/* Fixed-height chat panel with a scrollable history and bottom-pinned composer. */
.contact .info.chat-panel {
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    width: 100%;
    height: min(680px, calc(100vh - 230px));
    min-height: 420px;
    padding: 18px;
    overflow: hidden;
}

.chat-column {
    min-height: 0;
}

.contact .info.chat-panel #messagesList.chat-messages {
    display: flex;
    flex-direction: column;
    gap: 12px;
    flex: 1 1 0;
    min-height: 0;
    margin: 0;
    overflow-x: hidden;
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 4px 32px 8px 28px;
}

.chat-messages .message {
    flex: 0 0 auto;
    margin-bottom: 0;
    padding: 14px 12px;
    top: auto;
    overflow-wrap: anywhere;
}

.chat-messages .message.sent {
    align-self: flex-end;
    width: fit-content;
    max-width: 70%;
    margin-right: 0;
    margin-left: 0;
}

.chat-messages .message.received {
    align-self: flex-start;
    width: fit-content;
    max-width: 70%;
    margin-right: 0;
    margin-left: 0;
}

.chat-messages .message.sent::after {
    top: 50%;
    right: -9px;
    margin-top: 0;
    border: 10px solid transparent;
    border-right: 0;
    border-left-color: #03a9f4;
    transform: translateY(-50%);
}

.chat-messages .message.received::after {
    top: 50%;
    left: -9px;
    margin-top: 0;
    border: 10px solid transparent;
    border-left: 0;
    border-right-color: #4CAF50;
    transform: translateY(-50%);
}

.chat-composer {
    flex: 0 0 auto;
    padding-top: 12px;
    border-top: 1px solid #e5e7eb;
    background: #fff;
}

.chat-composer .input-group {
    display: flex;
    flex-wrap: nowrap;
}

.chat-composer .chat-send-button,
.chat-composer .chat-send-button:hover,
.chat-composer .chat-send-button:focus {
    background-color: #fff;
    border-color: #ced4da;
    color: #03a9f4;
}

.chat-composer .chat-send-button:disabled {
    background-color: #fff;
    color: #9ca3af;
}

@media (max-width: 576px) {
    .contact .info.chat-panel {
        height: min(680px, calc(100vh - 190px));
        min-height: 360px;
        padding: 14px;
    }
}