/*
 * Paslot shared UI system.
 * This file is loaded after page styles so shared component behavior wins while
 * page styles remain responsible for timetable geometry and feature layout.
 */

html {
    background: var(--color-background);
    color-scheme: light;
}

body {
    background: var(--color-background);
    color: var(--color-ink);
    font-size: var(--font-size-md);
    line-height: 1.5;
    text-rendering: optimizeLegibility;
}

button,
input,
select,
textarea {
    letter-spacing: 0;
}

a {
    border-bottom: 0;
    color: var(--color-accent);
    text-decoration: none;
}

a:hover {
    background: transparent;
    border-color: transparent;
    color: var(--color-accent-dark);
}

.auth__links a,
.auth p a,
.dashboard-notice a,
.settings-version a {
    text-decoration: underline;
    text-decoration-thickness: 1px;
    text-underline-offset: 0.18em;
}

h1,
h2,
h3,
h4 {
    color: var(--color-ink);
    letter-spacing: 0;
}

small {
    color: var(--color-muted);
    font-size: var(--font-size-xs);
}

:where(a, button, input, select, textarea, summary, [tabindex]):focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

input:not([type="checkbox"]):not([type="radio"]):not([type="hidden"]),
select,
textarea {
    background: var(--color-surface);
    border: 1px solid var(--color-line-strong);
    border-radius: 6px;
    color: var(--color-ink);
    min-height: var(--control-height);
    padding: 9px 11px;
}

input:not([type="checkbox"]):not([type="radio"]):not([type="hidden"]):hover,
select:hover,
textarea:hover {
    border-color: var(--color-line);
}

input:not([type="checkbox"]):not([type="radio"]):not([type="hidden"]):focus,
select:focus,
textarea:focus {
    border-color: var(--color-accent);
    box-shadow: var(--focus-ring);
    outline: 0;
}

input:disabled,
select:disabled,
textarea:disabled {
    background: var(--color-surface-muted);
    color: var(--color-disabled);
    cursor: not-allowed;
}

input[type="checkbox"],
input[type="radio"] {
    accent-color: var(--color-accent);
}

.button {
    background: var(--color-accent);
    border: 1px solid var(--color-accent);
    border-radius: 6px;
    box-shadow: none;
    color: var(--color-on-accent);
    gap: var(--space-2);
    letter-spacing: 0;
    line-height: 1.3;
    min-height: var(--control-height);
    padding: 9px 14px;
    transition: background-color 120ms ease, border-color 120ms ease, color 120ms ease;
    width: auto;
}

.button:hover {
    background: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
    color: var(--color-on-accent);
}

.button:focus-visible {
    box-shadow: var(--focus-ring);
    outline: 0;
}

.button--secondary {
    background: var(--color-surface);
    border-color: var(--color-line-strong);
    color: var(--color-accent);
}

.button--secondary:hover {
    background: var(--color-accent-soft);
    border-color: var(--color-accent);
    color: var(--color-accent-dark);
}

.button:disabled,
.button[aria-disabled="true"] {
    background: var(--color-surface-muted);
    border-color: var(--color-line);
    color: var(--color-disabled);
    opacity: 1;
}

.settings-danger__button,
.slot-memo-modal__delete {
    background: var(--color-surface);
    border-color: var(--color-error-line);
    color: var(--color-error-text);
}

.settings-danger__button:hover,
.slot-memo-modal__delete:hover {
    background: var(--color-error-bg);
    border-color: var(--color-error-text);
    color: var(--color-error-text);
}

.card {
    background: var(--color-paper);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    box-shadow: none;
    margin-bottom: var(--space-4);
    overflow: visible;
    padding: var(--space-4);
}

.card .card {
    border-inline: 0;
    border-radius: 0;
    box-shadow: none;
    padding-inline: 0;
}

.layout__container {
    max-width: 1100px;
    padding: var(--space-6) var(--space-4) var(--space-8);
}

.site-header {
    background: var(--color-paper);
    border-bottom: 1px solid var(--color-line);
    box-shadow: none;
}

.site-header__inner {
    gap: var(--space-4);
    min-height: 60px;
    padding: var(--space-2) var(--space-4);
}

.site-header h1 {
    font-size: var(--font-size-lg);
    letter-spacing: 0;
}

.site-nav--header {
    gap: var(--space-1);
}

.site-nav--header .site-nav__link {
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    color: var(--color-muted);
    min-height: var(--control-height);
    padding: 7px 10px;
}

.site-nav--header .site-nav__link:hover {
    background: var(--color-cream);
    color: var(--color-ink);
}

.site-nav--header .site-nav__link.is-active {
    background: var(--color-accent-soft);
    border-color: transparent;
    color: var(--color-accent-dark);
}

.site-nav--header .site-nav__link--dashboard.is-active {
    color: var(--color-accent);
}

.app-shell-loading-indicator__panel,
.dashboard-notice-popover__panel {
    background: var(--color-paper);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-floating);
    color: var(--color-ink);
    gap: var(--space-2);
}

.flash {
    align-items: center;
    border-radius: var(--radius-md);
    gap: var(--space-2);
    line-height: 1.45;
    padding: 10px 12px;
}

.flash--success {
    background: var(--color-success-bg);
    border-color: var(--color-success-line);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-floating);
    color: var(--color-success-text);
}

.flash--success .flash__icon {
    color: var(--color-success-text);
}

.flash--error {
    color: var(--color-error-text);
}

.flash--warning {
    color: var(--color-warning-text);
}

.flash--info {
    color: var(--color-info-text);
}

.release-notice__panel,
.selection-preview-modal__panel,
.slot-memo-modal__panel {
    background: var(--color-paper);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-overlay);
}

.release-notice__title,
.slot-memo-modal__title {
    color: var(--color-ink);
    letter-spacing: 0;
}

.release-notice__eyebrow,
.release-notice__body,
.slot-memo-modal__detail {
    color: var(--color-muted);
}

.release-notice__panel {
    padding: var(--space-4);
}

.release-notice__actions {
    border-top: 1px solid var(--color-line);
    padding-top: var(--space-3);
}

/* Dashboard shell and controls */
.dashboard {
    margin-bottom: var(--space-4);
}

.dashboard__head {
    align-items: center;
    border-bottom: 1px solid var(--color-line);
    flex-wrap: nowrap;
    min-height: 52px;
    padding: 0 0 var(--space-2);
}

.dashboard__head .dashboard__title {
    color: var(--color-ink);
    font-size: var(--font-size-xl);
    letter-spacing: 0;
    line-height: 1.25;
}

.dashboard__sticky-stack,
.dashboard__sticky-stack > h3,
.dashboard__sticky-stack > .dashboard-period-picker,
.dashboard__sticky-stack .dashboard-pager {
    background: var(--color-background);
}

.dashboard-tabs--mode {
    background: var(--color-surface);
    border: 1px solid var(--color-line-strong);
    border-radius: 6px;
    display: grid;
    flex: 0 0 auto;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    min-width: 204px;
    overflow: hidden;
}

.dashboard-tabs--mode .dashboard-tabs__tab {
    background: var(--color-surface);
    border: 0;
    border-radius: 0;
    color: var(--color-muted);
    font-family: var(--font-ui);
    font-size: var(--font-size-sm);
    min-height: var(--control-height);
    padding: 8px 12px;
}

.dashboard-tabs--mode .dashboard-tabs__tab + .dashboard-tabs__tab {
    border-left: 1px solid var(--color-line);
}

.dashboard-tabs--mode .dashboard-tabs__tab:hover {
    background: var(--color-cream);
    color: var(--color-ink);
}

.dashboard-tabs--mode .dashboard-tabs__tab.is-active {
    background: var(--color-accent-soft);
    border-width: 0;
    color: var(--color-accent);
}

.dashboard-tabs--mode .dashboard-tabs__tab.is-active::after {
    content: none;
}

.dashboard__period-row {
    gap: var(--space-3);
    margin-bottom: var(--space-2);
}

.dashboard-day-heading h3 {
    font-size: var(--font-size-lg);
    letter-spacing: 0;
}

.dashboard-day-heading p,
.dashboard__today-meta {
    color: var(--color-muted);
    font-size: var(--font-size-xs);
}

.dashboard-period-picker__trigger,
.dashboard-scope-switcher__trigger {
    background: var(--color-surface);
    border: 1px solid var(--color-line-strong);
    border-radius: 6px;
    color: var(--color-ink);
    gap: var(--space-2);
    min-height: var(--control-height);
}

.dashboard-period-picker__trigger:hover,
.dashboard-scope-switcher__trigger:hover {
    background: var(--color-cream);
    border-color: var(--color-line-strong);
}

.dashboard-period-picker__trigger:focus-visible,
.dashboard-scope-switcher__trigger:focus-visible {
    border-color: var(--color-accent);
    box-shadow: var(--focus-ring);
    outline: 0;
}

.dashboard-period-picker__panel,
.dashboard-scope-switcher__panel {
    background: var(--color-paper);
    border: 1px solid var(--color-line-strong);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-floating);
}

.dashboard-period-picker__group + .dashboard-period-picker__group {
    border-top: 1px solid var(--color-line);
    margin-top: var(--space-3);
    padding-top: var(--space-3);
}

.dashboard-period-picker__group-title {
    color: var(--color-ink);
}

.dashboard-period-picker__option,
.dashboard-scope-switcher__item {
    border: 1px solid var(--color-line);
    border-radius: var(--radius-sm);
    color: var(--color-ink);
    min-height: var(--control-height);
}

.dashboard-period-picker__option:hover,
.dashboard-scope-switcher__item:hover,
.dashboard-period-picker__option:focus-visible,
.dashboard-scope-switcher__item:focus-visible {
    background: var(--color-cream);
    color: var(--color-ink);
}

.dashboard-period-picker__option.is-active,
.dashboard-scope-switcher__item.is-active {
    background: var(--color-accent-soft);
    border-color: var(--color-accent);
    color: var(--color-accent-dark);
}

.dashboard-period-picker__option.is-today,
.dashboard-period-picker__option.is-today:hover,
.dashboard-period-picker__option.is-active.is-today {
    border-color: var(--color-accent);
}

.dashboard-pager {
    gap: var(--space-2);
    margin: var(--space-2) 0 var(--space-3);
}

.dashboard-pager .button {
    background: var(--color-surface);
    border-color: var(--color-line);
    color: var(--color-ink);
    min-height: var(--control-height);
    min-width: var(--control-height);
    padding: 7px 12px;
}

.dashboard-pager .button:hover {
    background: var(--color-cream);
    border-color: var(--color-line-strong);
    color: var(--color-accent-dark);
}

.dashboard-countdown {
    background: var(--color-paper);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    box-shadow: none;
    color: var(--color-ink);
}

.dashboard-notice--inline {
    color: var(--color-muted);
    font-size: var(--font-size-xs);
}

/* Timetables */
table {
    border-color: var(--color-line);
}

th,
td {
    background: var(--color-paper);
    border-color: var(--color-line);
}

.timetable th,
.selection-preview-grid th {
    background: var(--color-cream);
    color: var(--color-ink);
}

.timetable thead th::before {
    background: var(--color-line);
}

.timetable__week-head-date,
.timetable__week-head-date:hover,
.timetable__week-head-date:focus-visible,
.timetable__month-date-link {
    background: transparent;
    border: 0;
    color: inherit;
    text-decoration: none;
}

.timetable__week-head-date:focus-visible,
.timetable__month-date-link:focus-visible {
    outline-offset: 1px;
}

.timetable__slot {
    color: var(--color-ink);
    font-size: var(--font-size-sm);
    line-height: 1.4;
}

.timetable__slot > strong,
.timetable__slot-course-lines {
    color: var(--color-ink);
    font-size: var(--font-size-md);
    letter-spacing: 0;
}

.timetable__slot-meta-line,
.timetable__slot-meta-teacher-line,
.timetable__slot-meta-room-line,
.timetable__slot-self-study-rooms {
    color: var(--color-muted);
    font-size: var(--font-size-xs);
}

.timetable__slot--muted,
.timetable__slot--self-study,
.timetable__slot--no-class {
    background: var(--color-surface-muted);
    color: var(--color-muted);
}

.timetable__slot--muted strong,
.timetable__slot--muted span,
.timetable__slot-self-study-title,
.timetable__slot-no-class-text {
    color: var(--color-muted);
}

.timetable__slot--has-memo {
    box-shadow: inset 3px 0 0 var(--color-accent);
}

.timetable__slot-memo-summary {
    color: var(--color-accent-dark);
}

.timetable__week-remark-cell--today,
.timetable__day-head--today,
.timetable__day-head--today-single,
.timetable__col--today,
.timetable__col--today-single,
.timetable__row--today th,
.timetable__row--today td,
.timetable td.timetable__month-remark-cell--today:not(.timetable__col--no-class) {
    background: var(--color-accent-soft);
}

.timetable thead th.timetable__day-head--today::before,
.timetable thead th.timetable__day-head--today-single::before {
    background: var(--color-accent);
}

.dashboard-day-remark {
    align-items: center;
    background: var(--color-info-bg);
    border: 1px solid var(--color-info-line);
    color: var(--color-info-text);
    gap: var(--space-2);
    padding: 10px 12px;
}

.dashboard-day-remark > i {
    align-self: center;
    margin: 0;
}

.day-schedule {
    background: var(--color-paper);
    border-color: var(--color-line);
}

.timetable--day .day-schedule__item,
.timetable--day .day-schedule__item:last-child {
    background: var(--color-paper);
    border-color: var(--color-line);
    box-shadow: none;
}

.timetable--day .day-schedule__item.timetable__slot--self-study,
.timetable--day .day-schedule__item.timetable__slot--muted {
    background: var(--color-surface-muted);
}

.timetable--day .day-schedule__item.timetable__slot--has-memo {
    box-shadow: inset 3px 0 0 var(--color-accent);
}

.timetable--day .day-schedule__item.timetable__slot--popup:hover,
.timetable--day .day-schedule__item.timetable__slot--popup:focus-visible {
    background: var(--color-cream);
}

.timetable--day th.day-schedule__period {
    background: var(--color-cream);
    color: var(--color-ink);
    padding: 0;
    vertical-align: middle;
}

.day-schedule__period > span {
    align-items: baseline;
    display: inline-flex;
    gap: 2px;
    justify-content: center;
    line-height: 1;
}

.day-schedule__period strong {
    color: var(--color-ink);
    display: inline;
    font-size: var(--font-size-lg);
    line-height: 1;
}

.day-schedule__period small {
    color: var(--color-muted);
    display: inline;
    font-size: var(--font-size-xs);
    line-height: 1;
    margin: 0;
}

.day-schedule__content {
    justify-content: center;
}

.day-schedule__subject {
    color: var(--color-ink);
    font-size: var(--font-size-md);
    letter-spacing: 0;
}

.day-schedule__meta {
    color: var(--color-muted);
    font-size: var(--font-size-sm);
}

.day-schedule__action {
    align-items: center;
    align-self: stretch;
    color: var(--color-muted);
    justify-content: center;
}

.day-schedule__action .timetable__slot-memo-summary {
    flex: 0 0 auto;
    position: static;
    right: auto;
    top: auto;
    transform: none;
}

.day-schedule__memo {
    border-left-color: var(--color-info-line);
}

.dashboard-upcoming h3 {
    font-size: var(--font-size-md);
    letter-spacing: 0;
}

.dashboard-upcoming__item {
    border-color: var(--color-line);
    padding: 12px 4px;
}

.dashboard-upcoming__item:hover,
.dashboard-upcoming__item:focus-visible {
    background: var(--color-cream);
}

/* Memo and preview overlays */
.slot-memo-modal__backdrop,
.selection-preview-modal__backdrop,
.release-notice {
    background: rgb(var(--color-shadow-rgb) / 48%);
}

.slot-memo-modal__head,
.selection-preview-modal__head {
    border-bottom: 1px solid var(--color-line);
    min-height: 56px;
    padding: 10px 12px 10px 16px;
}

.slot-memo-modal__icon-button,
.selection-preview-modal__close,
.site-footer__nav-guide-close {
    align-items: center;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 6px;
    color: var(--color-muted);
    display: inline-flex;
    height: var(--control-height);
    justify-content: center;
    min-height: var(--control-height);
    padding: 0;
    width: var(--control-height);
}

.slot-memo-modal__icon-button:hover,
.selection-preview-modal__close:hover,
.site-footer__nav-guide-close:hover {
    background: var(--color-cream);
    border-color: var(--color-line);
    color: var(--color-ink);
}

.slot-memo-modal__form {
    gap: var(--space-3);
    padding: var(--space-4);
}

.slot-memo-modal__field {
    gap: var(--space-2);
}

.slot-memo-modal__field-head {
    color: var(--color-ink);
    gap: var(--space-2);
}

.slot-memo-modal__field input {
    margin: 0;
}

.slot-memo-modal__actions {
    background: var(--color-paper);
    border-top: 1px solid var(--color-line);
    gap: var(--space-2);
    padding-top: var(--space-3);
}

.slot-memo-modal__status[data-status="success"] {
    color: var(--color-success-text);
}

.slot-memo-modal__status[data-status="warning"] {
    color: var(--color-warning-text);
}

.slot-memo-modal__status[data-status="error"] {
    color: var(--color-error-text);
}

.selection-preview-modal__tabs {
    background: var(--color-paper);
    border-bottom: 1px solid var(--color-line);
    padding: 0;
}

.selection-preview-modal__tabs button {
    background: transparent;
    border: 0;
    border-bottom: 2px solid transparent;
    border-radius: 0;
    color: var(--color-muted);
    min-height: var(--control-height);
}

.selection-preview-modal__tabs button:hover {
    background: var(--color-cream);
    color: var(--color-ink);
}

.selection-preview-modal__tabs button.is-active {
    background: transparent;
    border-bottom-color: var(--color-accent);
    color: var(--color-accent-dark);
}

.selection-preview-modal__body {
    background: var(--color-paper);
}

.selection-preview-grid {
    background: var(--color-paper);
}

.selection-preview-grid th,
.selection-preview-grid td {
    border-color: var(--color-line);
}

.selection-preview-grid thead th,
.selection-preview-grid thead th:first-child,
.selection-preview-grid tbody th {
    background: var(--color-cream);
    color: var(--color-ink);
}

.selection-preview-grid__slot strong {
    color: var(--color-ink);
}

.selection-preview-grid__slot small {
    color: var(--color-muted);
}

/* Subject selection */
.selection-groups {
    border-color: var(--color-line);
}

.selection-group {
    border-color: var(--color-line);
}

.selection-group > summary {
    min-height: 56px;
    padding: 8px 4px;
}

.selection-group > summary:hover {
    background: var(--color-cream);
}

.selection-group > summary > span:first-child {
    color: var(--color-ink);
    font-size: var(--font-size-md);
    letter-spacing: 0;
}

.selection-group__count,
.selection-group.has-selection .selection-group__count {
    background: transparent;
    border-radius: 0;
    color: var(--color-muted);
    font-size: var(--font-size-xs);
    height: auto;
    min-width: 0;
    padding: 0;
}

.selection-group__body {
    gap: var(--space-3);
    padding-bottom: var(--space-4);
}

.selection-items {
    gap: var(--space-2);
}

.selection__item,
.selection__item:hover,
.selection__item.is-selected {
    align-items: center;
    background: var(--color-surface);
    border: 1px solid var(--color-line);
    border-radius: 6px;
    box-shadow: none;
    gap: 10px;
    min-height: 60px;
    padding: 9px 10px;
}

.selection__item:hover {
    background: var(--color-cream);
    border-color: var(--color-line-strong);
}

.selection__item.is-selected {
    background: var(--color-surface);
    border-color: var(--color-accent);
    box-shadow: inset 3px 0 0 var(--color-accent);
}

.selection__control {
    accent-color: var(--color-accent);
    background-color: var(--color-surface);
    flex: 0 0 auto;
    height: 18px;
    margin: 0;
    opacity: 1;
    padding: 0;
    pointer-events: auto;
    position: static;
    width: 18px;
}

.selection__control[type="radio"] {
    appearance: auto;
    background: var(--color-surface);
    border: 0;
    box-shadow: 0 0 0 2px var(--color-surface);
}

.selection__copy {
    align-content: center;
    align-self: center;
    gap: 2px;
    justify-content: start;
    text-align: left;
}

.selection__copy strong {
    color: var(--color-ink);
    font-size: var(--font-size-md);
    letter-spacing: 0;
}

.selection__copy small {
    color: var(--color-muted);
    font-size: var(--font-size-sm);
    margin: 0;
}

.selection-exclusive-group {
    border-top: 1px solid var(--color-line);
}

.selection-exclusive-group__actions button {
    border-radius: var(--radius-sm);
    color: var(--color-muted);
}

.selection-exclusive-group__actions button:hover {
    background: var(--color-cream);
}

.selection-actions {
    background: var(--color-paper);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-floating);
    padding: var(--space-2);
}

.selection-actions .button {
    box-shadow: none;
    margin: 0;
    min-height: var(--control-height);
}

/* Settings */
.settings-page {
    padding-bottom: var(--space-6);
}

.settings-categories,
.settings-category {
    border-color: var(--color-line);
}

.settings-category > summary {
    gap: var(--space-3);
    grid-template-columns: 32px minmax(0, 1fr) minmax(0, auto) 20px;
    min-height: 64px;
    padding: 8px 4px;
}

.settings-category > summary:hover {
    background: var(--color-cream);
}

.settings-category__icon {
    background: transparent;
    border: 0;
    border-radius: var(--radius-sm);
    color: var(--color-muted);
    height: 32px;
    width: 32px;
}

.settings-category__title {
    color: var(--color-ink);
    font-size: var(--font-size-md);
    letter-spacing: 0;
}

.settings-category__status {
    color: var(--color-muted);
    font-size: var(--font-size-xs);
}

.settings-category__body {
    padding: 4px 4px 24px 48px;
}

.settings-subsection {
    padding: 4px 0 20px;
}

.settings-subsection + .settings-subsection {
    border-color: var(--color-line);
    padding-top: 20px;
}

.settings-subsection__head {
    color: var(--color-ink);
    gap: var(--space-2);
    margin-bottom: var(--space-3);
}

.settings-subsection__head > i {
    color: var(--color-muted);
}

.settings-subsection__head h3 {
    color: var(--color-ink);
    font-size: var(--font-size-sm);
    letter-spacing: 0;
}

.settings-account-info > div,
.settings-account-info > div:nth-child(even),
.settings-account-info > div:nth-child(odd) {
    border-color: var(--color-line);
}

.settings-account-info dt,
.settings-info-card__label {
    color: var(--color-muted);
    font-size: var(--font-size-xs);
}

.settings-account-info dd,
.settings-info-card__value {
    color: var(--color-ink);
}

.settings-command-row {
    display: grid;
    gap: var(--space-2);
    grid-template-columns: repeat(3, minmax(0, 1fr));
    padding: var(--space-4) 0;
}

.settings-command-row .button,
.settings-command-row .settings-logout,
.settings-command-row .settings-logout .button {
    margin: 0;
    min-width: 0;
    width: 100%;
}

.settings-command-row .button {
    justify-content: center;
    white-space: nowrap;
}

.settings-danger {
    border-color: var(--color-error-line);
    gap: var(--space-3);
    padding-top: var(--space-4);
}

.settings-danger h4,
.settings-danger p {
    color: var(--color-error-text);
}

.settings-notification-list {
    border-color: var(--color-line);
}

.settings-notification-row {
    border-color: var(--color-line);
    min-height: 64px;
    padding: 12px 0;
}

.settings-notification-row__label strong {
    color: var(--color-ink);
    font-size: var(--font-size-sm);
}

.settings-notification-row__label small {
    color: var(--color-muted);
    margin: 0;
}

.settings-toggle > span {
    background: var(--color-control-track);
}

.settings-toggle input:focus-visible + span {
    box-shadow: var(--focus-ring);
    outline: 0;
}

.settings-notification-time select,
.notification-settings select {
    margin-bottom: 0;
}

.settings-info-grid {
    border-top: 1px solid var(--color-line);
    gap: 0;
    margin-bottom: var(--space-4);
}

.settings-info-card {
    background: transparent;
    border: 0;
    border-bottom: 1px solid var(--color-line);
    border-radius: 0;
    gap: var(--space-1);
    padding: 11px 2px;
}

.settings-info-card:nth-child(odd):not(.settings-info-card--wide) {
    padding-right: var(--space-4);
}

.settings-info-card:nth-child(even) {
    border-left: 1px solid var(--color-line);
    padding-left: var(--space-4);
}

.api-token-copy {
    background: var(--color-surface);
    border: 1px solid var(--color-line-strong);
    border-radius: 6px;
    color: var(--color-accent);
    height: var(--control-height);
    min-height: var(--control-height);
    width: var(--control-height);
}

.api-token-copy:hover {
    background: var(--color-accent-soft);
    border-color: var(--color-accent);
}

.settings-history-disclosure,
.settings-history__entry {
    border-color: var(--color-line);
}

.settings-history-disclosure > summary {
    min-height: var(--control-height);
}

.settings-history__entry strong {
    color: var(--color-ink);
}

.settings-shortcuts {
    gap: var(--space-2);
}

.settings-link-list,
.settings-link-list a {
    border-color: var(--color-line);
}

.settings-link-list a {
    color: var(--color-ink);
    min-height: 52px;
    padding: 8px 4px;
}

.settings-link-list a:hover {
    background: var(--color-cream);
    color: var(--color-accent-dark);
}

.settings-page-footer {
    margin-top: var(--space-6);
}

.settings-version {
    color: var(--color-muted);
    font-size: var(--font-size-xs);
}

/* Authentication and offline pages */
.auth {
    max-width: 680px;
}

.auth h2 {
    color: var(--color-ink);
    font-size: var(--font-size-lg);
    letter-spacing: 0;
    margin-bottom: var(--space-2);
}

.auth p {
    color: var(--color-muted);
    line-height: 1.6;
}

.auth__panel,
.auth--index .auth__panel {
    background: var(--color-paper);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    box-shadow: none;
    padding: var(--space-6);
}

.auth__form {
    gap: var(--space-3);
    margin-top: var(--space-3);
}

.auth__form label {
    color: var(--color-ink);
    font-size: var(--font-size-sm);
}

.auth__form input {
    border-color: var(--color-line-strong);
    border-radius: 6px;
    margin: 0;
    min-height: var(--control-height);
}

.auth__form input:focus {
    border-color: var(--color-accent);
    box-shadow: var(--focus-ring);
}

.auth__help {
    color: var(--color-muted);
    font-size: var(--font-size-xs);
}

.auth__actions {
    gap: var(--space-2);
    margin-top: var(--space-2);
}

.offline-dashboard__heading {
    border-color: var(--color-line);
}

.offline-dashboard__heading h2,
.offline-empty h2 {
    color: var(--color-ink);
    font-size: var(--font-size-lg);
    letter-spacing: 0;
}

.offline-status {
    background: var(--color-muted);
    border-radius: var(--radius-sm);
}

.offline-dashboard__message,
.offline-dashboard__footer p,
.offline-empty p {
    color: var(--color-muted);
}

.offline-empty {
    background: var(--color-paper);
    border: 1px solid var(--color-line);
    border-radius: var(--radius-md);
    box-shadow: none;
}

/* Tour UI is rendered by a third-party component with inline priorities. */
.paslot-tour-dialog,
.tg-dialog.paslot-tour-dialog {
    background: var(--color-paper) !important;
    border: 1px solid var(--color-line) !important;
    border-radius: var(--radius-md) !important;
    box-shadow: var(--shadow-overlay) !important;
    color: var(--color-ink) !important;
}
.paslot-tour-dialog .tg-dialog-header {
    align-items: center !important;
}

.paslot-tour-dialog .tg-dialog-title {
    min-width: 0 !important;
    padding-right: 0 !important;
}


.paslot-tour-dialog .tg-dialog-title,
.paslot-tour-dialog .tg-dialog-header h1,
.paslot-tour-dialog .tg-dialog-header h2,
.paslot-tour-dialog .tg-dialog-header h3 {
    color: var(--color-ink) !important;
    letter-spacing: 0 !important;
}

.paslot-tour-dialog .tg-dialog-body,
.paslot-tour-dialog .tg-dialog-content {
    color: var(--color-muted) !important;
}

.paslot-tour-dialog .tg-dialog-btn,
.paslot-tour-dialog button:not(.tg-dialog-close-btn):not(.tg-dialog-close) {
    border-radius: 6px !important;
    min-height: var(--control-height) !important;
}

.paslot-tour-dialog .tg-dialog-close-btn,
.paslot-tour-dialog .tg-dialog-close,
.paslot-tour-dialog button[aria-label="Close"],
.paslot-tour-dialog button[aria-label="閉じる"] {
    background: transparent !important;
    border: 1px solid transparent !important;
    border-radius: 6px !important;
    color: var(--color-muted) !important;
    flex: 0 0 32px !important;
    height: 32px !important;
    margin-left: auto !important;
    min-height: 32px !important;
    min-width: 32px !important;
    position: static !important;
    right: auto !important;
    top: auto !important;
    width: 32px !important;
}

.paslot-tour-dialog .tg-dialog-close-btn svg,
.paslot-tour-dialog .tg-dialog-close svg {
    color: inherit !important;
    fill: currentColor !important;
}

.paslot-tour-dialog .tg-dialog-close-btn svg path,
.paslot-tour-dialog .tg-dialog-close svg path {
    fill: currentColor !important;
}

.paslot-tour-dialog .tg-arrow {
    background: var(--color-paper) !important;
}

.paslot-tour-dialog .tg-dialog-spinner {
    color: var(--color-muted) !important;
}

.paslot-tour-dialog .tg-dialog-spinner svg {
    fill: currentColor !important;
    stroke: currentColor !important;
}

/* Mobile application shell */
@media (max-width: 640px) {
    .layout__container {
        padding: 12px 8px calc(116px + env(safe-area-inset-bottom));
    }

    .dashboard {
        padding-inline: 0;
    }

    .card {
        border-radius: var(--radius-md);
        padding: var(--space-3);
    }

    .button {
        width: auto;
    }

    .site-footer {
        background: var(--color-surface-glass);
        border-top: 1px solid var(--color-line);
        box-shadow: 0 -4px 14px rgb(var(--color-shadow-rgb) / 7%);
        bottom: 0;
        box-sizing: border-box;
        display: block;
        left: 0;
        min-height: 74px;
        padding: 4px calc(8px + env(safe-area-inset-right)) calc(32px + env(safe-area-inset-bottom)) calc(8px + env(safe-area-inset-left));
        position: fixed;
        right: 0;
        z-index: 130;
    }

    .site-nav--footer {
        gap: 0;
    }

    .site-nav--footer .site-nav__link {
        background: transparent;
        border-radius: var(--radius-sm);
        color: var(--color-muted);
        font-size: 0.68rem;
        gap: 4px;
        min-height: 54px;
        padding: 5px 2px;
    }

    .site-nav--footer .site-nav__link i {
        color: inherit;
        font-size: 1.08rem;
    }

    .site-nav--footer .site-nav__link:hover {
        background: var(--color-cream);
        color: var(--color-ink);
    }

    .site-nav--footer .site-nav__link.is-active {
        background: transparent;
        color: var(--color-accent-dark);
    }

    .site-nav--footer .site-nav__link--dashboard.is-active {
        color: var(--color-accent);
    }

    .site-footer__cat-button {
        background: var(--color-paper);
        border: 1px solid var(--color-line-strong);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-floating);
        color: var(--color-ink);
        right: calc(-28px + var(--cat-pull, 0px));
    }

    .site-footer__cat-button:hover {
        background: var(--color-cream);
        box-shadow: var(--shadow-floating);
        color: var(--color-accent-dark);
        transform: none;
    }

    .site-footer__cat-button::before {
        background: var(--color-muted);
        border-radius: 2px;
    }

    .site-footer__cat-callout {
        background: var(--color-ink);
        border-radius: var(--radius-sm);
        box-shadow: var(--shadow-floating);
        color: var(--color-paper);
        letter-spacing: 0;
    }

    .site-footer__cat-callout::after {
        background: var(--color-ink);
    }

    .site-footer__tour-menu,
    .site-footer__nav-guide {
        background: var(--color-paper);
        border: 1px solid var(--color-line);
        border-radius: var(--radius-md);
        box-shadow: var(--shadow-overlay);
        color: var(--color-ink);
    }

    .site-footer__tour-menu::after,
    .site-footer__nav-guide::after {
        background: var(--color-paper);
        border-color: var(--color-line);
    }

    .site-footer__tour-menu-title,
    .site-footer__nav-guide-title {
        color: var(--color-ink);
        letter-spacing: 0;
    }

    .site-footer__tour-menu-message,
    .site-footer__nav-guide-body {
        color: var(--color-muted);
    }

    .site-footer__tour-option {
        background: var(--color-surface);
        border: 1px solid var(--color-line);
        border-radius: 6px;
        color: var(--color-ink);
        min-height: var(--control-height);
    }

    .site-footer__tour-option:hover,
    .site-footer__tour-option:focus-visible {
        background: var(--color-cream);
        border-color: var(--color-line-strong);
    }

    .dashboard__head {
        align-items: stretch;
        flex-wrap: wrap;
        gap: var(--space-2);
    }

    .dashboard__head .dashboard__title {
        flex: 0 0 100%;
        font-size: var(--font-size-lg);
        white-space: nowrap;
    }

    .dashboard-tabs--mode {
        flex: 0 0 100%;
        min-width: 0;
        width: 100%;
    }

    .dashboard-tabs--mode .dashboard-tabs__tab {
        font-size: 0.88rem;
        padding-inline: 8px;
        white-space: nowrap;
    }

    .dashboard__period-row {
        align-items: center;
        gap: var(--space-2);
    }

    .dashboard-period-picker__trigger,
    .dashboard-scope-switcher__trigger {
        min-height: var(--control-height);
    }

    .dashboard-scope-switcher {
        min-width: 112px;
    }

    .dashboard-day-layout {
        gap: var(--space-6);
    }

    .timetable--day th.day-schedule__period {
        width: 50px;
    }

    .timetable--day .day-schedule__item,
    .timetable--day .day-schedule__item:last-child {
        height: auto;
        min-height: 78px;
    }

    .timetable--day .day-schedule__content {
        min-height: 78px;
        padding: 11px 40px 11px 12px;
    }

    .timetable--day .day-schedule__action {
        width: 38px;
    }

    .day-schedule__subject {
        font-size: var(--font-size-md);
    }

    .day-schedule__meta {
        font-size: 0.8rem;
    }

    .slot-memo-modal {
        align-items: flex-end;
        padding: 0;
    }

    .slot-memo-modal__panel {
        border-bottom: 0;
        border-radius: 8px 8px 0 0;
        height: 50dvh;
        max-height: 50dvh;
        max-width: none;
        width: 100%;
    }

    .slot-memo-modal__form {
        padding: 14px 16px calc(14px + env(safe-area-inset-bottom));
    }

    .selection-preview-modal {
        align-items: flex-end;
        padding: 0;
    }

    .selection-preview-modal__panel {
        border-bottom: 0;
        border-radius: 8px 8px 0 0;
        height: 86dvh;
        max-height: 86dvh;
        min-height: 0;
    }

    .selection-preview-modal__body {
        padding: 0;
    }

    .selection-preview-grid {
        font-size: var(--font-size-xs);
        min-width: 100%;
    }

    .selection-preview-grid th,
    .selection-preview-grid td {
        padding: 6px 4px;
    }

    .dashboard--selection {
        padding-bottom: calc(154px + env(safe-area-inset-bottom));
    }

    .selection-actions {
        border: 0;
        border-radius: 0;
        border-top: 1px solid var(--color-line);
        bottom: calc(90px + env(safe-area-inset-bottom));
        box-shadow: 0 -4px 14px rgb(var(--color-shadow-rgb) / 8%);
        gap: var(--space-2);
        grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr);
        left: 0;
        padding: 8px max(8px, env(safe-area-inset-right)) 8px max(8px, env(safe-area-inset-left));
        right: 0;
        transform: none;
    }

    .selection-actions .button {
        font-size: 0.8rem;
        min-width: 0;
        padding-inline: 8px;
        width: 100%;
    }

    .selection__item,
    .selection__item:hover,
    .selection__item.is-selected {
        min-height: 58px;
    }

    .settings-category > summary {
        gap: var(--space-2);
        grid-template-columns: 32px minmax(0, 1fr) minmax(0, auto) 16px;
        padding-inline: 0;
    }

    .settings-category__body {
        padding: 4px 0 20px;
    }

    .settings-account-info {
        grid-template-columns: minmax(0, 1fr);
    }

    .settings-account-info > div:nth-child(even),
    .settings-account-info > div:nth-child(odd) {
        border-left: 0;
        padding-inline: 0;
    }

    .settings-command-row {
        gap: 4px;
        grid-template-columns: minmax(0, 1.15fr) minmax(0, 1.15fr) minmax(0, 0.9fr);
    }

    .settings-command-row .button,
    .settings-command-row .settings-logout,
    .settings-command-row .settings-logout .button {
        width: 100%;
    }

    .settings-command-row .button {
        font-size: 0.875rem;
        gap: 4px;
        padding-inline: 2px;
    }

    .settings-info-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .settings-info-card:nth-child(odd):not(.settings-info-card--wide),
    .settings-info-card:nth-child(even) {
        border-left: 0;
        padding-inline: 2px;
    }

    .auth {
        margin-inline: auto;
    }

    .auth__panel,
    .auth--index .auth__panel {
        border-radius: var(--radius-md);
        padding: var(--space-4);
    }

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

    .auth__actions .button,
    .offline-dashboard__footer .button,
    .offline-empty .button {
        width: 100%;
    }

    .offline-page .layout__container {
        padding-bottom: calc(24px + env(safe-area-inset-bottom));
    }
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}