.agent-chat {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.llm-config {
    padding: 18px;
    border-radius: 22px;
    background: linear-gradient(180deg, rgba(244, 248, 252, 0.95), rgba(234, 240, 245, 0.92));
    border: 1px solid rgba(125, 148, 177, 0.14);
}

.llm-config h4 {
    margin: 0 0 14px;
    font-size: 15px;
    font-weight: 700;
    color: #516577;
}

.config-row {
    display: grid;
    grid-template-columns: 82px minmax(0, 1fr);
    gap: 12px;
    align-items: center;
    margin-bottom: 12px;
}

.config-row:last-of-type {
    margin-bottom: 16px;
}

.config-row label {
    color: #647789;
    font-size: 14px;
    font-weight: 600;
}

.btn-config {
    min-width: 112px;
    padding: 0 18px;
    border-radius: 16px;
    background: linear-gradient(160deg, var(--btn-secondary-start), var(--btn-secondary-end));
}

.llm-config > .btn-config + .btn-config {
    margin-left: 10px;
}

.chat-input {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 12px;
    align-items: stretch;
}

.chat-history {
    min-height: 280px;
    max-height: 380px;
    overflow-y: auto;
    padding: 18px;
    border-radius: 22px;
    background: linear-gradient(180deg, rgba(245, 248, 251, 0.95), rgba(234, 240, 245, 0.92));
    border: 1px solid rgba(125, 148, 177, 0.14);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.message {
    max-width: min(82%, 420px);
    padding: 12px 14px;
    border-radius: 18px;
    box-shadow: 0 10px 18px rgba(53, 74, 97, 0.08);
}

.message.user {
    align-self: flex-end;
    background: linear-gradient(160deg, #e1f1ff, #c5def6);
}

.message.agent {
    align-self: flex-start;
    background: linear-gradient(160deg, #ecf6ea, #d9ebd6);
}

.message p {
    margin: 0;
    color: #2f4253;
    line-height: 1.6;
    word-break: break-word;
}

@media (max-width: 760px) {
    .config-row {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .llm-config > .btn-config {
        width: 100%;
    }

    .llm-config > .btn-config + .btn-config {
        margin-left: 0;
        margin-top: 10px;
    }
}

@media (max-width: 640px) {
    .chat-input {
        grid-template-columns: 1fr;
    }

    .chat-input .btn-save {
        width: 100%;
    }

    .message {
        max-width: 100%;
    }
}