:root {
    /*
     * Brand "light green" success color. Bootstrap's --bs-success defaults
     * to a darker green (var(--fc-color-palette-198754)); the app's brand uses var(--fc-color-primary). Override
     * only --bs-success (and its derived state variables) here so
     * btn-success / text-success / bg-success / border-success / etc.
     * render the brand color while keeping their correct semantic meaning.
     * Do NOT override --bs-primary - primary must stay Bootstrap's blue.
     */
    --bs-success: var(--fc-color-primary);
    --bs-success-rgb: 22, 163, 74;
    --bs-success-text-emphasis: var(--fc-color-palette-0f5132);
    --bs-success-bg-subtle: var(--fc-color-palette-d7f2e1);
    --bs-success-border-subtle: var(--fc-color-palette-a9e2bf);

    --fc-modal-surface: var(--fc-color-surface);
    --fc-modal-surface-soft: var(--fc-color-palette-f9fbff);
    --fc-modal-border: var(--fc-color-palette-dfe7f4);
    --fc-modal-text: var(--fc-color-text);
    --fc-modal-muted: var(--fc-color-palette-5b6f91);
    --fc-modal-shadow: 0 16px 40px rgba(var(--fc-color-shadow-strong-rgb), 0.18);

    /*
     * Global z-index scale for the virtual classroom / whiteboard UI.
     * Sequential, low integers - each layer is exactly one step above
     * the layer it must render on top of. Keep all new stacking
     * contexts plugged into this scale instead of inventing new values.
     */
    --z-base: 1;                 /* task/assignment cards, base content */
    --z-canvas-overlay: 2;       /* whiteboard canvas drawing overlay */
    --z-card-raised: 3;          /* a card temporarily raised above its siblings */
    --z-annotation: 4;           /* text editor / annotation host on top of canvas */
    --z-card-controls: 5;        /* in-card floating controls (audio/pdf toolbars) */
    --z-card-hover-controls: 6;  /* hover controls, drag handle, click blocker */
    --z-wb-panel: 7;             /* whiteboard tool launcher + tool panel */
    --z-sticky-bar: 8;           /* mobile sticky section bar, dragged section badge */
    --z-local-loader: 9;         /* section/card-local loading overlays */
    --z-dropdown: 10;            /* in-page dropdowns and popovers */
    --z-panel-bar: 11;           /* classroom bottom control panel bar */
    --z-side-panel: 12;          /* chat panel / AI assistant panel */
    --z-panel-resize: 13;        /* resize handle on the side panels */
    --z-navbar: 14;              /* app navbar */
    --z-navbar-menu: 15;         /* navbar account/logout menu */
    --z-wb-panel-global: 7;      /* whiteboard panel rendered outside its card's stacking context */
    --z-modal: 17;               /* whiteboard/PDF/word-practice/confirm modals */
    --z-page-loader: 18;         /* full classroom page loader */
    --z-toast: 19;                /* toast notifications */
    --z-drag-ghost: 20;           /* touch drag ghost, must clear everything while dragging */
}

/*
 * Bootstrap's .btn-success / .btn-outline-success hardcode their own
 * --bs-btn-* state colors rather than deriving from --bs-success, so the
 * --bs-success override above doesn't recolor the button states on its
 * own. Re-point those component-scoped variables at the brand green so
 * hover/active/focus states stay in sync, without touching .btn-success's
 * selector body or using !important.
 */
.btn-success {
    --bs-btn-bg: var(--bs-success);
    --bs-btn-border-color: var(--bs-success);
    --bs-btn-hover-bg: var(--fc-color-primary-hover);
    --bs-btn-hover-border-color: var(--fc-color-primary-hover);
    --bs-btn-active-bg: var(--fc-color-primary-hover);
    --bs-btn-active-border-color: var(--fc-color-primary-hover);
    --bs-btn-disabled-bg: var(--bs-success);
    --bs-btn-disabled-border-color: var(--bs-success);
    --bs-btn-focus-shadow-rgb: var(--bs-success-rgb);
}

.btn-outline-success {
    --bs-btn-color: var(--bs-success);
    --bs-btn-border-color: var(--bs-success);
    --bs-btn-hover-bg: var(--bs-success);
    --bs-btn-hover-border-color: var(--bs-success);
    --bs-btn-active-bg: var(--bs-success);
    --bs-btn-active-border-color: var(--bs-success);
    --bs-btn-disabled-color: var(--bs-success);
    --bs-btn-disabled-border-color: var(--bs-success);
    --bs-btn-focus-shadow-rgb: var(--bs-success-rgb);
}

html, body {
    height: 100%;
    margin: 0;
    overflow-wrap: break-word;
    word-break: break-word;
}

.app-navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: var(--z-navbar);
    background: var(--fc-color-palette-rgba-255-255-255-0p92);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--fc-color-palette-e3eaf4);
    box-shadow: 0 6px 18px rgba(var(--fc-color-shadow-strong-rgb), 0.045);
    padding-top: 0.3rem;
    padding-bottom: 0.3rem;
}

.app-navbar-inner {
    min-height: 52px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.app-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    color: var(--fc-color-text);
    font-weight: 700;
    text-decoration: none;
    margin: 0;
}

.app-brand:hover,
.app-brand:active,
.app-brand:focus {
    color: var(--fc-color-text);
}

.app-brand-mark {
    width: 30px;
    height: 30px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--fc-color-palette-22c55e) 0%, var(--fc-color-primary) 100%);
    color: var(--fc-color-on-primary);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 1.05rem;
}

.app-brand-icon {
    width: 30px;
    height: 30px;
    flex: 0 0 30px;
    object-fit: contain;
    border-radius: 10px;
}

.app-brand--icon-only .app-brand-icon {
    width: auto;
    max-width: min(240px, calc(100vw - 2rem));
    flex-basis: auto;
    border-radius: 0;
}

.app-nav-actions {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
}

.app-nav-link {
    color: var(--fc-color-palette-2f5f3f);
    text-decoration: none;
    border: 1px solid var(--fc-color-palette-cfe9d6);
    background: var(--fc-color-palette-f4fcf7);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
}

.app-nav-link:hover {
    color: var(--fc-color-success-text);
    background: var(--fc-color-palette-e9f9ef);
}

.app-user-badge {
    border: 1px solid var(--fc-color-palette-d7e1ef);
    background: var(--fc-color-surface);
    color: var(--fc-color-palette-4a5f81);
    font-weight: 600;
    display: inline-flex;
    align-items: center;
}

.app-user-badge-btn {
    cursor: pointer;
    font: inherit;
    line-height: inherit;
}

.app-home-account {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.app-home-logout-btn {
    white-space: nowrap;
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    z-index: var(--z-navbar-menu);
    min-height: 36px;
    padding: 0.45rem 0.82rem;
    border-radius: 12px;
    border: 1px solid var(--fc-color-palette-f2c4c4);
    background: var(--fc-color-palette-fff4f4);
    color: var(--fc-color-palette-b42318);
    box-shadow: 0 10px 24px rgba(var(--fc-color-shadow-strong-rgb), 0.14);
}

.app-home-logout-btn:hover {
    background: var(--fc-color-palette-ffe8e8);
    border-color: var(--fc-color-palette-eaa2a2);
    color: var(--fc-color-palette-8f1d1d);
}

.app-main {
    padding-top: 60px;
}

.app-main-preview {
    padding-top: 0;
}

@media (max-width: 1199.98px) {
    main.app-main-preview {
        padding-top: 64px;
    }
}

main {
    flex: 1 0 auto;
}

footer {
    flex-shrink: 0;
}

.app-footer {
    padding: 0.9rem 0;
    color: var(--fc-color-palette-7b8798);
    background: var(--fc-color-palette-rgba-255-255-255-0p66);
    font-size: 0.73rem;
    line-height: 1.45;
}

.app-footer__inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.35rem 0.85rem;
    text-align: center;
}

.app-footer__social {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
}

.app-footer__social--separate-row {
    margin-top: -0.1rem;
}

.app-footer__copyright {
    color: var(--fc-color-palette-7b8798);
    white-space: nowrap;
}

.app-footer__social-link {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    min-height: 32px;
    padding: 0.2rem 0.45rem;
    border-radius: 999px;
    color: var(--fc-color-palette-65758d);
    text-decoration: none;
    transition: background-color 0.15s ease, color 0.15s ease;
}

.app-footer__social-link img,
.app-footer__vk-icon,
.app-footer__vk-icon svg {
    display: block;
    width: 20px;
    height: 20px;
    flex: 0 0 20px;
}

.app-footer__vk-icon {
    overflow: hidden;
}

.app-footer__social-link:hover,
.app-footer__social-link:focus-visible {
    color: var(--fc-color-palette-2f6bff);
    background: var(--fc-color-palette-eaf2ff);
}

.app-footer__social-link--vk:hover,
.app-footer__social-link--vk:focus-visible {
    color: var(--fc-color-palette-2458d3);
    background: var(--fc-color-palette-eaf2ff);
}

.app-footer__links {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.2rem 0.65rem;
}

.app-footer__links a {
    color: var(--fc-color-palette-65758d);
    text-decoration-color: var(--fc-color-palette-c5d0df);
    text-underline-offset: 0.16em;
}

.app-footer__links a:hover,
.app-footer__links a:focus-visible {
    color: var(--fc-color-palette-1f6f43);
}

.app-footer__requisites {
    color: var(--fc-color-palette-94a0b1);
}

.fc-notification-permission-modal .modal-content {
    border: 1px solid var(--fc-color-border);
    border-radius: 18px;
    box-shadow: 0 16px 40px rgba(var(--fc-color-shadow-strong-rgb), 0.16);
}

.fc-notification-permission-modal .modal-body {
    padding: 1.5rem;
    text-align: center;
}

.fc-notification-permission-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    margin-bottom: 0.85rem;
    border-radius: 50%;
    background: var(--fc-color-success-soft);
    color: var(--fc-color-accent);
    font-size: 1.35rem;
}

.fc-notification-permission-title {
    margin: 0;
    color: var(--fc-color-text);
    font-size: 1.15rem;
    font-weight: 700;
}

.fc-notification-permission-text {
    margin: 0.65rem 0 1.2rem;
    color: var(--fc-color-text-muted);
    font-size: 0.9rem;
    line-height: 1.45;
}

.fc-notification-permission-actions {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
}

.fc-notification-permission-actions .btn-success {
    width: 100%;
}

.fc-notification-permission-actions .btn-link {
    color: var(--fc-color-text-muted);
    text-decoration: none;
}

.fc-notification-permission-actions .btn-link:hover,
.fc-notification-permission-actions .btn-link:focus-visible {
    color: var(--fc-color-text);
}

@media (max-width: 576px) {
    .app-footer {
        padding: 0.65rem 0;
    }

    .app-footer__inner {
        gap: 0.15rem 0.45rem;
    }

    .app-footer__social {
        gap: 0.25rem;
    }

    .app-footer__social-link {
        min-height: 32px;
        padding: 0.2rem 0.25rem;
    }

    .app-footer__links {
        gap: 0;
    }

    .app-footer__links a {
        display: inline-flex;
        align-items: center;
        min-height: 32px;
        padding: 0 0.3rem;
    }

    .app-footer__requisites {
        flex-basis: 100%;
    }
}

.modal-backdrop {
    --bs-backdrop-bg: var(--fc-color-palette-13223f);
    --bs-backdrop-opacity: 0.34;
    z-index: calc(var(--z-modal) - 1);
}

.modal {
    z-index: var(--z-modal);
}

/*
 * Bootstrap's offcanvas panels (e.g. #lessonMaterialPanel) default to
 * --bs-offcanvas-zindex: 1045, way outside this app's z-index scale. Without
 * this override they render above everything plugged into --z-modal,
 * including confirmAction()'s dialog when it's triggered from inside one.
 */
.offcanvas-backdrop {
    z-index: calc(var(--z-modal) - 1);
}

.offcanvas {
    --bs-offcanvas-zindex: var(--z-modal);
}

.modal:not(#whiteboardModal) .modal-dialog {
    padding-left: 8px;
    padding-right: 8px;
}

.modal:not(#whiteboardModal) .modal-content {
    border: 0;
    border-radius: 18px;
    background: linear-gradient(180deg, var(--fc-modal-surface) 0%, var(--fc-modal-surface-soft) 100%);
    box-shadow: var(--fc-modal-shadow);
    overflow: hidden;
}

.modal:not(#whiteboardModal) .modal-header {
    border-bottom: 0;
    padding: 1rem 1.15rem 0.45rem;
}

.modal:not(#whiteboardModal) .modal-title {
    color: var(--fc-modal-text);
    font-weight: 700;
    letter-spacing: 0.01em;
}

.modal:not(#whiteboardModal) .modal-body {
    padding: 0.8rem 1.15rem 1rem;
}

.modal:not(#whiteboardModal) .modal-footer {
    border-top: 0;
    padding: 0.45rem 1.15rem 1.05rem;
}

.modal:not(#whiteboardModal) .form-control,
.modal:not(#whiteboardModal) .form-select,
.modal:not(#whiteboardModal) textarea.form-control {
    border-color: var(--fc-color-palette-d6e0ef);
    border-radius: 11px;
    box-shadow: none;
    color: var(--fc-modal-text);
    background-color: var(--fc-color-surface);
}

.modal:not(#whiteboardModal) .form-control:focus,
.modal:not(#whiteboardModal) .form-select:focus,
.modal:not(#whiteboardModal) textarea.form-control:focus {
    border-color: var(--fc-color-palette-9dbef7);
    box-shadow: 0 0 0 0.2rem rgba(var(--fc-color-shadow-info-rgb), 0.16);
}

.modal:not(#whiteboardModal) .text-muted,
.modal:not(#whiteboardModal) .small.text-muted,
.modal:not(#whiteboardModal) .form-label.text-muted {
    color: var(--fc-modal-muted) !important;
}

.modal:not(#whiteboardModal) .btn-primary {
    border-radius: 12px;
    font-weight: 600;
}

.modal:not(#whiteboardModal) .btn-light,
.modal:not(#whiteboardModal) .btn-outline-secondary,
.modal:not(#whiteboardModal) .btn-secondary {
    border-radius: 12px;
}

.modal:not(#whiteboardModal) .modal-content::before {
    content: "";
    display: block;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, var(--fc-color-palette-e6edf9) 18%, var(--fc-color-palette-e6edf9) 82%, transparent 100%);
}

.teacher-conflict-dialog {
    max-width: 520px;
}

.modal:not(#whiteboardModal) .modal-content.teacher-conflict-card {
    position: relative;
    border: 1px solid var(--fc-color-palette-dbe6f3);
    background:
        radial-gradient(circle at top right, var(--fc-color-palette-rgba-22-163-74-0p12), transparent 34%),
        linear-gradient(180deg, var(--fc-color-surface) 0%, var(--fc-color-palette-f7fbff) 100%);
}

.modal:not(#whiteboardModal) .modal-content.teacher-conflict-card::before {
    content: none;
    display: none;
}

.teacher-conflict-hero {
    position: relative;
    margin-top: -1px;
    min-height: 132px;
    background:
        linear-gradient(135deg, var(--fc-color-palette-rgba-22-163-74-0p14), var(--fc-color-palette-rgba-59-130-246-0p08));
    border-bottom: 1px solid var(--fc-color-palette-e4edf9);
    overflow: hidden;
}

.teacher-conflict-hero__orb {
    position: absolute;
    border-radius: 999px;
    filter: blur(2px);
    opacity: 0.75;
}

.teacher-conflict-hero__orb--one {
    width: 126px;
    height: 126px;
    right: -26px;
    top: -30px;
    background: var(--fc-color-palette-rgba-22-163-74-0p16);
}

.teacher-conflict-hero__orb--two {
    width: 82px;
    height: 82px;
    left: -18px;
    bottom: -20px;
    background: var(--fc-color-palette-rgba-59-130-246-0p14);
}

.teacher-conflict-hero__icon {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.teacher-conflict-hero__icon i {
    width: 62px;
    height: 62px;
    border-radius: 20px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--fc-color-primary) 0%, var(--fc-color-palette-22c55e) 100%);
    color: var(--fc-color-on-primary);
    font-size: 1.6rem;
    box-shadow: 0 14px 30px rgba(var(--fc-color-shadow-brand-rgb), 0.28);
}

.teacher-conflict-body {
    padding: 1.15rem 1.2rem 1.2rem;
}

.teacher-conflict-title {
    color: var(--fc-modal-text);
    font-weight: 800;
    font-size: 1.15rem;
    line-height: 1.25;
}

.teacher-conflict-text {
    color: var(--fc-modal-muted);
    line-height: 1.55;
    font-size: 0.98rem;
}

.teacher-conflict-actions {
    display: flex;
    flex-direction: column;
    gap: 0.72rem;
}

.teacher-conflict-action {
    min-height: 44px;
    width: 100%;
    border-radius: 14px;
    font-weight: 700;
}

.teacher-conflict-action--secondary {
    --bs-btn-bg: var(--fc-color-palette-f4f7fb);
    --bs-btn-border-color: var(--fc-color-palette-d6e0ef);
    --bs-btn-color: var(--fc-color-palette-314866);
    --bs-btn-hover-bg: var(--fc-color-palette-eef3f9);
    --bs-btn-hover-border-color: var(--fc-color-palette-c9d5e6);
    --bs-btn-hover-color: var(--fc-color-text);
    --bs-btn-active-bg: var(--fc-color-palette-eef3f9);
    --bs-btn-active-border-color: var(--fc-color-palette-c9d5e6);
    --bs-btn-active-color: var(--fc-color-text);
    color: var(--fc-color-palette-314866);
    background: var(--fc-color-palette-f4f7fb);
    border-color: var(--fc-color-palette-d6e0ef);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.teacher-conflict-action--primary {
    --bs-btn-bg: var(--fc-color-palette-effaf3);
    --bs-btn-border-color: var(--fc-color-palette-cfe9d6);
    --bs-btn-color: var(--fc-color-success-text);
    --bs-btn-hover-bg: var(--fc-color-palette-e7f7ec);
    --bs-btn-hover-border-color: var(--fc-color-palette-bedec9);
    --bs-btn-hover-color: var(--fc-color-palette-14532d);
    --bs-btn-active-bg: var(--fc-color-palette-e7f7ec);
    --bs-btn-active-border-color: var(--fc-color-palette-bedec9);
    --bs-btn-active-color: var(--fc-color-palette-14532d);
    border: 1px solid var(--fc-color-palette-cfe9d6);
    background: var(--fc-color-palette-effaf3);
    color: var(--fc-color-success-text);
    box-shadow: none;
    justify-content: center;
    text-align: center;
    gap: 0.35rem;
}

.teacher-conflict-action--primary:hover {
    background: var(--fc-color-palette-e7f7ec);
    border-color: var(--fc-color-palette-bedec9);
    color: var(--fc-color-palette-14532d);
}

.teacher-conflict-action--secondary:hover {
    background: var(--fc-color-palette-eef3f9);
    color: var(--fc-color-text);
    border-color: var(--fc-color-palette-c9d5e6);
}

#lessonCsatModal .lesson-csat-dialog {
    max-width: 420px;
}

#lessonCsatModal .lesson-csat-content {
    border-radius: 20px;
}

#lessonCsatModal .lesson-csat-title {
    font-size: 1.06rem;
    font-weight: 700;
    color: var(--fc-color-palette-1e2f4e);
}

#lessonCsatModal .lesson-csat-question {
    font-size: 0.95rem;
    line-height: 1.45;
    color: var(--fc-color-palette-516486);
}

#lessonCsatModal .lesson-csat-stars {
    display: flex;
    width: 100%;
    gap: 0.35rem;
}

#lessonCsatModal .lesson-csat-star-btn {
    flex: 1;
    border: 1px solid var(--fc-color-palette-d8e3f4);
    background: var(--fc-color-surface);
    color: var(--fc-color-palette-b7c1d2);
    padding: 0.2rem 0;
    border-radius: 12px;
    transition: transform 0.15s ease, border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}

#lessonCsatModal .lesson-csat-star-btn:hover,
#lessonCsatModal .lesson-csat-star-btn:focus-visible {
    background: var(--fc-color-palette-f5f8ff);
    border-color: var(--fc-color-palette-bfd2f7);
    color: var(--fc-color-palette-7f95ba);
    outline: none;
    transform: translateY(-1px);
}

#lessonCsatModal .lesson-csat-star-btn.is-selected {
    border-color: var(--fc-color-palette-f6d079);
    background: var(--fc-color-palette-fff8e7);
    color: var(--fc-color-palette-f2c94c);
}

#lessonCsatModal .lesson-csat-star-icon {
    font-size: clamp(1.8rem, 5.2vw, 2.1rem);
    line-height: 1;
    filter: drop-shadow(0 2px 4px rgba(var(--fc-color-shadow-rgb), 0.18));
}

#lessonCsatModal .lesson-csat-comment {
    border-radius: 12px;
    border-color: var(--fc-color-palette-d5e1f2);
    font-size: 0.93rem;
}

#lessonCsatModal .lesson-csat-comment:focus {
    border-color: var(--fc-color-palette-9dbef7);
    box-shadow: 0 0 0 0.2rem rgba(var(--fc-color-shadow-info-rgb), 0.16);
}

.section-title {
    font-weight: 600;
    margin-bottom: 1rem;
}

.confirm-action-overlay {
    position: fixed;
    inset: 0;
    /* Appended to document.body, so it must clear any modal/offcanvas (--z-modal) it's opened from. */
    z-index: calc(var(--z-modal) + 1);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background: var(--fc-color-palette-rgba-16-36-75-0p34);
    backdrop-filter: blur(3px);
}

.confirm-action-modal {
    width: min(380px, 100%);
    border-radius: 18px;
    border: 1px solid var(--fc-color-palette-dce6f6);
    background: var(--fc-color-surface);
    box-shadow: 0 14px 36px rgba(var(--fc-color-shadow-strong-rgb), 0.16);
    padding: 18px 18px 16px;
    text-align: center;
}

.confirm-action-message {
    margin-bottom: 14px;
    color: var(--fc-color-text);
    font-size: 0.95rem;
    line-height: 1.45;
    font-weight: 600;
}

.confirm-action-actions {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.confirm-action-btn {
    min-height: 38px;
    min-width: 94px;
    border-radius: 999px;
    font-size: 0.86rem;
    font-weight: 700;
    padding: 0.36rem 0.95rem;
    border: 1px solid transparent;
}

.confirm-action-btn-confirm {
    background: var(--fc-color-primary);
    border-color: var(--fc-color-primary);
    color: var(--fc-color-on-primary);
}

.confirm-action-btn-confirm:hover {
    background: var(--fc-color-primary-hover);
    border-color: var(--fc-color-primary-hover);
    color: var(--fc-color-on-primary);
}

.confirm-action-btn-cancel {
    background: var(--fc-color-surface);
    border-color: var(--fc-color-palette-d7e1ef);
    color: var(--fc-color-palette-4a5f81);
}

.confirm-action-btn-cancel:hover {
    background: var(--fc-color-palette-f8fbff);
    border-color: var(--fc-color-palette-cdd9ea);
    color: var(--fc-color-palette-2f4568);
}

.confirm-action-btn:focus-visible {
    outline: 2px solid var(--fc-color-palette-73b5ff);
    outline-offset: 2px;
}

.drag-handle {
    cursor: grab;
    user-select: none;
}

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

@media (max-width: 575.98px) {
    .app-navbar-inner {
        min-height: 42px;
    }

    .app-brand {
        font-size: 0.96rem;
    }

    .app-brand-mark {
        width: 24px;
        height: 24px;
        padding: 5px;
        font-size: 0.85rem;
        border-radius: 9px;
    }

    .app-brand-icon {
        width: 24px;
        height: 24px;
        flex-basis: 24px;
        border-radius: 9px;
    }

    .app-brand--icon-only .app-brand-icon {
        max-width: calc(100vw - 2rem);
    }

    .app-nav-link {
        font-size: 0.8rem;
    }

    .app-user-badge {
        display: inline-flex;
    }

    .app-main {
        padding-top: 60px;
    }

    .modal:not(#whiteboardModal) .modal-content {
        border-radius: 16px;
    }

    .modal:not(#whiteboardModal) .modal-header {
        padding: 0.9rem 0.9rem 0.35rem;
    }

    .modal:not(#whiteboardModal) .modal-body {
        padding: 0.7rem 0.9rem 0.9rem;
    }

    .modal:not(#whiteboardModal) .modal-footer {
        padding: 0.35rem 0.9rem 0.9rem;
    }

    .confirm-action-modal {
        width: min(360px, 100%);
        border-radius: 16px;
        padding: 15px 14px 14px;
    }

    .confirm-action-message {
        font-size: 0.9rem;
        margin-bottom: 12px;
    }

    .confirm-action-actions {
        gap: 8px;
    }

    .confirm-action-btn {
        min-width: 86px;
    }
}