.datachieve-ai-chat {
    --ai-guide-bg: #f7f5f0;
    --ai-guide-panel: #ffffff;
    --ai-guide-border: #dedbd3;
    --ai-guide-accent: #004b50;
    --ai-guide-text: #1c1c1c;
    --ai-guide-muted: #64615a;

    background: linear-gradient(135deg, #f7f5f0 0%, #efeae0 100%);
    border: 1px solid var(--ai-guide-border);
    border-radius: 16px;
    padding: 20px;
    color: var(--ai-guide-text);
    max-width: 720px;
    margin: 24px auto;
    font-family: "Source Serif 4", "Georgia", serif;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.08);
}

.datachieve-ai-chat__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.datachieve-ai-chat__title {
    font-size: 20px;
    font-weight: 600;
}

.datachieve-ai-chat__admin-banner {
    margin-bottom: 12px;
    padding: 8px 12px;
    border-radius: 10px;
    background: rgba(0, 75, 80, 0.08);
    border: 1px dashed var(--ai-guide-accent);
    color: var(--ai-guide-accent);
    font-size: 13px;
    font-weight: 600;
}

.datachieve-ai-chat__messages {
    background: var(--ai-guide-panel);
    border: 1px solid var(--ai-guide-border);
    border-radius: 12px;
    padding: 16px;
    min-height: 240px;
    max-height: 360px;
    overflow-y: auto;
}

.datachieve-ai-chat__message {
    display: flex;
    margin-bottom: 12px;
}

.datachieve-ai-chat__message--user {
    justify-content: flex-end;
}

.datachieve-ai-chat__message--assistant {
    justify-content: flex-start;
}

.datachieve-ai-chat__bubble {
    max-width: 80%;
    padding: 10px 14px;
    border-radius: 14px;
    font-size: 15px;
    line-height: 1.4;
    background: #f2efe8;
}

.datachieve-ai-chat__message--user .datachieve-ai-chat__bubble {
    background: var(--ai-guide-accent);
    color: #ffffff;
}

.datachieve-ai-chat__form {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 12px;
    margin-top: 16px;
}

.datachieve-ai-chat__input {
    resize: vertical;
    border-radius: 10px;
    border: 1px solid var(--ai-guide-border);
    padding: 10px 12px;
    font-size: 15px;
    font-family: inherit;
}

.datachieve-ai-chat__button {
    background: var(--ai-guide-accent);
    color: #ffffff;
    border: none;
    border-radius: 10px;
    padding: 10px 18px;
    font-size: 15px;
    cursor: pointer;
}

.datachieve-ai-chat__button[disabled] {
    opacity: 0.7;
    cursor: not-allowed;
}

@media (max-width: 600px) {
    .datachieve-ai-chat {
        margin: 16px;
        padding: 16px;
    }

    .datachieve-ai-chat__form {
        grid-template-columns: 1fr;
    }
}