:root {
  --bg: #f5f7f8;
  --panel: #ffffff;
  --text: #172026;
  --muted: #61707d;
  --line: #d9e0e5;
  --line-strong: #b8c3cc;
  --accent: #176b57;
  --accent-strong: #0f5644;
  --accent-soft: #e3f2ed;
  --danger: #b84a3c;
  --attention-bg: #fff0ed;
  --attention-bg-strong: #ffdcd6;
  --break-text: #205f91;
  --break-bg: #e2f1fb;
  --field: #ffffff;
  --subtle: #eef2f4;
  --subtle-soft: #f8fafb;
  --shadow: 0 20px 55px rgba(23, 32, 38, 0.1);
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #11171b;
  --panel: #1b242a;
  --text: #edf3f5;
  --muted: #a7b6bf;
  --line: #35434c;
  --line-strong: #51616b;
  --accent: #55bea3;
  --accent-strong: #75d4bc;
  --accent-soft: #203c36;
  --danger: #f08073;
  --attention-bg: #351f1d;
  --attention-bg-strong: #482522;
  --break-text: #8dccf3;
  --break-bg: #1c3546;
  --field: #141c21;
  --subtle: #253139;
  --subtle-soft: #202b31;
  --shadow: 0 20px 55px rgba(0, 0, 0, 0.34);
}

html[data-theme="light"] {
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  html[data-theme="system"] {
    --bg: #11171b;
    --panel: #1b242a;
    --text: #edf3f5;
    --muted: #a7b6bf;
    --line: #35434c;
    --line-strong: #51616b;
    --accent: #55bea3;
    --accent-strong: #75d4bc;
    --accent-soft: #203c36;
    --danger: #f08073;
    --attention-bg: #351f1d;
    --attention-bg-strong: #482522;
    --break-text: #8dccf3;
    --break-bg: #1c3546;
    --field: #141c21;
    --subtle: #253139;
    --subtle-soft: #202b31;
    --shadow: 0 20px 55px rgba(0, 0, 0, 0.34);
  }
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg);
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.85), rgba(245, 247, 248, 0.95)),
    var(--bg);
  font-family:
    Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

html[data-theme="dark"] body {
  background: var(--bg);
}

@media (prefers-color-scheme: dark) {
  html[data-theme="system"] body {
    background: var(--bg);
  }
}

body.is-popup {
  min-width: 0;
  overflow-x: hidden;
  overflow-y: auto;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
  touch-action: manipulation;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

.app {
  position: relative;
  width: min(100%, 430px);
  margin: 0 auto;
  padding: 16px;
}

.toast {
  pointer-events: auto;
  position: fixed;
  z-index: 1000;
  right: 50%;
  bottom: 24px;
  width: max-content;
  max-width: calc(100% - 32px);
  padding: 11px 16px;
  transform: translate(50%, 16px);
  border-radius: 8px;
  color: #fff;
  background: rgba(23, 32, 38, 0.94);
  box-shadow: 0 8px 24px rgba(23, 32, 38, 0.24);
  opacity: 0;
  font-size: 0.9rem;
  font-weight: 700;
  transition: opacity 180ms ease, transform 180ms ease;
}

.toast button {
  margin-left: 12px;
  padding: 3px 7px;
  border: 1px solid rgba(255, 255, 255, 0.65);
  border-radius: 5px;
  color: #fff;
  background: transparent;
  font-weight: 700;
}

.toast button[hidden] {
  display: none;
}

.toast.is-visible {
  transform: translate(50%, 0);
  opacity: 1;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.title-area {
  min-width: 0;
}

h1 {
  overflow: hidden;
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.status-text {
  min-height: 20px;
  margin: 2px 0 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.record-date {
  margin: 3px 0 0;
  font-size: 0.9rem;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

.time-display-area {
  display: grid;
  cursor: pointer;
}

.time-display-area:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: -2px;
}

.secondary-time-display {
  width: max-content;
  max-width: calc(100% - 32px);
  margin: 8px 16px -14px auto;
  overflow: hidden;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.72rem;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  text-align: right;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.icon-button {
  display: inline-grid;
  width: 40px;
  height: 40px;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
  background: var(--panel);
}

.window-actions {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

.header-button {
  min-width: 58px;
  padding: 0 12px;
}

.minimize-button {
  display: none;
}

.compact-start-pause-button {
  display: none;
  min-width: 64px;
  min-height: 40px;
  padding: 0 8px;
  font-size: 0.76rem;
  white-space: nowrap;
}

.timer-workspace-tabs {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 38px;
  align-items: start;
  gap: 6px;
  margin-bottom: 8px;
}

.timer-tab-list {
  display: flex;
  min-width: 0;
  gap: 5px;
  flex-wrap: wrap;
}

.timer-workspace-tab {
  display: flex;
  min-width: min(128px, 100%);
  max-width: 100%;
  flex: 1 1 128px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--subtle);
}

.timer-workspace-tab.is-active {
  border-color: var(--accent);
  background: var(--panel);
}

.timer-workspace-tab.is-running-background {
  border-color: #6957c7;
  animation: background-timer-attention 1.4s ease-in-out infinite;
}

.timer-workspace-tab.is-countdown-overtime {
  border-color: var(--danger);
  animation: countdown-tab-attention 900ms ease-in-out infinite alternate;
}

.timer-workspace-tab.is-countdown-overtime .timer-tab-select,
.timer-workspace-tab.is-countdown-overtime.is-active .timer-tab-select {
  color: var(--danger);
}

.timer-tab-select,
.timer-tab-close,
.add-timer-tab-button {
  min-height: 36px;
  border: 0;
  color: var(--muted);
  background: transparent;
  font-weight: 700;
}

.timer-tab-select {
  min-width: 0;
  padding: 0 10px;
  flex: 1 1 auto;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.timer-workspace-tab.is-active .timer-tab-select {
  color: var(--accent-strong);
}

.timer-tab-close {
  width: 30px;
  padding: 0;
  font-size: 1rem;
}

.timer-tab-close:hover,
.timer-tab-close:focus-visible {
  color: var(--danger);
  background: #f8eae8;
}

.add-timer-tab-button {
  width: 38px;
  flex: 0 0 38px;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--accent);
  background: var(--panel);
  font-size: 1.2rem;
}

.timer-tab-select:hover,
.timer-tab-select:focus-visible,
.add-timer-tab-button:hover,
.add-timer-tab-button:focus-visible {
  background: var(--subtle-soft);
}

.icon-button:hover,
.icon-button:focus-visible,
.secondary-button:hover,
.secondary-button:focus-visible,
.preset-button:hover,
.preset-button:focus-visible {
  border-color: var(--line-strong);
  background: var(--subtle-soft);
}

.timer-panel {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.mode-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 4px;
  padding: 6px;
  border-bottom: 1px solid var(--line);
  background: var(--subtle);
}

.mode-tab {
  min-height: 36px;
  border: 0;
  border-radius: 6px;
  color: var(--muted);
  background: transparent;
  font-size: 0.88rem;
  font-weight: 700;
}

.mode-tab.is-active {
  color: var(--text);
  background: var(--panel);
  box-shadow: 0 1px 4px rgba(23, 32, 38, 0.08);
}

.time-display {
  padding: 24px 16px 0px;
  font-size: clamp(3rem, 16vw, 4.7rem);
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  line-height: 1;
  text-align: center;
  letter-spacing: 0;
}

.time-meta-row {
  display: grid;
  min-height: 24px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: center;
  margin: -9px 0 0px;
  padding: 0 10px;
}

.time-meta-row[hidden] {
  display: none;
}

.cumulative-time-display {
  grid-column: 1 / -1;
  justify-self: center;
  margin: 0;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.82rem;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  text-align: center;
}

.cumulative-time-display:focus-visible {
  border-radius: 3px;
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.cumulative-time-display[hidden] {
  display: none;
}

.pomodoro-phase-display {
  grid-column: 1;
  grid-row: 1;
  justify-self: start;
  width: max-content;
  margin: 0;
  padding: 2px 8px;
  border-radius: 999px;
  color: var(--accent-strong);
  background: var(--accent-soft);
  font-size: 0.78rem;
  font-weight: 800;
}

.pomodoro-phase-display.is-break {
  color: var(--break-text);
  background: var(--break-bg);
}

.time-meta-row .pomodoro-phase-display[hidden] {
  display: block;
  visibility: hidden;
}

.timer-form {
  display: grid;
  gap: 14px;
  padding: 0 16px 16px;
}

.task-field {
  display: grid;
  gap: 6px;
}

.task-field-heading {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.task-field-heading > span {
  flex: none;
}

.secondary-time-display:focus-visible {
  border-radius: 3px;
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.task-field-heading > span,
.time-inputs span,
.countdown-settings legend {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.dialog-field input,
.dialog-field select,
.dialog-field textarea,
.time-inputs input {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--text);
  background: var(--field);
}

.dialog-field textarea {
  min-height: 72px;
  padding: 9px 10px;
  resize: vertical;
}

.task-select-button {
  display: flex;
  min-height: 42px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--text);
  background: var(--field);
  text-align: left;
}

.task-select-button span:last-child {
  color: var(--accent);
  font-size: 0.78rem;
  font-weight: 700;
}

.time-inputs.manual-time-range-inputs {
  width: min(100%, 380px);
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: end;
  justify-self: center;
  margin-inline: auto;
}

.manual-time-range-separator {
  align-self: end;
  padding-bottom: 10px;
  color: var(--muted);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1;
}

.countdown-settings {
  display: grid;
  gap: 10px;
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.countdown-settings[hidden] {
  display: none;
}

.countdown-settings legend {
  padding: 0;
}

.countdown-duration-button {
  display: grid;
  min-height: 42px;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 7px 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--text);
  background: var(--field);
  text-align: left;
}

.countdown-duration-button:hover,
.countdown-duration-button:focus-visible {
  border-color: var(--line-strong);
  background: var(--subtle-soft);
}

.countdown-duration-button > span {
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 700;
}

.countdown-duration-button > span:last-child {
  color: var(--accent);
}

.countdown-duration-button strong {
  font-variant-numeric: tabular-nums;
  text-align: center;
}

.until-time-section {
  display: grid;
  gap: 8px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--subtle-soft);
}

.until-time-section h3 {
  margin: 0;
  font-size: 0.82rem;
}

#until-time-status {
  white-space: pre-wrap;
}

.until-time-controls {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 8px;
}

.until-time-pomodoro-settings {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 8px;
}

.until-time-pomodoro-settings[hidden] {
  display: none;
}

.until-time-pomodoro-settings label {
  display: grid;
  grid-template-columns: auto minmax(52px, 1fr) auto;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.until-time-pomodoro-settings input {
  width: 100%;
  min-width: 0;
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--text);
  background: var(--field);
}

.until-time-controls input {
  min-width: 0;
  padding: 7px 9px;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--text);
  background: var(--field);
  font: inherit;
}

.time-inputs {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.pomodoro-footer {
  display: grid;
  min-height: 42px;
  grid-template-columns: minmax(0, 1fr) max-content;
  align-items: center;
  gap: 8px;
}

.pomodoro-break-settings {
  display: grid;
  transition: opacity 150ms ease;
}

.pomodoro-break-settings:not(.is-active) {
  pointer-events: none;
  visibility: hidden;
  opacity: 0;
}

.pomodoro-break-settings label {
  display: grid;
  grid-template-columns: max-content minmax(44px, 64px) max-content;
  align-items: center;
  gap: 5px;
  white-space: nowrap;
}

.pomodoro-break-settings label span {
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 700;
}

.pomodoro-break-settings input {
  width: 100%;
  min-height: 40px;
  padding: 7px 9px;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--text);
  background: var(--field);
}

.pomodoro-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 5px;
  color: var(--muted);
  cursor: pointer;
  font-size: 0.68rem;
  font-weight: 700;
  white-space: nowrap;
}

.pomodoro-toggle input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.pomodoro-toggle-track {
  position: relative;
  display: inline-block;
  width: 34px;
  height: 20px;
  border: 1px solid var(--line-strong);
  border-radius: 999px;
  background: var(--subtle);
  transition: border-color 150ms ease, background-color 150ms ease;
}

.pomodoro-toggle-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--muted);
  transition: transform 150ms ease, background-color 150ms ease;
}

.pomodoro-toggle input:checked + .pomodoro-toggle-track {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.pomodoro-toggle input:checked + .pomodoro-toggle-track .pomodoro-toggle-thumb {
  transform: translateX(14px);
  background: var(--accent);
}

.pomodoro-toggle input:focus-visible + .pomodoro-toggle-track {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.time-inputs label {
  display: grid;
  gap: 5px;
}

.time-inputs input {
  min-height: 42px;
  padding: 6px 8px;
  text-align: center;
  font-size: 1rem;
  font-weight: 700;
}

.preset-row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 6px;
}

.preset-button,
.secondary-button,
.primary-button {
  min-height: 40px;
  border-radius: 7px;
  font-weight: 700;
}

.preset-button,
.secondary-button {
  border: 1px solid var(--line);
  color: var(--text);
  background: var(--panel);
}

.control-row {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr 1.5fr;
  gap: 8px;
  padding: 14px 16px 16px;
  border-top: 1px solid var(--line);
  background: var(--subtle-soft);
}

#start-pause-button,
#next-task-button {
  min-width: 0;
  overflow-wrap: normal;
  line-height: 1.15;
  word-break: keep-all;
}

#start-pause-button {
  white-space: pre;
}

#next-task-button {
  white-space: nowrap;
}

.modal {
  width: min(calc(100% - 24px), 410px);
  max-height: calc(100vh - 32px);
  padding: 0;
  border: 0;
  border-radius: 10px;
  overflow: hidden;
  color: var(--text);
  background: transparent;
  box-shadow: var(--shadow);
}

#history-dialog {
  width: min(calc(100% - 24px), 720px);
  min-width: min(320px, calc(100% - 24px));
  min-height: min(360px, calc(100vh - 32px));
  max-width: calc(100vw - 24px);
  overflow: hidden;
  resize: both;
}

#task-memo-dialog,
#work-summary-dialog {
  width: min(calc(100% - 24px), 620px);
  max-width: calc(100vw - 24px);
}

#history-dialog .history-card {
  height: 100%;
  box-sizing: border-box;
}

.modal::backdrop {
  background: rgba(23, 32, 38, 0.48);
}

.modal-card {
  display: grid;
  gap: 18px;
  max-height: inherit;
  margin: 0;
  overflow-y: auto;
  padding: 20px;
  background: var(--panel);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.countdown-dialog-header-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.countdown-dialog-pomodoro-toggle {
  flex: none;
}

.modal h2,
.modal h3 {
  margin: 0;
}

.modal h2 {
  font-size: 1.1rem;
}

.modal h3,
.dialog-field span {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.dialog-field {
  display: grid;
  gap: 6px;
}

.dialog-field input,
.dialog-field select {
  min-height: 42px;
  padding: 8px 10px;
}

.dialog-field input[readonly] {
  color: var(--muted);
  background: var(--subtle);
  cursor: not-allowed;
}

.modal-submit {
  min-height: 42px;
}

.settings-card {
  gap: 16px;
}

.settings-section {
  display: grid;
  gap: 10px;
}

.settings-section + .settings-section {
  padding-top: 16px;
  border-top: 1px solid var(--line);
}

.settings-description {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.55;
}

.finish-sound-volume-setting {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 84px auto;
  align-items: center;
  gap: 10px;
}

.finish-sound-volume-setting input {
  width: 100%;
  accent-color: var(--accent);
}

.finish-sound-volume-number {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 4px;
}

.finish-sound-volume-number input {
  width: 100%;
  min-width: 0;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--text);
  background: var(--field);
  font: inherit;
  font-variant-numeric: tabular-nums;
  text-align: right;
}

.finish-sound-volume-number span {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.finish-sound-volume-setting button {
  min-height: 34px;
  padding: 5px 12px;
}

.settings-check-field {
  display: flex;
  align-items: flex-start;
  gap: 9px;
  font-size: 0.9rem;
  font-weight: 700;
}

.settings-check-field input {
  width: 18px;
  height: 18px;
  flex: 0 0 auto;
}

.settings-check-description {
  padding-left: 27px;
}

.settings-reset-button {
  min-height: 34px;
  padding: 0 14px;
  white-space: nowrap;
}

.settings-backup-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.confirm-actions.backup-import-mode-actions {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

#backup-import-summary {
  white-space: pre-line;
}

.settings-backup-actions button {
  min-height: 42px;
}

.settings-backup-status {
  min-height: 1.4em;
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.settings-backup-status.is-error {
  color: var(--danger);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.settings-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 7px;
}

.settings-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.82rem;
}

.settings-table th,
.settings-table td {
  padding: 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
}

.settings-table thead th {
  color: var(--muted);
  background: var(--subtle);
  font-size: 0.76rem;
}

.settings-table tbody tr:last-child > * {
  border-bottom: 0;
}

.settings-table tbody th {
  white-space: nowrap;
}

@media (max-width: 360px) {
  .settings-backup-actions {
    grid-template-columns: 1fr;
  }

  .confirm-actions.backup-import-mode-actions {
    grid-template-columns: 1fr;
  }
}

.shortcut-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 7px;
}

.shortcut-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}

.shortcut-table th,
.shortcut-table td {
  padding: 9px 10px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
}

.shortcut-table tr:last-child > * {
  border-bottom: 0;
}

.shortcut-table th {
  white-space: nowrap;
}

kbd {
  display: inline-block;
  min-width: 22px;
  padding: 2px 5px;
  border: 1px solid var(--line-strong);
  border-bottom-width: 2px;
  border-radius: 4px;
  color: var(--text);
  background: var(--field);
  font: 0.72rem ui-monospace, SFMono-Regular, Consolas, monospace;
  text-align: center;
}

.recent-task-list {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  max-height: 150px;
  margin-top: 9px;
  overflow-y: auto;
}

.recent-task-button {
  padding: 7px 9px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text);
  background: var(--field);
  font-size: 0.84rem;
}

.empty-message {
  margin: 0;
  padding: 22px 10px;
  color: var(--muted);
  text-align: center;
}

.history-filters {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: 12px;
}

.history-date-fields {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}

.history-date-fields.is-calendar-enabled {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.history-date-fields > [hidden] {
  display: none;
}

.unit-toggle {
  display: flex;
  min-height: 42px;
  padding: 3px;
  border-radius: 7px;
  background: var(--subtle);
}

.unit-button,
.work-summary-unit-button {
  padding: 0 10px;
  border: 0;
  border-radius: 5px;
  color: var(--muted);
  background: transparent;
  font-size: 0.8rem;
  font-weight: 700;
}

.unit-button.is-active,
.work-summary-unit-button.is-active {
  color: var(--text);
  background: var(--field);
}

.history-list {
  min-height: 100px;
  overflow: visible;
  border-top: 1px solid var(--line);
}

.history-item.is-read-only {
  opacity: 0.9;
}

#edit-history-dialog.is-read-only input,
#edit-history-dialog.is-read-only textarea {
  cursor: text;
  color: var(--text);
  background: var(--subtle-soft);
}

#edit-history-dialog.is-read-only .form-error {
  color: var(--muted);
}

#edit-history-dialog.is-read-only .edit-history-actions {
  display: none;
}

.history-summary {
  display: grid;
  min-width: 0;
  max-width: 100%;
  gap: 6px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--subtle-soft);
  cursor: pointer;
  transition: border-color 150ms ease, box-shadow 150ms ease, transform 150ms ease;
}

.history-summary:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 14px rgba(23, 107, 87, 0.12);
}

.history-summary:focus-visible {
  border-color: var(--accent);
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.history-summary:active {
  transform: translateY(1px);
}

.history-summary[hidden] {
  display: none;
}

.history-summary h3 {
  margin: 0 0 2px;
  font-size: 0.82rem;
}

.history-summary-header {
  display: flex;
  min-width: 0;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.history-summary-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
}

.history-summary-stats div {
  display: flex;
  min-width: 0;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  padding: 8px 10px;
  border-top: 1px solid var(--line);
}

.history-summary-stats dt {
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 700;
}

.history-summary-stats dd {
  margin: 0;
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  white-space: nowrap;
}

@media (max-width: 480px) {
  .history-summary-stats div {
    display: grid;
    align-content: center;
    gap: 3px;
  }

  .history-summary-stats dd {
    text-align: right;
  }
}

.work-summary-open-button {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  gap: 6px;
  padding: 5px 9px;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--accent-strong);
  background: var(--panel);
  font-size: 0.75rem;
  font-weight: 700;
  pointer-events: none;
}

.work-summary-open-button svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

.history-summary-table {
  width: 100%;
  max-width: 100%;
  table-layout: fixed;
  border-collapse: collapse;
  font-size: 0.8rem;
}

.history-summary-table th,
.history-summary-table td {
  padding: 8px 7px;
  border-top: 1px solid var(--line);
  text-align: left;
}

.history-summary-table th:nth-child(n + 2),
.history-summary-table td:nth-child(n + 2) {
  text-align: right;
  white-space: nowrap;
}

.history-summary-table th:first-child,
.history-summary-table td:first-child {
  width: 58%;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.history-summary-table th:nth-child(2),
.history-summary-table td:nth-child(2) {
  width: 16%;
}

.history-summary-table th:nth-child(3),
.history-summary-table td:nth-child(3) {
  width: 26%;
}

.history-summary-table tbody tr {
  cursor: pointer;
  border-radius: 5px;
}

.history-summary-table tbody tr:hover,
.history-summary-table tbody tr:focus-visible {
  outline: none;
  background: color-mix(in srgb, var(--accent) 10%, transparent);
}

.task-memo-card,
.work-summary-card {
  width: 100%;
  min-width: 0;
  max-width: 100%;
  overflow-x: hidden;
}

.task-memo-card .modal-header > div,
.work-summary-card .modal-header > div,
#work-summary-task-table {
  min-width: 0;
  max-width: 100%;
}

.task-memo-card .modal-header h2,
.work-summary-card .modal-header h2 {
  overflow-wrap: anywhere;
}

.task-memo-card .modal-header > div:first-child {
  flex: 1 1 auto;
}

.task-memo-header-actions {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 8px;
}

.task-memo-summary {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  color: var(--muted);
  font-size: 1.1rem;
  font-weight: 700;
  line-height: 1.2;
  white-space: nowrap;
}

#task-memo-total {
  padding: 4px 8px;
  border: 1px solid var(--line);
  border-radius: 6px;
  color: var(--accent-strong);
  background: var(--subtle-soft);
  font: inherit;
  font-weight: 800;
  cursor: pointer;
}

#task-memo-total:hover,
#task-memo-total:focus-visible {
  border-color: var(--accent);
  outline: none;
  background: color-mix(in srgb, var(--accent) 10%, var(--subtle-soft));
}

@media (max-width: 480px) {
  .task-memo-card .modal-header {
    align-items: flex-start;
    gap: 6px;
  }

  .task-memo-card .history-help {
    display: none;
  }

  .task-memo-header-actions {
    gap: 5px;
  }

  #task-memo-total {
    padding-inline: 6px;
  }
}

.task-memo-list {
  display: grid;
  gap: 8px;
  max-height: min(62vh, 520px);
  overflow: auto;
}

.task-memo-item {
  min-width: 0;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--subtle-soft);
}

.task-memo-item strong {
  display: block;
  font-size: 0.78rem;
  overflow-wrap: anywhere;
}

.task-memo-item p {
  margin: 6px 0 0;
  overflow-wrap: anywhere;
  word-break: break-word;
  white-space: pre-wrap;
}

.task-memo-item p.is-empty {
  color: var(--muted);
  font-style: italic;
}

.work-summary-card {
  gap: 10px;
}

.work-summary-header > div:first-child {
  min-width: 0;
  flex: 1 1 auto;
}

.work-summary-unit-toggle {
  min-height: 36px;
  flex: 0 1 auto;
  margin-left: auto;
}

.work-summary-unit-button {
  min-width: 0;
  padding-inline: 7px;
  font-size: 0.7rem;
  white-space: nowrap;
}

.work-summary-input-grid {
  display: grid;
  min-width: 0;
  grid-template-columns: minmax(0, 1.45fr) minmax(180px, 0.85fr);
  align-items: start;
  gap: 8px;
}

.work-summary-input-grid fieldset {
  height: 100%;
  gap: 6px;
  padding: 6px 9px 9px;
}

.work-summary-input-grid legend {
  padding-inline: 4px;
  font-size: 0.72rem;
}

.work-summary-input-grid .time-inputs input {
  min-height: 34px;
  padding: 4px 6px;
  font-size: 0.9rem;
}

.work-summary-input-grid .time-inputs span {
  font-size: 0.7rem;
}

.work-summary-input-grid .manual-time-range-separator {
  padding-bottom: 8px;
}

.work-summary-input-grid .manual-time-range-inputs,
.work-summary-input-grid .work-break-inputs {
  width: 100%;
}

.work-time-settings .time-inputs label,
.work-time-settings .time-inputs input,
.work-break-settings .time-inputs label,
.work-break-settings .time-inputs input {
  min-width: 0;
}

.work-break-inputs {
  width: min(100%, 260px);
  grid-template-columns: minmax(0, 1fr);
  justify-self: center;
  margin-inline: auto;
}

.work-summary-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
}

.work-summary-metrics div {
  padding: 12px 8px;
  border: 1px solid var(--line);
  border-radius: 7px;
  text-align: center;
  background: var(--subtle-soft);
}

.work-summary-metrics dt {
  color: var(--muted);
  font-size: 0.75rem;
  font-weight: 700;
}

.work-summary-metrics dd {
  margin: 5px 0 0;
  font-variant-numeric: tabular-nums;
  font-weight: 800;
}

.work-summary-metrics dd.is-negative {
  color: var(--danger);
}

.work-summary-metrics dd.is-positive {
  color: var(--break-text);
}

.work-summary-card .daily-memo-status.is-error {
  color: var(--danger);
  font-weight: 700;
}

.work-summary-subtitle {
  margin: 0 0 7px;
  font-size: 0.88rem;
}

@media (max-width: 620px) {
  .work-summary-metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .work-summary-header {
    gap: 6px;
  }

  .work-summary-header > div:first-child .history-help {
    display: none;
  }

  .work-summary-unit-button {
    padding-inline: 5px;
    font-size: 0.65rem;
  }

  .work-summary-input-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 380px) {
  .work-summary-card {
    padding: 14px;
  }

  .work-summary-metrics {
    grid-template-columns: 1fr;
  }
}

.daily-memo-section {
  display: grid;
  gap: 5px;
}

.daily-memo-status {
  min-height: 1.4em;
  margin: 0;
  color: var(--muted);
  font-size: 0.76rem;
}

.export-option-group {
  display: grid;
  gap: 9px;
  margin: 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 7px;
}

.export-option-group.is-disabled {
  color: var(--muted);
  border-color: #d8dde0;
  background: var(--subtle);
}

.export-option-group.is-disabled label {
  cursor: not-allowed;
  opacity: 0.65;
}

.export-option-group legend {
  padding: 0 5px;
  font-size: 0.82rem;
  font-weight: 700;
}

.export-option-group label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
}

.export-option-group input {
  width: 17px;
  height: 17px;
}

.history-date-context {
  margin: 0;
  padding: 8px 10px;
  border: 1px solid var(--line-strong);
  border-radius: 7px;
  color: #fff;
  background: #52616b;
  font-size: 0.8rem;
  font-weight: 700;
  text-align: center;
}

.history-date-context[hidden],
.resume-history-button[hidden],
#add-history-button[hidden] {
  display: none;
}

.history-card {
  transition: background-color 160ms ease;
}

#history-dialog.is-viewing-past .history-card {
  border: 1px solid var(--line-strong);
  background: var(--subtle);
}

#history-dialog.is-viewing-past .history-list,
#history-dialog.is-viewing-past .history-summary,
#history-dialog.is-viewing-past .daily-memo-section textarea {
  border-color: var(--line-strong);
  background: var(--field);
}

#history-dialog.is-viewing-past .history-item {
  color: var(--text);
  border-bottom-color: var(--line-strong);
}

#history-dialog.is-viewing-past .history-item-meta {
  color: var(--muted);
}

#history-dialog.is-viewing-past:not(.is-editing-past) .history-actions {
  grid-template-columns: 1fr;
}

.history-title {
  display: grid;
  gap: 3px;
}

.history-help {
  margin: 0;
  color: var(--muted);
  font-size: 0.75rem;
}

.history-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.history-time-help {
  margin: -2px 0 0;
  color: var(--muted);
  font-size: 0.7rem;
  line-height: 1.45;
  text-align: center;
}

.edit-history-actions {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 8px;
}

.resume-history-button {
  width: 100%;
}

.confirm-overlay {
  position: fixed;
  z-index: 20;
  inset: 0;
  display: grid;
  place-items: center;
  padding: 16px;
  background: rgba(23, 32, 38, 0.48);
}

.confirm-overlay[hidden] {
  display: none;
}

.confirm-card {
  display: grid;
  width: min(100%, 330px);
  gap: 14px;
  padding: 18px;
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.confirm-card h2 {
  margin: 0;
  font-size: 1rem;
}

.confirm-message {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.5;
}

.confirm-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.duration-conflict-actions {
  display: grid;
  gap: 8px;
}

.form-error {
  min-height: 20px;
  margin: -8px 0 0;
  color: var(--danger);
  font-size: 0.82rem;
}

.history-item {
  display: flex;
  width: 100%;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 2px;
  border: 0;
  border-bottom: 1px solid var(--line);
  color: var(--text);
  background: transparent;
  text-align: left;
}

.history-item:hover,
.history-item:focus-visible {
  padding-right: 8px;
  padding-left: 8px;
  background: var(--subtle-soft);
}

.history-item span:last-child {
  flex: 0 0 auto;
  font-variant-numeric: tabular-nums;
  font-weight: 700;
}

.history-item-details {
  display: grid;
  min-width: 0;
  gap: 3px;
}

.history-item-meta {
  overflow-wrap: anywhere;
  color: var(--muted);
  font-size: 0.7rem;
  font-weight: 400;
}

.primary-button {
  border: 1px solid var(--accent);
  color: #fff;
  background: var(--accent);
}

.primary-button:hover,
.primary-button:focus-visible {
  border-color: var(--accent-strong);
  background: var(--accent-strong);
}

.danger-button {
  min-height: 40px;
  border: 1px solid var(--danger);
  border-radius: 7px;
  color: #fff;
  background: var(--danger);
  font-weight: 700;
}

.danger-button:hover,
.danger-button:focus-visible {
  border-color: #973629;
  background: #973629;
}

.is-measurement-finished {
  color: var(--danger);
}

.finish-flash {
  pointer-events: none;
  position: absolute;
  inset: 0;
  opacity: 0;
  background: rgba(184, 74, 60, 0.1);
}

.is-finished .finish-flash {
  animation: flash 1.1s ease-out 3;
}

.is-awaiting-stop {
  border-color: var(--danger);
  animation: countdown-border-attention 900ms ease-in-out infinite alternate;
}

.is-measurement-awaiting-stop {
  color: var(--danger);
  animation: countdown-text-attention 900ms ease-in-out infinite alternate;
}

#time-display.is-measurement-awaiting-stop {
  width: 100%;
  font-size: clamp(2.65rem, 14vw, 4.15rem);
  text-align: center;
}

.is-awaiting-stop .finish-flash {
  animation: countdown-flash-attention 900ms ease-in-out infinite alternate;
}

.is-awaiting-stop.is-overtime-background {
  animation:
    countdown-border-attention 900ms ease-in-out infinite alternate,
    countdown-background-attention 900ms ease-in-out infinite alternate;
}

.is-popup .app {
  width: 100%;
  margin: 0;
  padding: 10px;
}

.is-popup .timer-panel {
  box-shadow: none;
}

.is-popup .time-display {
  padding-top: 18px;
  font-size: 4.1rem;
}

.is-popup #time-display.is-measurement-awaiting-stop {
  font-size: 3.6rem;
}

.is-popup .app-header {
  margin-bottom: 8px;
}

.is-popup #popup-button {
  display: none;
}

.is-popup .minimize-button {
  display: inline-grid;
}

.is-minimized {
  min-width: 320px;
  min-height: 190px;
}

.is-popup.is-minimized {
  min-width: 0;
  min-height: 0;
}

.is-popup.is-minimized .app {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 5px 6px;
}

.is-popup.is-minimized.is-minimized-countdown-overtime .app {
  animation: countdown-minimized-attention 900ms ease-in-out infinite alternate;
}

.is-popup.is-minimized .timer-panel {
  border-color: transparent;
  background: transparent;
}

.is-popup.is-minimized .app-header {
  margin-bottom: 0;
}

.is-popup.is-minimized .mode-tabs,
.is-popup.is-minimized .timer-workspace-tabs,
.is-popup.is-minimized .timer-form,
.is-popup.is-minimized .control-row,
.is-popup.is-minimized #history-button,
.is-popup.is-minimized #settings-button {
  display: none;
}

.is-popup.is-minimized .time-display {
  position: relative;
  z-index: 2;
  pointer-events: auto;
  padding: 3px 5px 0;
  font-size: 3rem;
}

.is-popup.is-minimized #time-display.is-measurement-awaiting-stop {
  font-size: 2.6rem;
}

.is-popup.is-minimized .time-display-area {
  position: relative;
  z-index: 1;
  pointer-events: auto;
  padding-bottom: 8px;
}

.is-popup.is-minimized .cumulative-time-display {
  position: relative;
  z-index: 3;
  pointer-events: auto;
  line-height: 1;
  font-size: 0.74rem;
}

.is-popup.is-minimized .time-meta-row {
  min-height: 14px;
  margin: -22px 0 0;
  padding: 0 2px;
}

.is-popup.is-minimized .pomodoro-phase-display {
  padding: 1px 5px;
  font-size: 0.64rem;
}

.is-popup.is-minimized .record-date {
  font-size: 0.72rem;
  white-space: nowrap;
}

.is-popup.is-minimized .secondary-time-display {
  max-width: 100%;
  margin: 1px 4px -1px auto;
  font-size: 0.68rem;
  text-align: right;
}

.is-popup.is-minimized .compact-start-pause-button {
  display: inline-grid;
  place-items: center;
}

@keyframes flash {
  0% {
    opacity: 1;
  }

  100% {
    opacity: 0;
  }
}

@keyframes background-timer-attention {
  0%, 100% {
    background: color-mix(in srgb, #6957c7 12%, var(--panel));
    box-shadow: 0 0 0 0 rgba(105, 87, 199, 0.18);
  }
  50% {
    background: color-mix(in srgb, #6957c7 30%, var(--panel));
    box-shadow: 0 0 0 3px rgba(105, 87, 199, 0.16);
  }
}

@keyframes countdown-border-attention {
  from {
    box-shadow: 0 0 0 0 rgba(184, 74, 60, 0.12);
  }

  to {
    box-shadow: 0 0 0 4px rgba(184, 74, 60, 0.42);
  }
}

@keyframes countdown-text-attention {
  from {
    opacity: 0.55;
  }

  to {
    opacity: 1;
  }
}

@keyframes countdown-tab-attention {
  from {
    background: color-mix(in srgb, var(--danger) 8%, var(--panel));
    box-shadow: 0 0 0 0 rgba(184, 74, 60, 0.12);
  }

  to {
    background: color-mix(in srgb, var(--danger) 22%, var(--panel));
    box-shadow: 0 0 0 3px rgba(184, 74, 60, 0.36);
  }
}

@keyframes countdown-flash-attention {
  from {
    opacity: 0.04;
  }

  to {
    opacity: 0.22;
  }
}

@keyframes countdown-background-attention {
  from {
    background-color: var(--attention-bg);
  }

  to {
    background-color: var(--attention-bg-strong);
  }
}

@keyframes countdown-minimized-attention {
  from {
    background-color: var(--attention-bg);
    box-shadow: inset 0 0 0 1px rgba(184, 74, 60, 0.3);
  }

  to {
    background-color: var(--attention-bg-strong);
    box-shadow: inset 0 0 18px 3px rgba(184, 74, 60, 0.48);
  }
}

@media (prefers-reduced-motion: reduce) {
  .is-awaiting-stop,
  .is-measurement-awaiting-stop,
  .timer-workspace-tab.is-countdown-overtime,
  .is-popup.is-minimized.is-minimized-countdown-overtime .app,
  .is-awaiting-stop .finish-flash {
    animation: none;
  }

  .is-awaiting-stop .finish-flash {
    opacity: 0.14;
  }

  .is-awaiting-stop.is-overtime-background {
    background: var(--attention-bg);
  }

  .is-popup.is-minimized.is-minimized-countdown-overtime .app {
    background: var(--attention-bg);
  }
}

@media (max-width: 360px) {
  .app {
    padding: 10px;
  }

  .timer-form,
  .control-row {
    padding-right: 12px;
    padding-left: 12px;
  }

  .control-row {
    grid-template-columns: 1fr;
  }

  .history-filters {
    grid-template-columns: 1fr;
  }

  .history-date-fields.is-calendar-enabled {
    grid-template-columns: 1fr;
  }

  .history-actions {
    grid-template-columns: 1fr;
  }

  .daily-memo-section {
    grid-template-columns: 1fr;
  }

  .preset-row {
    grid-template-columns: repeat(2, 1fr);
  }
}


/* 履歴から計測を再開しているタイマーと履歴を識別する */
.timer-panel.is-history-resumed {
  border: 2px solid var(--break-text);
  box-shadow: 0 0 0 3px var(--break-bg), var(--shadow);
}

.history-resume-indicator {
  padding: 7px 12px;
  color: var(--break-text);
  background: var(--break-bg);
  font-size: 0.76rem;
  font-weight: 800;
  text-align: center;
}

.timer-workspace-tab.is-history-resumed {
  border-color: var(--break-text);
  box-shadow: inset 0 0 0 1px var(--break-text);
}

.history-item.is-resuming {
  margin: 5px 0;
  padding: 10px 8px;
  border: 2px solid var(--break-text);
  border-radius: 7px;
  background: var(--break-bg);
}

.history-item.is-resuming:hover,
.history-item.is-resuming:focus-visible {
  padding: 10px 8px;
  background: var(--break-bg);
}

.history-resuming-label {
  color: var(--break-text);
  font-size: 0.7rem;
  font-weight: 800;
}