:root {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
  color: #303e37;
  background: #f7f8f4;
  font-synthesis: none;
  --green: #54745e;
  --muted: #8a948b;
  --border: #e8ece5;
}
* { box-sizing: border-box; }
body { margin: 0; min-width: 280px; }
button { font: inherit; cursor: pointer; -webkit-tap-highlight-color: transparent; }
button, a { touch-action: manipulation; }
button:focus-visible { outline: 3px solid #91ad83; outline-offset: 3px; }
button:disabled { cursor: default; opacity: .65; }
svg { width: 24px; height: 24px; fill: none; stroke: currentColor; stroke-width: 1.6; stroke-linecap: round; stroke-linejoin: round; }
[hidden] { display: none !important; }
.app { max-width: 552px; margin: 0 auto; padding: 24px 24px 28px; }
.page-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.header-brand { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.brand-mark { width: 36px; height: 36px; display: grid; place-items: center; margin: 0; border-radius: 12px; color: var(--green); background: #e9eee3; transform: rotate(-5deg); }
.brand-mark svg { transform: rotate(5deg); }
h1 { margin: 0; font-size: 24px; font-weight: 600; letter-spacing: 2px; }
.title-dot { color: #88a076; }
.subtitle { margin: 0; color: var(--muted); font-size: 12px; letter-spacing: 1px; }
.calendar-card { padding: 25px 23px 16px; background: #fff; border: 1px solid var(--border); border-radius: 20px; box-shadow: 0 5px 24px #34433204; }
.calendar-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 12px; }
.month-heading h2 { margin: 0; font-size: 20px; font-weight: 600; letter-spacing: .5px; font-variant-numeric: tabular-nums; }
.month-heading p { margin: 5px 0 0; font-size: 9px; letter-spacing: 2px; color: #9ba296; }
.calendar-controls { display: flex; align-items: center; gap: 3px; }
.icon-button { display: grid; place-items: center; width: 36px; height: 44px; padding: 0; border: 0; color: #818b7e; background: transparent; border-radius: 9px; }
.icon-button svg { width: 18px; height: 18px; }
.today-button { height: 36px; padding: 0 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 11px; color: #6b7866; background: #fafbf8; }
.weekdays, .calendar-days { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); }
.weekdays { margin-bottom: 8px; color: #99a092; text-align: center; font-size: 11px; }
.weekdays span { padding: 4px 0; }
.calendar-days { row-gap: 3px; }
.day { position: relative; justify-self: center; width: 44px; max-width: 100%; height: 45px; padding: 0 0 3px; background: none; border: 1px solid transparent; border-radius: 12px; font-size: 13px; font-weight: 450; color: #53604f; font-variant-numeric: tabular-nums; }
.day.outside { color: #c8cdc4; }
.day.today { border-color: #7f9873; color: #4f6d44; font-weight: 650; }
.day.selected { background: #eaf0e3; color: #45633d; font-weight: 650; }
.day.has-records::after { content: ""; position: absolute; bottom: 5px; left: calc(50% - 2px); width: 4px; height: 4px; border-radius: 50%; background: #78936a; }
.calendar-legend { display: flex; align-items: center; gap: 6px; border-top: 1px solid #f0f2ed; padding-top: 10px; margin-top: 12px; font-size: 10px; color: #9aa292; }
.legend-dot { width: 4px; height: 4px; border-radius: 50%; background: #78936a; }
.legend-today { margin-left: auto; font-size: 9px; color: #a8afa2; }
.records-section { margin: 26px 3px 0; }
.records-heading { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.records-heading h2 { font-size: 13px; font-weight: 550; margin: 0; letter-spacing: .4px; }
.record-count { color: #929b8c; font-size: 10px; padding: 4px 8px; border: 1px solid #e5eadd; border-radius: 6px; }
.empty-state { text-align: center; padding: 24px 0 28px; }
.empty-icon { width: 36px; height: 36px; margin: 0 auto 9px; display: grid; place-items: center; border-radius: 50%; color: #a3b099; background: #eef1e9; }
.empty-icon svg { width: 20px; height: 20px; stroke-width: 1.3; }
.empty-state p { margin: 0 0 6px; color: #8d9687; font-size: 12px; }
.empty-state span { color: #adb4a7; font-size: 10px; }
.records-list { list-style: none; margin: 12px 0 23px; padding: 0; display: grid; gap: 8px; }
.records-list:empty { display: none; }
.record { display: flex; align-items: center; gap: 11px; padding: 7px 10px 7px 16px; border: 1px solid var(--border); border-radius: 12px; background: #ffffffa6; }
.record-marker { width: 6px; height: 6px; border-radius: 50%; background: #93a383; }
.record time { font-size: 15px; letter-spacing: 1px; font-variant-numeric: tabular-nums; }
.record-note { font-size: 10px; color: #9aa391; margin-left: auto; }
.delete-button { color: #a4ad9b; }
.delete-button svg { width: 15px; height: 15px; }
.checkin-section { margin-top: 14px; }
.checkin-button { width: 100%; height: 53px; border: 1px solid #54745e; border-radius: 13px; background: var(--green); color: #fff; display: flex; align-items: center; justify-content: center; gap: 9px; font-size: 14px; letter-spacing: 1px; box-shadow: 0 4px 10px #54745e14; transition: background .15s, transform .15s; }
.checkin-button svg { width: 20px; height: 20px; }
.checkin-button:active:not(:disabled) { transform: translateY(1px); }
.checkin-hint { margin: 10px 0 0; font-size: 10px; color: #a0a89a; text-align: center; }
footer { text-align: center; margin-top: 31px; padding-top: 21px; border-top: 1px solid #e6eade; color: #a5ad9d; }
.privacy-label { display: flex; justify-content: center; align-items: center; gap: 5px; font-size: 10px; letter-spacing: .6px; }
.privacy-label svg { width: 12px; height: 12px; }
footer p { font-size: 9px; margin: 8px 0 0; line-height: 1.8; }
.error-banner { background: #fff1e6; color: #985524; border: 1px solid #eddbc9; border-radius: 12px; font-size: 13px; padding: 14px; line-height: 1.7; }
.toast { position: fixed; bottom: max(25px, env(safe-area-inset-bottom)); left: 50%; transform: translate(-50%, 8px); opacity: 0; pointer-events: none; background: #334638; color: white; border-radius: 12px; padding: 12px 22px; font-size: 13px; max-width: calc(100vw - 32px); width: max-content; transition: opacity .18s, transform .18s; box-shadow: 0 5px 25px #24332220; z-index: 5; }
.toast.visible { opacity: 1; transform: translate(-50%, 0); }
dialog { width: min(360px, calc(100% - 40px)); padding: 26px; border: 1px solid var(--border); border-radius: 18px; color: #303e37; background: #fafbf8; box-shadow: 0 15px 60px #263b3020; }
dialog::backdrop { background: #263b3050; backdrop-filter: blur(3px); }
dialog h2 { margin: 0; font-size: 19px; }
dialog p { font-size: 13px; line-height: 1.8; color: #7f8979; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 22px; }
.dialog-actions button { min-height: 42px; padding: 0 14px; border-radius: 9px; font-size: 13px; }
.secondary-button { border: 1px solid #dfe5d8; color: #5c6b51; background: white; }
.danger-button { border: 1px solid #9f6358; color: white; background: #9f6358; }
.noscript { text-align: center; padding: 20px; }
@media (hover: hover) {
  .icon-button:hover, .today-button:hover { background: #edf1e7; }
  .day:hover { background: #f1f4ed; }
  .day.selected:hover { background: #e3ebdb; }
  .checkin-button:hover:not(:disabled) { background: #45664f; }
  .delete-button:hover { color: #a26157; background: #f6eae4; }
}
@media (max-width: 420px) {
  .app { padding: 16px 18px 23px; }
  h1 { font-size: 22px; }
  .subtitle { font-size: 10px; letter-spacing: 0; }
  .calendar-card { padding: 16px 14px 12px; border-radius: 17px; }
  .month-heading h2 { font-size: 18px; }
  .day { height: 43px; border-radius: 10px; }
  .calendar-controls { gap: 0; }
  .icon-button { width: 32px; }
  .records-section { margin-top: 23px; }
}
@media (max-width: 359px) {
  .subtitle { display: none; }
}
/* Keep the primary action in the first screen on short portrait viewports. */
@media (max-height: 650px) and (max-width: 600px) {
  .app { padding-top: 12px; }
  .page-header { margin-bottom: 12px; }
  .calendar-card { padding-top: 12px; padding-bottom: 10px; }
  .calendar-toolbar { margin-bottom: 8px; }
  .weekdays { margin-bottom: 4px; }
  .day { height: 40px; }
  .calendar-legend { padding-top: 8px; margin-top: 8px; }
  .checkin-section { margin-top: 12px; }
}
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; } }

/* The secondary action stays in the history section, away from live check-in. */
.records-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; }
.records-heading { flex-wrap: wrap; }
.backfill-button { min-height: 36px; padding: 0 10px; border: 1px solid #dce5d5; border-radius: 8px; background: #eef3e8; color: #54745e; font-size: 12px; }
.record-note.manual { padding: 3px 6px; border-radius: 5px; background: #edf2e7; color: #62764f; }
.primary-button { border: 1px solid var(--green); background: var(--green); color: white; }
.time-label { display: block; margin: 18px 0 8px; font-size: 13px; }
#backfill-time { display: block; width: 100%; min-width: 0; min-height: 46px; padding: 10px 12px; border: 1px solid #dce5d5; border-radius: 9px; background: white; color: #303e37; font: inherit; font-size: 16px; }
#backfill-time:focus-visible { outline: 2px solid #91ad83; outline-offset: 2px; }
#backfill-time[aria-invalid="true"] { border-color: #9f6358; }
dialog .form-error { color: #9f4939; margin-bottom: 0; }

/* Statistics is a separate view, so the recording screen stays compact. */
.view-toggle { min-height: 36px; min-width: 66px; padding: 0 12px; border: 1px solid #dce5d5; border-radius: 9px; color: var(--green); background: #eef3e8; font-size: 12px; white-space: nowrap; }
.stats-heading { margin: 24px 0 20px; }
.stats-heading h2 { margin: 0; font-size: 23px; font-weight: 600; letter-spacing: 1px; }
.stats-heading p { margin: 7px 0 0; font-size: 12px; color: #7b8773; }
.stats-period-switch { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; padding: 4px; background: #eaf0e4; border-radius: 12px; }
.stats-period-switch button, .stats-chart-tabs button { border: 0; border-radius: 9px; background: none; color: #75816e; font-size: 13px; min-height: 38px; }
.stats-period-switch button[aria-pressed="true"] { color: #45664f; background: white; box-shadow: 0 1px 4px #3443320a; font-weight: 600; }
.stats-navigation { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-top: 20px; }
.stats-navigation .icon-button { flex-shrink: 0; }
.stats-range-heading { min-width: 0; text-align: center; }
.stats-range-heading h3 { margin: 0; font-size: 16px; line-height: 1.5; font-weight: 550; }
.stats-range-heading p { margin: 4px 0 0; font-size: 11px; color: #819075; }
.stats-current-row { text-align: center; }
.stats-current-row .today-button { margin-top: 10px; }
.stats-summary { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 9px; margin: 21px 0 12px; }
.stats-summary > div { border: 1px solid var(--border); border-radius: 13px; padding: 16px 8px; background: white; text-align: center; }
.stats-summary dt { font-size: 11px; color: #75806e; }
.stats-summary dd { display: flex; justify-content: center; align-items: baseline; flex-wrap: wrap; gap: 3px; margin: 9px 0 0; color: #476747; font-size: 26px; font-weight: 550; font-variant-numeric: tabular-nums; overflow-wrap: anywhere; }
.stats-summary small { font-size: 10px; font-weight: 400; color: #84927b; }
.stats-explanation { margin: 8px 0; font-size: 11px; color: #7d8974; line-height: 1.7; }
.stats-chart-card { background: white; border: 1px solid var(--border); border-radius: 17px; margin-top: 20px; padding: 17px; }
.stats-chart-tabs { display: flex; gap: 8px; border-bottom: 1px solid #eef1e9; padding-bottom: 10px; margin-bottom: 19px; }
.stats-chart-tabs button { padding: 0 13px; }
.stats-chart-tabs button[aria-pressed="true"] { background: #eef3e7; color: #466340; font-weight: 550; }
.stats-axis-unit { margin: 0 0 12px; font-size: 11px; color: #84917c; }
.stats-chart { display: grid; grid-template-columns: 31px minmax(0, 1fr); grid-template-rows: 184px 20px; gap: 6px 5px; }
.stats-y-axis { position: relative; font-size: 10px; color: #7c8974; font-variant-numeric: tabular-nums; }
.stats-y-axis span { position: absolute; right: 4px; transform: translateY(50%); }
.stats-plot { min-width: 0; border-bottom: 1px solid #d8e1d0; background: repeating-linear-gradient(to top, transparent 0, transparent calc(25% - 1px), #edf1e8 calc(25% - 1px), #edf1e8 25%); }
.stats-bars { height: 100%; display: grid; grid-template-columns: repeat(var(--columns), minmax(0, 1fr)); align-items: stretch; }
.chart-bar { display: flex; justify-content: center; align-items: flex-end; position: relative; min-width: 0; padding: 0; border: 0; background: transparent; border-radius: 4px 4px 0 0; }
.bar-fill { display: block; width: 65%; max-width: 34px; background: #90a780; border-radius: 4px 4px 0 0; }
.chart-bar.zero .bar-fill { height: 2px !important; background: #cbd5c3; }
.chart-bar.future { background: repeating-linear-gradient(135deg, transparent 0 5px, #e9eee3 5px 7px); opacity: .6; margin: 0 2px; }
.chart-bar[aria-pressed="true"] { background: #edf3e7; }
.chart-bar[aria-pressed="true"] .bar-fill { background: #4f7054; }
.stats-x-labels { grid-column: 2; display: grid; grid-template-columns: repeat(var(--columns), minmax(0, 1fr)); text-align: center; font-size: 10px; color: #6e7b65; font-variant-numeric: tabular-nums; }
.stats-x-labels .future-label { color: #a4ae9b; }
.stats-x-unit { text-align: right; margin: 0; }
.stats-inspect { display: flex; align-items: center; gap: 9px; margin-top: 16px; }
.stats-inspect label { font-size: 11px; color: #77856e; white-space: nowrap; }
.stats-inspect select { min-width: 0; flex: 1; min-height: 38px; padding: 6px; border: 1px solid #e0e7d8; border-radius: 7px; color: #526b48; background: #fafcf8; font: inherit; font-size: 12px; }
.stats-inspect select:focus-visible { outline: 2px solid #91ad83; outline-offset: 2px; }
.stats-chart-detail { font-size: 11px; line-height: 1.8; min-height: 39px; margin: 10px 0 0; color: #667b59; }
.stats-time-description { margin: 0 0 20px; color: #7d8974; font-size: 11px; line-height: 1.8; }
.stats-time-slots { list-style: none; padding: 0; margin: 0 0 8px; display: grid; gap: 25px; }
.time-slot-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 8px; margin-bottom: 9px; font-size: 13px; }
.time-slot-heading small { margin-left: 8px; font-size: 10px; color: #7c8a74; }
.time-slot-heading strong { font-size: 13px; font-weight: 550; white-space: nowrap; color: #526e48; }
.time-track { height: 9px; background: #f0f4eb; border-radius: 5px; overflow: hidden; }
.time-track span { display: block; height: 100%; border-radius: inherit; background: #90a780; }
.stats-empty { text-align: center; padding: 65px 0; }
.stats-empty p { font-size: 14px; color: #6f8064; margin: 0 0 10px; }
.stats-empty span { font-size: 11px; color: #84917c; line-height: 1.8; }
.stats-source-note { text-align: center; }
@media (max-width: 359px) {
  .stats-summary { gap: 6px; }
  .stats-summary dd { font-size: 23px; }
  .stats-chart-card { padding: 13px; }
  .stats-range-heading h3 { font-size: 14px; }
}