:root {
  --bg: #F8FCFD;
  --panel: #ffffff;
  --panel-soft: #f7fbfb;
  --line: #dde8e9;
  --text: #1E2D3C;
  --muted: #65736b;
  --accent: #5DB7C0;
  --button: #3f9faa;
  --button-hover: #358a94;
  --accent-soft: #5DB7C0;
  --accent-2: #5DB7C0;
  --selection: #eef9fb;
  --selection-strong: #4faeb8;
  --danger: #a4433e;
  --shadow: 0 18px 50px rgba(39, 64, 68, 0.08);
  --schedule-title-size: 32px;
  --schedule-subtitle-size: 13px;
  --schedule-tab-font-size: 14px;
  --schedule-action-height: 34px;
  --schedule-action-font-size: 14px;
  --schedule-header-gap: 8px;
  --week-hour-height: 64px;
  --week-half-hour-height: calc(var(--week-hour-height) / 2);
  --hour-height: 64px;
  --calendar-cell-inner-offset: 3px;
  --background-event-yellow: #FFFBE8;
  --background-event-red: #FDF0F0;
  --background-event-blue: #EEF8FF;
  --background-event-green: #F2FBF2;
  --background-event-purple: #F7F2FD;
  --background-event-gray: #F6F7F8;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Sans", "Yu Gothic", "YuGothic", "Meiryo", sans-serif;
}

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

input,
select,
textarea {
  font-weight: 500;
}

input::placeholder,
textarea::placeholder {
  font-weight: 400;
  color: color-mix(in srgb, var(--muted) 78%, white);
}

button {
  cursor: pointer;
}

body.is-touch-dragging {
  overflow: hidden;
  touch-action: none;
  user-select: none;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible,
summary:focus-visible {
  outline: 3px solid color-mix(in srgb, var(--accent) 48%, white);
  outline-offset: 2px;
}

.app-shell {
  width: min(1440px, calc(100% - 28px));
  margin: 0 auto;
  padding: 22px 0 44px;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 22px;
  margin-bottom: 12px;
}

.brand-block {
  min-width: 0;
}

.brand-block h1 {
  line-height: 1.08;
}

.eyebrow {
  margin: 0 0 4px;
  color: var(--muted);
  font-size: 13px;
}

h1,
h2,
p {
  margin-top: 0;
}

h1 {
  margin-bottom: 0;
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  letter-spacing: 0;
}

h2 {
  margin-bottom: 0;
  font-size: 22px;
  font-weight: 600;
}

.header-actions,
.modal-actions > div,
.view-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
}

#addTaskButton,
#displayButton,
#printMonthButton {
  display: none;
}

body[data-active-tab="month"] #printMonthButton,
body[data-active-tab="week"] #displayButton {
  display: inline-flex;
}

body[data-active-tab="homework"] #addEventButton {
  display: none;
}

.view-toolbar {
  justify-content: center;
  margin: 16px 0;
}

.homework-toolbar {
  justify-content: space-between;
}

.planner-strip {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: start;
  gap: 18px;
  margin-bottom: 18px;
}

.period-controls {
  display: flex;
  align-items: start;
  justify-content: flex-end;
  gap: 14px;
  min-width: 0;
}

.period-controls .view-toolbar {
  margin: 0;
}

.month-control,
.week-control,
.homework-control {
  display: none;
}

body[data-active-tab="month"] .month-control,
body[data-active-tab="week"] .week-control,
body[data-active-tab="homework"] .homework-control {
  display: flex;
}

body[data-active-tab="month"] details.month-control,
body[data-active-tab="week"] details.week-control {
  display: block;
}

.period-toolbar {
  margin: 0;
}

.period-toolbar h2,
.homework-toolbar h2 {
  font-size: 18px;
  line-height: 1.2;
}

.tabs {
  display: flex;
  align-self: start;
  gap: 6px;
  width: fit-content;
  padding: 5px;
  border: 0;
  border-radius: 999px;
  background: #fff;
  box-shadow: inset 0 0 0 1px rgba(117, 137, 141, 0.12);
}

.tab,
.primary-button,
.secondary-button,
.icon-text-button,
.danger-button,
.square-button {
  min-height: 40px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: #fff;
  color: var(--text);
}

.tab {
  min-width: 78px;
  padding: 0 16px;
}

.tab.is-active {
  background: var(--selection-strong);
  color: #fff;
  border-color: var(--selection-strong);
}

.primary-button,
.icon-text-button {
  padding: 0 15px;
  background: var(--button);
  color: #fff;
  border-color: var(--button);
  font-weight: 600;
}

.tab.is-active:hover,
.primary-button:hover,
.icon-text-button:hover {
  background: var(--button-hover);
  border-color: var(--button-hover);
}

.secondary-button {
  padding: 0 13px;
  background: rgba(255, 255, 255, 0.76);
  border-color: rgba(117, 137, 141, 0.16);
  font-weight: 500;
}

.secondary-button:hover,
.square-button:hover {
  background: var(--selection);
  border-color: color-mix(in srgb, var(--accent-soft) 45%, var(--line));
}

.secondary-button.is-active {
  background: var(--selection);
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  color: var(--button);
}

.danger-button {
  padding: 0 13px;
  color: #fff;
  background: var(--danger);
  border-color: var(--danger);
  font-weight: 500;
}

.modal-action-button,
#detailEditButton,
#detailDeleteButton,
#detailCopyButton,
#copyCategoryButton,
.modal-actions > .danger-button {
  min-height: 32px;
  padding: 5px 11px;
  font-size: 14px;
  font-weight: 500;
  line-height: 1.2;
  white-space: nowrap;
}

.copy-action-button {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  flex: 0 0 auto;
  white-space: nowrap;
}

#detailCopyButton {
  gap: 5px;
}

.copy-action-button svg,
#detailCopyButton svg,
#copyCategoryButton svg {
  width: 17px;
  height: 17px;
}

#copyCategoryButton {
  gap: 5px;
}

.square-button {
  display: inline-grid;
  place-items: center;
  width: 40px;
  padding: 0;
  border-radius: 50%;
}

.settings-button {
  width: 40px;
  padding: 0;
  flex: 0 0 auto;
}

.icon-text-button,
.secondary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
}

[data-icon] svg {
  display: block;
  width: 18px;
  height: 18px;
}

.header-menu-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 19;
  background: transparent;
}

.header-menu-backdrop.is-open {
  display: block;
}

.header-menu {
  position: fixed;
  top: var(--menu-top, 72px);
  right: var(--menu-right, 20px);
  width: min(300px, calc(100vw - 28px));
  padding: 12px;
  border: 1px solid rgba(117, 137, 141, 0.14);
  border-radius: 16px;
  background: #fff;
  box-shadow: var(--shadow);
}

.header-menu .sheet-handle {
  display: none;
}

.header-menu-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.header-menu-title h2 {
  font-size: 16px;
}

.menu-check-row,
.menu-action {
  min-height: 44px;
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 10px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--text);
  text-align: left;
}

.menu-check-row:hover,
.menu-action:hover {
  background: var(--selection);
}

.menu-check-row input {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
}

.menu-action-list {
  display: grid;
  gap: 4px;
}

.view {
  display: none;
}

.view.is-active {
  display: block;
}

.summary-panel {
  width: fit-content;
  max-width: 100%;
  margin: 0 0 12px;
  border: 0;
  border-radius: 999px;
  background: #fff;
  box-shadow: inset 0 0 0 1px rgba(117, 137, 141, 0.12);
  position: relative;
}

.summary-panel summary {
  min-height: 38px;
  padding: 9px 16px;
  color: var(--button);
  font-weight: 600;
  cursor: pointer;
  list-style-position: inside;
}

.summary-breakdown {
  min-width: 260px;
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  z-index: 5;
  padding: 14px;
  display: grid;
  gap: 7px;
  border-radius: 14px;
  background: #fff;
  box-shadow: var(--shadow);
}

.summary-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 18px;
  align-items: center;
  padding-left: 10px;
  border-left: 5px solid var(--chip);
  color: #35423b;
  font-size: 13px;
}

.summary-row strong {
  font-size: 13px;
  font-weight: 500;
}

.summary-empty {
  color: var(--muted);
  font-size: 13px;
}

.month-calendar {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  background: var(--line);
  gap: 1px;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 16px 45px rgba(39, 64, 68, 0.07);
}

.weekday {
  min-height: 36px;
  display: grid;
  place-items: center;
  background: #f8fbfb;
  color: #526269;
  font-weight: 600;
  font-size: 13px;
}

.month-day {
  min-height: 0;
  padding: 8px;
  background: #fff;
  position: relative;
  overflow: hidden;
}

.month-day.is-muted {
  background: #f8fbfc;
  color: #8a938c;
}

.month-day.is-today {
  outline: 2px solid var(--accent);
  outline-offset: calc(-1 * var(--calendar-cell-inner-offset));
}

.month-day.is-drop-target {
  outline: 2px solid color-mix(in srgb, var(--accent) 42%, white);
  outline-offset: -3px;
  background: color-mix(in srgb, var(--accent) 6%, white);
}

.date-number {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 6px;
  font-weight: 600;
}

.today-label {
  color: var(--button);
  font-size: 11px;
}

.month-events {
  position: relative;
  z-index: 3;
  display: flex;
  flex-wrap: wrap;
  align-content: flex-start;
  gap: 4px;
}

.month-background-events {
  position: absolute;
  inset: var(--calendar-cell-inner-offset);
  z-index: 1;
  display: grid;
  pointer-events: none;
}

.month-background-event {
  min-height: 0;
  border-radius: 0;
  border: 1px solid transparent;
}

.month-background-event.is-yellow {
  background: var(--background-event-yellow);
  border-color: rgba(215, 184, 75, 0.16);
}

.month-background-event.is-red {
  background: var(--background-event-red);
  border-color: rgba(193, 92, 84, 0.14);
}

.month-background-event.is-blue {
  background: var(--background-event-blue);
  border-color: rgba(93, 156, 236, 0.14);
}

.month-background-event.is-green {
  background: var(--background-event-green);
  border-color: rgba(122, 139, 81, 0.14);
}

.month-background-event.is-purple {
  background: var(--background-event-purple);
  border-color: rgba(146, 112, 168, 0.14);
}

.month-background-event.is-gray {
  background: var(--background-event-gray);
  border-color: rgba(110, 119, 112, 0.12);
}

.event-chip {
  display: inline-flex;
  align-items: center;
  flex: 0 1 auto;
  max-width: 7.5em;
  min-width: 0;
  margin: 0;
  padding: 3px 6px;
  border: 0;
  border: 1px solid color-mix(in srgb, var(--chip) 22%, white);
  border-radius: 5px;
  background: color-mix(in srgb, var(--chip) 14%, white);
  color: var(--text);
  text-align: left;
  overflow: hidden;
  touch-action: pan-y;
}

.event-chip.is-dragging {
  transform: translateY(-2px);
  outline: 1px solid color-mix(in srgb, var(--chip) 42%, white);
  touch-action: none;
}

.event-chip strong,
.event-chip span {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.event-chip-meta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 6px;
  align-items: baseline;
  font-size: 12px;
}

.event-chip-category,
.event-chip-time,
.event-chip-title {
  display: block;
}

.event-chip-icon {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 15px;
  height: 15px;
  margin-right: 3px;
  color: var(--chip);
}

.event-chip-icon svg {
  width: 14px;
  height: 14px;
}

.event-chip-title {
  min-width: 0;
  font-size: 12px;
  line-height: 1.2;
  color: var(--text);
}

body.is-compact-view .time-label {
  font-size: 11px;
  padding-top: 3px;
}

body.is-compact-view .week-event {
  left: 5px;
  right: 5px;
  padding: 4px 6px 10px;
  border-radius: 5px;
}

body.is-compact-view .schedule-event-title,
body.is-compact-view .schedule-event-time {
  font-size: 11px;
  line-height: 1.2;
}

body.is-compact-view .schedule-event-category {
  font-size: 12px;
  line-height: 1.2;
}

body.is-compact-view .week-event .schedule-event-time {
  margin-bottom: 1px;
}

body.is-compact-view .week-event .resize-handle {
  bottom: 2px;
  width: 34px;
  height: 3px;
}

body.is-compact-view .drop-preview {
  left: 5px;
  right: 5px;
}

body.is-compact-view .unplaced-panel {
  padding: 13px;
}

body.is-compact-view .unplaced-list {
  gap: 6px;
}

body.is-compact-view .unplaced-item {
  min-height: 42px;
  padding: 7px 9px;
}

.task-row.is-completed {
  opacity: 0.48;
}

.week-wrap {
  overflow-x: auto;
  border: 0;
  border-radius: 18px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.week-planner {
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.unplaced-panel {
  position: sticky;
  top: 14px;
  border-radius: 18px;
  background: #fff;
  padding: 16px;
  box-shadow: var(--shadow);
}

.panel-heading {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 12px;
}

.panel-heading h2 {
  font-size: 18px;
}

.panel-heading span,
.empty-note {
  color: var(--muted);
  font-size: 12px;
}

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

.unplaced-item {
  display: grid;
  grid-template-columns: 22px 1fr;
  gap: 9px;
  align-items: center;
  min-height: 48px;
  padding: 9px 10px;
  border: 0;
  border-left: 4px solid color-mix(in srgb, var(--chip) 52%, white);
  border-radius: 12px;
  background: color-mix(in srgb, var(--chip) 16%, white);
  color: var(--text);
  text-align: left;
  cursor: grab;
  user-select: none;
}

.unplaced-item.is-dragging {
  transform: translateY(-2px);
  outline: 1px solid color-mix(in srgb, var(--chip) 48%, white);
}

.unplaced-item svg {
  width: 20px;
  height: 20px;
  color: var(--chip);
}

.unplaced-item strong,
.unplaced-item span span {
  display: block;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.unplaced-item strong,
.task-main strong,
.detail-item strong,
.category-preview strong,
.theme-card strong,
.accent-option strong {
  font-weight: 500;
}

.unplaced-item span span {
  margin-top: 2px;
  color: var(--muted);
  font-size: 11px;
}

.week-timeline {
  min-width: 940px;
  display: grid;
  grid-template-columns: 64px repeat(7, minmax(118px, 1fr));
  position: relative;
}

.time-corner,
.day-head {
  position: sticky;
  top: 0;
  z-index: 3;
  min-height: 48px;
  border-bottom: 1px solid #DCECEF;
  background: #EAF4F8;
  color: #355B73;
  display: grid;
  place-items: center;
  font-weight: 600;
}

.day-head.is-today {
  background: #EAF4F8;
  color: var(--accent);
}

.time-label {
  height: var(--hour-height);
  border-bottom: 1px solid #DCECEF;
  background: #FFFFFF;
  color: #607D8B;
  font-size: 12px;
  text-align: right;
  padding: 4px 8px 0 0;
}

.day-column {
  position: relative;
  height: calc(var(--hour-height) * 18);
  border-left: 1px solid #DCECEF;
  background-color: #FFFFFF;
  background:
    repeating-linear-gradient(to bottom, transparent 0, transparent calc(var(--week-half-hour-height) - 1px), rgba(96, 125, 139, 0.22) var(--week-half-hour-height)),
    repeating-linear-gradient(to bottom, transparent 0, transparent calc(var(--week-hour-height) - 1px), #DCECEF var(--week-hour-height)),
    #FFFFFF;
}

.day-column.is-today {
  background:
    repeating-linear-gradient(to bottom, transparent 0, transparent calc(var(--week-half-hour-height) - 1px), rgba(96, 125, 139, 0.18) var(--week-half-hour-height)),
    repeating-linear-gradient(to bottom, transparent 0, transparent calc(var(--week-hour-height) - 1px), #DCECEF var(--week-hour-height)),
    color-mix(in srgb, var(--accent) 4%, white);
}

.day-column.is-drop-target {
  background-color: color-mix(in srgb, var(--accent) 10%, white);
  outline: 2px solid color-mix(in srgb, var(--accent) 42%, white);
  outline-offset: -2px;
}

.drop-preview {
  position: absolute;
  left: 7px;
  right: 7px;
  z-index: 1;
  border: 1px solid color-mix(in srgb, var(--accent) 48%, white);
  border-radius: 6px;
  background: color-mix(in srgb, var(--accent) 12%, white);
  pointer-events: none;
}

.week-event {
  position: absolute;
  z-index: 2;
  left: 7px;
  right: 7px;
  min-height: 0;
  padding: 6px 7px 13px;
  border: 1px solid color-mix(in srgb, var(--chip) 46%, white);
  border-radius: 6px;
  background: color-mix(in srgb, var(--chip) 17%, white);
  color: var(--text);
  text-align: left;
  overflow: hidden;
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
  touch-action: pan-y;
  transition: transform 120ms ease, outline-color 120ms ease;
}

.week-event:active {
  cursor: grabbing;
}

.week-event.is-dragging {
  transform: translateY(-2px);
  outline: 1px solid color-mix(in srgb, var(--chip) 48%, white);
  touch-action: none;
}

.week-event .resize-handle {
  position: absolute;
  left: 50%;
  bottom: 3px;
  z-index: 2;
  width: 40px;
  height: 4px;
  transform: translateX(-50%);
  border-radius: 999px;
  background: color-mix(in srgb, var(--chip) 42%, white);
  cursor: ns-resize;
  touch-action: none;
}

.week-event strong,
.week-event span {
  display: block;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.schedule-event-title {
  font-size: 12px;
  font-weight: 400;
  line-height: 1.3;
}

.schedule-event-category {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.3;
}

.schedule-event-time {
  font-size: 12px;
  font-weight: 400;
  line-height: 1.3;
}

.week-event .schedule-event-time {
  margin-bottom: 3px;
}

.week-homework-list {
  display: grid;
  gap: 3px;
  margin-top: 5px;
  padding-top: 5px;
  border-top: 1px solid color-mix(in srgb, var(--chip) 34%, white);
}

.week-event-homework-content {
  display: none;
}

.week-event-content-list {
  display: block;
  margin-top: 4px;
  padding-top: 4px;
  border-top: 1px solid color-mix(in srgb, var(--chip) 34%, white);
  color: var(--text);
  font-size: 11px;
  font-weight: 400;
  line-height: 1.22;
}

.week-event-content-list ul {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0 0 0 7px;
  list-style: none;
}

.week-event-content-list li {
  min-width: 0;
}

.week-event-content-list span,
.week-event-content-list small {
  min-width: 0;
  color: inherit;
  font-size: inherit;
  font-weight: 400;
  line-height: inherit;
}

.week-event-content-list small {
  display: block;
  color: #4b5563;
}

.week-event-content-more {
  color: #607D8B;
  font-weight: 500;
}

.auto-homework-check {
  display: flex;
  align-items: center;
  gap: 5px;
  min-height: 16px;
  color: var(--text);
  font-size: 11px;
  font-weight: 400;
  line-height: 1.2;
}

.auto-homework-check input {
  width: 13px;
  min-height: 13px;
  margin: 0;
  accent-color: var(--chip);
}

.auto-homework-check span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.week-event.is-compact {
  padding-top: 4px;
  padding-bottom: 12px;
}

.week-event.is-compact .schedule-event-time {
  display: none;
}

.week-event.is-compact .week-homework-list,
.week-event.is-tiny .week-homework-list {
  display: none;
}

.week-event.is-tiny .schedule-event-title,
.week-event.is-tiny .schedule-event-time {
  display: none;
}

.week-event.is-tiny {
  padding: 3px 6px 7px;
}

.week-event.is-tiny .resize-handle {
  bottom: 2px;
  width: 32px;
  height: 3px;
}

.week-event svg {
  -webkit-user-drag: none;
  pointer-events: none;
}

.now-line {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: #c6534f;
  z-index: 2;
}

.task-board {
  border: 0;
  border-radius: 18px;
  background: var(--panel);
  box-shadow: var(--shadow);
  overflow-x: auto;
}

.task-board.homework-list-board {
  display: grid;
  gap: 22px;
  padding: 0;
  overflow-x: visible;
  background: transparent;
  box-shadow: none;
}

.homework-panel {
  display: grid;
  gap: 12px;
}

.period-task-panel {
  container-type: inline-size;
}

.homework-panel-title {
  margin: 0;
  color: var(--text);
  font-size: 18px;
  font-weight: 600;
  line-height: 1.25;
}

.homework-panel-body {
  display: grid;
  gap: 18px;
}

.homework-group {
  display: grid;
  gap: 10px;
}

.homework-section-title {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  font-weight: 500;
}

.homework-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  align-items: start;
  gap: 12px;
}

.homework-card-masonry {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
  column-gap: 12px;
}

.homework-masonry-column {
  position: relative;
  display: grid;
  align-content: start;
  gap: 12px;
  min-width: 0;
  min-height: 44px;
}

@media (min-width: 960px) {
  .homework-card-grid {
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  }
}

.homework-empty {
  display: grid;
  place-items: center;
  min-height: 160px;
  border-radius: 16px;
  background: #fff;
  color: var(--muted);
  font-size: 15px;
  box-shadow: var(--shadow);
}

.homework-card {
  position: relative;
  container-type: inline-size;
  display: grid;
  align-content: start;
  gap: 8px;
  min-height: 0;
  padding: 16px;
  border: 1px solid color-mix(in srgb, var(--chip) 18%, var(--line));
  border-radius: 12px;
  background: #fff;
  color: var(--text);
  box-shadow: 0 8px 24px rgba(39, 64, 68, 0.07);
  cursor: default;
}

.homework-card.is-dragging {
  opacity: 0.72;
}

.homework-touch-ghost {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 80;
  pointer-events: none;
  opacity: 0.92;
  transform-origin: top left;
  will-change: transform;
  box-shadow: 0 16px 34px rgba(39, 64, 68, 0.18);
}

.homework-card.is-drop-before::before,
.homework-card.is-drop-after::after {
  content: "";
  position: absolute;
  top: 12%;
  bottom: 12%;
  width: 3px;
  border-radius: 3px;
  background: var(--accent);
  transition: left 120ms ease, right 120ms ease, opacity 120ms ease;
}

.homework-card.is-drop-before::before {
  left: -8px;
}

.homework-card.is-drop-after::after {
  right: -8px;
}

.homework-card-masonry .homework-card.is-drop-before::before,
.homework-card-masonry .homework-card.is-drop-after::after {
  left: 10%;
  right: 10%;
  width: auto;
  height: 3px;
  top: auto;
  bottom: auto;
}

.homework-card-masonry .homework-card.is-drop-before::before {
  top: -8px;
}

.homework-card-masonry .homework-card.is-drop-after::after {
  bottom: -8px;
}

.homework-masonry-column.is-drop-empty::after {
  content: "";
  display: block;
  height: 3px;
  margin: 4px 10%;
  border-radius: 3px;
  background: var(--accent);
}

.homework-card.is-complete {
  opacity: 0.78;
}

.homework-card.is-expanded {
  min-height: 0;
}

.homework-card-header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-right: 32px;
}

.card-menu-button {
  position: absolute;
  top: 5px;
  right: 3px;
  z-index: 2;
  display: inline-grid;
  place-items: center;
  width: 32px;
  height: 32px;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: #1F2937;
  line-height: 1;
}

.card-menu-button:hover {
  background: #F5F7FA;
  color: #1F2937;
}

.card-menu-button svg {
  width: 18px;
  height: 18px;
  stroke-width: 2.7;
}

.homework-subject-line {
  width: 4px;
  height: 20px;
  border-radius: 999px;
  background: var(--chip);
}

.homework-subject {
  color: var(--text);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.25;
}

.homework-due {
  display: grid;
  gap: 1px;
}

.homework-due span {
  color: var(--muted);
  font-size: 12px;
}

.homework-due strong {
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
}

.homework-progress {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 0;
}

.homework-progress-meter {
  flex: 0 0 78px;
  height: 12px;
  border: 1px solid color-mix(in srgb, var(--chip) 20%, var(--line));
  border-radius: 3px;
  background:
    linear-gradient(to right, color-mix(in srgb, var(--chip) 60%, #1E2D3C) 0 var(--progress), transparent var(--progress) 100%),
    repeating-linear-gradient(to right, transparent 0 calc(12.5% - 1px), rgba(96, 125, 139, 0.18) calc(12.5% - 1px) 12.5%),
    #f8fbfc;
}

.homework-progress span {
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
  white-space: nowrap;
}

.homework-expanded,
.homework-items {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 12px;
  row-gap: 3px;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px solid color-mix(in srgb, var(--chip) 16%, var(--line));
}

.homework-detail-check,
.homework-item {
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  min-height: 21px;
  padding: 0;
  color: var(--text);
  font-size: 13px;
  font-weight: 400;
  line-height: 1.2;
}

.homework-detail-check input {
  width: 15px;
  height: 15px;
  min-height: 15px;
  flex: 0 0 15px;
  margin: 0;
  accent-color: var(--chip);
}

.homework-detail-check span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.homework-detail-check input:checked + span {
  color: var(--muted);
  text-decoration: line-through;
}

.homework-collapse-button {
  grid-column: 1 / -1;
  width: fit-content;
  min-height: 22px;
  margin-top: 4px;
  padding: 2px 0;
  border: 0;
  background: transparent;
  color: #607D8B;
  font-size: 12px;
  font-weight: 500;
}

@media (max-width: 767px) {
  @container (max-width: 260px) {
    .homework-expanded,
    .homework-items {
      grid-template-columns: 1fr;
    }
  }
}

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

.period-task-add {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  flex: 0 0 auto;
  min-height: 34px;
  height: 34px;
  padding: 0 14px;
  border-radius: 18px;
  font-size: 14px;
  font-weight: 500;
  line-height: 1;
  white-space: nowrap;
  word-break: keep-all;
}

.period-task-add-plus {
  display: inline-block;
  font-size: 15px;
  font-weight: 500;
  line-height: 1;
}

.period-task-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

@container (min-width: 520px) {
  .period-task-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@container (min-width: 780px) {
  .period-task-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@container (min-width: 1040px) {
  .period-task-list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@container (min-width: 1300px) {
  .period-task-list {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

.period-task-card {
  position: relative;
  display: grid;
  grid-template-columns: 4px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  min-height: 132px;
  padding: 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  text-align: left;
}

.period-task-card.is-completed {
  border-color: color-mix(in srgb, var(--chip) 10%, var(--line));
  background: #fbfcfc;
  filter: saturate(0.78);
}

.period-task-card.is-completed .period-subject-line {
  opacity: 0.62;
}

.period-task-card .task-main strong {
  display: -webkit-box;
  overflow: hidden;
  -webkit-box-orient: vertical;
  -webkit-line-clamp: 2;
}

.period-complete-badge {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  min-height: 19px;
  margin-top: 3px;
  padding: 2px 7px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--chip) 12%, #fff);
  color: color-mix(in srgb, var(--chip) 70%, #344039);
  font-size: 11px;
  font-weight: 600;
  line-height: 1;
}

.completed-period-section {
  display: grid;
  gap: 10px;
  margin-top: 4px;
}

.completed-period-toggle {
  width: fit-content;
  min-height: 34px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--muted);
  font-size: 14px;
  font-weight: 500;
  text-align: left;
}

.completed-period-toggle:hover {
  color: var(--text);
}

.period-task-list.is-completed-list {
  margin-top: 2px;
}

.period-task-card .task-main,
.period-task-progress,
.period-task-meta {
  min-width: 0;
}

.period-task-card.is-dragging {
  opacity: 1;
}

.period-task-card.is-drop-before::before,
.period-task-card.is-drop-after::after {
  content: "";
  position: absolute;
  top: 12%;
  bottom: 12%;
  width: 3px;
  border-radius: 3px;
  background: var(--accent);
  transition: left 120ms ease, right 120ms ease, opacity 120ms ease;
}

.period-task-card.is-drop-before::before {
  left: -8px;
}

.period-task-card.is-drop-after::after {
  right: -8px;
}

.period-subject-line {
  width: 4px;
  height: 22px;
  margin-top: 23px;
  border-radius: 999px;
  background: var(--chip);
}

.period-task-progress {
  grid-column: 2;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}

.period-task-progress .homework-progress-meter {
  flex: 0 1 88px;
}

.period-task-progress span {
  flex: 0 0 auto;
  white-space: nowrap;
}

.period-progress-stepper {
  grid-column: 2;
  display: grid;
  grid-template-columns: 28px minmax(78px, auto) 28px;
  align-items: center;
  justify-content: start;
  gap: 6px;
  margin-top: 4px;
}

.period-progress-arrow,
.period-progress-value,
.period-progress-input {
  height: 28px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  color: var(--text);
  font-size: 13px;
  font-weight: 500;
  line-height: 1;
}

.period-progress-arrow {
  width: 28px;
  padding: 0;
}

.period-progress-arrow:disabled {
  cursor: not-allowed;
  opacity: 0.34;
}

.period-progress-value {
  min-width: 78px;
  padding: 0 10px;
  transition: background-color 140ms ease, transform 140ms ease;
}

.period-progress-value:active,
.period-progress-arrow:active:not(:disabled) {
  transform: translateY(1px);
  background: var(--selection);
}

.period-progress-input {
  width: 78px;
  min-height: 28px;
  padding: 0 8px;
  text-align: center;
}

.period-task-meta {
  grid-column: 2;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.4;
}

.card-action-menu {
  position: fixed;
  z-index: 60;
  display: grid;
  min-width: 164px;
  padding: 6px;
  border: 1px solid rgba(117, 137, 141, 0.16);
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 16px 40px rgba(39, 64, 68, 0.16);
  opacity: 0;
  transform: translateY(-2px);
  transition: opacity 120ms ease, transform 120ms ease;
}

.card-action-menu.is-open {
  opacity: 1;
  transform: translateY(0);
}

.card-action-item {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  min-height: 36px;
  padding: 8px 10px;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  text-align: left;
}

.card-action-item:hover {
  background: var(--selection);
}

.card-action-item.is-delete {
  color: #A94642;
}

.card-action-item svg {
  width: 16px;
  height: 16px;
  flex: 0 0 auto;
}

#taskCategory,
#taskSubject,
#taskUnit {
  appearance: none;
  -webkit-appearance: none;
  min-height: 48px;
  padding: 12px 40px 12px 16px;
  background:
    linear-gradient(45deg, transparent 50%, #607D8B 50%) calc(100% - 20px) 52% / 6px 6px no-repeat,
    linear-gradient(135deg, #607D8B 50%, transparent 50%) calc(100% - 16px) 52% / 6px 6px no-repeat,
    #fff;
}

.homework-empty.is-compact {
  min-height: 96px;
  box-shadow: none;
  border: 1px solid var(--line);
}

.task-row {
  min-width: 760px;
  display: grid;
  grid-template-columns: 180px 90px 1fr 80px;
  gap: 14px;
  align-items: center;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  background: #fffdf7;
}

.task-row:last-child {
  border-bottom: 0;
}

.task-main strong,
.task-main span {
  display: block;
}

.task-main span,
.task-date,
.task-status {
  color: var(--muted);
  font-size: 12px;
}

.gantt-track {
  height: 26px;
  background: #edf0ea;
  border: 1px solid var(--line);
  position: relative;
}

.gantt-bar {
  position: absolute;
  top: 4px;
  height: 16px;
  min-width: 10px;
  background: var(--accent-2);
}

.task-row.is-not-started .gantt-bar {
  background: #c7cec5;
}

.task-row.is-completed .task-main strong::before {
  content: "✓ ";
}

.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 20;
  padding: 22px;
  background: rgba(31, 39, 35, 0.38);
  overflow-y: auto;
}

.modal-backdrop.is-open {
  display: grid;
  place-items: start center;
}

.sheet-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 18;
  background: rgba(31, 39, 35, 0.24);
}

.sheet-backdrop.is-open {
  display: block;
}

.day-sheet {
  position: absolute;
  left: 50%;
  bottom: 0;
  width: min(760px, calc(100% - 24px));
  max-height: calc(100vh - 32px);
  transform: translateX(-50%);
  overflow-y: auto;
  padding: 10px 22px 22px;
  border-radius: 22px 22px 0 0;
  background: #fff;
  box-shadow: 0 -18px 50px rgba(39, 64, 68, 0.16);
}

.sheet-handle {
  width: 44px;
  height: 5px;
  margin: 2px auto 14px;
  border-radius: 999px;
  background: rgba(117, 137, 141, 0.24);
}

.day-event-list {
  display: grid;
  gap: 10px;
  margin: 16px 0;
}

.day-sheet-event {
  position: relative;
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  padding: 10px 12px;
  border-radius: 16px;
  background: color-mix(in srgb, var(--chip) 8%, white);
}

.day-sheet-icon {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  color: var(--chip);
  background: #fff;
}

.day-sheet-icon svg {
  width: 20px;
  height: 20px;
}

.day-sheet-body time,
.day-sheet-body strong,
.day-sheet-body span,
.day-sheet-body small {
  display: block;
}

.day-sheet-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  column-gap: 12px;
  align-items: end;
  min-width: 0;
}

.day-sheet-body > :not(.day-sheet-actions) {
  grid-column: 1 / -1;
}

.day-sheet-body .schedule-event-time {
  margin-top: 2px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 400;
}

.day-sheet-body .schedule-event-category {
  color: var(--text);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.3;
}

.day-sheet-body .schedule-event-title {
  margin-top: 2px;
  color: var(--text);
  font-size: 13px;
  font-weight: 400;
  line-height: 1.35;
}

.day-sheet-body small {
  margin-top: 4px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.45;
}

.day-sheet-body > .day-homework-content {
  display: grid;
  grid-column: 1 / 2;
  gap: 0;
  margin-top: 5px;
  color: var(--text);
  min-width: 0;
}

.day-homework-content li {
  color: var(--text);
  font-size: 13px;
  line-height: 1.35;
}

.day-sheet-body > .day-sheet-actions {
  position: static;
  grid-column: 2 / 3;
  display: flex;
  align-self: end;
  justify-self: end;
  gap: 6px;
  margin-top: 0;
}

.day-sheet-actions .modal-action-button {
  padding-inline: 9px;
}

.day-homework-card {
  background: color-mix(in srgb, var(--chip) 9%, white);
}

.day-homework-list {
  display: grid;
  gap: 7px;
  margin-top: 8px;
}

.day-homework-card .auto-homework-check {
  font-size: 13px;
}

.day-homework-card .auto-homework-check input {
  width: 16px;
  min-height: 16px;
}

.sheet-add-button {
  width: 100%;
}

.copy-menu-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 42;
  background: transparent;
}

.copy-menu-backdrop.is-open {
  display: block;
}

.copy-menu {
  position: fixed;
  top: var(--copy-menu-top, 72px);
  left: var(--copy-menu-left, 20px);
  width: min(260px, calc(100vw - 28px));
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: #fff;
  box-shadow: 0 14px 34px rgba(39, 64, 68, 0.14);
}

.copy-menu .sheet-handle {
  display: none;
}

.copy-menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  margin-bottom: 8px;
}

.copy-menu-header h2 {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
}

.copy-menu-header .square-button {
  width: 32px;
  height: 32px;
}

.copy-menu-options {
  display: grid;
  gap: 4px;
}

.copy-menu-option {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  justify-content: flex-start;
  min-height: 40px;
  padding: 0 10px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
}

.copy-menu-option:hover {
  background: var(--selection);
}

.copy-menu-option svg {
  width: 17px;
  height: 17px;
  color: var(--accent);
}

.modal {
  width: min(720px, 100%);
  padding: 26px;
  background: var(--panel);
  border: 0;
  border-radius: 18px;
  box-shadow: var(--shadow);
}

.detail-modal {
  width: min(560px, 100%);
}

.detail-modal .modal-header {
  align-items: flex-start;
  margin-bottom: 4px;
}

.detail-modal .modal-header h2 {
  margin: 0;
  color: var(--text);
  font-size: 23px;
  font-weight: 700;
  line-height: 1.18;
}

.detail-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: 4px 0 18px;
}

.detail-item {
  padding: 0;
  border-bottom: 0;
}

.detail-item.is-wide {
  grid-column: 1 / -1;
}

.detail-item.content-detail-item {
  order: 2;
  margin-top: 8px;
  padding: 8px 0 12px;
  border-bottom: 1px solid var(--line);
}

.detail-primary-time {
  order: 1;
  margin-top: 2px;
}

.detail-primary-time span {
  display: none;
}

.detail-primary-time strong {
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.25;
}

#eventDetailMemoItem {
  order: 3;
  margin-top: 8px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.detail-meta-item {
  order: 4;
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-top: 10px;
  color: var(--muted);
}

#eventDetailDateItem {
  order: 5;
  margin-top: 3px;
}

.detail-item span,
.detail-item strong,
.detail-item p {
  display: block;
}

.detail-item span {
  margin-bottom: 0;
  color: var(--muted);
  font-size: 12px;
}

.detail-item strong,
.detail-item p {
  margin: 0;
  color: var(--text);
  line-height: 1.6;
  white-space: pre-wrap;
}

.detail-meta-item span,
.detail-meta-item strong {
  display: inline;
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
  line-height: 1.35;
}

.detail-meta-item span::after {
  content: "：";
}

.detail-modal .detail-primary-time strong {
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  line-height: 1.25;
}

.detail-modal #eventDetailMemoItem span {
  margin-bottom: 4px;
}

.detail-modal #eventDetailMemoItem p {
  color: var(--text);
  font-size: 13px;
  font-weight: 400;
  line-height: 1.45;
}

.detail-modal .modal-actions {
  margin-top: 14px;
  padding-top: 0;
}

.wide-modal {
  width: min(900px, 100%);
}

#categoryModal .modal {
  max-height: calc(100vh - 32px);
  overflow: auto;
}

.modal-header,
.modal-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}

.modal-actions button,
.modal-actions .primary-button,
.modal-actions .secondary-button,
.modal-actions .danger-button,
.modal-actions #detailEditButton,
.modal-actions #detailDeleteButton,
.modal-actions #cancelCategoryButton,
.modal-actions #newCategoryButton {
  font-size: 14px;
  font-weight: 500;
  line-height: 1.2;
}

form label {
  display: grid;
  gap: 6px;
  color: #344039;
  font-size: 13px;
  font-weight: 500;
}

.recurrence-end-field,
.background-color-field {
  display: none;
}

.recurrence-end-field.is-visible,
.background-color-field.is-visible {
  display: grid;
}

[data-date-input],
[data-time-input] {
  cursor: pointer;
  background-image: linear-gradient(transparent, transparent);
}

.date-picker-popover,
.time-picker-popover,
.custom-select-panel {
  display: none;
  position: fixed;
  z-index: 35;
  padding: 14px;
  border: 1px solid rgba(117, 137, 141, 0.16);
  border-radius: 18px;
  background: #fff;
  box-shadow: 0 18px 50px rgba(39, 64, 68, 0.14);
}

.time-picker-popover {
  width: fit-content;
  max-width: calc(100vw - 24px);
  padding: 12px 14px;
}

.date-picker-popover.is-open,
.time-picker-popover.is-open,
.custom-select-panel.is-open {
  display: block;
}

.custom-select-trigger {
  display: none;
  width: 100%;
  min-height: 48px;
  padding: 0 42px 0 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--text);
  font-size: 15px;
  font-weight: 500;
  text-align: left;
  position: relative;
}

.custom-select-trigger::after {
  content: "⌄";
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-52%);
  color: var(--muted);
  font-size: 16px;
}

.custom-select-panel {
  z-index: 45;
  inset: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: rgba(31, 39, 35, 0.22);
  box-shadow: none;
}

.custom-select-sheet {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  max-height: min(72vh, 520px);
  overflow: hidden;
  padding: 10px 18px 22px;
  border-radius: 22px 22px 0 0;
  background: #fff;
  box-shadow: 0 -18px 50px rgba(39, 64, 68, 0.16);
}

.custom-select-sheet.has-overflow:not(.is-at-bottom)::after,
.custom-select-sheet.has-overflow:not(.is-at-bottom)::before {
  position: absolute;
  left: 18px;
  right: 18px;
  bottom: 22px;
  height: 62px;
  pointer-events: none;
}

.custom-select-sheet.has-overflow:not(.is-at-bottom)::after {
  content: "";
  z-index: 2;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0), #fff 72%);
}

.custom-select-sheet.has-overflow:not(.is-at-bottom)::before {
  content: "▼\Aスクロール";
  z-index: 3;
  display: grid;
  place-items: center;
  padding-top: 10px;
  white-space: pre;
  color: #355B73;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.25;
  text-align: center;
}

.custom-select-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}

.custom-select-header strong {
  font-size: 15px;
  font-weight: 600;
}

.custom-select-options {
  display: grid;
  gap: 2px;
  max-height: min(52vh, 360px);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(96, 125, 139, 0.42) transparent;
}

.custom-select-option {
  width: 100%;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 10px 12px;
  border: 0;
  border-radius: 10px;
  background: #fff;
  color: var(--text);
  font-size: 16px;
  font-weight: 500;
  text-align: left;
}

.custom-select-option.is-selected {
  background: var(--selection);
  color: var(--button);
}

.custom-select-option.is-disabled {
  color: var(--muted);
  opacity: 0.48;
}

.custom-select-option svg {
  width: 20px;
  height: 20px;
  flex: 0 0 auto;
}

.date-picker-header {
  display: grid;
  grid-template-columns: 36px 1fr 36px;
  gap: 8px;
  align-items: center;
  margin-bottom: 12px;
}

.date-picker-header strong {
  text-align: center;
  font-size: 15px;
}

.date-picker-header .square-button {
  width: 36px;
  min-height: 36px;
  font-size: 22px;
  line-height: 1;
}

.date-picker-grid {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 5px;
}

.date-picker-weekday {
  min-height: 28px;
  display: grid;
  place-items: center;
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
}

.date-picker-day {
  min-height: 36px;
  border: 1px solid transparent;
  border-radius: 10px;
  background: #fff;
  color: var(--text);
}

.date-picker-day:hover {
  background: var(--selection);
  border-color: color-mix(in srgb, var(--accent) 35%, white);
}

.date-picker-day.is-muted {
  color: #9aa7ad;
  background: #fafcfd;
}

.date-picker-day.is-today {
  border-color: var(--accent);
}

.date-picker-day.is-selected {
  background: var(--button);
  border-color: var(--button);
  color: #fff;
  font-weight: 600;
}

.date-picker-actions {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-top: 12px;
}

.time-picker-title {
  margin: 0 0 12px;
  text-align: center;
  font-size: 15px;
}

.time-picker-controls {
  display: grid;
  grid-template-columns: 92px auto 92px;
  gap: 6px;
  align-items: end;
  justify-content: center;
}

.time-picker-field {
  display: grid;
  gap: 7px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
  position: relative;
}

.time-picker-field select {
  appearance: none;
  -webkit-appearance: none;
  min-height: 46px;
  width: 92px;
  padding: 0 28px 0 13px;
  border-color: color-mix(in srgb, var(--accent) 24%, var(--line));
  border-radius: 12px;
  background:
    linear-gradient(45deg, transparent 50%, #607D8B 50%) calc(100% - 17px) 52% / 6px 6px no-repeat,
    linear-gradient(135deg, #607D8B 50%, transparent 50%) calc(100% - 13px) 52% / 6px 6px no-repeat,
    #fff;
  color: var(--text);
  font-size: 16px;
  font-weight: 500;
  text-align: left;
}

.time-picker-separator {
  padding-bottom: 12px;
  color: var(--text);
  font-size: 20px;
  font-weight: 500;
}

.background-color-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.background-color-options.is-chip-only {
  align-items: center;
}

.background-color-option {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 10px;
  border: 1px solid rgba(117, 137, 141, 0.18);
  border-radius: 999px;
  background: #fff;
  color: var(--text);
  font-size: 13px;
}

.background-color-option.is-active {
  border-color: var(--accent);
  background: var(--selection);
}

.background-color-option.is-chip-only {
  width: 28px;
  height: 28px;
  min-height: 28px;
  padding: 0;
  gap: 0;
  justify-content: center;
  border-radius: 8px;
  background: #fff;
}

.background-color-option.is-chip-only.is-active {
  border-color: var(--accent);
  outline: 2px solid color-mix(in srgb, var(--accent) 45%, white);
  outline-offset: 2px;
}

.background-color-swatch {
  width: 14px;
  height: 14px;
  flex: 0 0 auto;
  border: 1px solid rgba(30, 45, 60, 0.08);
  border-radius: 4px;
  background: var(--bg-option);
}

.background-color-option.is-chip-only .background-color-swatch {
  width: 18px;
  height: 18px;
  border-color: rgba(30, 45, 60, 0.14);
  border-radius: 4px;
}

.modal-note {
  margin: 14px 0;
  color: var(--muted);
  line-height: 1.6;
}

.scope-options {
  display: grid;
  gap: 10px;
  margin: 16px 0 22px;
}

.scope-options label {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 42px;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
}

.scope-options input {
  width: 18px;
  min-height: 18px;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #fff;
  color: var(--text);
  min-height: 40px;
  padding: 8px 11px;
}

textarea {
  resize: vertical;
}

.form-grid,
.homework-fields,
.category-layout {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 16px;
  margin: 14px 0;
  align-items: stretch;
}

.homework-fields {
  display: none;
  grid-template-columns: 1fr;
}

.homework-fields.is-visible {
  display: grid;
}

.date-time-fields {
  display: grid;
  grid-template-columns: minmax(0, 4fr) minmax(0, 3fr) minmax(0, 3fr);
  grid-column: 1 / -1;
  gap: 16px;
}

#eventModal .form-grid {
  grid-template-columns: 1fr;
}

.event-label-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-column: 1 / -1;
  gap: 16px;
  align-items: end;
}

.event-display-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-column: 1 / -1;
  gap: 16px;
  align-items: end;
}

.background-color-field,
.recurrence-end-field {
  grid-column: 1 / -1;
}

#eventModal .background-color-options {
  gap: 7px;
}

#eventModal textarea {
  min-height: 86px;
}

#eventForm > label {
  margin-top: 16px;
}

.homework-content-editor {
  margin: 18px 0 14px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: #fbfcfc;
}

.homework-content-header {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 16px;
  margin-bottom: 12px;
}

.homework-content-header h3 {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
}

.homework-content-header > div {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-start;
}

.homework-content-list {
  display: grid;
  gap: 6px;
}

.homework-content-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 34px;
  gap: 8px;
  align-items: start;
  padding: 8px;
  border: 1px solid rgba(117, 137, 141, 0.16);
  border-radius: 12px;
  background: #fff;
}

.homework-content-row-body {
  display: grid;
  gap: 6px;
  min-width: 0;
}

.homework-content-row-body strong {
  font-size: 14px;
  font-weight: 500;
  line-height: 1.35;
  white-space: pre-wrap;
}

.homework-content-type {
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
}

.homework-content-input {
  min-height: 38px;
  font-size: 14px;
}

.homework-content-remove {
  width: 34px;
  height: 34px;
}

.homework-content-picker {
  display: grid;
  gap: 16px;
  max-height: min(58vh, 520px);
  overflow-y: auto;
  margin: 16px 0;
  padding-right: 4px;
}

.homework-content-picker-section {
  display: grid;
  gap: 10px;
}

.homework-content-picker-section h3 {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
}

.homework-picker-group {
  display: grid;
  gap: 8px;
  padding: 10px;
  border: 1px solid rgba(117, 137, 141, 0.15);
  border-radius: 12px;
  background: #fff;
}

.homework-picker-group > strong {
  font-size: 14px;
  font-weight: 600;
}

.homework-picker-option {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  color: var(--text);
  font-size: 14px;
}

.homework-picker-option input {
  width: 17px;
  min-height: 17px;
  flex: 0 0 17px;
  padding: 0;
}

.detail-homework-content {
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.35;
}

#eventDetailHomeworkContent.detail-homework-content {
  margin: 0;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.35;
}

#eventDetailHomeworkContent .homework-content-display-list {
  display: grid;
  gap: 4px;
  margin: 0;
  padding-left: 1.12em;
}

#eventDetailHomeworkContent .homework-content-display-list li {
  margin: 0;
  padding: 0;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.35;
}

#eventDetailHomeworkContent .homework-content-display-list li span,
#eventDetailHomeworkContent .homework-content-display-list li small {
  display: block;
  margin: 0;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.35;
  white-space: pre-wrap;
}

.homework-content-display-list,
.day-homework-content ul {
  display: grid;
  gap: 5px;
  margin: 0;
  padding-left: 1.2em;
}

.homework-content-display-list li span,
.homework-content-display-list li small,
.day-homework-content li span,
.day-homework-content li small {
  display: block;
  white-space: pre-wrap;
}

.homework-content-display-list li small,
.day-homework-content li small {
  color: var(--text);
  font-size: 14px;
  line-height: 1.35;
}

#categoryModal .category-layout {
  align-items: start;
}

.check-row {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 40px;
  padding-top: 0;
}

.check-row input {
  width: 18px;
  min-height: 18px;
}

.event-check-fields {
  display: flex;
  align-items: center;
  min-height: 40px;
}

.event-modal-actions {
  justify-content: flex-end;
}

.event-modal-actions.is-editing {
  justify-content: space-between;
}

.event-advanced-settings {
  margin-top: 18px;
  border: 1px solid rgba(117, 137, 141, 0.18);
  border-radius: 14px;
  background: #fff;
}

.event-advanced-settings summary {
  min-height: 42px;
  padding: 11px 12px;
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
}

.event-advanced-fields {
  display: grid;
  gap: 14px;
  padding: 0 12px 12px;
}

.modal-actions {
  margin-top: 22px;
}

.category-list-wrapper {
  position: relative;
  min-height: 0;
  height: auto;
}

.category-list-frame {
  position: relative;
  overflow: hidden;
  border-radius: 14px;
  background: #fff;
  box-shadow: inset 0 0 0 1px rgba(117, 137, 141, 0.12);
}

.category-list {
  border: 0;
  background: #fff;
  height: auto;
  min-height: 0;
  max-height: min(560px, calc(100vh - 178px));
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: rgba(96, 125, 139, 0.42) transparent;
}

.category-list::-webkit-scrollbar {
  width: 8px;
}

.category-list::-webkit-scrollbar-track {
  background: transparent;
  border: 0;
}

.category-list::-webkit-scrollbar-thumb {
  border-radius: 999px;
  background: rgba(96, 125, 139, 0.32);
  border: 2px solid #fff;
}

.category-list-wrapper:not(.has-overflow) .category-list {
  scrollbar-width: none;
}

.category-list-wrapper:not(.has-overflow) .category-list::-webkit-scrollbar {
  width: 0;
}

.category-list-fade {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 42px;
  z-index: 4;
  display: none;
  pointer-events: none;
  background: linear-gradient(to bottom, rgba(255, 255, 255, 0), #fff 88%);
}

.category-list-wrapper.has-overflow:not(.is-at-bottom) .category-list-fade {
  display: block;
}

.category-scroll-overlay {
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  min-height: 46px;
  pointer-events: none;
  color: #355B73;
  text-align: center;
  background: #fff;
}

.category-list-wrapper.has-overflow:not(.is-at-bottom) .category-scroll-overlay {
  display: flex;
}

.category-scroll-overlay span {
  font-size: 14px;
  line-height: 1;
}

.category-scroll-overlay strong {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.1;
}

.category-layout.is-creating {
  grid-template-columns: minmax(0, 1fr);
}

.category-layout.is-creating .category-list-wrapper {
  display: none;
}

.category-layout.is-creating #deleteCategoryButton,
.category-layout.is-creating #newCategoryButton {
  display: none;
}

.category-item {
  position: relative;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 4px;
  min-height: 44px;
  padding: 4px;
  border: 0;
  border-bottom: 1px solid rgba(117, 137, 141, 0.12);
  background: #fff;
  text-align: left;
}

.category-select-button {
  flex: 1 1 auto;
  min-width: 0;
  min-height: 38px;
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 6px 8px;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--text);
  text-align: left;
}

.category-select-button span:last-child {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.category-drag-handle {
  display: inline-grid;
  place-items: center;
  width: 32px;
  min-height: 38px;
  padding: 0;
  border: 0;
  border-radius: 10px;
  background: transparent;
  color: var(--muted);
  cursor: grab;
  touch-action: pan-y;
}

.category-drag-handle:active {
  cursor: grabbing;
}

.category-item svg {
  width: 22px;
  height: 22px;
  flex: 0 0 auto;
}

.category-item .category-drag-handle svg {
  width: 18px;
  height: 18px;
}

.category-item.is-active {
  background: var(--selection);
}

.category-item.is-dragging {
  opacity: 0.58;
}

.category-item.is-drop-before::before,
.category-item.is-drop-after::after {
  content: "";
  position: absolute;
  left: 8px;
  right: 8px;
  height: 2px;
  border-radius: 999px;
  background: var(--accent);
}

.category-item.is-drop-before::before {
  top: 0;
}

.category-item.is-drop-after::after {
  bottom: 0;
}

.swatch {
  width: 18px;
  height: 18px;
  border: 1px solid rgba(0, 0, 0, 0.16);
  background: var(--chip);
}

.category-editor {
  display: grid;
  gap: 11px;
}

.color-swatches {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-content: start;
}

.color-swatch {
  width: 28px;
  height: 28px;
  border: 1px solid rgba(30, 45, 60, 0.16);
  border-radius: 50%;
  background: var(--swatch-color);
}

.color-swatch.is-active {
  outline: 2px solid color-mix(in srgb, var(--swatch-color) 55%, #1E2D3C);
  outline-offset: 2px;
}

.icon-search {
  min-height: 38px;
}

.icon-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
  max-height: 154px;
  overflow: hidden;
  padding: 2px;
}

.icon-grid.is-expanded {
  max-height: 260px;
  overflow-y: auto;
}

.icon-grid-toggle {
  min-height: 30px;
  justify-self: start;
  padding: 3px 10px;
  border: 1px solid rgba(117, 137, 141, 0.16);
  border-radius: 999px;
  background: #fff;
  color: #355B73;
  font-size: 13px;
  font-weight: 500;
}

.icon-grid-toggle[hidden] {
  display: none;
}

.icon-option {
  min-height: 46px;
  display: grid;
  place-items: center;
  gap: 4px;
  padding: 7px 4px;
  border: 1px solid rgba(117, 137, 141, 0.16);
  border-radius: 10px;
  background: #fff;
  color: var(--text);
}

.icon-option svg {
  width: 24px;
  height: 24px;
}

.icon-option.is-active {
  border-color: var(--accent);
  background: var(--selection);
}

.field-heading {
  margin: 2px 0 -6px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 500;
}

.category-preview {
  min-height: 42px;
  display: flex;
  align-items: center;
  gap: 9px;
  border: 1px solid rgba(117, 137, 141, 0.16);
  border-radius: 14px;
  background: #fff;
  padding: 8px 10px;
}

.category-preview svg {
  width: 24px;
  height: 24px;
  flex: 0 0 auto;
}

.category-background-preview {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
}

.category-visibility-preview {
  margin-left: auto;
  color: #355B73;
  font-size: 12px;
  white-space: nowrap;
}

.category-visibility-preview + .category-background-preview {
  margin-left: 0;
}

.calendar-visibility-field {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
  padding: 0;
  border: 0;
}

.calendar-visibility-field legend {
  grid-column: 1 / -1;
  color: #344039;
  font-size: 13px;
  font-weight: 500;
}

.calendar-visibility-field label {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 6px 8px;
  border: 1px solid rgba(117, 137, 141, 0.16);
  border-radius: 999px;
  background: #fff;
  font-size: 13px;
}

.calendar-visibility-field input {
  width: 15px;
  min-height: 15px;
  margin: 0 5px 0 0;
}

.theme-modal {
  width: min(760px, 100%);
}

.theme-section {
  margin-top: 22px;
}

.theme-section h3 {
  margin: 0 0 12px;
  font-size: 14px;
}

.theme-grid,
.accent-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 12px;
}

.theme-card,
.accent-option {
  min-height: 78px;
  border: 1px solid rgba(117, 137, 141, 0.16);
  border-radius: 16px;
  background: #fff;
  color: var(--text);
  text-align: left;
  padding: 14px;
}

.theme-card strong,
.theme-card span,
.accent-option strong,
.accent-option span {
  display: block;
}

.theme-card span,
.accent-option span {
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
}

.theme-card.is-active,
.accent-option.is-active {
  border-color: var(--accent);
  background: var(--selection);
}

.theme-card:disabled {
  cursor: not-allowed;
  opacity: 0.58;
}

.accent-option {
  display: grid;
  grid-template-columns: 28px 1fr;
  align-items: center;
  gap: 10px;
}

.accent-swatch {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--option-color);
  box-shadow: inset 0 0 0 1px rgba(24, 40, 43, 0.1);
}

.setting-note {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 14px;
  border-radius: 16px;
  background: var(--selection);
}

.setting-note span {
  color: var(--muted);
}

@media (min-width: 821px) {
  #eventModal .modal {
    width: min(684px, 100%);
    padding: 24px;
  }

  .app-shell {
    padding: 12px 0 14px;
  }

  .app-header {
    align-items: center;
    margin-bottom: var(--schedule-header-gap);
  }

  h1 {
    font-size: var(--schedule-title-size);
    line-height: 1.08;
  }

  .eyebrow {
    margin-bottom: 2px;
    font-size: var(--schedule-subtitle-size);
  }

  .tab,
  .header-actions .primary-button,
  .header-actions .secondary-button,
  .header-actions .icon-text-button {
    min-height: var(--schedule-action-height);
  }

  .tab {
    font-size: var(--schedule-tab-font-size);
  }

  .header-actions .primary-button,
  .header-actions .secondary-button,
  .header-actions .icon-text-button {
    font-size: var(--schedule-action-font-size);
  }

  .planner-strip {
    margin-bottom: 12px;
  }

  .summary-panel summary {
    min-height: 30px;
    padding: 5px 12px;
  }

}

@media (max-width: 820px) {
  select.has-custom-select {
    display: none;
  }

  .custom-select-trigger {
    display: block;
    min-height: 46px;
    font-size: 16px;
    padding-block: 10px;
    padding-inline: 14px 40px;
  }

  .app-header,
  .homework-toolbar,
  .planner-strip,
  .period-controls {
    align-items: stretch;
    flex-direction: column;
  }

  .app-header {
    position: relative;
    gap: 14px;
    padding-right: 112px;
  }

  .brand-block {
    padding-right: 0;
  }

  .header-actions {
    flex-wrap: nowrap;
    width: 100%;
  }

  #settingsButton {
    position: absolute;
    top: 18px;
    right: 0;
  }

  #printMonthButton {
    position: absolute;
    top: 18px;
    right: 48px;
  }

  #addEventButton,
  #addTaskButton {
    flex: 1 1 auto;
    min-width: 0;
    padding-inline: 10px;
  }

  #displayButton {
    flex: 0 0 auto;
    padding-inline: 10px;
  }

  .header-menu-backdrop {
    background: rgba(31, 39, 35, 0.24);
  }

  .header-menu {
    top: auto;
    right: auto;
    left: 0;
    bottom: 0;
    width: 100%;
    padding: 10px 18px 20px;
    border-width: 1px 0 0;
    border-radius: 22px 22px 0 0;
    box-shadow: 0 -18px 50px rgba(39, 64, 68, 0.14);
  }

  .header-menu .sheet-handle {
    display: block;
  }

  .menu-check-row,
  .menu-action {
    min-height: 50px;
    padding: 10px 12px;
  }

  .planner-strip {
    display: flex;
    gap: 12px;
  }

  .period-controls {
    display: flex;
    justify-content: stretch;
    gap: 10px;
  }

  .period-toolbar {
    justify-content: center;
  }

  .week-planner {
    grid-template-columns: 1fr;
  }

  .unplaced-panel {
    position: static;
    padding: 14px;
  }

  .unplaced-list {
    grid-auto-flow: column;
    grid-auto-columns: minmax(180px, 1fr);
    overflow-x: auto;
    padding-bottom: 4px;
  }

  .tabs {
    width: 100%;
  }

  .tab {
    flex: 1;
    min-width: 0;
  }

  .summary-panel {
    width: 100%;
  }

  .summary-breakdown {
    position: static;
    min-width: 0;
    box-shadow: none;
    border-top: 1px solid rgba(117, 137, 141, 0.12);
    border-radius: 0 0 14px 14px;
  }

  .month-calendar {
    grid-template-columns: repeat(7, minmax(0, 1fr));
  }

  .weekday {
    min-height: 24px;
    font-size: 11px;
  }

  .month-day {
    min-height: 72px;
    height: 72px;
    padding: 3px;
  }

  .date-number {
    margin-bottom: 2px;
    font-size: 11px;
    line-height: 1;
  }

  .today-label {
    display: none;
  }

  .event-chip {
    display: inline-grid;
    grid-template-columns: 1fr;
    place-items: center;
    gap: 0;
    width: 18px;
    height: 18px;
    min-height: 18px;
    margin: 2px 1px 0 0;
    padding: 0;
    border: 0;
    border-radius: 50%;
    background: color-mix(in srgb, var(--chip) 13%, white);
    vertical-align: top;
  }

  .event-chip-meta,
  .event-chip-title {
    display: none;
  }

  .event-chip-icon {
    display: grid;
    place-items: center;
    width: 18px;
    height: 18px;
    margin-right: 0;
    color: var(--chip);
  }

  .event-chip-icon svg {
    width: 13px;
    height: 13px;
  }

  .form-grid,
  .homework-fields,
  .category-layout,
  .detail-list {
    grid-template-columns: 1fr;
  }

  #eventModal .form-grid {
    grid-template-columns: 1fr;
  }

  #eventModal .date-time-fields {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px 12px;
  }

  #eventModal .date-time-fields label:first-child {
    grid-column: 1 / -1;
  }

  #eventModal .event-display-fields {
    grid-template-columns: 1fr;
    gap: 10px;
    align-items: stretch;
  }

  .theme-grid,
  .accent-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .homework-card-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
  }

  .homework-card-masonry {
    column-gap: 10px;
  }

  .homework-masonry-column {
    gap: 10px;
  }

  .homework-card-masonry .homework-card {
    touch-action: none;
    user-select: none;
    -webkit-user-select: none;
  }

  .homework-card {
    padding: 14px;
  }

  .homework-expanded {
    column-gap: 10px;
    row-gap: 3px;
    margin-top: 7px;
    padding-top: 7px;
  }

  .homework-detail-check {
    min-height: 21px;
    padding: 0;
    font-size: 13px;
    line-height: 1.2;
  }

  .homework-detail-check input {
    width: 15px;
    height: 15px;
    min-height: 15px;
    flex-basis: 15px;
  }

  .homework-progress-meter {
    flex-basis: 64px;
  }

  .period-task-card {
    min-height: 138px;
  }

  .theme-card,
  .accent-option {
    min-height: 58px;
    padding: 10px;
    border-radius: 12px;
  }

  .theme-card span {
    margin-top: 4px;
    font-size: 11px;
  }

  .icon-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .category-list {
    height: auto;
    min-height: 0;
    max-height: min(max(330px, 52vh), 418px);
  }

  .category-list-fade {
    height: 42px;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0), #fff 90%);
  }

  .category-scroll-overlay {
    min-height: 48px;
    background: #fff;
  }

  .category-scroll-overlay span {
    font-size: 14px;
  }

  .category-scroll-overlay strong {
    font-size: 12px;
  }

  .calendar-visibility-field {
    grid-template-columns: 1fr;
  }

  .modal {
    padding: 20px;
  }

  .day-sheet {
    width: 100%;
  }

  .day-sheet-event {
    grid-template-columns: 34px 1fr;
  }

  .day-sheet-body {
    grid-template-columns: 1fr;
  }

  .day-sheet-body > .day-homework-content,
  .day-sheet-body > .day-sheet-actions {
    grid-column: 1 / -1;
  }

  .day-sheet-body > .day-sheet-actions {
    gap: 6px;
    justify-self: end;
    margin-top: 10px;
  }

  .day-sheet-actions .modal-action-button {
    padding-inline: 9px;
  }

  .homework-content-header {
    align-items: center;
    flex-direction: row;
    flex-wrap: wrap;
  }

  .homework-content-header > div {
    justify-content: flex-start;
  }

  .homework-content-header .modal-action-button {
    flex: 0 1 auto;
    white-space: nowrap;
  }

  .copy-menu-backdrop {
    background: rgba(31, 39, 35, 0.22);
  }

  .copy-menu {
    top: auto;
    left: 0;
    right: 0;
    bottom: 0;
    width: 100%;
    max-width: none;
    padding: 10px 18px 22px;
    border-width: 1px 0 0;
    border-radius: 22px 22px 0 0;
    box-shadow: 0 -18px 50px rgba(39, 64, 68, 0.16);
  }

  .copy-menu .sheet-handle {
    display: block;
  }

  .copy-menu-option {
    min-height: 46px;
  }
}

@media (max-width: 767px) {
  body[data-active-tab="month"] {
    overflow: hidden;
  }

  body[data-active-tab="month"] .app-shell {
    height: 100dvh;
    min-height: 0;
    padding-bottom: 18px;
    display: flex;
    flex-direction: column;
  }

  body[data-active-tab="month"] main,
  #monthView.is-active {
    flex: 1 1 auto;
    min-height: 0;
    display: flex;
    flex-direction: column;
  }

  #monthView .month-calendar {
    flex: 1 1 auto;
    height: auto;
    min-height: auto;
    grid-template-rows: 22px repeat(6, minmax(0, 1fr));
    margin-bottom: 0;
  }

  #monthView .month-day {
    min-height: 0;
    height: auto;
    padding: 2px 4px 3px;
  }

  #monthView .date-number {
    margin-bottom: 1px;
    transform: translateY(-1px);
  }

  #monthView .month-events {
    display: grid;
    grid-template-columns: repeat(2, 18px);
    grid-auto-rows: 18px;
    align-content: start;
    gap: 3px 4px;
    max-height: 63px;
    overflow: hidden;
  }

  #monthView .event-chip {
    margin: 0;
  }
}

@media (max-width: 360px) {
  .homework-card-masonry {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 430px) {
  .day-sheet-body {
    grid-template-columns: 1fr;
  }

  .day-sheet-body > .day-homework-content,
  .day-sheet-body > .day-sheet-actions {
    grid-column: 1 / -1;
  }

  .day-sheet-body > .day-sheet-actions {
    justify-self: end;
    margin-top: 10px;
  }

  .icon-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.print-month-button {
  min-height: 34px;
  padding-inline: 13px;
}

.print-preview-backdrop {
  background: rgba(31, 39, 35, 0.46);
}

.print-preview-modal {
  width: min(980px, 100%);
  padding: 18px;
}

.print-preview-toolbar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  margin: 0 0 14px;
}

.print-color-note {
  margin: 0 auto 0 0;
  color: #5f6b72;
  font-size: 12px;
  line-height: 1.4;
}

.print-page {
  width: 189mm;
  min-height: 273mm;
  margin: 0 auto;
  padding: 0;
  background: #fff;
  color: #1f2937;
  box-shadow: 0 18px 50px rgba(31, 39, 35, 0.18);
  -webkit-print-color-adjust: exact;
  print-color-adjust: exact;
}

.print-month-title {
  margin: 0 0 3mm;
  color: #1f2937;
  font-size: 15px;
  font-weight: 700;
  line-height: 6mm;
  text-align: center;
}

.print-month-calendar {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  grid-template-rows: 7mm repeat(var(--print-week-count), minmax(0, 1fr));
  height: var(--print-calendar-height, 259mm);
  border: 0.5pt solid #cfdadd;
  background: #fff;
  overflow: hidden;
}

.print-weekday {
  display: grid;
  place-items: center;
  border: 0 solid #cfdadd;
  border-right-width: 0.5pt;
  border-bottom-width: 0.5pt;
  background: #f6f8f8;
  color: #374151;
  font-size: 10px;
  font-weight: 700;
  line-height: 1;
}

.print-month-day {
  min-width: 0;
  min-height: 0;
  padding: 1.2mm 1.2mm 1mm;
  border: 0 solid #cfdadd;
  border-right-width: 0.5pt;
  border-bottom-width: 0.5pt;
  background: #fff;
  overflow: hidden;
  -webkit-print-color-adjust: exact;
  print-color-adjust: exact;
}

.print-month-calendar > :nth-child(7n) {
  border-right-width: 0;
}

.print-month-calendar > :nth-last-child(-n + 7) {
  border-bottom-width: 0;
}

.print-month-day.has-date-background {
  background: var(--print-day-bg);
}

.print-month-day.is-muted {
  color: #9aa3a7;
  background-color: #fbfcfc;
}

.print-month-day.is-muted.has-date-background {
  background: var(--print-day-bg);
}

.print-date-number {
  margin-bottom: 0.8mm;
  color: #1f2937;
  font-size: 10px;
  font-weight: 700;
  line-height: 1;
}

.print-month-day.is-muted .print-date-number {
  color: #9aa3a7;
}

.print-event-list {
  display: grid;
  gap: 0.85mm;
}

.print-event-item {
  min-width: 0;
  padding: 1.1mm 0.86mm;
  border: 0.4pt solid var(--print-event-border);
  border-radius: 1.2mm;
  background: var(--print-event-bg);
  break-inside: avoid;
  -webkit-print-color-adjust: exact;
  print-color-adjust: exact;
}

.print-event-heading {
  display: flex;
  flex-wrap: nowrap;
  align-items: baseline;
  gap: 0 0.34mm;
  min-width: 0;
  color: #1f2937;
  font-size: 6.35pt;
  font-weight: 600;
  line-height: 1.12;
}

.print-event-heading strong {
  flex: 0 0 auto;
  max-width: 100%;
  min-width: max-content;
  font-weight: 600;
  overflow-wrap: normal;
  word-break: keep-all;
  white-space: nowrap;
}

.print-event-time {
  flex: 1 0 auto;
  margin-left: 0;
  color: #5f6b72;
  font-size: 5.65pt;
  font-weight: 400;
  line-height: 1.08;
  text-align: right;
  white-space: nowrap;
}

.print-content-list {
  display: grid;
  gap: 0.2mm;
  margin: 0.95mm 0 0;
  padding-left: 7px;
  list-style: none;
  color: #1f2937;
  font-size: 6pt;
  font-weight: 400;
  line-height: 1.2;
}

.print-content-list li {
  min-width: 0;
  overflow-wrap: anywhere;
}

.print-content-list small {
  display: block;
  color: #4b5563;
  font-size: 6pt;
  line-height: 1.1;
}

.print-month-day.is-print-dense {
  padding: 1mm 1mm 0.8mm;
}

.print-month-day.is-print-dense .print-date-number {
  margin-bottom: 0.55mm;
}

.print-month-day.is-print-dense .print-event-list {
  gap: 0.72mm;
}

.print-month-day.is-print-dense .print-event-item {
  padding: 0.86mm 0.76mm;
  border-radius: 1mm;
}

.print-month-day.is-print-dense .print-event-heading {
  gap: 0 0.28mm;
  line-height: 1.08;
}

.print-month-day.is-print-dense .print-event-time {
  line-height: 1.05;
}

.print-month-day.is-print-dense .print-content-list {
  gap: 0.16mm;
  margin-top: 0.74mm;
  line-height: 1.18;
}

.print-month-day.is-print-packed {
  padding: 0.8mm 0.85mm 0.7mm;
}

.print-month-day.is-print-packed .print-date-number {
  margin-bottom: 0.4mm;
}

.print-month-day.is-print-packed .print-event-list {
  gap: 0.62mm;
}

.print-month-day.is-print-packed .print-event-item {
  padding: 0.7mm 0.68mm;
}

.print-month-day.is-print-packed .print-event-heading {
  line-height: 1.06;
}

.print-month-day.is-print-packed .print-event-time {
  line-height: 1.04;
}

.print-month-day.is-print-packed .print-content-list {
  margin-top: 0.58mm;
  line-height: 1.16;
}

@media print {
  @page {
    size: A4 portrait;
    margin: 12mm 10.5mm;
  }

  html,
  body {
    width: 189mm;
    min-height: 273mm;
    margin: 0;
    background: #fff;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  body.is-month-printing * {
    visibility: hidden;
  }

  body.is-month-printing #monthPrintPage,
  body.is-month-printing #monthPrintPage * {
    visibility: visible;
  }

  body.is-month-printing #monthPrintPage {
    position: absolute;
    inset: 0 auto auto 0;
    width: 189mm;
    min-height: 0;
    box-shadow: none;
  }

  body.is-month-printing .print-preview-actions {
    display: none !important;
  }

  body.is-month-printing .print-preview-backdrop,
  body.is-month-printing .print-preview-modal {
    position: static;
    display: block !important;
    padding: 0;
    background: transparent;
    box-shadow: none;
    overflow: visible;
  }

  .print-month-calendar {
    height: var(--print-calendar-height, 259mm);
  }

  .week-event-homework-content {
    display: block;
    margin-top: 4px;
    padding-top: 4px;
    border-top: 1px solid rgba(31, 41, 55, 0.2);
    font-size: 10px;
    line-height: 1.3;
  }

  .week-event-homework-content ul {
    margin: 0;
    padding-left: 1.1em;
  }

  .week-event-homework-content small {
    display: block;
    color: #4b5563;
  }
}

@media (min-width: 768px) {
  .month-calendar {
    height: calc(100vh - 146px);
    grid-template-rows: 42px repeat(6, minmax(0, 1fr));
  }
}