/* ChatGPT-style Knowledge Base AI Chatbot */
.kb-chatbot-wrap {
    --kb-bg: #f7f7f8;
    --kb-surface: #ffffff;
    --kb-border: #e5e5e5;
    --kb-user-bg: #f4f4f4;
    --kb-input-bg: #ffffff;
    --kb-text: #0d0d0d;
    --kb-text-muted: #6e6e80;
    --kb-accent: #19c37d;
    --kb-accent-hover: #17a76c;
    --kb-radius: 18px;
    --kb-input-radius: 22px;
    --kb-recording: #dc2626;
    font-family: "Söhne", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    max-width: 768px;
    margin: 0 auto;
    background: var(--kb-bg);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 0 0 1px rgba(0,0,0,.06), 0 2px 8px rgba(0,0,0,.08);
    display: flex;
    flex-direction: column;
    min-height: 560px;
    max-height: 85vh;
}

.kb-chatbot-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 16px;
    background: var(--kb-surface);
    border-bottom: 1px solid var(--kb-border);
}

.kb-chatbot-title {
    margin: 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--kb-text);
}

.kb-chatbot-header-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.kb-chatbot-connect-human-btn {
    padding: 6px 12px;
    border: 1px solid var(--kb-border);
    border-radius: 8px;
    background: var(--kb-surface);
    color: var(--kb-text);
    font-size: 12px;
    cursor: pointer;
    white-space: nowrap;
    transition: background .15s, border-color .15s;
}
.kb-chatbot-connect-human-btn:hover {
    background: var(--kb-bg);
    border-color: var(--kb-accent);
    color: var(--kb-accent);
}

.kb-chatbot-model-select {
    padding: 6px 12px;
    border: 1px solid var(--kb-border);
    border-radius: 8px;
    background: var(--kb-surface);
    color: var(--kb-text);
    font-size: 13px;
    cursor: pointer;
}

.kb-chatbot-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.kb-chatbot-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.kb-chatbot-msg {
    display: flex;
    flex-direction: column;
    max-width: 100%;
}

.kb-chatbot-msg-user {
    align-items: flex-end;
}

.kb-chatbot-msg-assistant {
    align-items: flex-start;
}

.kb-chatbot-msg-label {
    font-size: 12px;
    font-weight: 600;
    color: var(--kb-text-muted);
    margin-bottom: 6px;
    display: block;
}

.kb-chatbot-msg-user .kb-chatbot-msg-label { margin-right: 4px; }

.kb-chatbot-msg-text {
    position: relative;
    padding: 12px 16px;
    border-radius: var(--kb-radius);
    font-size: 15px;
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-word;
    max-width: 85%;
}

.kb-chatbot-msg-body { 
    display: block; 
    padding-right: 72px; 
}
.kb-chatbot-msg-body .kb-chatbot-msg-link {
    color: #2563eb;
    text-decoration: underline;
    word-break: break-all;
}
.kb-chatbot-msg-body .kb-chatbot-msg-link:hover {
    color: #1d4ed8;
}

.kb-chatbot-msg-body .kb-chatbot-buy-btn {
    display: inline-block;
    margin: 6px 0;
    padding: 8px 14px;
    background: var(--kb-accent, #19c37d);
    color: #fff;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9em;
    border: none;
    cursor: pointer;
    transition: background .15s;
}
.kb-chatbot-msg-body .kb-chatbot-buy-btn:hover {
    background: var(--kb-accent-hover, #17a76c);
    color: #fff;
}

.kb-chatbot-msg-actions {
    position: absolute;
    top: 8px;
    right: 8px;
    display: flex;
    gap: 4px;
    align-items: center;
}
.kb-chatbot-copy-btn,
.kb-chatbot-speak-btn {
    width: 28px;
    height: 28px;
    border: none;
    background: transparent;
    border-radius: 6px;
    cursor: pointer;
    color: var(--kb-text-muted);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background .15s, color .15s;
}
.kb-chatbot-copy-btn:hover,
.kb-chatbot-speak-btn:hover {
    background: var(--kb-border);
    color: var(--kb-text);
}
.kb-chatbot-copy-btn.kb-chatbot-copied { color: var(--kb-accent, #19c37d); }
.kb-chatbot-copy-btn svg,
.kb-chatbot-speak-btn svg { width: 16px; height: 16px; }

.kb-chatbot-msg-user .kb-chatbot-msg-text {
    background: var(--kb-user-bg);
    color: var(--kb-text);
    border: 1px solid var(--kb-border);
}

.kb-chatbot-msg-attachments {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 10px;
}

.kb-chatbot-msg-doc-card {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    font-size: 13px;
    color: var(--kb-text);
    background: rgba(0,0,0,0.05);
    border: 1px solid var(--kb-border);
    border-radius: 8px;
    max-width: 200px;
    min-width: 0;
}

.kb-chatbot-msg-doc-card .kb-chatbot-doc-icon {
    flex-shrink: 0;
    color: var(--kb-text-muted);
}

.kb-chatbot-msg-doc-card .kb-chatbot-msg-doc-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.kb-chatbot-msg-assistant .kb-chatbot-msg-text {
    background: var(--kb-surface);
    color: var(--kb-text);
    border: 1px solid var(--kb-border);
}

.kb-chatbot-msg-error .kb-chatbot-msg-text {
    background: #fef2f2;
    color: #b91c1c;
    border-color: #fecaca;
}

.kb-chatbot-loading .kb-chatbot-msg-text { padding: 16px 20px; }

.kb-chatbot-loading-dots {
    display: flex;
    gap: 4px;
    align-items: center;
}

.kb-chatbot-loading-dots span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--kb-text-muted);
    animation: kb-dot 1.4s ease-in-out infinite both;
}

.kb-chatbot-loading-dots span:nth-child(1) { animation-delay: 0s; }
.kb-chatbot-loading-dots span:nth-child(2) { animation-delay: .2s; }
.kb-chatbot-loading-dots span:nth-child(3) { animation-delay: .4s; }

@keyframes kb-dot {
    0%, 80%, 100% { transform: scale(0.6); opacity: .5; }
    40% { transform: scale(1); opacity: 1; }
}


/* Composer */
.kb-chatbot-composer {
    padding: 12px 16px 16px;
    background: var(--kb-surface);
    border-top: 1px solid var(--kb-border);
}

.kb-chatbot-attachments {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 10px;
    min-height: 0;
}

.kb-chatbot-attachments:empty { display: none; }

.kb-chatbot-attach-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    background: var(--kb-bg);
    border: 1px solid var(--kb-border);
    border-radius: 12px;
    font-size: 13px;
    color: var(--kb-text);
    max-width: 180px;
}

.kb-chatbot-attach-pill.kb-chatbot-uploading {
    opacity: 0.6;
    animation: kb-pulse 1.5s ease-in-out infinite;
}

@keyframes kb-pulse {
    0%, 100% { opacity: 0.6; }
    50% { opacity: 1; }
}

.kb-chatbot-attach-pill span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.kb-chatbot-attach-pill .kb-chatbot-pill-remove {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
    border: none;
    background: transparent;
    border-radius: 50%;
    color: var(--kb-text-muted);
    cursor: pointer;
    padding: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    line-height: 1;
}

.kb-chatbot-attach-pill .kb-chatbot-pill-remove:hover {
    background: var(--kb-border);
    color: var(--kb-text);
}

.kb-chatbot-ocr-notice {
    margin-top: 6px;
    padding: 8px 10px;
    font-size: 12px;
    color: #856404;
    background: #fff3cd;
    border: 1px solid #ffc107;
    border-radius: 8px;
    line-height: 1.4;
}

/* Voice transcript display */
.kb-chatbot-voice-transcript {
    padding: 10px 14px;
    margin-bottom: 8px;
    background: rgba(25, 195, 125, 0.1);
    border: 1px solid var(--kb-accent);
    border-radius: 12px;
    font-size: 14px;
    color: var(--kb-text);
    line-height: 1.4;
    animation: kb-fade-in 0.2s ease-in;
}

@keyframes kb-fade-in {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}

.kb-chatbot-input-row {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    padding: 10px 14px;
    background: var(--kb-input-bg);
    border: 1px solid var(--kb-border);
    border-radius: var(--kb-input-radius);
    transition: border-color .15s, box-shadow .15s;
}

.kb-chatbot-input-row:focus-within {
    border-color: var(--kb-accent);
    box-shadow: 0 0 0 1px var(--kb-accent);
}

.kb-chatbot-icon-btn {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    border-radius: 50%;
    color: var(--kb-text-muted);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background .15s, color .15s;
    user-select: none;
    -webkit-user-select: none;
}

.kb-chatbot-icon-btn:hover {
    background: var(--kb-bg);
    color: var(--kb-text);
}

.kb-chatbot-icon-btn:disabled {
    opacity: .5;
    cursor: not-allowed;
}

/* Recording state */
.kb-chatbot-voice-recording {
    background: var(--kb-recording) !important;
    color: #fff !important;
    animation: kb-recording-pulse 1.5s ease-in-out infinite;
}

@keyframes kb-recording-pulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.1); opacity: 0.9; }
}

.kb-chatbot-input {
    flex: 1;
    min-height: 24px;
    max-height: 200px;
    padding: 8px 4px;
    border: none;
    background: transparent;
    font-size: 15px;
    line-height: 1.5;
    resize: none;
    font-family: inherit;
    color: var(--kb-text);
}

.kb-chatbot-input::placeholder { color: var(--kb-text-muted); }
.kb-chatbot-input:focus { outline: none; }

.kb-chatbot-send-btn {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border: none;
    background: var(--kb-accent);
    color: #fff;
    border-radius: 50%;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background .15s, transform .1s;
}

.kb-chatbot-send-btn:hover:not(:disabled) {
    background: var(--kb-accent-hover);
}

.kb-chatbot-send-btn:disabled {
    opacity: .5;
    cursor: not-allowed;
}

/* Connect with human – overlay and form */
.kb-chatbot-contact-overlay {
    display: none;
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.4);
    z-index: 100;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
}
.kb-chatbot-contact-overlay.kb-chatbot-contact-open {
    display: flex;
}
.kb-chatbot-contact-modal {
    background: var(--kb-surface);
    border-radius: 12px;
    padding: 20px;
    max-width: 360px;
    width: calc(100% - 24px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}
.kb-chatbot-contact-title {
    margin: 0 0 16px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--kb-text);
}
.kb-chatbot-contact-form label {
    display: block;
    margin-bottom: 4px;
    font-size: 13px;
    color: var(--kb-text-muted);
}
.kb-chatbot-contact-input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid var(--kb-border);
    border-radius: 8px;
    font-size: 14px;
    margin-bottom: 12px;
    box-sizing: border-box;
}
.kb-chatbot-contact-input:focus {
    outline: none;
    border-color: var(--kb-accent);
}
.kb-chatbot-contact-feedback {
    font-size: 13px;
    margin-bottom: 12px;
    padding: 8px;
    border-radius: 8px;
}
.kb-chatbot-contact-feedback.kb-chatbot-contact-success {
    background: rgba(25, 195, 125, 0.15);
    color: var(--kb-accent);
}
.kb-chatbot-contact-feedback.kb-chatbot-contact-error {
    background: rgba(220, 38, 38, 0.1);
    color: #b91c1c;
}
.kb-chatbot-contact-buttons {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    margin: 0;
}
.kb-chatbot-contact-cancel,
.kb-chatbot-contact-submit {
    padding: 8px 16px;
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    border: 1px solid var(--kb-border);
    background: var(--kb-surface);
    color: var(--kb-text);
}
.kb-chatbot-contact-cancel:hover {
    background: var(--kb-bg);
}
.kb-chatbot-contact-submit {
    background: var(--kb-accent);
    color: #fff;
    border-color: var(--kb-accent);
}
.kb-chatbot-contact-submit:hover:not(:disabled) {
    background: var(--kb-accent-hover);
}
.kb-chatbot-contact-submit:disabled {
    opacity: .7;
    cursor: not-allowed;
}

/* Floating widget (bottom-right button + panel) */
.kb-chatbot-float-wrap {
    position: fixed;
    bottom: 0;
    right: 0;
    z-index: 999998;
    font-family: inherit;
}

.kb-chatbot-float-btn {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    border: none;
    background: var(--kb-accent, #2563eb);
    color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.2);
    transition: transform .2s, box-shadow .2s;
}

.kb-chatbot-float-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.25);
}

.kb-chatbot-float-panel {
    display: none;
    position: fixed;
    bottom: 84px;
    right: 20px;
    width: 380px;
    max-width: calc(100vw - 40px);
    max-height: min(560px, calc(100vh - 100px));
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
    border-radius: 12px;
    overflow: hidden;
    z-index: 999997;
}

.kb-chatbot-float-panel.kb-chatbot-float-panel-open {
    display: block;
}

.kb-chatbot-float-panel .kb-chatbot-wrap {
    width: 100%;
    height: 100%;
    max-height: min(560px, calc(100vh - 100px));
}

/* Mobile responsiveness */
@media (max-width: 640px) {
    .kb-chatbot-wrap {
        max-height: 90vh;
    }
    
    .kb-chatbot-msg-text {
        max-width: 90%;
    }

    .kb-chatbot-float-panel {
        right: 10px;
        bottom: 76px;
        width: calc(100vw - 20px);
        max-height: calc(100vh - 96px);
    }

    .kb-chatbot-float-btn {
        bottom: 16px;
        right: 16px;
    }
}