;
}

.square-button:hover,
.square-button:active,
.month-picker select:hover {
  background: var(--ink);
  color: var(--paper);
}

.month-picker select {
  min-width: 136px;
  padding: 0 34px 0 12px;
}

.calendar-legend {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px 16px;
  margin-block: 24px 14px;
  font-size: 0.78rem;
}

.legend-title {
  margin-right: 4px;
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: var(--muted);
}

.legend-swatch {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 1px solid var(--line);
}

.level-0 { background: var(--paper); }
.level-1 { background: var(--red-1); }
.level-2 { background: var(--red-2); }
.level-3 { background: var(--red-3); }
.level-4 { background: var(--red-4); }
.unknown { border-style: dashed; background: var(--paper-deep); }

.day-cell[data-level="0"] { background: var(--paper); }
.day-cell[data-level="1"] { background: var(--red-1); }
.day-cell[data-level="2"] { background: var(--red-2); }
.day-cell[data-level="3"] { background: var(--red-3); }
.day-cell[data-level="4"] { background: var(--red-4); }

.annual-calendar {
  display: grid;
  grid-template-rows: repeat(7, 16px);
  grid-auto-flow: column;
  grid-auto-columns: 16px;
  gap: 4px;
  min-height: 136px;
  overflow-x: auto;
  padding: 14px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.annual-calendar .day-cell {
  width: 16px;
  height: 16px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 0;
  font-size: 0;
}

.annual-calendar .day-cell[data-status="unknown"] {
  border-style: dashed;
  background-color: var(--paper-deep);
}

.annual-calendar .day-cell[data-status="unknown"]::after {
  content: "?";
  font-size: 10px;
  line-height: 14px;
}

.annual-calendar .day-cell[data-today="true"],
.month-calendar .day-cell[data-today="true"] {
  outline: 3px solid var(--ink);
  outline-offset: 2px;
}

.month-calendar {
  display: none;
}

.month-weekdays,
.month-days {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 6px;
}

.month-weekdays {
  margin-bottom: 6px;
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-align: center;
  text-transform: uppercase;
}

.month-weekdays span {
  padding-block: 4px;
}

.month-days .day-cell {
  min-width: 44px;
  min-height: 52px;
  border: 2px solid var(--line);
  border-radius: 0;
  background: var(--paper);
  font-weight: 900;
}

.month-days .day-cell[data-status="unknown"] {
  border-style: dashed;
  background: var(--paper-deep);
}

.month-days .day-cell[data-status="unknown"]::after {
  content: "?";
  display: block;
  color: var(--muted);
  font-size: 0.72rem;
}

.month-days .day-cell[data-status="pending"] {
  border-color: var(--red);
}

.month-days .day-cell[data-selected="true"] {
  background: var(--ink);
  color: var(--paper);
}

.day-detail {
  display: grid;
  grid-template-columns: minmax(140px, 1fr) minmax(140px, 1fr) minmax(0, 2fr);
  gap: 18px;
  margin-top: 24px;
  padding: 18px 0 0;
  border-top: 1px solid var(--line);
}

.day-detail time,
.day-detail strong {
  display: block;
  margin-top: 5px;
  font-size: 1.2rem;
  font-weight: 900;
}

.day-detail p {
  align-self: end;
  margin: 0;
}

.footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding-top: 16px;
  padding-bottom: 24px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.07em;
}

noscript {
  display: block;
  padding: 16px;
  border: 3px solid var(--line);
  background: var(--red);
  font-weight: 900;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (max-width: 700px) {
  .topbar {
    min-height: 56px;
  }

  .topbar-meta {
    gap: 8px;
    font-size: 0.68rem;
  }

  .demo-badge {
    margin-inline: auto 8px;
    padding: 4px 6px;
    font-size: 0.58rem;
  }

  .report {
    padding-top: 16px;
    padding-bottom: 36px;
  }

  .focus-layout {
    display: block;
  }

  .focus-panel,
  .today-panel {
    padding: 22px 18px;
  }

  .today-panel {
    min-height: 210px;
    border-top: 3px solid var(--line);
    border-left: 0;
  }

  .focus-name {
    max-width: 100%;
    font-size: clamp(2.45rem, 15vw, 5.5rem);
  }

  .elapsed-block {
    margin-top: 40px;
  }

  .elapsed-value {
    font-size: clamp(2rem, 13vw, 4rem);
  }

  .time-fields {
    gap: 12px;
    margin-top: 24px;
  }

  .time-field time {
    font-size: 0.95rem;
  }

  .calendar-section {
    margin-top: 26px;
    padding-top: 18px;
  }

  .calendar-heading-row {
    align-items: stretch;
    flex-direction: column;
    gap: 14px;
  }

  .month-controls {
    justify-content: space-between;
  }

  .month-picker {
    flex: 1;
  }

  .month-picker select {
    width: 100%;
  }

  .annual-calendar {
    display: none;
  }

  .month-calendar {
    display: block;
    overflow-x: auto;
  }

  .month-weekdays,
  .month-days {
    gap: 3px;
    min-width: 326px;
  }

  .day-detail {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .day-detail p {
    grid-column: 1 / -1;
  }

  .footer {
    flex-direction: column;
    font-size: 0.64rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.001ms !important;
  }
}