/* Утилитарные классы */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.m-0 { margin: 0; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }

.p-0 { padding: 0; }
.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 1rem; }
.p-4 { padding: 1.5rem; }
.p-5 { padding: 3rem; }

.d-flex { display: flex; }
.d-none { display: none; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }

.flex-column { flex-direction: column; }
.flex-row { flex-direction: row; }
.justify-content-center { justify-content: center; }
.justify-content-between { justify-content: space-between; }
.align-items-center { align-items: center; }
.align-items-start { align-items: flex-start; }
.align-items-end { align-items: flex-end; }

.w-100 { width: 100%; }
.h-100 { height: 100%; }

.position-relative { position: relative; }
.position-absolute { position: absolute; }
.position-fixed { position: fixed; }

.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }

.border { border: 1px solid var(--border-color, #dee2e6); }
.border-top { border-top: 1px solid var(--border-color, #dee2e6); }
.border-bottom { border-bottom: 1px solid var(--border-color, #dee2e6); }
.border-radius { border-radius: 0.375rem; }

.shadow { box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075); }
.shadow-sm { box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075); }
.shadow-lg { box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.175); }

/* Отключение анимаций */
body.no-animations * {
    transition: none !important;
    animation: none !important;
}


/* Дополнительные утилитарные классы для компактности */
.mt-2 { margin-top: 0.4rem !important; }
.mb-2 { margin-bottom: 0.4rem !important; }
.mt-3 { margin-top: 0.8rem !important; }
.mb-3 { margin-bottom: 0.8rem !important; }

.pt-1 { padding-top: 0.25rem !important; }
.pb-1 { padding-bottom: 0.25rem !important; }



/* Утилиты для текстовых сообщений */
.text-expandable {
    position: relative;
    cursor: pointer;
}

.no-animation {
    transition: none !important;
    animation: none !important;
}

/* Плавное переключение */
.transition-all {
    transition: all 0.3s ease;
}

/* QChat v10: keep appTabs labels visible below 600px.
   At very small widths older runtime/mobile CSS may hide plain text nodes.
   We render labels from attributes, while preserving badge visibility rules. */
@media (max-width: 600px) {
    #appTabs,
    #appTabs.nav,
    #appTabs.nav-tabs {
        display: flex !important;
        flex-wrap: nowrap !important;
        overflow-x: auto !important;
        overflow-y: hidden !important;
        white-space: nowrap !important;
        scrollbar-width: none !important;
        -ms-overflow-style: none !important;
        -webkit-overflow-scrolling: touch !important;
    }

    #appTabs::-webkit-scrollbar {
        display: none !important;
        width: 0 !important;
        height: 0 !important;
    }

    #appTabs > .nav-item,
    #appTabs .nav-item {
        flex: 0 0 auto !important;
        width: auto !important;
        min-width: 0 !important;
        max-width: none !important;
        white-space: nowrap !important;
    }

    #appTabs .nav-link,
    #appTabs .qchat-external-profile-tab {
        display: inline-flex !important;
        align-items: center !important;
        gap: 0.35rem !important;
        width: auto !important;
        min-width: max-content !important;
        max-width: none !important;
        height: auto !important;
        padding-left: 0.65rem !important;
        padding-right: 0.65rem !important;
        white-space: nowrap !important;
        overflow: visible !important;
        text-indent: 0 !important;
        letter-spacing: normal !important;
        line-height: 1.5 !important;
        font-size: 0 !important; /* hide plain text node labels; pseudo-label below renders them */
    }

    #appTabs .nav-link > i,
    #appTabs .nav-link > .fas,
    #appTabs .nav-link > .far,
    #appTabs .nav-link > .fab {
        display: inline-flex !important;
        flex: 0 0 auto !important;
        order: 1 !important;
        visibility: visible !important;
        opacity: 1 !important;
        font-size: 1rem !important;
        margin-right: 0 !important;
    }

    #appTabs .qchat-external-profile-tab-avatar {
        display: inline-flex !important;
        flex: 0 0 auto !important;
        order: 1 !important;
        visibility: visible !important;
        opacity: 1 !important;
        margin-right: 0 !important;
    }

    #appTabs .nav-link:not(.qchat-external-profile-tab)[title]::before {
        content: attr(title) !important;
        display: inline-block !important;
        order: 2 !important;
        flex: 0 0 auto !important;
        width: auto !important;
        min-width: 0 !important;
        max-width: none !important;
        height: auto !important;
        overflow: visible !important;
        white-space: nowrap !important;
        visibility: visible !important;
        opacity: 1 !important;
        font-size: 1rem !important;
        line-height: 1.5 !important;
        color: currentColor !important;
    }

    #appTabs .qchat-external-profile-tab[data-external-username]::before {
        content: attr(data-external-username) !important;
        display: inline-block !important;
        order: 2 !important;
        flex: 0 0 auto !important;
        width: auto !important;
        min-width: 0 !important;
        max-width: none !important;
        height: auto !important;
        overflow: visible !important;
        white-space: nowrap !important;
        visibility: visible !important;
        opacity: 1 !important;
        font-size: 1rem !important;
        line-height: 1.5 !important;
        color: currentColor !important;
    }

    #appTabs .qchat-external-profile-tab-name,
    #appTabs .nav-link > span:not(.badge):not(.qchat-external-profile-tab-avatar):not(.qchat-external-profile-pin-mark) {
        display: none !important;
        visibility: hidden !important;
        opacity: 0 !important;
        width: 0 !important;
        min-width: 0 !important;
        max-width: 0 !important;
        height: 0 !important;
        overflow: hidden !important;
        font-size: 0 !important;
        margin: 0 !important;
        padding: 0 !important;
    }

    #appTabs .qchat-external-profile-pin-mark {
        display: inline-flex !important;
        flex: 0 0 auto !important;
        order: 3 !important;
        visibility: visible !important;
        opacity: 1 !important;
        font-size: 0.85rem !important;
        margin-left: 0.2rem !important;
    }

    #appTabs .badge:not(.hidden):not(.d-none) {
        display: inline-flex !important;
        flex: 0 0 auto !important;
        order: 4 !important;
        align-items: center !important;
        justify-content: center !important;
        visibility: visible !important;
        opacity: 1 !important;
        width: auto !important;
        min-width: var(--bs-badge-min-width, auto) !important;
        max-width: none !important;
        height: auto !important;
        padding: var(--bs-badge-padding-y, 0.35em) var(--bs-badge-padding-x, 0.65em) !important;
        margin-left: 0.25rem !important;
        overflow: visible !important;
        font-size: 0.75rem !important;
    }

    #appTabs .badge.hidden,
    #appTabs .badge.d-none,
    #appTabs .qchat-social-badge.d-none,
    #appTabs .notification-center-badge.d-none,
    #appTabs #unreadMessagesBadge.hidden,
    #appTabs #friendsRequestsBadge.d-none,
    #appTabs #notificationCenterBadge.d-none {
        display: none !important;
        visibility: hidden !important;
        opacity: 0 !important;
        width: 0 !important;
        min-width: 0 !important;
        max-width: 0 !important;
        height: 0 !important;
        min-height: 0 !important;
        max-height: 0 !important;
        padding: 0 !important;
        margin: 0 !important;
        border: 0 !important;
        overflow: hidden !important;
        pointer-events: none !important;
    }
}