{{-- Shared messenger + pms-user-avatar styles (enterprise chat UI) --}}
<style>
    :root {
        --msgr-accent: #0e7490;
        --msgr-accent-light: #0284c7;
        --msgr-accent-soft: rgba(14, 116, 144, 0.1);
        --msgr-surface: #ffffff;
        --msgr-surface-alt: #f8fafc;
        --msgr-border: rgba(15, 23, 42, 0.08);
        --msgr-text: #0f172a;
        --msgr-muted: #64748b;
        --msgr-shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
    }
    body.dark-mode {
        --msgr-surface: #1e293b;
        --msgr-surface-alt: #0f172a;
        --msgr-border: rgba(255, 255, 255, 0.08);
        --msgr-text: #f1f5f9;
        --msgr-muted: #94a3b8;
        --msgr-accent-soft: rgba(56, 189, 248, 0.12);
        --msgr-shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
    }

    /* —— Reusable avatar (messenger + app-wide) —— */
    .pms-user-avatar {
        position: relative;
        display: inline-flex;
        flex-shrink: 0;
        vertical-align: middle;
    }
    .pms-user-avatar__inner {
        position: relative;
        display: flex;
        align-items: center;
        justify-content: center;
        width: 100%;
        height: 100%;
        border-radius: 50%;
        overflow: hidden;
        box-shadow: 0 1px 3px rgba(15, 23, 42, 0.12);
    }
    .pms-user-avatar__img {
        width: 100%;
        height: 100%;
        object-fit: cover;
        display: block;
        border-radius: 50%;
    }
    .pms-user-avatar__placeholder {
        width: 100%;
        height: 100%;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(145deg, #0e7490 0%, #067476 55%, #209d9e 100%);
        color: #fff;
        border-radius: 50%;
        position: relative;
    }
    .pms-user-avatar__placeholder .fas.fa-user {
        /* font-size: 42%; */
        opacity: 0.95;
        line-height: 1;
    }
    .pms-user-avatar__initials {
        position: absolute;
        inset: 0;
        display: flex;
        align-items: center;
        justify-content: center;
        font-weight: 700;
        font-size: 36%;
        letter-spacing: 0.02em;
        opacity: 0;
        pointer-events: none;
    }
    .pms-user-avatar--xs { width: 32px; height: 32px; }
    .pms-user-avatar--sm { width: 36px; height: 36px; }
    .pms-user-avatar--md { width: 44px; height: 44px; }
    .pms-user-avatar--lg { width: 48px; height: 48px; }
    .pms-user-avatar--xl { width: 56px; height: 56px; }
    .pms-user-avatar__status {
        position: absolute;
        bottom: 0;
        right: 0;
        width: 11px;
        height: 11px;
        border-radius: 50%;
        border: 2px solid var(--msgr-surface-alt);
        background: #94a3b8;
        box-shadow: 0 0 0 1px rgba(15, 23, 42, 0.06);
    }
    .pms-user-avatar__status.is-online { background: #22c55e; }
    body.dark-mode .pms-user-avatar__status { border-color: #0f172a; }

    /* —— Messenger shell —— */
    /* Single scroll: shell fits viewport; only .msgr-messages scrolls */
    section.content > .container-fluid:has(> .msgr-shell) {
        height: calc(100vh - 7.5rem);
        max-height: calc(100vh - 7.5rem);
        overflow: hidden;
        display: flex;
        flex-direction: column;
    }
    .msgr-shell {
        display: flex;
        flex: 1 1 auto;
        width: 100%;
        height: 100%;
        max-height: 100%;
        min-height: 440px;
        background: var(--msgr-surface);
        border-radius: 0.65rem;
        overflow: hidden;
        box-shadow: var(--msgr-shadow);
        border: 1px solid var(--msgr-border);
    }
    .msgr-sidebar {
        width: 300px;
        max-width: 36vw;
        border-right: 1px solid var(--msgr-border);
        display: flex;
        flex-direction: column;
        flex-shrink: 0;
        background: var(--msgr-surface-alt);
    }
    .msgr-sidebar__head {
        padding: 0;
        border-bottom: 1px solid var(--msgr-border);
        background: var(--msgr-surface);
        flex-shrink: 0;
    }
    .msgr-sidebar__tabs {
        display: flex;
        align-items: stretch;
        gap: 0;
        padding: 0 0.75rem;
        border-bottom: 1px solid var(--msgr-border);
        background: var(--msgr-surface-alt);
    }
    .msgr-sidebar__tab {
        position: relative;
        display: inline-flex;
        align-items: center;
        padding: 0.55rem 0.65rem;
        margin-bottom: -1px;
        font-size: 0.8125rem;
        font-weight: 600;
        letter-spacing: 0.01em;
        color: var(--msgr-muted);
        background: transparent;
        border: none;
        cursor: default;
        user-select: none;
        transition: color 0.15s ease;
    }
    .msgr-sidebar__tab.is-active {
        color: var(--msgr-accent);
    }
    .msgr-sidebar__tab.is-active::after {
        content: '';
        position: absolute;
        left: 0.65rem;
        right: 0.65rem;
        bottom: 0;
        height: 2px;
        border-radius: 2px 2px 0 0;
        background: var(--msgr-accent);
    }
    .msgr-search-wrap {
        position: relative;
        z-index: 2;
        padding: 0.5rem 0.75rem 0.6rem;
    }
    .msgr-search-wrap input {
        height: calc(1.5em + 0.5rem + 2px);
        padding: 0.25rem 0.75rem 0.25rem 2rem;
        border-radius: 0.375rem;
        font-size: 0.8125rem;
        line-height: 1.4;
        border: 1px solid var(--msgr-border);
        background: var(--msgr-surface);
        transition: border-color 0.15s, box-shadow 0.15s;
    }
    .msgr-search-wrap input::placeholder {
        color: #94a3b8;
        opacity: 1;
    }
    body.dark-mode .msgr-search-wrap input::placeholder { color: #64748b; }
    .msgr-search-wrap input:focus {
        border-color: rgba(14, 116, 144, 0.45);
        box-shadow: 0 0 0 2px var(--msgr-accent-soft);
        background: var(--msgr-surface);
    }
    .msgr-search-wrap .fa-search {
        position: absolute;
        left: 1.35rem;
        top: 50%;
        transform: translateY(-50%);
        font-size: 0.75rem;
        color: #94a3b8;
        pointer-events: none;
    }
    .msgr-conv-list {
        flex: 1;
        overflow-y: auto;
        padding: 0.25rem 0;
        scrollbar-width: thin;
    }
    .msgr-conv-item {
        display: flex;
        align-items: flex-start;
        gap: 0.625rem;
        padding: 0.5rem 0.75rem;
        margin: 0 0.25rem;
        border-radius: 0.375rem;
        cursor: pointer;
        border: none;
        background: transparent;
        width: calc(100% - 0.5rem);
        text-align: left;
        transition: background 0.15s ease;
    }
    .msgr-conv-item:hover {
        background: rgba(14, 116, 144, 0.06);
    }
    body.dark-mode .msgr-conv-item:hover {
        background: rgba(56, 189, 248, 0.08);
    }
    .msgr-conv-item.is-active {
        background: var(--msgr-accent-soft);
        box-shadow: inset 2px 0 0 0 var(--msgr-accent);
    }
    .msgr-conv-item__avatar {
        flex-shrink: 0;
        padding-top: 0.1rem;
    }
    .msgr-conv-item .pms-user-avatar__status {
        width: 9px;
        height: 9px;
        border-width: 1.5px;
    }
    .msgr-conv-item.has-unread .msgr-conv-name {
        font-weight: 600;
        color: var(--msgr-text);
    }
    .msgr-conv-meta {
        min-width: 0;
        flex: 1;
        display: flex;
        flex-direction: column;
        gap: 0.125rem;
        padding-top: 0.05rem;
    }
    .msgr-conv-row {
        display: flex;
        align-items: center;
        gap: 0.5rem;
        min-width: 0;
    }
    .msgr-conv-row--top {
        align-items: baseline;
        line-height: 1.25;
    }
    .msgr-conv-row--bottom {
        line-height: 1.3;
        min-height: 1.05rem;
    }
    .msgr-conv-name {
        flex: 1;
        min-width: 0;
        font-weight: 500;
        font-size: 0.8125rem;
        color: var(--msgr-text);
    }
    .msgr-conv-designation {
        font-size: 0.6875rem;
        line-height: 1.25;
        color: #94a3b8;
        max-width: 100%;
    }
    body.dark-mode .msgr-conv-designation { color: #64748b; }
    .msgr-conv-preview {
        flex: 1;
        min-width: 0;
        font-size: 0.75rem;
        line-height: 1.3;
        color: var(--msgr-muted);
    }
    .msgr-conv-item.has-unread .msgr-conv-preview {
        color: #475569;
        font-weight: 500;
    }
    body.dark-mode .msgr-conv-item.has-unread .msgr-conv-preview {
        color: #cbd5e1;
    }
    .msgr-conv-time {
        flex-shrink: 0;
        font-size: 0.625rem;
        font-weight: 500;
        line-height: 1.2;
        color: #94a3b8;
        letter-spacing: 0.01em;
    }
    .msgr-conv-item.has-unread .msgr-conv-time {
        color: var(--msgr-accent);
    }
    .msgr-conv-badge-wrap {
        flex-shrink: 0;
        display: inline-flex;
        align-items: center;
        margin-left: auto;
    }
    .msgr-unread-badge {
        background: var(--msgr-accent);
        color: #fff;
        font-size: 0.5625rem;
        font-weight: 700;
        line-height: 1;
        min-width: 1.125rem;
        height: 1.125rem;
        border-radius: 999px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        padding: 0 0.3rem;
        box-shadow: none;
    }
    .msgr-main {
        flex: 1;
        display: flex;
        flex-direction: column;
        min-width: 0;
        min-height: 0;
        overflow: hidden;
        background: var(--msgr-surface);
        position: relative;
    }
    #msgrEmptyState {
        flex: 1 1 auto;
        min-height: 0;
        overflow: hidden;
    }
    #msgrChatPanel {
        flex: 1 1 auto;
        min-height: 0;
        min-width: 0;
        overflow: hidden;
    }
    #msgrChatPanel.d-flex {
        display: flex;
        flex-direction: column;
    }
    .msgr-chat-head {
        flex-shrink: 0;
        padding: 0.55rem 0.85rem;
        min-height: 52px;
        border-bottom: 1px solid var(--msgr-border);
        display: flex;
        align-items: center;
        gap: 0.625rem;
        background: var(--msgr-surface);
    }
    #msgrLoadMoreWrap {
        flex-shrink: 0;
    }
    .msgr-chat-head .msgr-back-btn {
        display: none;
        width: 40px;
        height: 40px;
        min-width: 40px;
        min-height: 40px;
        padding: 0;
        margin: 0;
        flex-shrink: 0;
        align-items: center;
        justify-content: center;
        border: 1px solid var(--msgr-border);
        border-radius: 50%;
        background: var(--msgr-surface-alt);
        color: var(--msgr-text);
        box-shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
        cursor: pointer;
        line-height: 1;
        box-sizing: border-box;
        -webkit-tap-highlight-color: transparent;
        transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
    }
    .msgr-chat-head .msgr-back-btn i {
        font-size: 0.875rem;
        line-height: 1;
        display: block;
        pointer-events: none;
        transform: translateX(-0.5px);
    }
    .msgr-chat-head .msgr-back-btn:hover {
        background: var(--msgr-accent-soft);
        border-color: rgba(14, 116, 144, 0.35);
        color: var(--msgr-accent);
        box-shadow: 0 2px 8px rgba(14, 116, 144, 0.12);
    }
    .msgr-chat-head .msgr-back-btn:active {
        transform: scale(0.96);
        box-shadow: 0 1px 3px rgba(14, 116, 144, 0.1);
    }
    .msgr-chat-head .msgr-back-btn:focus {
        outline: none;
        box-shadow: 0 0 0 3px var(--msgr-accent-soft), 0 1px 2px rgba(15, 23, 42, 0.06);
    }
    .msgr-chat-head .msgr-back-btn:focus-visible {
        border-color: var(--msgr-accent);
        color: var(--msgr-accent);
    }
    body.dark-mode .msgr-chat-head .msgr-back-btn {
        box-shadow: 0 1px 3px rgba(0, 0, 0, 0.25);
    }
    body.dark-mode .msgr-chat-head .msgr-back-btn:hover {
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.35);
    }
    .msgr-chat-head__name {
        font-size: 0.875rem;
        font-weight: 600;
        line-height: 1.3;
        color: var(--msgr-text);
    }
    .msgr-chat-head__subtitle {
        font-size: 0.6875rem;
        line-height: 1.25;
        color: #94a3b8;
        margin-top: 0.1rem;
    }
    body.dark-mode .msgr-chat-head__subtitle { color: #64748b; }
    .msgr-messages {
        flex: 1 1 0;
        min-height: 0;
        overflow-x: hidden;
        overflow-y: auto;
        overscroll-behavior: contain;
        -webkit-overflow-scrolling: touch;
        padding: 1.25rem 1.35rem;
        display: flex;
        flex-direction: column;
        gap: 0.65rem;
        background: linear-gradient(180deg, var(--msgr-surface-alt) 0%, var(--msgr-surface) 120px);
        scrollbar-width: thin;
    }
    .msgr-messages > .msgr-empty {
        flex: 1 1 auto;
        margin: auto 0;
    }
    .msgr-bubble-row {
        display: flex;
        align-items: flex-end;
        gap: 0.5rem;
        max-width: min(82%, 520px);
    }
    .msgr-bubble-row.is-mine {
        align-self: flex-end;
        flex-direction: row-reverse;
    }
    .msgr-bubble-row:not(.is-mine) { align-self: flex-start; }
    .msgr-bubble-row__avatar { align-self: flex-end; margin-bottom: 1.25rem; }
    .msgr-bubble-stack { min-width: 0; display: flex; flex-direction: column; }
    .msgr-bubble-row.is-mine .msgr-bubble-stack { align-items: flex-end; }
    .msgr-bubble {
        padding: 0.6rem 0.95rem;
        border-radius: 1.1rem;
        font-size: 0.9375rem;
        line-height: 1.5;
        word-break: break-word;
        box-shadow: 0 1px 2px rgba(15, 23, 42, 0.06);
    }
    .msgr-bubble__text {
        white-space: pre-wrap;
        word-break: break-word;
        overflow-wrap: anywhere;
    }
    .msgr-bubble-row.is-mine .msgr-bubble {
        background: linear-gradient(145deg, #0e7490 0%, #067476 55%, #209d9e 100%);
        color: #fff;
        border-bottom-right-radius: 0.3rem;
    }
    .msgr-bubble-row:not(.is-mine) .msgr-bubble {
        background: var(--msgr-surface);
        color: var(--msgr-text);
        border: 1px solid var(--msgr-border);
        border-bottom-left-radius: 0.3rem;
    }
    body.dark-mode .msgr-bubble-row:not(.is-mine) .msgr-bubble {
        background: #334155;
        border-color: rgba(255, 255, 255, 0.06);
    }
    .msgr-bubble.is-deleted { font-style: italic; opacity: 0.72; }
    .msgr-bubble-meta {
        font-size: 0.6875rem;
        color: var(--msgr-muted);
        margin-top: 0.25rem;
        display: flex;
        align-items: center;
        gap: 0.35rem;
        flex-wrap: wrap;
    }
    .msgr-bubble-row.is-mine .msgr-bubble-meta .fa-check-double { color: #7dd3fc !important; }
    .msgr-composer {
        padding: 0.55rem 0.85rem 0.65rem;
        display: flex;
        gap: 0.5rem;
        align-items: flex-end;
        background: transparent;
    }
    .msgr-composer textarea {
        --msgr-composer-min-h: 44px;
        --msgr-composer-max-h: 148px;
        resize: none;
        min-height: var(--msgr-composer-min-h);
        max-height: var(--msgr-composer-max-h);
        height: var(--msgr-composer-min-h);
        overflow-y: hidden;
        overflow-x: hidden;
        border-radius: 1.35rem;
        font-size: 0.9375rem;
        line-height: 1.45;
        border: 1px solid var(--msgr-border);
        padding: 0.6rem 1rem;
        box-sizing: border-box;
        transition: height 0.12s ease, border-color 0.2s ease, box-shadow 0.2s ease;
        scrollbar-width: thin;
    }
    .msgr-composer textarea.is-overflow {
        overflow-y: auto;
    }
    .msgr-composer textarea:focus {
        border-color: var(--msgr-accent);
        box-shadow: 0 0 0 3px var(--msgr-accent-soft);
    }
    .msgr-composer .msgr-composer__send-btn {
        width: 44px;
        height: 44px;
        min-width: 44px;
        min-height: 44px;
        max-width: 44px;
        max-height: 44px;
        padding: 0;
        margin: 0;
        border: none;
        border-radius: 50%;
        flex-shrink: 0;
        align-self: flex-end;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        line-height: 1;
        box-sizing: border-box;
        background: linear-gradient(135deg, #0e7490 0%, #0284c7 100%);
        box-shadow: 0 4px 12px rgba(14, 116, 144, 0.35);
        transition: transform 0.15s ease, box-shadow 0.15s ease, filter 0.15s ease;
    }
    .msgr-composer .msgr-composer__send-btn i {
        font-size: 0.9375rem;
        line-height: 1;
        margin: 0;
        padding: 0;
        display: block;
        pointer-events: none;
        transform: translate(1px, -1px);
    }
    .msgr-composer .msgr-composer__send-btn:hover {
        transform: translateY(-1px);
        filter: brightness(1.05);
        box-shadow: 0 6px 16px rgba(14, 116, 144, 0.42);
        color: #fff;
    }
    .msgr-composer .msgr-composer__send-btn:active {
        transform: translateY(0) scale(0.96);
        filter: brightness(0.98);
        box-shadow: 0 2px 8px rgba(14, 116, 144, 0.32);
    }
    .msgr-composer .msgr-composer__send-btn:focus {
        outline: none;
        color: #fff;
        box-shadow: 0 0 0 3px var(--msgr-accent-soft), 0 4px 12px rgba(14, 116, 144, 0.35);
    }
    .msgr-composer .msgr-composer__send-btn:disabled {
        opacity: 0.55;
        transform: none;
        box-shadow: none;
        cursor: not-allowed;
    }
    .msgr-empty {
        flex: 1;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        color: var(--msgr-muted);
        padding: 2.5rem 1.5rem;
        text-align: center;
    }
    .msgr-empty__icon {
        width: 88px;
        height: 88px;
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        background: linear-gradient(145deg, rgba(14, 116, 144, 0.15) 0%, rgba(29, 78, 216, 0.12) 100%);
        margin-bottom: 1.25rem;
    }
    .msgr-empty__icon i {
        font-size: 2.25rem;
        color: var(--msgr-accent);
        opacity: 0.85;
    }
    .msgr-empty__title {
        font-size: 0.9375rem;
        font-weight: 600;
        color: var(--msgr-text);
        margin-bottom: 0.35rem;
    }
    .msgr-conv-list .msgr-empty {
        padding: 1.75rem 1rem;
    }
    .msgr-conv-list .msgr-empty__icon {
        width: 56px;
        height: 56px;
        margin-bottom: 0.85rem;
    }
    .msgr-conv-list .msgr-empty__icon i {
        font-size: 1.5rem;
    }
    .msgr-conv-list .msgr-empty__title {
        font-size: 0.8125rem;
    }
    .msgr-skeleton {
        padding: 0.5rem 0.75rem;
        display: flex;
        align-items: flex-start;
        gap: 0.625rem;
    }
    .msgr-skeleton__avatar {
        width: 36px;
        height: 36px;
        border-radius: 50%;
        flex-shrink: 0;
    }
    .msgr-skeleton__lines { min-width: 0; }
    .msgr-skeleton .sk {
        background: linear-gradient(90deg, #e2e8f0 25%, #f1f5f9 50%, #e2e8f0 75%);
        background-size: 200% 100%;
        animation: msgr-shimmer 1.2s infinite;
        border-radius: 6px;
    }
    body.dark-mode .msgr-skeleton .sk {
        background: linear-gradient(90deg, #334155 25%, #475569 50%, #334155 75%);
        background-size: 200% 100%;
    }
    @keyframes msgr-shimmer {
        0% { background-position: 200% 0; }
        100% { background-position: -200% 0; }
    }
    .msgr-user-results {
        position: absolute;
        left: 0;
        right: 0;
        top: calc(100% + 4px);
        z-index: 30;
        background: var(--msgr-surface);
        border: 1px solid var(--msgr-border);
        border-radius: 0.65rem;
        box-shadow: var(--msgr-shadow);
        max-height: 280px;
        overflow-y: auto;
        display: none;
    }
    .msgr-user-results.is-open { display: block; }
    .msgr-user-result {
        display: flex;
        align-items: center;
        gap: 0.625rem;
        padding: 0.45rem 0.75rem;
        width: 100%;
        border: none;
        background: transparent;
        text-align: left;
        cursor: pointer;
        transition: background 0.15s;
        font-size: 0.8125rem;
    }
    .msgr-user-result strong {
        font-size: 0.8125rem;
        font-weight: 600;
    }
    .msgr-user-result small {
        font-size: 0.6875rem;
    }
    .msgr-user-result:hover { background: rgba(14, 116, 144, 0.06); }
    .msgr-date-divider {
        align-self: center;
        font-size: 0.6875rem;
        font-weight: 600;
        color: var(--msgr-muted);
        background: var(--msgr-surface-alt);
        padding: 0.2rem 0.65rem;
        border-radius: 999px;
        margin: 0.5rem 0;
    }
    @media (max-width: 767.98px) {
        section.content > .container-fluid:has(> .msgr-shell) {
            height: calc(100vh - 6.75rem);
            max-height: calc(100vh - 6.75rem);
        }
        .msgr-shell {
            min-height: 0;
            border-radius: 0;
        }
        .msgr-sidebar {
            width: 100%;
            max-width: none;
            position: absolute;
            inset: 0;
            z-index: 5;
            transition: transform 0.22s ease;
        }
        .msgr-shell.chat-open .msgr-sidebar { transform: translateX(-100%); }
        .msgr-chat-head .msgr-back-btn {
            display: inline-flex;
            width: 44px;
            height: 44px;
            min-width: 44px;
            min-height: 44px;
        }
        .msgr-chat-head .msgr-back-btn i {
            font-size: 0.9375rem;
        }
        .msgr-bubble-row { max-width: 92%; }
        .msgr-conv-item { padding: 0.55rem 0.65rem; }
    }
    @media (min-width: 1200px) {
        .msgr-sidebar { width: 320px; }
    }
</style>