:root {
  color-scheme: light;
  --color-background: #f4f6f8;
  --color-surface: #ffffff;
  --color-surface-muted: #f8fafc;
  --color-text: #1f2933;
  --color-text-muted: #667085;
  --color-border: #dfe4ea;
  --color-primary: #2457d6;
  --color-primary-soft: #eaf0ff;
  --color-focus: #123c9b;
  --shadow-soft: 0 10px 30px rgb(31 41 51 / 8%);
  --radius-large: 18px;
  --radius-medium: 12px;
  font-family:
    Inter, "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--color-text);
  background: var(--color-background);
}

a {
  color: inherit;
}

.app-header {
  position: sticky;
  z-index: 10;
  top: 0;
  border-bottom: 1px solid var(--color-border);
  background: rgb(255 255 255 / 94%);
  backdrop-filter: blur(12px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1080px, calc(100% - 40px));
  min-height: 72px;
  margin: 0 auto;
  gap: 32px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
}

.brand-mark {
  display: grid;
  width: 38px;
  height: 38px;
  place-items: center;
  border-radius: 11px;
  color: #ffffff;
  background: var(--color-primary);
  font-size: 0.82rem;
  font-weight: 800;
  letter-spacing: 0.04em;
}

.brand strong,
.brand small {
  display: block;
}

.brand strong {
  font-size: 0.98rem;
}

.brand small {
  margin-top: 2px;
  color: var(--color-text-muted);
  font-size: 0.74rem;
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 6px;
}

.main-nav a {
  padding: 9px 14px;
  border-radius: 9px;
  color: var(--color-text-muted);
  font-size: 0.92rem;
  font-weight: 600;
  text-decoration: none;
}

.main-nav a:hover {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

.main-nav a[aria-current="page"] {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

.main-nav a:focus-visible,
.brand:focus-visible {
  outline: 3px solid rgb(36 87 214 / 28%);
  outline-offset: 2px;
}

.app-main {
  width: min(920px, calc(100% - 40px));
  margin: 0 auto;
  padding: 64px 0 80px;
}

.app-status {
  width: min(920px, calc(100% - 40px));
  margin: 24px auto -32px;
  padding: 14px 16px;
  border: 1px solid #f1b4b4;
  border-radius: var(--radius-medium);
  color: #8d2020;
  background: #fff1f1;
  line-height: 1.6;
}

.pwa-update-notice {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(920px, calc(100% - 40px));
  margin: 20px auto -20px;
  padding: 14px 16px;
  border: 1px solid #aebff0;
  border-radius: var(--radius-medium);
  color: var(--color-text);
  background: var(--color-primary-soft);
  box-shadow: var(--shadow-soft);
  gap: 18px;
}

.pwa-update-notice[hidden],
.pwa-install-button[hidden] {
  display: none;
}

.pwa-update-notice div {
  display: grid;
  gap: 3px;
}

.pwa-update-notice span {
  color: var(--color-text-muted);
  font-size: 0.84rem;
  line-height: 1.5;
}

.pwa-update-notice button:focus-visible,
.pwa-install-button:focus-visible {
  outline: 3px solid rgb(36 87 214 / 28%);
  outline-offset: 2px;
}

.view[hidden] {
  display: none;
}

.page-heading {
  max-width: 680px;
  margin-bottom: 32px;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--color-primary);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.page-heading h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.035em;
}

.page-heading > p:last-child {
  margin: 14px 0 0;
  color: var(--color-text-muted);
  font-size: 1rem;
  line-height: 1.75;
}

.empty-state {
  display: grid;
  min-height: 300px;
  padding: 52px 32px;
  place-items: center;
  align-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
  text-align: center;
}

.empty-icon {
  display: grid;
  width: 52px;
  height: 52px;
  margin-bottom: 18px;
  place-items: center;
  border-radius: 50%;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  font-size: 1.5rem;
  font-weight: 700;
}

.empty-state h2 {
  margin: 0;
  font-size: 1.2rem;
}

.empty-state p {
  max-width: 440px;
  margin: 10px 0 0;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.course-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.85fr) minmax(320px, 1.15fr);
  align-items: start;
  gap: 24px;
}

.course-form,
.course-collection {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.course-form {
  display: grid;
  padding: 28px;
  gap: 18px;
}

.course-form h2,
.collection-heading h2 {
  margin: 4px 0 0;
  font-size: 1.2rem;
}

.course-form > div > p:last-child {
  margin: 8px 0 0;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.section-label {
  margin: 0;
  color: var(--color-primary);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.today-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.78fr) minmax(380px, 1.22fr);
  align-items: start;
  gap: 24px;
}

.task-quick-form,
.queue-section {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.task-quick-form {
  display: grid;
  padding: 28px;
  gap: 18px;
}

.task-quick-form h2,
.queue-heading h2 {
  margin: 4px 0 0;
  font-size: 1.2rem;
}

.task-quick-form > div:first-child > p:last-child {
  margin: 8px 0 0;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.task-form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.task-form-grid label {
  display: grid;
  gap: 7px;
  color: var(--color-text);
  font-size: 0.84rem;
  font-weight: 700;
}

.task-title-field {
  grid-column: 1 / -1;
}

.task-form-grid input,
.task-form-grid select,
.task-reschedule-form input {
  min-width: 0;
  width: 100%;
  padding: 10px 11px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  background: var(--color-surface);
  font: inherit;
}

.task-form-grid input:focus,
.task-form-grid select:focus,
.task-reschedule-form input:focus {
  border-color: var(--color-primary);
  outline: 3px solid rgb(36 87 214 / 16%);
}

.task-form-grid input:disabled,
.task-form-grid select:disabled,
.task-quick-form button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

.form-help {
  min-height: 1.35em;
  margin: -8px 0 0;
  color: var(--color-text-muted);
  font-size: 0.82rem;
}

.today-queue {
  display: grid;
  min-width: 0;
  gap: 18px;
}

.today-review-summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border: 1px solid #cbd8fb;
  border-radius: var(--radius-medium);
  color: var(--color-text);
  background: var(--color-primary-soft);
  gap: 18px;
  text-decoration: none;
}

.today-review-summary:hover {
  border-color: var(--color-primary);
}

.today-review-summary > span:first-child {
  display: grid;
  gap: 4px;
}

.today-review-summary strong {
  font-size: 1rem;
}

.today-review-summary small {
  color: var(--color-text-muted);
  font-size: 0.78rem;
}

.today-review-summary > span:last-child {
  flex: 0 0 auto;
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 800;
}

.today-session-summary {
  border-color: #c9ddd1;
  background: #f1f8f4;
}

.today-reward-summary {
  border-color: #ded2f2;
  background: #f8f4ff;
}

.today-reward-summary > span:last-child {
  color: #6f48a8;
}

.today-consistency-summary {
  border-color: #d9dfbd;
  background: #f8faef;
}

.today-consistency-summary > span:last-child {
  color: #5d7529;
}

.today-stats-link,
.stats-entry-link {
  width: fit-content;
  color: var(--color-primary);
  font-size: 0.84rem;
  font-weight: 700;
  text-decoration: none;
}

.today-stats-link {
  justify-self: end;
  margin-top: -8px;
}

.today-stats-link:hover,
.stats-entry-link:hover {
  text-decoration: underline;
}

.today-action-error {
  margin: 0;
  padding: 12px 14px;
  border: 1px solid #f1b4b4;
  border-radius: 10px;
  background: #fff1f1;
}

.queue-section {
  padding: 24px;
}

.queue-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  gap: 16px;
}

.queue-heading > span,
.upcoming-section summary > span:last-child {
  flex: 0 0 auto;
  color: var(--color-text-muted);
  font-size: 0.82rem;
}

.task-queue-empty {
  padding: 22px 18px;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-medium);
  color: var(--color-text-muted);
  background: var(--color-surface-muted);
  text-align: center;
}

.task-queue-empty p {
  margin: 0;
  font-size: 0.86rem;
}

.task-list {
  display: grid;
  margin: 0;
  padding: 0;
  gap: 10px;
  list-style: none;
}

.task-list > li {
  padding: 15px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface-muted);
}

.task-card-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.task-card-summary {
  display: grid;
  min-width: 0;
  gap: 8px;
}

.task-card-summary > strong {
  overflow-wrap: anywhere;
  line-height: 1.45;
}

.task-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 10px;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  line-height: 1.45;
}

.task-course-link {
  color: var(--color-primary);
  font-weight: 700;
  text-decoration: none;
}

.task-course-link:hover {
  text-decoration: underline;
}

.task-priority {
  font-weight: 700;
}

.task-priority-high {
  color: #9d2929;
}

.task-priority-low {
  color: #4f6378;
}

.task-actions {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  gap: 7px;
}

.primary-small-button {
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid var(--color-primary);
  border-radius: 8px;
  color: #ffffff;
  background: var(--color-primary);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
}

.primary-small-button:hover {
  background: var(--color-focus);
}

.task-reschedule-form {
  display: flex;
  align-items: end;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
  gap: 8px;
}

.task-reschedule-form label {
  display: grid;
  flex: 1 1 180px;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 700;
}

.upcoming-section {
  padding: 0;
}

.upcoming-section summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 22px 24px;
  gap: 16px;
  cursor: pointer;
  list-style-position: inside;
}

.upcoming-section summary > span:first-child {
  display: inline-grid;
  margin-right: auto;
  gap: 4px;
}

.upcoming-section summary strong {
  font-size: 1rem;
}

.upcoming-section summary small {
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-weight: 400;
}

.upcoming-content {
  padding: 0 24px 24px;
}

.review-panel {
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.review-panel .queue-heading h2 {
  margin: 4px 0 0;
  font-size: 1.2rem;
}

.review-action-error {
  margin: 0 0 16px;
  padding: 12px 14px;
  border: 1px solid #f1b4b4;
  border-radius: 10px;
  background: #fff1f1;
}

.review-empty {
  display: grid;
  min-height: 240px;
  padding: 36px 24px;
  place-items: center;
  align-content: center;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface-muted);
  text-align: center;
}

.review-empty h3 {
  margin: 0;
  font-size: 1.05rem;
}

.review-empty p {
  margin: 8px 0 0;
  color: var(--color-text-muted);
  font-size: 0.86rem;
}

.review-list {
  display: grid;
  margin: 0;
  padding: 0;
  gap: 12px;
  list-style: none;
}

.review-item {
  padding: 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface-muted);
}

.review-item-overdue {
  border-color: #e1b0aa;
  background: #fff7f5;
}

.review-card-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 20px;
}

.review-card-summary {
  display: grid;
  min-width: 0;
  gap: 9px;
}

.review-card-summary > strong {
  overflow-wrap: anywhere;
  line-height: 1.45;
}

.review-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 11px;
  color: var(--color-text-muted);
  font-size: 0.76rem;
  line-height: 1.45;
}

.review-due-state {
  font-weight: 800;
}

.review-due-overdue {
  color: #9d2929;
}

.review-due-today {
  color: var(--color-primary);
}

.review-actions {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  gap: 7px;
}

.review-result-button {
  min-width: 64px;
}

.review-actions .review-result-again {
  border-color: #d5aaa5;
  color: #8d2929;
  background: #fff7f5;
}

.review-actions .review-result-fuzzy {
  border-color: #d8c48b;
  color: #745b11;
  background: #fffbeb;
}

.review-actions .review-result-mastered {
  border-color: var(--color-primary);
  color: #ffffff;
  background: var(--color-primary);
}

.review-actions .review-result-mastered:hover {
  background: var(--color-focus);
}

.course-task-panel {
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.course-task-panel .collection-heading h2 {
  margin: 4px 0 0;
  font-size: 1.2rem;
}

.course-task-list > li {
  background: var(--color-surface-muted);
}

.course-task-list > .course-task-item-overdue {
  border-color: #e1b0aa;
  background: #fff7f5;
  box-shadow: inset 3px 0 0 #b5483e;
}

.course-task-list > .course-task-item-today {
  border-color: #b9c8ed;
  background: #f5f8ff;
  box-shadow: inset 3px 0 0 var(--color-primary);
}

.task-date-label {
  display: inline-flex;
  align-items: center;
  padding: 3px 7px;
  border-radius: 6px;
  font-weight: 800;
}

.task-date-label-overdue {
  color: #8d2922;
  background: #f9e3df;
}

.task-date-label-today {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

.task-date-label-upcoming {
  color: #4f6378;
  background: #e9eef3;
}

.task-due-date-overdue {
  color: #8d2922;
  font-weight: 800;
}

.task-due-date-today {
  color: var(--color-primary);
  font-weight: 700;
}

.completed-task-section {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--color-border);
}

.completed-task-section summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: var(--color-text);
  cursor: pointer;
  font-size: 0.9rem;
  list-style-position: inside;
}

.completed-task-section summary strong {
  margin-right: auto;
}

.completed-task-section summary span {
  color: var(--color-text-muted);
  font-size: 0.8rem;
  font-weight: 400;
}

.completed-task-content {
  padding-top: 14px;
}

.course-task-edit-form {
  display: grid;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
  gap: 12px;
}

.course-task-edit-fields {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(110px, 0.6fr);
  gap: 10px;
}

.course-task-edit-fields label {
  display: grid;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 700;
}

.course-task-edit-fields label:last-child {
  grid-column: 1 / -1;
}

.course-task-edit-fields input,
.course-task-edit-fields select {
  min-width: 0;
  width: 100%;
  padding: 9px 10px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  background: var(--color-surface);
  font: inherit;
}

.course-task-edit-fields input:focus,
.course-task-edit-fields select:focus {
  border-color: var(--color-primary);
  outline: 3px solid rgb(36 87 214 / 16%);
}

.course-task-edit-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.course-task-edit-actions button {
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  background: var(--color-surface);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
}

.course-task-edit-actions button[type="submit"] {
  border-color: var(--color-primary);
  color: #ffffff;
  background: var(--color-primary);
}

.course-form label {
  margin-bottom: -8px;
  font-size: 0.88rem;
  font-weight: 700;
}

.form-row {
  display: flex;
  align-items: stretch;
  gap: 10px;
}

.form-row input {
  min-width: 0;
  width: 100%;
  padding: 11px 12px;
  border: 1px solid var(--color-border);
  border-radius: 9px;
  color: var(--color-text);
  background: var(--color-surface);
  font: inherit;
}

.form-row input:focus {
  border-color: var(--color-primary);
  outline: 3px solid rgb(36 87 214 / 16%);
}

.form-row button {
  flex: 0 0 auto;
  padding: 0 18px;
  border: 0;
  border-radius: 9px;
  color: #ffffff;
  background: var(--color-primary);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.form-row button:hover {
  background: var(--color-focus);
}

.form-row button:focus-visible {
  outline: 3px solid rgb(36 87 214 / 28%);
  outline-offset: 2px;
}

.form-row input:disabled,
.form-row button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

.form-error {
  margin: -6px 0 0;
  color: #a12626;
  font-size: 0.88rem;
  line-height: 1.5;
}

.course-collection {
  min-height: 356px;
  padding: 28px;
}

.collection-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  gap: 16px;
}

.collection-heading > span {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.course-group + .course-group {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

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

.course-group-heading h3 {
  margin: 0;
  font-size: 0.94rem;
}

.course-group-heading span {
  color: var(--color-text-muted);
  font-size: 0.8rem;
}

.course-empty {
  min-height: 240px;
  padding: 32px 20px;
  border-style: dashed;
  box-shadow: none;
}

.compact-empty {
  min-height: 150px;
}

.course-empty[hidden] {
  display: none;
}

.course-list {
  display: grid;
  margin: 0;
  padding: 0;
  gap: 10px;
  list-style: none;
}

.course-list li {
  padding: 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface-muted);
}

.course-card-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.course-card-summary {
  display: grid;
  min-width: 0;
  gap: 4px;
}

.course-card-summary strong {
  overflow-wrap: anywhere;
}

.course-card-summary span {
  color: var(--color-text-muted);
  font-size: 0.78rem;
}

.course-actions {
  display: flex;
  flex: 0 0 auto;
  gap: 8px;
}

.secondary-button,
.danger-button,
.inline-edit-form button {
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  background: var(--color-surface);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
}

.secondary-button:hover,
.inline-edit-form button:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.danger-button {
  color: #9d2929;
}

.danger-button:hover {
  border-color: #d99898;
  background: #fff1f1;
}

.inline-edit-form {
  display: flex;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
  gap: 8px;
}

.inline-edit-form[hidden] {
  display: none;
}

.inline-edit-form input {
  min-width: 0;
  width: 100%;
  padding: 9px 10px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  background: var(--color-surface);
  font: inherit;
}

.inline-edit-form input:focus {
  border-color: var(--color-primary);
  outline: 3px solid rgb(36 87 214 / 16%);
}

.inline-edit-form button[type="submit"] {
  border-color: var(--color-primary);
  color: #ffffff;
  background: var(--color-primary);
}

.link-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.back-link {
  display: inline-block;
  margin-bottom: 20px;
  color: var(--color-primary);
  font-size: 0.88rem;
  font-weight: 700;
  text-decoration: none;
}

.back-link:hover {
  text-decoration: underline;
}

.course-detail-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
}

.course-detail-heading .page-heading {
  margin-bottom: 28px;
}

.course-detail-controls {
  display: flex;
  align-items: center;
  padding-top: 30px;
  gap: 10px;
}

.status-badge {
  display: inline-flex;
  min-height: 34px;
  align-items: center;
  padding: 0 12px;
  border-radius: 999px;
  color: #245034;
  background: #eaf7ee;
  font-size: 0.8rem;
  font-weight: 800;
}

.status-badge[data-status="archived"] {
  color: var(--color-text-muted);
  background: #edf0f3;
}

.detail-action-error {
  margin: -14px 0 24px;
}

.course-detail-missing {
  min-height: 280px;
}

.course-detail-content {
  display: grid;
  gap: 24px;
}

.mastery-panel,
.topic-form,
.read-only-notice,
.topic-collection {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.mastery-panel,
.topic-collection {
  padding: 28px;
}

.mastery-summary {
  display: grid;
  margin: 0;
  padding: 0;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  list-style: none;
}

.mastery-summary li {
  display: grid;
  min-width: 0;
  padding: 14px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-surface-muted);
  gap: 8px;
}

.mastery-summary span {
  color: var(--color-text-muted);
  font-size: 0.78rem;
  line-height: 1.45;
}

.mastery-summary strong {
  font-size: 1rem;
}

.summary-note {
  margin: 14px 0 0;
  color: var(--color-text-muted);
  font-size: 0.8rem;
}

.topic-layout {
  display: grid;
  grid-template-columns: minmax(250px, 0.78fr) minmax(360px, 1.22fr);
  align-items: start;
  gap: 24px;
}

.topic-sidebar {
  min-width: 0;
}

.topic-form,
.read-only-notice {
  display: grid;
  padding: 28px;
  gap: 14px;
}

.topic-form h2,
.read-only-notice h2,
.topic-collection .collection-heading h2,
.mastery-panel .collection-heading h2 {
  margin: 4px 0 0;
  font-size: 1.2rem;
}

.topic-form > div > p:last-child,
.read-only-notice > p:last-child {
  margin: 8px 0 0;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.topic-form label,
.topic-edit-form label {
  font-size: 0.84rem;
  font-weight: 700;
}

.topic-form input,
.topic-edit-form input,
.topic-edit-form select {
  min-width: 0;
  width: 100%;
  padding: 10px 11px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  background: var(--color-surface);
  font: inherit;
}

.topic-form input:focus,
.topic-edit-form input:focus,
.topic-edit-form select:focus {
  border-color: var(--color-primary);
  outline: 3px solid rgb(36 87 214 / 16%);
}

.primary-button {
  min-height: 42px;
  border: 0;
  border-radius: 9px;
  color: #ffffff;
  background: var(--color-primary);
  font: inherit;
  font-weight: 700;
  cursor: pointer;
}

.primary-button:hover {
  background: var(--color-focus);
}

.read-only-notice {
  border-style: dashed;
  box-shadow: none;
}

.topic-group + .topic-group {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.topic-empty {
  padding: 26px 20px;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface-muted);
  text-align: center;
}

.topic-empty h3 {
  margin: 0;
  font-size: 0.96rem;
}

.topic-empty p {
  margin: 8px 0 0;
  color: var(--color-text-muted);
  font-size: 0.84rem;
  line-height: 1.55;
}

.compact-topic-empty {
  padding-block: 20px;
}

.topic-list {
  display: grid;
  margin: 0;
  padding: 0;
  gap: 10px;
  list-style: none;
}

.topic-list > li {
  padding: 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface-muted);
}

.topic-card-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.topic-card-summary {
  display: grid;
  min-width: 0;
  gap: 9px;
}

.topic-card-summary > strong {
  overflow-wrap: anywhere;
}

.topic-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.topic-meta span {
  padding: 4px 7px;
  border-radius: 6px;
  color: var(--color-text-muted);
  background: #edf0f3;
  font-size: 0.72rem;
}

.topic-meta .mastery-chip {
  color: var(--color-primary);
  background: var(--color-primary-soft);
}

.topic-edit-form {
  display: grid;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
  gap: 12px;
}

.topic-edit-fields {
  display: grid;
  gap: 10px;
}

.topic-edit-fields label {
  display: grid;
  gap: 6px;
}

.topic-edit-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.topic-edit-actions button {
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  background: var(--color-surface);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
}

.topic-edit-actions button[type="submit"] {
  border-color: var(--color-primary);
  color: #ffffff;
  background: var(--color-primary);
}

.course-detail-content[hidden],
.course-detail-missing[hidden],
#course-detail-restore[hidden],
.status-badge[hidden],
.topic-form[hidden],
.read-only-notice[hidden],
.topic-empty[hidden],
.topic-list[hidden],
.topic-edit-form[hidden] {
  display: none;
}

.task-queue-empty[hidden],
.task-list[hidden],
.task-reschedule-form[hidden],
.course-task-edit-form[hidden],
.today-action-error[hidden],
.review-action-error[hidden],
.review-empty[hidden],
.review-list[hidden] {
  display: none;
}

.course-mistake-panel,
.course-study-panel,
.mistake-form,
.mistake-collection {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.course-mistake-panel {
  padding: 28px;
}

.course-study-panel {
  padding: 28px;
}

.course-mistake-panel .collection-heading h2,
.course-study-panel .collection-heading h2,
.mistake-form h2,
.mistake-collection .collection-heading h2 {
  margin: 4px 0 0;
  font-size: 1.2rem;
}

.course-mistake-counts {
  display: flex;
  flex-wrap: wrap;
  margin: 18px 0 14px;
  gap: 10px;
}

.course-mistake-counts span {
  padding: 8px 11px;
  border-radius: 8px;
  color: var(--color-text-muted);
  background: var(--color-surface-muted);
  font-size: 0.82rem;
}

.course-mistake-counts strong {
  margin-left: 4px;
  color: var(--color-text);
}

.course-study-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 18px 0 0;
  padding: 0;
  gap: 10px;
  list-style: none;
}

.course-study-metrics li {
  display: grid;
  padding: 13px 14px;
  border-radius: 9px;
  background: var(--color-surface-muted);
  gap: 6px;
}

.course-study-metrics span {
  color: var(--color-text-muted);
  font-size: 0.76rem;
}

.course-study-metrics strong {
  font-size: 0.94rem;
}

.course-mistake-recent {
  display: grid;
  margin: 0;
  padding: 0;
  gap: 8px;
  list-style: none;
}

.course-mistake-recent li {
  padding: 11px 13px;
  border: 1px solid var(--color-border);
  border-radius: 9px;
  background: var(--color-surface-muted);
  font-size: 0.88rem;
  font-weight: 700;
  overflow-wrap: anywhere;
}

.mistake-toolbar {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  margin-bottom: 18px;
  gap: 10px;
}

.mistake-toolbar label {
  color: var(--color-text-muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.mistake-toolbar select {
  min-width: 220px;
  padding: 9px 11px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  background: var(--color-surface);
  font: inherit;
}

.mistake-layout {
  display: grid;
  grid-template-columns: minmax(300px, 0.82fr) minmax(420px, 1.18fr);
  align-items: start;
  gap: 24px;
}

.mistake-sidebar {
  min-width: 0;
}

.mistake-form {
  display: grid;
  padding: 28px;
  gap: 13px;
}

.mistake-form > div:first-child > p:last-child {
  margin: 8px 0 0;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.mistake-form label,
.mistake-edit-form label {
  display: grid;
  gap: 6px;
  font-size: 0.84rem;
  font-weight: 700;
}

.mistake-form input,
.mistake-form select,
.mistake-form textarea,
.mistake-edit-form input,
.mistake-edit-form select,
.mistake-edit-form textarea {
  min-width: 0;
  width: 100%;
  padding: 10px 11px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  background: var(--color-surface);
  font: inherit;
  line-height: 1.5;
}

.mistake-form textarea,
.mistake-edit-form textarea {
  resize: vertical;
}

.mistake-form input:focus,
.mistake-form select:focus,
.mistake-form textarea:focus,
.mistake-edit-form input:focus,
.mistake-edit-form select:focus,
.mistake-edit-form textarea:focus,
.mistake-toolbar select:focus {
  border-color: var(--color-primary);
  outline: 3px solid rgb(36 87 214 / 16%);
}

.mistake-form input:disabled,
.mistake-form select:disabled,
.mistake-form textarea:disabled,
.mistake-form button:disabled {
  color: var(--color-text-muted);
  background: #edf0f3;
  cursor: not-allowed;
}

.mistake-collection {
  min-width: 0;
  padding: 28px;
}

.mistake-action-error {
  margin: 0 0 16px;
}

.mistake-group {
  margin-top: 18px;
}

.mistake-empty {
  display: grid;
  min-height: 190px;
  padding: 28px 20px;
  place-items: center;
  align-content: center;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface-muted);
  text-align: center;
}

.mistake-empty h3 {
  margin: 0;
  font-size: 0.96rem;
}

.mistake-empty p {
  margin: 8px 0 0;
  color: var(--color-text-muted);
  font-size: 0.84rem;
  line-height: 1.55;
}

.compact-mistake-empty {
  min-height: 0;
  padding-block: 20px;
}

.mistake-list {
  display: grid;
  margin: 0;
  padding: 0;
  gap: 10px;
  list-style: none;
}

.mistake-list > li {
  padding: 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface-muted);
}

.mistake-card-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.mistake-card-summary {
  display: grid;
  min-width: 0;
  gap: 9px;
}

.mistake-card-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.mistake-card-heading > strong {
  overflow-wrap: anywhere;
}

.mistake-state,
.review-type-badge {
  padding: 4px 7px;
  border-radius: 6px;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  font-size: 0.7rem;
  font-weight: 800;
}

.mistake-state-resolved {
  color: #245034;
  background: #eaf7ee;
}

.mistake-state-archived {
  color: var(--color-text-muted);
  background: #e5e8eb;
}

.mistake-question-summary {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.85rem;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.mistake-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  color: var(--color-text-muted);
  font-size: 0.73rem;
  line-height: 1.5;
}

.mistake-read-only-label,
.mistake-archived-topic,
.review-archived-topic {
  color: #8b5f16;
  font-weight: 700;
}

.mistake-actions {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 7px;
}

.mistake-edit-form {
  display: grid;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
  gap: 11px;
}

.mistake-edit-course {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.8rem;
  font-weight: 700;
}

.mistake-edit-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.mistake-edit-actions button {
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  background: var(--color-surface);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
}

.mistake-edit-actions button[type="submit"] {
  border-color: var(--color-primary);
  color: #ffffff;
  background: var(--color-primary);
}

.mistake-history-section {
  margin-top: 20px;
  border-top: 1px solid var(--color-border);
}

.mistake-history-section summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 2px 14px;
  cursor: pointer;
}

.mistake-history-section summary span {
  color: var(--color-text-muted);
  font-size: 0.78rem;
}

.mistake-history-content {
  padding-bottom: 4px;
}

.review-mistake-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.review-question {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.7;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.review-answer {
  display: grid;
  margin-top: 4px;
  padding: 14px;
  border-left: 3px solid var(--color-primary);
  border-radius: 8px;
  background: var(--color-surface);
  gap: 7px;
}

.review-answer strong:not(:first-child) {
  margin-top: 8px;
}

.review-answer p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.86rem;
  line-height: 1.7;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.course-mistake-recent[hidden],
.mistake-empty[hidden],
.mistake-list[hidden],
.mistake-edit-form[hidden],
.mistake-action-error[hidden],
#mistake-form-error[hidden] {
  display: none;
}

.session-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin: 0 0 24px;
  padding: 0;
  gap: 14px;
  list-style: none;
}

.stats-entry-link {
  display: inline-block;
  margin: -18px 0 24px;
}

.stats-overview {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0 0 24px;
  padding: 0;
  gap: 12px;
  list-style: none;
}

.stats-overview li {
  display: grid;
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
  gap: 7px;
}

.stats-overview span {
  color: var(--color-text-muted);
  font-size: 0.78rem;
}

.stats-overview strong {
  color: var(--color-primary);
  font-size: 1.08rem;
  overflow-wrap: anywhere;
}

.stats-reward-panel {
  margin-bottom: 24px;
  border-color: #ded2f2;
  background: #fbf9ff;
}

.stats-reward-level {
  flex: 0 0 auto;
  color: #6f48a8;
  font-size: 1.05rem;
}

.stats-reward-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.stats-reward-metrics > div {
  display: grid;
  padding: 14px 16px;
  border: 1px solid #e3daf3;
  border-radius: 10px;
  background: var(--color-surface);
  gap: 6px;
}

.stats-reward-metrics span {
  color: var(--color-text-muted);
  font-size: 0.78rem;
}

.stats-reward-metrics strong {
  color: var(--color-text);
  font-size: 1rem;
}

.stats-reward-progress {
  height: 8px;
  margin-top: 16px;
  border-radius: 999px;
  background: #e8e1f3;
  overflow: hidden;
}

.stats-reward-progress > span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: #7952b3;
}

.stats-reward-note {
  margin: 14px 0 0;
  color: var(--color-text-muted);
  font-size: 0.8rem;
  line-height: 1.6;
}

.stats-consistency-panel {
  margin-bottom: 24px;
  border-color: #d9dfbd;
  background: #fbfcf6;
}

.stats-consistency-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.stats-consistency-metrics > div {
  display: grid;
  padding: 14px 16px;
  border: 1px solid #e1e5cf;
  border-radius: 10px;
  background: var(--color-surface);
  gap: 6px;
}

.stats-consistency-metrics span {
  color: var(--color-text-muted);
  font-size: 0.78rem;
}

.stats-consistency-metrics strong {
  color: var(--color-text);
  font-size: 1rem;
}

.stats-consistency-note {
  margin: 14px 0 0;
  color: var(--color-text-muted);
  font-size: 0.8rem;
  line-height: 1.6;
}

.stats-empty {
  display: grid;
  min-height: 300px;
  padding: 44px 28px;
  place-items: center;
  align-content: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
  text-align: center;
}

.stats-empty h2,
.stats-empty p {
  margin: 0;
}

.stats-empty p {
  max-width: 480px;
  margin-top: 10px;
  color: var(--color-text-muted);
  line-height: 1.65;
}

.stats-empty .link-button {
  margin-top: 20px;
  padding: 0 16px;
}

.stats-details {
  display: grid;
  gap: 24px;
}

.stats-panel {
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.stats-panel .collection-heading h2 {
  margin: 4px 0 0;
  font-size: 1.2rem;
}

.daily-study-list,
.course-study-list {
  display: grid;
  margin: 18px 0 0;
  padding: 0;
  gap: 11px;
  list-style: none;
}

.daily-study-list > li,
.course-study-list > li {
  display: grid;
  padding: 14px 16px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-surface-muted);
  gap: 10px;
}

.study-list-heading {
  display: grid;
  grid-template-columns: minmax(110px, 1fr) auto auto;
  align-items: center;
  gap: 14px;
}

.study-list-heading span,
.course-study-card-metrics {
  color: var(--color-text-muted);
  font-size: 0.78rem;
}

.study-list-minutes {
  min-width: 104px;
  color: var(--color-text) !important;
  font-weight: 700;
  text-align: right;
}

.study-bar-track {
  height: 8px;
  border-radius: 999px;
  background: #e7ebf3;
  overflow: hidden;
}

.study-bar-value {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: var(--color-primary);
}

.course-study-heading,
.course-study-name,
.course-study-card-metrics {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
}

.course-study-heading {
  justify-content: space-between;
  gap: 12px;
}

.course-study-name,
.course-study-card-metrics {
  gap: 8px 14px;
}

.course-study-name strong {
  overflow-wrap: anywhere;
}

.course-study-status {
  padding: 3px 7px;
  border-radius: 6px;
  color: #245034;
  background: #eaf7ee;
  font-size: 0.7rem;
  font-weight: 800;
}

.course-study-status[data-status="archived"] {
  color: var(--color-text-muted);
  background: #e4e8ed;
}

.stats-empty[hidden],
.stats-details[hidden] {
  display: none;
}

.rewards-heading {
  max-width: 720px;
}

.rewards-wallet {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0 0 24px;
  gap: 12px;
}

.rewards-wallet > div {
  display: grid;
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
  gap: 7px;
}

.rewards-wallet dt {
  color: var(--color-text-muted);
  font-size: 0.78rem;
}

.rewards-wallet dd {
  margin: 0;
  color: var(--color-primary);
  font-size: 1.08rem;
  font-weight: 800;
  overflow-wrap: anywhere;
}

.rewards-wallet > .rewards-debt {
  grid-column: 1 / -1;
  border-color: #efb8b8;
  background: #fff7f7;
}

.rewards-debt dd {
  color: #9d2929;
}

.rewards-debt[hidden],
.rewards-notice[hidden],
.rewards-error[hidden],
.rewards-empty[hidden],
.shop-grid[hidden],
.gacha-result[hidden],
.gacha-prize-grid[hidden],
.reward-management-list[hidden],
.reward-history-list[hidden] {
  display: none;
}

.rewards-notice,
.rewards-error {
  margin: 0 0 20px;
  padding: 13px 15px;
  border-radius: 10px;
  font-size: 0.88rem;
  line-height: 1.55;
}

.rewards-notice {
  border: 1px solid #9cccad;
  color: #245034;
  background: #eff9f2;
}

.rewards-error {
  border: 1px solid #f1b4b4;
  color: #8d2020;
  background: #fff1f1;
}

.rewards-sections {
  display: grid;
  gap: 24px;
}

.rewards-panel {
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.rewards-section-heading {
  margin-bottom: 8px;
}

.rewards-section-heading h2 {
  margin: 4px 0 0;
  font-size: 1.2rem;
}

.rewards-panel-note {
  margin: 0 0 20px;
  color: var(--color-text-muted);
  font-size: 0.82rem;
  line-height: 1.6;
}

.rewards-empty,
.rewards-placeholder {
  padding: 28px 20px;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface-muted);
  text-align: center;
}

.rewards-empty h3,
.rewards-empty p,
.rewards-placeholder h3,
.rewards-placeholder p {
  margin: 0;
}

.rewards-empty p,
.rewards-placeholder p {
  margin-top: 8px;
  color: var(--color-text-muted);
  font-size: 0.84rem;
  line-height: 1.6;
}

.compact-rewards-empty {
  padding-block: 18px;
}

.compact-rewards-empty p {
  margin-top: 0;
}

.shop-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  gap: 14px;
  list-style: none;
}

.shop-card {
  display: grid;
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface-muted);
  gap: 11px;
}

.shop-card-heading,
.reward-history-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.shop-card-heading h3 {
  margin: 0;
  font-size: 1rem;
  overflow-wrap: anywhere;
}

.shop-discount {
  flex: 0 0 auto;
  padding: 4px 7px;
  border-radius: 999px;
  color: #5d467e;
  background: #eee7f8;
  font-size: 0.7rem;
  font-weight: 800;
}

.shop-price-details {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.78rem;
}

.shop-card > strong {
  color: var(--color-primary);
  font-size: 1.18rem;
}

.shop-card-actions {
  display: grid;
  gap: 7px;
}

.reward-spend-button {
  width: 100%;
}

.reward-disabled-reason {
  min-height: 1.35em;
  color: var(--color-text-muted);
  font-size: 0.74rem;
  line-height: 1.45;
}

.gacha-draw-card {
  display: grid;
  padding: 22px;
  border: 1px solid #c9d5f7;
  border-radius: var(--radius-medium);
  background: linear-gradient(145deg, #f7f9ff, #f2f0fb);
  gap: 16px;
}

.gacha-draw-card h3,
.gacha-result h3,
.gacha-prize-card h4 {
  margin: 4px 0 0;
}

.gacha-probability-list {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  gap: 8px;
  list-style: none;
}

.gacha-probability-list li {
  display: grid;
  justify-items: center;
  padding: 10px 6px;
  border: 1px solid rgb(36 87 214 / 10%);
  border-radius: 10px;
  background: rgb(255 255 255 / 72%);
  gap: 6px;
}

.gacha-probability-list strong {
  font-size: 0.78rem;
}

.rarity-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  padding: 4px 8px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 900;
  line-height: 1;
  white-space: nowrap;
}

.rarity-1 {
  border-color: #c8ced8;
  color: #4f5968;
  background: #edf0f4;
}

.rarity-3 {
  border-color: #a8c8ef;
  color: #285d99;
  background: #e8f2ff;
}

.rarity-4 {
  border-color: #c8b3e8;
  color: #68449d;
  background: #f1eafd;
}

.rarity-5 {
  border-color: #e9cf80;
  color: #775610;
  background: #fff6d6;
}

.rarity-6 {
  border-color: #e8a078;
  color: #8d3e16;
  background: #fff0e7;
}

.gacha-result {
  display: grid;
  padding: 17px;
  border: 1px solid #b7c7f4;
  border-radius: 12px;
  background: var(--color-surface);
  box-shadow: 0 10px 26px rgb(36 87 214 / 10%);
  gap: 8px;
}

.gacha-result-heading,
.gacha-prize-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
}

.gacha-result p:last-child {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.78rem;
}

.gacha-prize-section {
  display: grid;
  gap: 12px;
}

.gacha-prize-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  margin: 0;
  padding: 0;
  gap: 10px;
  list-style: none;
}

.gacha-prize-card {
  display: grid;
  min-width: 0;
  padding: 14px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-surface-muted);
  gap: 11px;
}

.gacha-prize-heading h4 {
  min-width: 0;
  font-size: 0.9rem;
  overflow-wrap: anywhere;
}

.reward-management-summary .rarity-badge {
  justify-self: start;
  font-size: 0.7rem;
}

.primary-small-button:disabled,
.secondary-button:disabled,
.danger-button:disabled,
.primary-button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.reward-card-manager {
  padding-top: 9px;
  border-top: 1px solid var(--color-border);
}

.reward-card-manager > summary,
.reward-manager > summary {
  color: var(--color-primary);
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
}

.reward-manager {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}

.reward-manager-content {
  display: grid;
  margin-top: 18px;
  gap: 24px;
}

.reward-create-form,
.reward-edit-form {
  display: grid;
  padding: 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface-muted);
  gap: 15px;
}

.reward-create-form h3 {
  margin: 4px 0 0;
  font-size: 1rem;
}

.reward-form-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.reward-form-fields label {
  display: grid;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 700;
}

.reward-form-fields input,
.reward-form-fields select {
  min-width: 0;
  width: 100%;
  padding: 9px 10px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  background: var(--color-surface);
  font: inherit;
}

.reward-form-fields input:focus,
.reward-form-fields select:focus {
  border-color: var(--color-primary);
  outline: 3px solid rgb(36 87 214 / 16%);
}

.reward-form-fields input:disabled,
.reward-form-fields select:disabled {
  cursor: not-allowed;
  opacity: 0.62;
}

.reward-form-fields > .reward-checkbox-field {
  display: flex;
  grid-column: 1 / -1;
  align-items: center;
  gap: 8px;
}

.reward-checkbox-field input {
  width: auto;
}

.reward-edit-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.archived-rewards,
.reward-history-group + .reward-history-group {
  padding-top: 22px;
  border-top: 1px solid var(--color-border);
}

.reward-management-list,
.reward-history-list {
  display: grid;
  margin: 0;
  padding: 0;
  gap: 10px;
  list-style: none;
}

.reward-management-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-surface-muted);
  gap: 14px;
}

.reward-management-summary {
  display: grid;
  min-width: 0;
  gap: 5px;
}

.reward-management-summary strong {
  overflow-wrap: anywhere;
}

.reward-management-summary span:not(.rarity-badge) {
  color: var(--color-text-muted);
  font-size: 0.76rem;
}

.reward-history-group {
  margin-top: 18px;
}

.reward-history-item {
  display: grid;
  padding: 14px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-surface-muted);
  gap: 7px;
}

.reward-history-heading strong {
  overflow-wrap: anywhere;
}

.reward-history-heading span {
  flex: 0 0 auto;
  color: #9d2929;
  font-size: 0.82rem;
  font-weight: 800;
}

.reward-history-item p,
.reward-history-item time {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.76rem;
  line-height: 1.5;
}

.session-summary li {
  display: grid;
  padding: 18px 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
  gap: 7px;
}

.session-summary span {
  color: var(--color-text-muted);
  font-size: 0.8rem;
}

.session-summary strong {
  color: var(--color-primary);
  font-size: 1.15rem;
}

.session-layout {
  display: grid;
  grid-template-columns: minmax(260px, 0.78fr) minmax(390px, 1.22fr);
  align-items: start;
  gap: 24px;
}

.session-form,
.session-collection {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.session-form {
  display: grid;
  padding: 28px;
  gap: 14px;
}

.session-form h2 {
  margin: 4px 0 0;
  font-size: 1.2rem;
}

.session-form > div > p:last-child {
  margin: 8px 0 0;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.session-form label,
.session-edit-fields label {
  display: grid;
  gap: 7px;
  font-size: 0.84rem;
  font-weight: 700;
}

.session-form input,
.session-form select,
.session-form textarea,
.session-edit-fields input,
.session-edit-fields select,
.session-edit-fields textarea {
  min-width: 0;
  width: 100%;
  padding: 10px 11px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  background: var(--color-surface);
  font: inherit;
}

.session-form textarea,
.session-edit-fields textarea {
  resize: vertical;
}

.session-form input:focus,
.session-form select:focus,
.session-form textarea:focus,
.session-edit-fields input:focus,
.session-edit-fields select:focus,
.session-edit-fields textarea:focus {
  border-color: var(--color-primary);
  outline: 3px solid rgb(36 87 214 / 16%);
}

.session-form input:disabled,
.session-form select:disabled,
.session-form textarea:disabled,
.session-form button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

.session-collection {
  min-width: 0;
  padding: 28px;
}

.session-action-error {
  margin: 0 0 16px;
  padding: 12px 14px;
  border: 1px solid #f1b4b4;
  border-radius: 10px;
  background: #fff1f1;
}

.session-group + .session-group {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.session-empty {
  padding: 26px 20px;
  border: 1px dashed var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface-muted);
  text-align: center;
}

.session-empty h3 {
  margin: 0;
  font-size: 0.96rem;
}

.session-empty p {
  margin: 8px 0 0;
  color: var(--color-text-muted);
  font-size: 0.84rem;
  line-height: 1.55;
}

.compact-session-empty {
  padding-block: 20px;
}

.session-list {
  display: grid;
  margin: 0;
  padding: 0;
  gap: 10px;
  list-style: none;
}

.session-list > li {
  padding: 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface-muted);
}

.session-card-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.session-card-summary {
  display: grid;
  min-width: 0;
  gap: 8px;
}

.session-card-heading {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.session-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 11px;
  color: var(--color-text-muted);
  font-size: 0.76rem;
  line-height: 1.45;
}

.session-archived-label {
  color: #765b16;
  font-weight: 700;
}

.session-card-heading .session-archived-label {
  padding: 3px 7px;
  border-radius: 6px;
  background: #fff6d8;
  font-size: 0.72rem;
}

.session-note {
  margin: 0;
  color: var(--color-text);
  font-size: 0.84rem;
  line-height: 1.6;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.session-actions {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  gap: 7px;
}

.session-edit-form {
  display: grid;
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
  gap: 12px;
}

.session-edit-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.session-edit-fields label:last-child {
  grid-column: 1 / -1;
}

.session-edit-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.session-edit-actions button {
  min-height: 36px;
  padding: 0 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  background: var(--color-surface);
  font: inherit;
  font-size: 0.82rem;
  font-weight: 700;
  cursor: pointer;
}

.session-edit-actions button[type="submit"] {
  border-color: var(--color-primary);
  color: #ffffff;
  background: var(--color-primary);
}

.session-empty[hidden],
.session-list[hidden],
.session-edit-form[hidden],
.session-action-error[hidden],
#session-form-error[hidden] {
  display: none;
}

.week-heading {
  margin-bottom: 24px;
}

.week-notice,
.week-action-error {
  margin: 0 0 18px;
  padding: 12px 14px;
  border-radius: 10px;
  line-height: 1.55;
}

.week-notice {
  border: 1px solid #a9d0b5;
  color: #205b32;
  background: #eff9f2;
}

.week-action-error {
  border: 1px solid #f1b4b4;
  background: #fff1f1;
}

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

.week-summary > div {
  display: grid;
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
  gap: 7px;
}

.week-summary dt {
  color: var(--color-text-muted);
  font-size: 0.78rem;
}

.week-summary dd {
  margin: 0;
  color: var(--color-primary);
  font-size: 1.08rem;
  font-weight: 800;
  overflow-wrap: anywhere;
}

.week-progress {
  height: 10px;
  margin: 14px 2px 28px;
  border-radius: 999px;
  background: #dfe6f5;
  overflow: hidden;
}

.week-progress > span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--color-primary), #6388e5);
  transition: width 180ms ease-out;
}

.week-board,
.recurring-manager,
.weekly-review-panel {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.week-board {
  margin-bottom: 24px;
  padding: 28px;
}

.week-day-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  align-items: start;
  gap: 12px;
}

.week-day-column {
  min-width: 0;
  padding: 15px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface-muted);
}

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

.week-day-heading h3 {
  margin: 0;
  font-size: 0.94rem;
}

.week-day-heading time {
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-variant-numeric: tabular-nums;
}

.week-day-empty,
.week-empty {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.82rem;
  line-height: 1.6;
}

.week-day-empty {
  padding: 16px 10px;
  border: 1px dashed var(--color-border);
  border-radius: 9px;
  text-align: center;
}

.recurring-occurrence-list,
.recurring-rule-list {
  display: grid;
  margin: 0;
  padding: 0;
  gap: 9px;
  list-style: none;
}

.recurring-occurrence-item {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  min-width: 0;
  padding: 13px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-surface);
  gap: 12px;
}

.recurring-occurrence-item[data-status="completed"] {
  border-color: #cbd8cf;
  background: #f3f8f5;
}

.recurring-occurrence-item[data-status="completed"] strong {
  color: var(--color-text-muted);
  text-decoration: line-through;
}

.recurring-occurrence-summary {
  display: grid;
  min-width: 0;
  gap: 7px;
}

.recurring-occurrence-summary strong {
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.recurring-occurrence-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 5px 9px;
  color: var(--color-text-muted);
  font-size: 0.74rem;
}

.recurring-status {
  font-weight: 700;
}

.recurring-occurrence-item[data-status="completed"] .recurring-status {
  color: #37724a;
}

.week-occurrence-list .recurring-occurrence-item {
  align-items: stretch;
  flex-direction: column;
}

.week-occurrence-list .recurring-occurrence-item > button {
  align-self: flex-start;
}

.week-management-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.16fr) minmax(280px, 0.84fr);
  align-items: start;
  gap: 24px;
}

.recurring-manager,
.weekly-review-panel {
  padding: 28px;
}

.recurring-create-form,
.recurring-edit-form,
.weekly-review-form {
  display: grid;
  gap: 14px;
}

.recurring-create-form {
  margin-bottom: 28px;
  padding-bottom: 26px;
  border-bottom: 1px solid var(--color-border);
}

.recurring-create-form > label,
.recurring-form-row label,
.recurring-edit-form > label,
.weekly-review-form > label {
  display: grid;
  gap: 7px;
  font-size: 0.84rem;
  font-weight: 700;
}

.recurring-create-form input[type="text"],
.recurring-create-form input[type="date"],
.recurring-create-form select,
.recurring-edit-form input[type="text"],
.recurring-edit-form select,
.weekly-review-form textarea {
  min-width: 0;
  width: 100%;
  padding: 10px 11px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  background: var(--color-surface);
  font: inherit;
}

.weekly-review-form textarea {
  line-height: 1.6;
  resize: vertical;
}

.recurring-create-form input:focus,
.recurring-create-form select:focus,
.recurring-edit-form input:focus,
.recurring-edit-form select:focus,
.weekly-review-form textarea:focus {
  border-color: var(--color-primary);
  outline: 3px solid rgb(36 87 214 / 16%);
}

.recurring-form-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.weekday-fieldset {
  display: flex;
  flex-wrap: wrap;
  margin: 0;
  padding: 12px;
  border: 1px solid var(--color-border);
  border-radius: 9px;
  gap: 8px 12px;
}

.weekday-fieldset legend {
  padding: 0 5px;
  font-size: 0.8rem;
  font-weight: 700;
}

.weekday-fieldset label {
  display: inline-flex;
  align-items: center;
  color: var(--color-text-muted);
  font-size: 0.78rem;
  font-weight: 600;
  gap: 5px;
  cursor: pointer;
}

.weekday-fieldset input {
  margin: 0;
  accent-color: var(--color-primary);
}

.recurring-group + .recurring-group {
  margin-top: 24px;
  padding-top: 22px;
  border-top: 1px solid var(--color-border);
}

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

.recurring-group-heading h3 {
  margin: 0;
  font-size: 0.94rem;
}

.recurring-group-heading span {
  color: var(--color-text-muted);
  font-size: 0.78rem;
}

.recurring-rule-item {
  padding: 15px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface-muted);
}

.recurring-rule-item[data-status="archived"] {
  border-style: dashed;
  opacity: 0.82;
}

.recurring-rule-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
}

.recurring-rule-summary {
  display: grid;
  min-width: 0;
  gap: 6px;
}

.recurring-rule-summary strong {
  overflow-wrap: anywhere;
}

.recurring-rule-summary p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.76rem;
  line-height: 1.55;
}

.recurring-rule-actions,
.recurring-edit-actions {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  gap: 7px;
}

.recurring-edit-form {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
}

.weekly-review-panel > div > h2 {
  margin: 4px 0 0;
  font-size: 1.2rem;
}

.weekly-review-panel > div > p:last-child {
  margin: 8px 0 20px;
  color: var(--color-text-muted);
  font-size: 0.82rem;
  line-height: 1.6;
}

.week-notice[hidden],
.week-action-error[hidden],
.week-day-empty[hidden],
.week-empty[hidden],
.recurring-occurrence-list[hidden],
.recurring-rule-list[hidden],
.recurring-edit-form[hidden] {
  display: none;
}

.recurring-occurrence-item button:focus-visible,
.recurring-rule-item button:focus-visible,
.recurring-create-form button:focus-visible,
.weekly-review-form button:focus-visible,
.weekday-fieldset input:focus-visible {
  outline: 3px solid rgb(36 87 214 / 28%);
  outline-offset: 2px;
}

.project-notice,
.project-action-error {
  margin: 0 0 18px;
  padding: 12px 14px;
  border-radius: 10px;
  line-height: 1.55;
}

.project-notice {
  border: 1px solid #a9d0b5;
  color: #205b32;
  background: #eff9f2;
}

.project-action-error {
  border: 1px solid #f1b4b4;
  background: #fff1f1;
}

.project-form,
.project-collection {
  padding: 28px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.project-form {
  display: grid;
  margin-bottom: 24px;
  gap: 20px;
}

.project-form h2 {
  margin: 4px 0 0;
  font-size: 1.2rem;
}

.project-form > div:first-child > p:last-child {
  margin: 8px 0 0;
  color: var(--color-text-muted);
  font-size: 0.82rem;
  line-height: 1.6;
}

.project-form-grid,
.project-edit-fields,
.milestone-create-fields,
.milestone-edit-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.project-form-grid label,
.project-edit-fields label,
.milestone-create-fields label,
.milestone-edit-fields label {
  display: grid;
  min-width: 0;
  gap: 7px;
  font-size: 0.82rem;
  font-weight: 700;
}

.project-name-field,
.project-description-field,
.milestone-notes-field {
  grid-column: 1 / -1;
}

.project-form input,
.project-form select,
.project-form textarea,
.project-edit-form input,
.project-edit-form select,
.project-edit-form textarea,
.milestone-create-form input,
.milestone-create-form textarea,
.milestone-edit-form input,
.milestone-edit-form textarea {
  min-width: 0;
  width: 100%;
  padding: 10px 11px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  background: var(--color-surface);
  font: inherit;
}

.project-form textarea,
.project-edit-form textarea,
.milestone-create-form textarea,
.milestone-edit-form textarea {
  line-height: 1.6;
  resize: vertical;
}

.project-form input:focus,
.project-form select:focus,
.project-form textarea:focus,
.project-edit-form input:focus,
.project-edit-form select:focus,
.project-edit-form textarea:focus,
.milestone-create-form input:focus,
.milestone-create-form textarea:focus,
.milestone-edit-form input:focus,
.milestone-edit-form textarea:focus {
  border-color: var(--color-primary);
  outline: 3px solid rgb(36 87 214 / 16%);
}

.project-form > .primary-button {
  justify-self: start;
  min-width: 132px;
  padding: 0 18px;
}

.project-group + .project-group {
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
}

.project-list,
.milestone-list {
  display: grid;
  margin: 0;
  padding: 0;
  gap: 12px;
  list-style: none;
}

.project-item {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface-muted);
}

.project-item[data-status="archived"] {
  border-style: dashed;
  background: #f3f5f8;
}

.project-card-heading,
.milestone-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  min-width: 0;
  gap: 16px;
}

.project-card-summary,
.milestone-summary {
  display: grid;
  min-width: 0;
  gap: 7px;
}

.project-title {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.76rem;
  gap: 5px 12px;
}

.project-description,
.milestone-notes {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.82rem;
  line-height: 1.65;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.project-actions,
.project-edit-actions,
.milestone-actions,
.milestone-edit-actions {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  gap: 7px;
}

.project-edit-form,
.milestone-edit-form {
  display: grid;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  gap: 12px;
}

.project-progress-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 18px;
  color: var(--color-text-muted);
  font-size: 0.78rem;
  gap: 12px;
}

.project-progress-heading strong {
  color: var(--color-text);
}

.project-progress {
  height: 9px;
  margin-top: 8px;
  border-radius: 999px;
  background: #dfe6f5;
  overflow: hidden;
}

.project-progress > span {
  display: block;
  width: 0;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--color-primary), #6388e5);
  transition: width 180ms ease-out;
}

.project-milestones {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
}

.project-milestones > summary {
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 800;
  cursor: pointer;
}

.milestone-create-form {
  display: grid;
  margin: 16px 0;
  padding: 16px;
  border: 1px dashed var(--color-border);
  border-radius: 10px;
  background: var(--color-surface);
  gap: 12px;
}

.milestone-create-form > button {
  justify-self: start;
}

.milestone-item {
  padding: 14px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-surface);
}

.milestone-item[data-status="completed"] {
  border-color: #cbd8cf;
  background: #f3f8f5;
}

.milestone-item[data-status="completed"] .milestone-title {
  color: var(--color-text-muted);
  text-decoration: line-through;
}

.milestone-title {
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.milestone-meta,
.milestone-empty {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  line-height: 1.55;
}

.milestone-list {
  margin-top: 12px;
}

.milestone-empty {
  margin-top: 14px;
  padding: 16px;
  border: 1px dashed var(--color-border);
  border-radius: 9px;
  text-align: center;
}

.project-notice[hidden],
.project-action-error[hidden],
#active-project-empty[hidden],
#archived-project-empty[hidden],
.project-list[hidden],
.project-edit-form[hidden],
.milestone-list[hidden],
.milestone-empty[hidden],
.milestone-edit-form[hidden] {
  display: none;
}

.project-item button:focus-visible,
.project-milestones > summary:focus-visible,
.project-form button:focus-visible {
  outline: 3px solid rgb(36 87 214 / 28%);
  outline-offset: 2px;
}

.reminder-layout {
  display: grid;
  grid-template-columns: minmax(280px, 0.78fr) minmax(0, 1.22fr);
  align-items: start;
  gap: 24px;
}

.reminder-form,
.reminder-section,
.reminder-history-section {
  min-width: 0;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.reminder-form {
  display: grid;
  position: sticky;
  top: 96px;
  padding: 26px;
  gap: 20px;
}

.reminder-form h2 {
  margin: 4px 0 0;
  font-size: 1.2rem;
}

.reminder-form > div:first-child > p:last-child {
  margin: 8px 0 0;
  color: var(--color-text-muted);
  font-size: 0.82rem;
  line-height: 1.6;
}

.reminder-form-grid,
.reminder-edit-fields {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.reminder-form-grid label,
.reminder-edit-fields label {
  display: grid;
  min-width: 0;
  gap: 7px;
  font-size: 0.82rem;
  font-weight: 700;
}

.reminder-title-field,
.reminder-notes-field {
  grid-column: 1 / -1;
}

.reminder-form input,
.reminder-form select,
.reminder-form textarea,
.reminder-edit-form input,
.reminder-edit-form select,
.reminder-edit-form textarea {
  min-width: 0;
  width: 100%;
  padding: 10px 11px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text);
  background: var(--color-surface);
  font: inherit;
}

.reminder-form select:disabled,
.reminder-edit-form select:disabled {
  color: var(--color-text-muted);
  background: var(--color-surface-muted);
}

.reminder-form textarea,
.reminder-edit-form textarea {
  line-height: 1.6;
  resize: vertical;
}

.reminder-form input:focus,
.reminder-form select:focus,
.reminder-form textarea:focus,
.reminder-edit-form input:focus,
.reminder-edit-form select:focus,
.reminder-edit-form textarea:focus {
  border-color: var(--color-primary);
  outline: 3px solid rgb(36 87 214 / 16%);
}

.reminder-form > .primary-button {
  justify-self: start;
  min-width: 120px;
  padding: 0 18px;
}

.reminder-center {
  display: grid;
  min-width: 0;
  gap: 18px;
}

.reminder-notice,
.reminder-action-error {
  margin: 0;
  padding: 12px 14px;
  border-radius: 10px;
  line-height: 1.55;
}

.reminder-notice {
  border: 1px solid #a9d0b5;
  color: #205b32;
  background: #eff9f2;
  font-weight: 700;
}

.reminder-action-error {
  border: 1px solid #f1b4b4;
  background: #fff1f1;
}

.reminder-section {
  padding: 24px;
}

.reminder-history-section {
  padding: 0;
  overflow: hidden;
}

.reminder-history-section > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 19px 22px;
  color: var(--color-primary);
  cursor: pointer;
  gap: 12px;
}

.reminder-history-content {
  padding: 0 22px 22px;
}

.reminder-list {
  display: grid;
  margin: 16px 0 0;
  padding: 0;
  gap: 12px;
  list-style: none;
}

.reminder-item {
  min-width: 0;
  padding: 17px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface-muted);
}

.reminder-item[data-status="completed"] {
  border-color: #cbd8cf;
  background: #f3f8f5;
}

.reminder-item[data-status="archived"] {
  border-style: dashed;
  background: #f3f5f8;
}

.reminder-card-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  min-width: 0;
  gap: 16px;
}

.reminder-card-summary {
  display: grid;
  min-width: 0;
  gap: 7px;
}

.reminder-card-title {
  margin: 0;
  font-size: 1rem;
  line-height: 1.45;
  overflow-wrap: anywhere;
}

.reminder-item[data-status="completed"] .reminder-card-title {
  color: var(--color-text-muted);
  text-decoration: line-through;
}

.reminder-meta {
  display: flex;
  flex-wrap: wrap;
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.76rem;
  line-height: 1.55;
  gap: 3px;
}

.reminder-meta a {
  color: var(--color-primary);
  font-weight: 700;
  text-decoration: none;
}

.reminder-meta a:hover {
  text-decoration: underline;
}

.reminder-notes {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.82rem;
  line-height: 1.65;
  overflow-wrap: anywhere;
  white-space: pre-wrap;
}

.reminder-actions,
.reminder-edit-actions {
  display: flex;
  flex: 0 0 auto;
  flex-wrap: wrap;
  gap: 7px;
}

.reminder-edit-form {
  display: grid;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--color-border);
  gap: 12px;
}

.reminder-empty {
  margin-top: 16px;
  padding: 18px;
  border: 1px dashed var(--color-border);
  border-radius: 10px;
  color: var(--color-text-muted);
  text-align: center;
}

.reminder-empty p {
  margin: 0;
}

.reminder-notice[hidden],
.reminder-action-error[hidden],
.reminder-list[hidden],
.reminder-empty[hidden],
.reminder-edit-form[hidden] {
  display: none;
}

.reminder-item button:focus-visible,
.reminder-history-section > summary:focus-visible,
.reminder-meta a:focus-visible,
.reminder-form button:focus-visible {
  outline: 3px solid rgb(36 87 214 / 28%);
  outline-offset: 2px;
}

.pwa-settings-panel,
.data-management-panel {
  display: grid;
  padding: 30px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
  gap: 28px;
}

.settings-view {
  display: grid;
  gap: 28px;
}

.pwa-settings-panel {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
}

.pwa-settings-panel h2,
.pwa-settings-panel p {
  margin-top: 0;
}

.pwa-settings-panel > div > p:not(.section-label) {
  margin-bottom: 0;
  color: var(--color-text-muted);
  line-height: 1.65;
}

#pwa-install-status {
  margin-top: 12px;
  font-size: 0.88rem;
}

.pwa-install-button {
  white-space: nowrap;
}

.data-management-panel h2,
.data-management-panel h3,
.data-management-panel p {
  margin-top: 0;
}

.data-management-panel > div > p:last-child,
.backup-section > div > p,
.restore-confirmation > p {
  margin-bottom: 0;
  color: var(--color-text-muted);
  line-height: 1.65;
}

.backup-section {
  display: grid;
  padding-top: 26px;
  border-top: 1px solid var(--color-border);
  gap: 18px;
}

.backup-section > button,
.restore-actions button {
  justify-self: start;
}

.backup-file-field {
  display: grid;
  gap: 8px;
  font-size: 0.88rem;
  font-weight: 700;
}

.backup-file-field input {
  width: 100%;
  padding: 12px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
  background: var(--color-surface-muted);
  font: inherit;
}

.backup-file-field input:focus-visible,
.backup-section button:focus-visible,
.restore-actions button:focus-visible {
  outline: 3px solid rgb(36 87 214 / 28%);
  outline-offset: 2px;
}

.data-management-result,
.restore-confirmation {
  padding: 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface-muted);
}

.data-management-result[hidden],
.restore-confirmation[hidden],
.restore-error[hidden] {
  display: none;
}

.data-management-success,
.data-management-error {
  margin: 0;
  font-weight: 700;
}

.data-management-success {
  color: #17622e;
}

.data-management-error {
  color: #8d2020;
}

.backup-summary {
  display: grid;
  margin: 14px 0 0;
  gap: 8px;
}

.backup-summary > div {
  display: grid;
  grid-template-columns: minmax(110px, 0.35fr) minmax(0, 1fr);
  gap: 12px;
}

.backup-summary dt {
  color: var(--color-text-muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.backup-summary dd {
  min-width: 0;
  margin: 0;
  font-family: Consolas, "SFMono-Regular", monospace;
  font-size: 0.82rem;
  overflow-wrap: anywhere;
}

.restore-confirmation {
  border-color: #f1b4b4;
  background: #fff8f8;
}

.restore-actions {
  display: flex;
  margin-top: 18px;
  flex-wrap: wrap;
  gap: 10px;
}

.literature-view {
  display: grid;
  gap: 28px;
}

.literature-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  max-width: none;
  margin-bottom: 0;
  gap: 24px;
}

.literature-heading > div > p:last-child {
  max-width: 680px;
  margin: 14px 0 0;
  color: var(--color-text-muted);
  line-height: 1.75;
}

.literature-dashboard,
.literature-create-panel,
.literature-library {
  padding: 26px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-large);
  background: var(--color-surface);
  box-shadow: var(--shadow-soft);
}

.literature-count-grid {
  display: grid;
  margin: 20px 0 0;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 10px;
}

.literature-count-grid > div {
  padding: 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface-muted);
}

.literature-count-grid dt {
  color: var(--color-text-muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.literature-count-grid dd {
  margin: 5px 0 0;
  color: var(--color-primary);
  font-size: 1.55rem;
  font-weight: 800;
}

.literature-dashboard-grid {
  display: grid;
  margin-top: 24px;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.literature-dashboard-grid > section {
  min-width: 0;
  padding: 18px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
}

.literature-dashboard-grid h3 {
  margin: 0;
  font-size: 1rem;
}

.literature-dashboard-list,
.literature-list,
.literature-note-list {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
}

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

.literature-dashboard-item button {
  display: grid;
  width: 100%;
  padding: 12px;
  border: 0;
  border-radius: 10px;
  color: var(--color-text);
  background: var(--color-primary-soft);
  font: inherit;
  text-align: left;
  cursor: pointer;
  gap: 4px;
}

.literature-dashboard-item span {
  color: var(--color-text-muted);
  font-size: 0.76rem;
  line-height: 1.5;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.literature-dashboard-item > p {
  margin: 8px 4px 0;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  line-height: 1.55;
}

.literature-dashboard-item > .literature-tags,
.literature-dashboard-item > .literature-links,
.literature-dashboard-actions {
  margin: 8px 4px 0;
}

.literature-dashboard-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.literature-dashboard-actions button {
  width: auto;
  padding: 6px 9px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  font-size: 0.72rem;
}

.literature-empty {
  margin: 14px 0 0;
  color: var(--color-text-muted);
  font-size: 0.86rem;
  line-height: 1.6;
}

.literature-create-panel > summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  gap: 16px;
}

.literature-create-panel > summary span {
  color: var(--color-text-muted);
  font-size: 0.82rem;
  font-weight: 500;
}

.literature-form,
.literature-edit-form {
  display: grid;
  margin-top: 24px;
  gap: 18px;
}

.literature-form-grid,
.literature-filter-form {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.literature-form-grid label,
.literature-filter-form label,
.literature-progress-form label,
.literature-note-form label,
.literature-note-edit-form label {
  display: grid;
  min-width: 0;
  color: var(--color-text-muted);
  font-size: 0.78rem;
  font-weight: 700;
  gap: 7px;
}

.literature-form-grid input,
.literature-form-grid select,
.literature-form-grid textarea,
.literature-filter-form input,
.literature-filter-form select,
.literature-progress-form input,
.literature-note-form input,
.literature-note-form select,
.literature-note-form textarea,
.literature-note-edit-form input,
.literature-note-edit-form select,
.literature-note-edit-form textarea {
  width: 100%;
  min-width: 0;
  padding: 10px 11px;
  border: 1px solid var(--color-border);
  border-radius: 9px;
  color: var(--color-text);
  background: var(--color-surface);
  font: inherit;
}

.literature-form-grid textarea,
.literature-note-form textarea,
.literature-note-edit-form textarea {
  resize: vertical;
}

.literature-wide-field,
.literature-search-field {
  grid-column: span 2;
}

.literature-filter-form {
  margin-top: 20px;
  padding: 18px;
  border-radius: var(--radius-medium);
  background: var(--color-surface-muted);
}

.literature-list {
  display: grid;
  gap: 14px;
}

.literature-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface);
  overflow: clip;
}

.literature-card > summary {
  display: grid;
  padding: 20px;
  cursor: pointer;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px 18px;
}

.literature-card[open] > summary {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface-muted);
}

.literature-card-heading h3,
.literature-card-heading p {
  margin: 0;
}

.literature-card-heading h3 {
  font-size: 1.05rem;
  line-height: 1.4;
  overflow-wrap: anywhere;
}

.literature-card-heading p {
  margin-top: 6px;
  color: var(--color-text-muted);
  font-size: 0.8rem;
  line-height: 1.55;
}

.literature-badges,
.literature-tags,
.literature-links,
.literature-inline-actions,
.literature-card-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.literature-badges span,
.literature-tags span,
.literature-note-kind {
  padding: 4px 8px;
  border-radius: 999px;
  color: var(--color-primary);
  background: var(--color-primary-soft);
  font-size: 0.72rem;
  font-weight: 800;
}

.literature-progress-text {
  grid-column: 1 / -1;
  color: var(--color-text-muted);
  font-size: 0.8rem;
}

.literature-card-body {
  display: grid;
  padding: 22px;
  gap: 20px;
}

.literature-associations,
.literature-card-body section p {
  margin: 0;
  color: var(--color-text-muted);
  line-height: 1.7;
  white-space: pre-wrap;
}

.literature-card-body h4 {
  margin: 0 0 8px;
}

.literature-links a {
  color: var(--color-primary);
  font-size: 0.82rem;
  font-weight: 700;
}

.literature-progress-form,
.literature-note-form,
.literature-note-edit-form {
  display: grid;
  align-items: end;
  padding: 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-medium);
  background: var(--color-surface-muted);
  grid-template-columns: repeat(2, minmax(0, 1fr)) auto;
  gap: 12px;
}

.literature-note-form {
  margin: 14px 0;
}

.literature-note-content-field {
  grid-column: span 2;
}

.literature-note-list {
  display: grid;
  gap: 10px;
}

.literature-note-item {
  padding: 15px;
  border: 1px solid var(--color-border);
  border-radius: 10px;
}

.literature-note-item[data-archived="true"] {
  background: var(--color-surface-muted);
  opacity: 0.78;
}

.literature-note-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.literature-note-heading span {
  color: var(--color-text-muted);
  font-size: 0.72rem;
}

.literature-note-content {
  margin: 12px 0;
  line-height: 1.65;
  white-space: pre-wrap;
}

.literature-note-edit-form {
  margin-top: 12px;
}

.literature-notice[hidden],
.literature-action-error[hidden],
.literature-list[hidden],
.literature-dashboard-list[hidden],
.literature-empty[hidden],
.literature-edit-form[hidden],
.literature-note-edit-form[hidden] {
  display: none;
}

.literature-view button:focus-visible,
.literature-view a:focus-visible,
.literature-view input:focus-visible,
.literature-view select:focus-visible,
.literature-view textarea:focus-visible,
.literature-card > summary:focus-visible,
.literature-create-panel > summary:focus-visible {
  outline: 3px solid rgb(36 87 214 / 28%);
  outline-offset: 2px;
}

@media (max-width: 880px) {
  .header-inner {
    align-items: stretch;
    padding: 14px 0 10px;
    flex-direction: column;
    gap: 12px;
  }

  .main-nav {
    display: grid;
    width: 100%;
    min-width: 0;
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .main-nav a {
    min-width: 0;
    padding: 9px 6px;
    overflow-wrap: anywhere;
    text-align: center;
  }

  .literature-form-grid,
  .literature-filter-form {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 680px) {
  .header-inner {
    align-items: stretch;
    width: calc(100% - 28px);
    max-width: 1080px;
    padding: 14px 0 10px;
    flex-direction: column;
    gap: 12px;
  }

  .brand small {
    display: none;
  }

  .app-main {
    width: calc(100% - 28px);
    max-width: 920px;
    padding-top: 44px;
  }

  .app-status {
    width: calc(100% - 28px);
    max-width: 920px;
    margin-bottom: -20px;
  }

  .empty-state {
    min-height: 260px;
    padding: 40px 22px;
  }

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

  .literature-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .literature-dashboard,
  .literature-create-panel,
  .literature-library {
    padding: 20px;
  }

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

  .literature-dashboard-grid,
  .literature-form-grid,
  .literature-filter-form,
  .literature-progress-form,
  .literature-note-form,
  .literature-note-edit-form {
    grid-template-columns: 1fr;
  }

  .literature-wide-field,
  .literature-search-field,
  .literature-note-content-field {
    grid-column: auto;
  }

  .literature-card > summary {
    grid-template-columns: 1fr;
  }

  .literature-note-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .course-layout {
    grid-template-columns: 1fr;
  }

  .today-layout {
    grid-template-columns: 1fr;
  }

  .task-quick-form,
  .queue-section {
    padding: 22px;
  }

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

  .task-title-field {
    grid-column: auto;
  }

  .task-card-row {
    align-items: stretch;
    flex-direction: column;
  }

  .review-panel {
    padding: 22px;
  }

  .review-card-row {
    align-items: stretch;
    flex-direction: column;
  }

  .task-reschedule-form {
    align-items: stretch;
    flex-wrap: wrap;
  }

  .upcoming-section {
    padding: 0;
  }

  .course-form,
  .course-collection {
    padding: 22px;
  }

  .form-row {
    flex-direction: column;
  }

  .form-row button {
    min-height: 44px;
  }

  .course-card-row {
    align-items: stretch;
    flex-direction: column;
  }

  .course-actions {
    flex-wrap: wrap;
  }

  .inline-edit-form {
    flex-wrap: wrap;
  }

  .course-detail-heading {
    align-items: stretch;
    flex-direction: column;
    gap: 0;
  }

  .course-detail-controls {
    padding: 0 0 24px;
  }

  .mastery-panel,
  .course-task-panel,
  .course-mistake-panel,
  .course-study-panel,
  .topic-form,
  .read-only-notice,
  .topic-collection {
    padding: 22px;
  }

  .course-task-edit-fields {
    grid-template-columns: 1fr;
  }

  .course-task-edit-fields label:last-child {
    grid-column: auto;
  }

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

  .topic-layout {
    grid-template-columns: 1fr;
  }

  .mistake-toolbar {
    align-items: stretch;
    flex-direction: column;
  }

  .mistake-toolbar select {
    width: 100%;
  }

  .mistake-layout {
    grid-template-columns: 1fr;
  }

  .mistake-form,
  .mistake-collection {
    padding: 22px;
  }

  .mistake-card-row {
    align-items: stretch;
    flex-direction: column;
  }

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

  .course-study-metrics,
  .stats-overview {
    grid-template-columns: 1fr;
  }

  .stats-reward-metrics,
  .stats-consistency-metrics {
    grid-template-columns: 1fr;
  }

  .stats-panel {
    padding: 22px;
  }

  .rewards-wallet,
  .shop-grid,
  .gacha-prize-grid,
  .reward-form-fields {
    grid-template-columns: 1fr;
  }

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

  .rewards-panel {
    padding: 22px;
  }

  .reward-form-fields > .reward-checkbox-field {
    grid-column: auto;
  }

  .shop-card-heading,
  .gacha-result-heading,
  .gacha-prize-heading,
  .reward-management-item,
  .reward-history-heading {
    align-items: stretch;
    flex-direction: column;
  }

  .gacha-result-heading .rarity-badge,
  .gacha-prize-heading .rarity-badge {
    align-self: flex-start;
  }

  .study-list-heading {
    grid-template-columns: 1fr auto;
  }

  .study-list-minutes {
    grid-column: 1 / -1;
    min-width: 0;
    text-align: left;
  }

  .session-layout {
    grid-template-columns: 1fr;
  }

  .session-form,
  .session-collection {
    padding: 22px;
  }

  .session-card-row {
    align-items: stretch;
    flex-direction: column;
  }

  .session-edit-fields {
    grid-template-columns: 1fr;
  }

  .session-edit-fields label:last-child {
    grid-column: auto;
  }

  .mistake-actions {
    justify-content: flex-start;
  }

  .topic-card-row {
    align-items: stretch;
    flex-direction: column;
  }

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

  .week-board,
  .recurring-manager,
  .weekly-review-panel {
    padding: 22px;
  }

  .week-day-grid,
  .week-management-layout,
  .recurring-form-row {
    grid-template-columns: 1fr;
  }

  .recurring-occurrence-item,
  .recurring-rule-row {
    align-items: stretch;
    flex-direction: column;
  }

  .recurring-occurrence-item > button,
  .recurring-rule-actions {
    align-self: flex-start;
  }

  .project-form,
  .project-collection {
    padding: 22px;
  }

  .project-form-grid,
  .project-edit-fields,
  .milestone-create-fields,
  .milestone-edit-fields {
    grid-template-columns: 1fr;
  }

  .project-name-field,
  .project-description-field,
  .milestone-notes-field {
    grid-column: auto;
  }

  .project-card-heading,
  .milestone-row {
    align-items: stretch;
    flex-direction: column;
  }

  .project-actions,
  .milestone-actions {
    align-self: flex-start;
  }

  .reminder-layout,
  .reminder-form-grid,
  .reminder-edit-fields {
    grid-template-columns: 1fr;
  }

  .reminder-form {
    position: static;
    padding: 22px;
  }

  .reminder-title-field,
  .reminder-notes-field {
    grid-column: auto;
  }

  .reminder-section {
    padding: 22px;
  }

  .reminder-card-row {
    align-items: stretch;
    flex-direction: column;
  }

  .reminder-actions {
    align-self: flex-start;
  }

  .data-management-panel {
    padding: 22px;
  }

  .pwa-update-notice {
    align-items: stretch;
    flex-direction: column;
  }

  .pwa-update-notice button {
    align-self: flex-start;
  }

  .pwa-settings-panel {
    grid-template-columns: 1fr;
    padding: 22px;
  }

  .pwa-install-button {
    justify-self: start;
  }

  .backup-summary > div {
    grid-template-columns: 1fr;
    gap: 3px;
  }
}