:root,
html[data-theme="light"] {
    color-scheme: light;
    --wb-bg: #F8FAFC;
    --wb-surface: #FFFFFF;
    --wb-surface-subtle: #F4F6FF;
    --wb-surface-hover: #F8FAFF;
    --wb-surface-glass: rgba(255, 255, 255, 0.94);
    --wb-surface-glass-strong: rgba(255, 255, 255, 0.96);
    --wb-surface-glass-soft: rgba(255, 255, 255, 0.92);
    --wb-input-bg: #FFFFFF;
    --wb-text: #0F172A;
    --wb-text-secondary: #334155;
    --wb-text-muted: #475569;
    --wb-text-subtle: #64748B;
    --wb-border: #CBD5E1;
    --wb-border-subtle: #E2E8F0;
    --wb-border-soft: #DDE7F3;
    --wb-border-strong: #94A3B8;
    --wb-primary: #4F46E5;
    --wb-primary-hover: #4338CA;
    --wb-on-primary: #FFFFFF;
    --wb-primary-soft: #EEF2FF;
    --wb-primary-soft-text: #3730A3;
    --wb-primary-border: #C7D2FE;
    --wb-primary-border-strong: #818CF8;
    --wb-primary-tint: #DDD6FE;
    --wb-focus: #7C3AED;
    --wb-focus-border: #93C5FD;
    --wb-blue-soft: #EAF4FF;
    --wb-blue-text: #2563EB;
    --wb-blue-border: #BFDBFE;
    --wb-purple-soft: #F5EEFF;
    --wb-purple-text: #6D28D9;
    --wb-brand-mark-text: #5B5BD6;
    --wb-disabled-bg: #E2E8F0;
    --wb-disabled-text: #64748B;
    --wb-danger: #B91C1C;
    --wb-danger-bg: #FEF2F2;
    --wb-success: #166534;
    --wb-success-bg: #F0FDF4;
    --wb-warning: #92400E;
    --wb-warning-bg: #FFFBEB;
    --wb-tooltip-bg: #1E293B;
    --wb-tooltip-text: #F8FAFC;
    --wb-overlay: rgba(15, 23, 42, 0.45);
    --wb-shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.08);
    --wb-shadow-md: 0 10px 30px rgba(15, 23, 42, 0.10);
    --wb-card-shadow: 0 8px 24px rgba(91, 91, 214, 0.06);
    --wb-error-boundary-bg: #B91C1C;
    --wb-error-boundary-text: #FFFFFF;
    --wb-checkbox-border: #929292;
    --wb-brand-gradient: linear-gradient(135deg, #EAF4FF, #F5EEFF);
    --wb-hero-gradient: linear-gradient(135deg, #EAF4FF 0%, #F5EEFF 100%);
    --wb-filter-gradient: linear-gradient(135deg, #F8FBFF 0%, #FAF7FF 100%);
    --wb-avatar-gradient: linear-gradient(135deg, #BFDBFE, #DDD6FE);
}

html[data-theme="dark"] {
    color-scheme: dark;
    --wb-bg: #0B1120;
    --wb-surface: #111827;
    --wb-surface-subtle: #172033;
    --wb-surface-hover: #1E293B;
    --wb-surface-glass: rgba(17, 24, 39, 0.94);
    --wb-surface-glass-strong: rgba(17, 24, 39, 0.96);
    --wb-surface-glass-soft: rgba(17, 24, 39, 0.92);
    --wb-input-bg: #0F1B2D;
    --wb-text: #F8FAFC;
    --wb-text-secondary: #E2E8F0;
    --wb-text-muted: #CBD5E1;
    --wb-text-subtle: #94A3B8;
    --wb-border: #475569;
    --wb-border-subtle: #334155;
    --wb-border-soft: #334155;
    --wb-border-strong: #64748B;
    --wb-primary: #A5B4FC;
    --wb-primary-hover: #C7D2FE;
    --wb-on-primary: #0F172A;
    --wb-primary-soft: #252B4A;
    --wb-primary-soft-text: #C7D2FE;
    --wb-primary-border: #4C4F7A;
    --wb-primary-border-strong: #818CF8;
    --wb-primary-tint: #37305C;
    --wb-focus: #C4B5FD;
    --wb-focus-border: #A5B4FC;
    --wb-blue-soft: #172A46;
    --wb-blue-text: #93C5FD;
    --wb-blue-border: #315078;
    --wb-purple-soft: #2E2348;
    --wb-purple-text: #D8B4FE;
    --wb-brand-mark-text: #C4B5FD;
    --wb-disabled-bg: #1E293B;
    --wb-disabled-text: #94A3B8;
    --wb-danger: #FCA5A5;
    --wb-danger-bg: #3F1D2E;
    --wb-success: #86EFAC;
    --wb-success-bg: #123222;
    --wb-warning: #FCD34D;
    --wb-warning-bg: #3B2F12;
    --wb-tooltip-bg: #020617;
    --wb-tooltip-text: #F8FAFC;
    --wb-overlay: rgba(2, 6, 23, 0.70);
    --wb-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.35);
    --wb-shadow-md: 0 10px 30px rgba(0, 0, 0, 0.45);
    --wb-card-shadow: 0 8px 24px rgba(0, 0, 0, 0.28);
    --wb-error-boundary-bg: #7F1D1D;
    --wb-error-boundary-text: #F8FAFC;
    --wb-checkbox-border: #64748B;
    --wb-brand-gradient: linear-gradient(135deg, #172A46, #2E2348);
    --wb-hero-gradient: linear-gradient(135deg, #12233E 0%, #2A1F46 100%);
    --wb-filter-gradient: linear-gradient(135deg, #101C30 0%, #211A35 100%);
    --wb-avatar-gradient: linear-gradient(135deg, #1E3A5F, #3A2F64);
}

:root,
html[data-ui-style="standard"] {
    --wb-ui-sidebar-width: 248px;
    --wb-ui-header-height: 68px;
    --wb-ui-header-background: var(--wb-surface-glass, rgba(255, 255, 255, 0.94));
    --wb-ui-header-shadow: none;
    --wb-ui-header-backdrop-filter: blur(12px);
    --wb-ui-sidebar-background: var(--wb-surface, #FFFFFF);
    --wb-ui-sidebar-shadow: none;
    --wb-ui-sidebar-mobile-shadow: var(--wb-shadow-lg, 0 20px 35px rgba(15, 23, 42, 0.16));
    --wb-ui-brand-radius: 12px;
    --wb-ui-brand-background: var(--wb-brand-gradient, linear-gradient(135deg, #EAF4FF, #F5EEFF));
    --wb-ui-brand-color: var(--wb-brand-mark-text, #5B5BD6);
    --wb-ui-control-radius: 12px;
    --wb-ui-nav-radius: 12px;
    --wb-ui-link-radius: 10px;
    --wb-ui-nav-gap: 6px;
    --wb-ui-nav-height: 44px;
    --wb-ui-nav-font-weight: 600;
    --wb-ui-nav-hover-background: var(--wb-bg, #F8FAFC);
    --wb-ui-nav-hover-color: var(--wb-text, #0F172A);
    --wb-ui-nav-active-background: var(--wb-blue-soft, #EAF4FF);
    --wb-ui-nav-active-color: var(--wb-blue-text, #2563EB);
    --wb-ui-nav-active-shadow: none;
    --wb-ui-sidebar-padding: 18px;
    --wb-ui-header-padding: 0 28px;
    --wb-ui-header-padding-mobile: 0 16px;
    --wb-ui-header-padding-compact: 8px 12px;
    --wb-ui-content-max-width: 1440px;
    --wb-ui-content-padding: 32px;
    --wb-ui-content-padding-mobile: 20px 16px;
}

html[data-ui-style="modern"] {
    --wb-ui-sidebar-width: 232px;
    --wb-ui-header-height: 58px;
    --wb-ui-header-background: var(--wb-bg, #F8FAFC);
    --wb-ui-header-shadow: none;
    --wb-ui-header-backdrop-filter: none;
    --wb-ui-sidebar-background: var(--wb-bg, #F8FAFC);
    --wb-ui-sidebar-shadow: none;
    --wb-ui-sidebar-mobile-shadow: var(--wb-shadow-md, 0 10px 30px rgba(15, 23, 42, 0.10));
    --wb-ui-brand-radius: 7px;
    --wb-ui-brand-background: var(--wb-text, #0F172A);
    --wb-ui-brand-color: var(--wb-bg, #F8FAFC);
    --wb-ui-control-radius: 7px;
    --wb-ui-nav-radius: 6px;
    --wb-ui-link-radius: 6px;
    --wb-ui-nav-gap: 2px;
    --wb-ui-nav-height: 40px;
    --wb-ui-nav-font-weight: 500;
    --wb-ui-nav-hover-background: var(--wb-surface-subtle, #F4F6FF);
    --wb-ui-nav-hover-color: var(--wb-text, #0F172A);
    --wb-ui-nav-active-background: var(--wb-surface-subtle, #F4F6FF);
    --wb-ui-nav-active-color: var(--wb-text, #0F172A);
    --wb-ui-nav-active-shadow: inset 2px 0 0 var(--wb-primary, #4F46E5);
    --wb-ui-sidebar-padding: 12px 10px;
    --wb-ui-header-padding: 0 24px;
    --wb-ui-header-padding-mobile: 0 16px;
    --wb-ui-header-padding-compact: 8px 12px;
    --wb-ui-content-max-width: 1280px;
    --wb-ui-content-padding: 32px 28px;
    --wb-ui-content-padding-mobile: 24px 16px;
}

html,
body {
    min-height: 100%;
}

html {
    background: var(--wb-bg, #F8FAFC);
}

body {
    margin: 0;
    background: var(--wb-bg, #F8FAFC);
    color: var(--wb-text, #0F172A);
    font-family: "Segoe UI", "Yu Gothic UI", "Meiryo", sans-serif;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

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

/* 2026.09.25 変更 操作可能要素のポインター表示統一対応 */
:where(
    a[href],
    button:not(:disabled),
    select:not(:disabled),
    summary,
    [role="button"]:not([aria-disabled="true"]),
    [role="link"]:not([aria-disabled="true"]),
    input[type="checkbox"]:not(:disabled),
    input[type="radio"]:not(:disabled),
    label[for]) {
    cursor: pointer;
}

button:disabled,
input:disabled,
select:disabled,
textarea:disabled {
    background-color: var(--wb-disabled-bg, #E2E8F0);
    color: var(--wb-disabled-text, #64748B);
    cursor: not-allowed;
}

a {
    color: inherit;
}

/* 2026.09.25 変更 一覧再取得操作の見た目と配置統一対応 */
.page-refresh-button {
    display: inline-flex;
    min-height: 44px;
    flex: 0 0 auto;
    align-items: center;
    justify-content: center;
    gap: 0.45rem;
    padding: 0.55rem 0.85rem;
    border: 1px solid var(--wb-border);
    border-radius: 10px;
    background: var(--wb-surface);
    color: var(--wb-text);
    font: inherit;
    font-weight: 750;
    line-height: 1.2;
    cursor: pointer;
    transition:
        border-color 0.15s ease,
        background-color 0.15s ease,
        color 0.15s ease,
        transform 0.15s ease;
}

.page-refresh-button:hover:not(:disabled) {
    border-color: var(--wb-primary-border-strong);
    background: var(--wb-surface-hover);
    color: var(--wb-primary-hover);
    transform: translateY(-1px);
}

.page-refresh-button:focus-visible {
    outline: 3px solid var(--wb-focus);
    outline-offset: 2px;
}

.page-refresh-button:disabled {
    cursor: not-allowed;
    opacity: 0.58;
}

.page-refresh-button-icon {
    display: block;
    width: 1.1rem;
    height: 1.1rem;
    flex: 0 0 1.1rem;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

@media (prefers-reduced-motion: reduce) {
    .page-refresh-button {
        transition: none;
    }

    .page-refresh-button:hover:not(:disabled) {
        transform: none;
    }
}
/* 2026.09.25 変更 左メニュー開閉と各画面幅再配分のアニメーション同期対応 */
.announcements-page,
.library-page,
.profile-page,
.revision-request-detail-page,
.revision-request-list-page,
.revision-request-settings-page,
.study-history-page {
    --wb-page-content-max-width: 72rem;
}

.announcement-management-page {
    --wb-page-content-max-width: 78rem;
}

.collaboration-invitations-page,
.deck-collaboration-page,
.deck-create-page,
.deck-edit-page,
.deck-publish-page,
.deck-trash-page {
    --wb-page-content-max-width: 960px;
}

.contact-page {
    --wb-page-content-max-width: 760px;
}

.csv-import-page,
.deck-details-page,
.help-page,
.settings-page {
    --wb-page-content-max-width: 1040px;
}

.following-page,
.notifications-page,
.revision-request-page {
    --wb-page-content-max-width: 64rem;
}

.home-page {
    --wb-page-content-max-width: 1680px;
}

.moderation-case-page,
.moderation-queue-page {
    --wb-page-content-max-width: 80rem;
}

.moderation-enforcement-page,
.moderation-operations-page,
.revision-request-moderation-page {
    --wb-page-content-max-width: 76rem;
}

.session-security-page {
    --wb-page-content-max-width: 56rem;
}

.my-page {
    --wb-page-content-max-width: 1120px;
}

.search-page {
    --wb-page-content-max-width: 1400px;
}

.study-session-page {
    --wb-page-content-max-width: 900px;
}

.study-start-page {
    --wb-page-content-max-width: 860px;
}

@media (min-width: 768px) {
    .app-content :is(
        .announcements-page,
        .announcement-management-page,
        .collaboration-invitations-page,
        .contact-page,
        .csv-import-page,
        .deck-collaboration-page,
        .deck-create-page,
        .deck-details-page,
        .deck-edit-page,
        .deck-publish-page,
        .deck-trash-page,
        .following-page,
        .help-page,
        .home-page,
        .library-page,
        .moderation-case-page,
        .moderation-enforcement-page,
        .moderation-operations-page,
        .moderation-queue-page,
        .session-security-page,
        .my-page,
        .notifications-page,
        .profile-page,
        .revision-request-detail-page,
        .revision-request-list-page,
        .revision-request-moderation-page,
        .revision-request-settings-page,
        .revision-request-page,
        .search-page,
        .settings-page,
        .study-history-page,
        .study-session-page,
        .study-start-page) {
        max-width: var(--wb-page-content-max-width);
        transition: max-width var(--app-navigation-motion-duration, 0.22s) var(--app-navigation-motion-easing, ease);
    }

    html[data-navigation-desktop-open="false"] .app-content :is(
        .announcements-page,
        .announcement-management-page,
        .collaboration-invitations-page,
        .contact-page,
        .csv-import-page,
        .deck-collaboration-page,
        .deck-create-page,
        .deck-details-page,
        .deck-edit-page,
        .deck-publish-page,
        .deck-trash-page,
        .following-page,
        .help-page,
        .home-page,
        .library-page,
        .moderation-case-page,
        .moderation-enforcement-page,
        .moderation-operations-page,
        .moderation-queue-page,
        .session-security-page,
        .my-page,
        .notifications-page,
        .profile-page,
        .revision-request-detail-page,
        .revision-request-list-page,
        .revision-request-moderation-page,
        .revision-request-settings-page,
        .revision-request-page,
        .search-page,
        .settings-page,
        .study-history-page,
        .study-session-page,
        .study-start-page) {
        max-width: calc(
            var(--wb-page-content-max-width)
            + var(--app-sidebar-width, 248px));
    }
}

@media (prefers-reduced-motion: reduce) {
    .app-content :is(
        .announcements-page,
        .announcement-management-page,
        .collaboration-invitations-page,
        .contact-page,
        .csv-import-page,
        .deck-collaboration-page,
        .deck-create-page,
        .deck-details-page,
        .deck-edit-page,
        .deck-publish-page,
        .deck-trash-page,
        .following-page,
        .help-page,
        .home-page,
        .library-page,
        .moderation-case-page,
        .moderation-enforcement-page,
        .moderation-operations-page,
        .moderation-queue-page,
        .session-security-page,
        .my-page,
        .notifications-page,
        .profile-page,
        .revision-request-detail-page,
        .revision-request-list-page,
        .revision-request-moderation-page,
        .revision-request-settings-page,
        .revision-request-page,
        .search-page,
        .settings-page,
        .study-history-page,
        .study-session-page,
        .study-start-page) {
        transition: none;
    }
}

img {
    max-width: 100%;
}

h1:focus {
    outline: none;
}

/* 2026.09.30 変更 Radio/Checkboxへ四角いValidation outlineを付けない */
.valid.modified:not([type=checkbox]):not([type=radio]) {
    outline: 1px solid var(--wb-success, #166534);
}

.invalid:not([type=checkbox]):not([type=radio]) {
    outline: 1px solid var(--wb-danger, #B91C1C);
}

.validation-message {
    color: var(--wb-danger, #B91C1C);
}

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, var(--wb-error-boundary-bg, #B91C1C);
    padding: 1rem 1rem 1rem 3.7rem;
    color: var(--wb-error-boundary-text, #FFFFFF);
}

    .blazor-error-boundary::after {
        content: "An error has occurred."
    }

.darker-border-checkbox.form-check-input {
    border-color: var(--wb-checkbox-border, #929292);
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
    color: var(--bs-secondary-color);
    text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
    text-align: start;
}