[data-tr-chat] {
    --tr-chat-ink: #0a192f;
    --tr-chat-muted: #64748b;
    --tr-chat-panel: #f3f7f9;
    --tr-chat-own: #dff7fb;
}

[data-tr-chat] .tr-chat-layout {
    display: grid;
    grid-template-columns: minmax(210px, .72fr) minmax(0, 1.28fr);
    min-height: 560px;
}

[data-tr-chat] .tr-chat-sidebar,
[data-tr-chat] .tr-chat-main { min-width: 0; }
[data-tr-chat] .tr-chat-sidebar { padding: 18px; border-right: 1px solid #e2ebf0; background: #f8fbfc; }
[data-tr-chat] .tr-chat-sidebar h3,
[data-tr-chat] .tr-chat-thread-head h3 { margin: 0 0 12px; color: var(--tr-chat-ink); }
[data-tr-chat] .tr-chat-conversation {
    display: block; width: 100%; margin: 0 0 8px; padding: 12px; box-sizing: border-box;
    border: 1px solid #d7e3ea; border-radius: 10px; background: #fff; color: var(--tr-chat-ink);
    text-align: left; cursor: pointer;
}
[data-tr-chat] .tr-chat-conversation:hover,
[data-tr-chat] .tr-chat-conversation:focus,
[data-tr-chat] .tr-chat-conversation.is-active { border-color: #18c7e8; background: #eafafd; }
[data-tr-chat] .tr-chat-conversation strong,
[data-tr-chat] .tr-chat-conversation small,
[data-tr-chat] .tr-chat-conversation span { display: block; }
[data-tr-chat] .tr-chat-conversation small { margin-top: 4px; color: var(--tr-chat-muted); font-size: 11px; }
[data-tr-chat] .tr-chat-conversation span { margin-top: 6px; overflow: hidden; color: #334155; font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
[data-tr-chat] .tr-chat-main { display: flex; flex-direction: column; }
[data-tr-chat] .tr-chat-new { padding: 18px; border-bottom: 1px solid #e2ebf0; }
[data-tr-chat] .tr-chat-new label,
[data-tr-chat] .tr-chat-reply label { display: block; color: #334155; font-size: 13px; font-weight: 700; }
[data-tr-chat] .tr-chat-new input,
[data-tr-chat] .tr-chat-new textarea,
[data-tr-chat] .tr-chat-reply textarea { width: 100%; box-sizing: border-box; margin-top: 6px; padding: 11px; border: 1px solid #cbd8e1; border-radius: 8px; background: #fff; }
[data-tr-chat] .tr-chat-new textarea { min-height: 78px; }
[data-tr-chat] .tr-chat-search-results { display: none; gap: 4px; margin-top: 5px; max-height: 180px; overflow-y: auto; }
[data-tr-chat] .tr-chat-search-results.is-visible { display: grid; }
[data-tr-chat] .tr-chat-search-result { display: flex; justify-content: space-between; gap: 10px; width: 100%; padding: 9px 10px; border: 1px solid #d7e3ea; border-radius: 8px; background: #f8fbfc; text-align: left; cursor: pointer; }
[data-tr-chat] .tr-chat-search-result:hover,
[data-tr-chat] .tr-chat-search-result:focus { border-color: #18c7e8; background: #eafafd; }
[data-tr-chat] .tr-chat-search-result small { color: var(--tr-chat-muted); }
[data-tr-chat] .tr-chat-thread { display: flex; flex: 1; flex-direction: column; min-height: 0; }
[data-tr-chat] .tr-chat-thread-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 18px; border-bottom: 1px solid #e2ebf0; }
[data-tr-chat] .tr-chat-thread-head h3 { margin: 0; }
[data-tr-chat] .tr-chat-messages { display: flex; flex: 0 1 min(54vh, 520px); flex-direction: column; gap: 8px; height: min(54vh, 520px); min-height: 280px; max-height: 520px; box-sizing: border-box; padding: 16px; overflow-y: auto; overscroll-behavior: contain; border-top: 1px solid #dbe7ed; border-bottom: 1px solid #dbe7ed; background: var(--tr-chat-panel); }
[data-tr-chat] .tr-chat-message { align-self: flex-start; width: fit-content; max-width: 82%; box-sizing: border-box; padding: 10px 13px; border-radius: 14px 14px 14px 4px; background: #fff; box-shadow: 0 1px 2px rgba(8, 26, 49, .08); }
[data-tr-chat] .tr-chat-message.is-own { align-self: flex-end; border-radius: 14px 14px 4px 14px; background: var(--tr-chat-own); }
[data-tr-chat] .tr-chat-message p { margin: 0; color: #1f3347; white-space: pre-wrap; overflow-wrap: anywhere; }
[data-tr-chat] .tr-chat-message small { display: block; margin-top: 5px; color: #738396; font-size: 10px; text-align: right; }
[data-tr-chat] .tr-chat-reply { margin-top: auto; padding: 16px 18px; border-top: 1px solid #e2ebf0; }
[data-tr-chat] .tr-chat-reply textarea { min-height: 72px; resize: vertical; }
[data-tr-chat] .tr-chat-empty { padding: 30px 18px; color: var(--tr-chat-muted); text-align: center; }
[data-tr-chat] [hidden] { display: none !important; }

@media (max-width: 700px) {
    [data-tr-chat] { width: 100%; min-width: 0; overflow: hidden; font-size: 14px; line-height: 1.4; }
    [data-tr-chat] .tr-portal-panel-head { flex-direction: row; align-items: center; gap: 10px; padding: 16px; }
    [data-tr-chat] .tr-portal-panel-head h2 { margin: 0; font-size: 22px; line-height: 1.15; }
    [data-tr-chat] .tr-portal-panel-head p { margin: 0 0 4px; font-size: 11px; }
    [data-tr-chat] .tr-portal-panel-head > span { flex: 0 0 auto; padding: 8px 11px; font-size: 12px; }
    [data-tr-chat] .tr-chat-layout { display: flex; flex-direction: column; min-height: 0; }
    [data-tr-chat] .tr-chat-sidebar { order: 1; padding: 14px; border-right: 0; border-bottom: 1px solid #e2ebf0; }
    [data-tr-chat] .tr-chat-sidebar h3 { margin-bottom: 8px; font-size: 16px; }
    [data-tr-chat] .tr-chat-main { order: 2; width: 100%; }
    [data-tr-chat] .tr-chat-new { padding: 14px; }
    [data-tr-chat] .tr-chat-new label,
    [data-tr-chat] .tr-chat-reply label { font-size: 13px; }
    [data-tr-chat] .tr-chat-new input,
    [data-tr-chat] .tr-chat-new textarea,
    [data-tr-chat] .tr-chat-reply textarea { min-height: 44px; padding: 10px; font-size: 16px; }
    [data-tr-chat] .tr-chat-new input,
    [data-tr-chat] .tr-chat-new textarea,
    [data-tr-chat] .tr-chat-reply textarea {
        font-family: inherit !important;
        font-size: 14px !important;
        font-weight: 400 !important;
        line-height: 1.3 !important;
    }
    [data-tr-chat] .tr-chat-new input::placeholder,
    [data-tr-chat] .tr-chat-new textarea::placeholder,
    [data-tr-chat] .tr-chat-reply textarea::placeholder {
        font-size: 14px !important;
        font-weight: 400 !important;
    }
    [data-tr-chat] .tr-chat-new textarea { min-height: 78px; }
    [data-tr-chat] .tr-chat-thread-head { align-items: center; padding: 12px 14px; }
    [data-tr-chat] .tr-chat-thread-head h3 { margin: 0; font-size: 16px; }
    [data-tr-chat] .tr-chat-thread-head .tr-portal-link { min-height: 36px; padding: 7px 9px; font-size: 12px; }
    [data-tr-chat] .tr-chat-messages { flex: 0 0 auto; height: min(52vh, 420px); min-height: 240px; max-height: 420px; padding: 12px; }
    [data-tr-chat] .tr-chat-message { max-width: 88%; padding: 9px 11px; font-size: 14px; }
    [data-tr-chat] .tr-chat-message small { font-size: 10px; }
    [data-tr-chat] .tr-chat-reply { padding: 12px 14px; }
    [data-tr-chat] .tr-chat-reply .tr-portal-button,
    [data-tr-chat] .tr-chat-new .tr-portal-button { min-height: 42px; padding: 9px 15px; font-size: 14px; }

    [data-tr-chat][data-active="1"] {
        position: fixed; z-index: 30; top: 76px; right: 0; bottom: 72px; left: 0;
        display: flex; flex-direction: column; width: auto; height: auto; max-height: none;
        margin: 0; overflow: hidden; border-radius: 0; background: #fff;
    }
    [data-tr-chat][data-active="1"] .tr-portal-panel-head { flex: 0 0 auto; }
    [data-tr-chat][data-active="1"] .tr-chat-layout { display: flex; flex: 1 1 auto; min-height: 0; }
    [data-tr-chat][data-active="1"] .tr-chat-sidebar,
    [data-tr-chat][data-active="1"] .tr-chat-new { display: none; }
    [data-tr-chat][data-active="1"] .tr-chat-main { display: flex; flex: 1 1 auto; min-height: 0; }
    [data-tr-chat][data-active="1"] .tr-chat-thread { display: flex; flex: 1 1 auto; min-height: 0; }
    [data-tr-chat][data-active="1"] .tr-chat-thread-head { flex: 0 0 auto; }
    [data-tr-chat][data-active="1"] .tr-chat-thread-head > div:first-child { display: flex; flex: 1 1 auto; align-items: center; gap: 8px; min-width: 0; }
    [data-tr-chat][data-active="1"] .tr-chat-thread-head h3 { display: inline-block; min-width: 0; margin: 0; font-size: 18px; line-height: 1.15; }
    [data-tr-chat][data-active="1"] .tr-chat-thread-head > div:last-child { display: flex; flex: 0 0 auto; align-items: center; gap: 5px; white-space: nowrap; }
    [data-tr-chat][data-active="1"] .tr-chat-thread-head .tr-portal-link { min-height: 34px; padding: 6px 8px; font-size: 12px; white-space: nowrap !important; word-break: keep-all; }
    [data-tr-chat][data-active="1"] .tr-chat-messages { flex: 1 1 auto; height: auto; min-height: 0; max-height: none; }
    [data-tr-chat][data-active="1"] .tr-chat-reply { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 8px; align-items: end; flex: 0 0 auto; position: sticky; bottom: 0; padding: 8px 12px 20px; background: #fff; }
    [data-tr-chat][data-active="1"] .tr-chat-reply > label { grid-column: 1; font-size: 0; }
    [data-tr-chat][data-active="1"] .tr-chat-reply textarea { min-height: 48px !important; max-height: 120px !important; margin-top: 0; resize: none; font-size: 16px !important; font-weight: 400 !important; line-height: 1.3 !important; }
    [data-tr-chat][data-active="1"] .tr-chat-reply .tr-portal-button { grid-column: 2; width: auto; min-width: 70px; height: 48px; margin: 0; padding: 8px 13px; font-size: 14px; }
    [data-tr-chat][data-active="1"] .tr-chat-reply [role="status"] { grid-column: 1 / -1; margin: 0; font-size: 12px; }
    [data-tr-chat][data-active="1"] .tr-chat-thread-head { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 8px; padding: 18px 12px 8px; }
    [data-tr-chat][data-active="1"] .tr-chat-thread-head > div:first-child { display: contents; }
    [data-tr-chat][data-active="1"] .tr-chat-thread-head h3 { grid-column: 1 / -1; grid-row: 1; margin: 0 0 2px; font-size: 17px; line-height: 1.15; }
    [data-tr-chat][data-active="1"] .tr-chat-thread-head [data-tr-chat-back] { grid-column: 1; grid-row: 2; align-self: center; }
    [data-tr-chat][data-active="1"] .tr-chat-thread-head > div:last-child { grid-column: 2; grid-row: 2; justify-content: flex-end; width: 100%; margin-top: 0; }
    [data-tr-chat]:has([data-tr-chat-thread]:not([hidden])) { position: fixed; z-index: 30; top: 76px; right: 0; bottom: 72px; left: 0; display: flex; flex-direction: column; width: auto; height: auto; max-height: none; margin: 0; overflow: hidden; border-radius: 0; background: #fff; }
    [data-tr-chat]:has([data-tr-chat-thread]:not([hidden])) .tr-portal-panel-head { display: none; }
    [data-tr-chat]:has([data-tr-chat-thread]:not([hidden])) .tr-chat-layout { display: flex; flex: 1 1 auto; min-height: 0; }
    [data-tr-chat]:has([data-tr-chat-thread]:not([hidden])) .tr-chat-sidebar,
    [data-tr-chat]:has([data-tr-chat-thread]:not([hidden])) .tr-chat-new { display: none; }
    [data-tr-chat]:has([data-tr-chat-thread]:not([hidden])) .tr-chat-main,
    [data-tr-chat]:has([data-tr-chat-thread]:not([hidden])) .tr-chat-thread { display: flex; flex: 1 1 auto; min-height: 0; }
    [data-tr-chat]:has([data-tr-chat-thread]:not([hidden])) .tr-chat-messages { flex: 1 1 auto; height: auto; min-height: 0; max-height: none; }
    [data-tr-chat]:has([data-tr-chat-thread]:not([hidden])) .tr-chat-reply { display: grid; grid-template-columns: minmax(0, 1fr) auto; }
    [data-tr-chat]:has([data-tr-chat-thread]:not([hidden])) .tr-chat-thread-head > div:first-child { display: flex; flex: 1 1 auto; align-items: center; gap: 8px; min-width: 0; }
    [data-tr-chat]:has([data-tr-chat-thread]:not([hidden])) .tr-chat-thread-head > div:last-child { display: flex; flex: 0 0 auto; align-items: center; gap: 5px; white-space: nowrap; }
    [data-tr-chat]:has([data-tr-chat-thread]:not([hidden])) .tr-chat-thread-head { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 8px; padding: 18px 12px 8px; }
    [data-tr-chat]:has([data-tr-chat-thread]:not([hidden])) .tr-chat-thread-head > div:first-child { display: contents; }
    [data-tr-chat]:has([data-tr-chat-thread]:not([hidden])) .tr-chat-thread-head h3 { grid-column: 1 / -1; grid-row: 1; margin: 0 0 2px; font-size: 17px; line-height: 1.15; }
    [data-tr-chat]:has([data-tr-chat-thread]:not([hidden])) .tr-chat-thread-head [data-tr-chat-back] { grid-column: 1; grid-row: 2; align-self: center; }
    [data-tr-chat]:has([data-tr-chat-thread]:not([hidden])) .tr-chat-thread-head > div:last-child { grid-column: 2; grid-row: 2; justify-content: flex-end; width: 100%; margin-top: 0; }
}