#itx-lbwc-widget {
    --itx-lbwc-fab-bg: #25D366;
    --itx-lbwc-fab-icon-color: #FFFFFF;
    --itx-lbwc-header-bg: #075E54;
    --itx-lbwc-panel-bg: #EFEAE2;
    --itx-lbwc-footer-bg: #F7F5F2;
    --itx-lbwc-bot-bg: #FFFFFF;
    --itx-lbwc-user-bg: #D9FDD3;
    --itx-lbwc-option-color: #075E54;
    --itx-lbwc-widget-x: 24px;
    --itx-lbwc-widget-y: 24px;
    --itx-lbwc-fab-size: 64px;
    --itx-lbwc-panel-width: 360px;
    --itx-lbwc-panel-height: 520px;
    position: fixed;
    right: var(--itx-lbwc-widget-x);
    bottom: var(--itx-lbwc-widget-y);
    z-index: 999999;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

#itx-lbwc-widget[data-side="left"] {
    left: var(--itx-lbwc-widget-x);
    right: auto;
}

#itx-lbwc-widget[data-side="right"] {
    right: var(--itx-lbwc-widget-x);
    left: auto;
}

.itx-lbwc-fab {
    width: var(--itx-lbwc-fab-size);
    height: var(--itx-lbwc-fab-size);
    border: 0;
    border-radius: 50%;
    background: var(--itx-lbwc-fab-bg);
    color: var(--itx-lbwc-fab-icon-color);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 28px rgba(0, 0, 0, 0.25);
    cursor: pointer;
    transition: transform .18s ease, box-shadow .18s ease;
}

.itx-lbwc-fab:hover,
.itx-lbwc-fab:focus {
    transform: translateY(-1px) scale(1.02);
    box-shadow: 0 14px 30px rgba(0, 0, 0, 0.28);
    outline: none;
}

.itx-lbwc-fab-icon {
    width: calc(var(--itx-lbwc-fab-size) * 0.54);
    height: calc(var(--itx-lbwc-fab-size) * 0.54);
    display: block;
}

.itx-lbwc-fab-image {
    object-fit: contain;
}

.itx-lbwc-panel {
    position: absolute;
    right: 0;
    bottom: calc(var(--itx-lbwc-fab-size) + 16px);
    width: min(calc(100vw - 24px), var(--itx-lbwc-panel-width));
    height: min(78vh, var(--itx-lbwc-panel-height));
    background: var(--itx-lbwc-panel-bg);
    border-radius: 18px;
    overflow: hidden;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.30);
    display: flex;
    flex-direction: column;
}

#itx-lbwc-widget[data-side="left"] .itx-lbwc-panel {
    left: 0;
    right: auto;
}

.itx-lbwc-header {
    background: var(--itx-lbwc-header-bg);
    color: #ffffff;
    padding: 14px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

.itx-lbwc-header-left {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}

.itx-lbwc-avatar {
    width: 40px;
    height: 40px;
    min-width: 40px;
    border-radius: 50%;
    object-fit: cover;
    background: rgba(255, 255, 255, 0.18);
}

.itx-lbwc-avatar-fallback {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.itx-lbwc-header-meta {
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.itx-lbwc-title {
    color: #ffffff;
    font-size: 15px;
    line-height: 1.2;
}

.itx-lbwc-status {
    font-size: 12px;
    color: rgba(255, 255, 255, 0.86);
}

.itx-lbwc-header-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}

.itx-lbwc-header-btn {
    width: 32px;
    height: 32px;
    border: 0;
    background: transparent;
    color: #ffffff;
    font-size: 20px;
    line-height: 1;
    border-radius: 50%;
    cursor: pointer;
}

.itx-lbwc-header-btn:hover,
.itx-lbwc-header-btn:focus {
    background: rgba(255, 255, 255, 0.12);
    outline: none;
}

.itx-lbwc-body {
    flex: 1 1 auto;
    overflow-y: auto;
    padding: 16px 12px 12px;
    background:
        radial-gradient(circle at 25% 25%, rgba(255,255,255,.18) 0, rgba(255,255,255,0) 32%) 0 0 / 28px 28px,
        radial-gradient(circle at 75% 75%, rgba(255,255,255,.14) 0, rgba(255,255,255,0) 30%) 0 0 / 34px 34px,
        var(--itx-lbwc-panel-bg);
}

.itx-lbwc-messages {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.itx-lbwc-message-row {
    display: flex;
}

.itx-lbwc-message-row.bot {
    justify-content: flex-start;
}

.itx-lbwc-message-row.user {
    justify-content: flex-end;
}

.itx-lbwc-bubble {
    max-width: 82%;
    padding: 10px 12px 20px;
    border-radius: 12px;
    font-size: 14px;
    line-height: 1.45;
    color: #111B21;
    position: relative;
    box-shadow: 0 1px 1px rgba(0, 0, 0, 0.08);
    animation: itxLbwcFadeIn .18s ease;
    white-space: normal;
    word-break: break-word;
}

.itx-lbwc-message-row.bot .itx-lbwc-bubble {
    background: var(--itx-lbwc-bot-bg);
    border-top-left-radius: 6px;
}

.itx-lbwc-message-row.user .itx-lbwc-bubble {
    background: var(--itx-lbwc-user-bg);
    border-top-right-radius: 6px;
}

.itx-lbwc-time {
    position: absolute;
    right: 10px;
    bottom: 6px;
    font-size: 11px;
    color: rgba(17, 27, 33, 0.56);
}

.itx-lbwc-footer {
    border-top: 1px solid rgba(17, 27, 33, 0.08);
    background: var(--itx-lbwc-footer-bg);
    padding: 10px;
    flex: 0 0 auto;
}

.itx-lbwc-options {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.itx-lbwc-option {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 12px;
    border: 1px solid rgba(17, 27, 33, 0.12);
    border-radius: 999px;
    background: #ffffff;
    color: var(--itx-lbwc-option-color);
    font-size: 13px;
    line-height: 1.2;
    cursor: pointer;
    transition: transform .16s ease, background .16s ease, border-color .16s ease;
}

.itx-lbwc-option:hover,
.itx-lbwc-option:focus {
    background: #ecffef;
    border-color: rgba(17, 27, 33, 0.22);
    transform: translateY(-1px);
    outline: none;
}

.itx-lbwc-typing {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    min-height: 12px;
}

.itx-lbwc-typing span {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: rgba(17, 27, 33, 0.45);
    animation: itxLbwcBounce 1.1s infinite ease-in-out;
    display: inline-block;
}

.itx-lbwc-typing span:nth-child(2) {
    animation-delay: .12s;
}

.itx-lbwc-typing span:nth-child(3) {
    animation-delay: .24s;
}

@keyframes itxLbwcBounce {
    0%, 80%, 100% { transform: translateY(0); opacity: .35; }
    40% { transform: translateY(-3px); opacity: 1; }
}

@keyframes itxLbwcFadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 640px) {
    #itx-lbwc-widget {
        right: max(12px, var(--itx-lbwc-widget-x));
        bottom: max(12px, var(--itx-lbwc-widget-y));
    }

    #itx-lbwc-widget[data-side="left"] {
        left: max(12px, var(--itx-lbwc-widget-x));
        right: auto;
    }

    .itx-lbwc-panel {
        width: min(calc(100vw - 16px), var(--itx-lbwc-panel-width));
        height: min(78vh, var(--itx-lbwc-panel-height));
    }
}