/* css/chat.css */

/* ============================================================================
   CSS VARIABLES (matching standalone app)
   ============================================================================ */

:root {
    /* Neutrals */
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #f1f3f4;
    --bg-hover: #e8eaed;
    --bg-active: #dfe1e4;
    
    /* Borders */
    --border-light: #e5e7eb;
    --border-default: #d1d5db;
    --border-strong: #9ca3af;
    
    /* Text */
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-tertiary: #6b7280;
    --text-muted: #9ca3af;
    
    /* Primary */
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-muted: #dbeafe;
    
    /* Semantic */
    --success: #059669;
    --success-muted: #d1fae5;
    --error: #dc2626;
    --error-muted: #fee2e2;
    --warning: #d97706;
    --warning-muted: #fef3c7;
    
    /* Claude/Assistant */
    --claude-primary: #c96442;
    --claude-muted: #f5f5f5;
    --claude-border: #f0d9cf;
    --claude-text: #9a4a2c;
    
    /* User */
    --user-primary: #0891b2;
    --user-muted: #e3f2fd;
    --user-border: #b3c7d6;
    --user-text: #0e7490;
    
    /* Code */
    --code-bg: #1f2937;
    --code-text: #e5e7eb;
}

/* ============================================================================
   CHAT MESSAGES CONTAINER
   ============================================================================ */

#chat-messages {
    height: 100%;
    overflow-y: auto;
    padding: 12px 16px;
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* ============================================================================
   WELCOME STATE
   ============================================================================ */

.chat-welcome {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    min-height: 200px;
}

.chat-welcome .placeholder {
    text-align: center;
    padding: 24px 14px;
    color: var(--text-tertiary);
}

.chat-welcome .placeholder-icon {
    font-size: 36px;
    color: var(--border-default);
    margin-bottom: 10px;
    display: block;
}

.chat-welcome .placeholder-text {
    margin: 0;
    font-size: 12px;
}

.chat-welcome code {
    background: #f0f0f0;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
    font-size: 11px;
}

/* ============================================================================
   MESSAGES (flat timeline layout)
   ============================================================================ */

.chat-message {
    padding: 10px 14px;
    border-radius: 0;
    border: none;
    border-left: 3px solid transparent;
    animation: messageIn 0.2s ease;
    width: auto;
    max-width: none;
    min-width: 0;
}

.chat-message + .chat-message {
    border-top: 1px solid var(--border-light);
}

@keyframes messageIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* User messages */
.chat-message.user {
    background: var(--bg-primary);
    border-left-color: var(--user-primary);
}

/* Assistant messages */
.chat-message.assistant {
    background: var(--bg-primary);
    border-left-color: var(--claude-primary);
}

/* Error messages */
.chat-message.error {
    background: var(--error-muted);
    border-left-color: var(--error);
}

/* System messages - centered, subtle styling */
.chat-message.system {
    background: var(--bg-tertiary);
    border-left-color: transparent;
    align-self: center;
    max-width: 90%;
    text-align: center;
    padding: 6px 12px;
    border-radius: 6px;
}

.chat-message.system .message-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-secondary);
}

.chat-message.system .system-icon {
    font-size: 14px;
    flex-shrink: 0;
}

/* System message types */
.chat-message.system.system-info {
    background: var(--bg-tertiary);
    border-color: var(--border-light);
}

.chat-message.system.system-info .system-icon {
    color: var(--primary);
}

.chat-message.system.system-warning {
    background: #fffbeb;
    border-color: #fde68a;
}

.chat-message.system.system-warning .system-icon {
    color: var(--warning);
}

.chat-message.system.system-success {
    background: #f0fdf4;
    border-color: #bbf7d0;
}

.chat-message.system.system-success .system-icon {
    color: var(--success);
}

.chat-message.system.system-error {
    background: var(--error-muted);
    border-color: #fecaca;
}

.chat-message.system.system-error .system-icon {
    color: var(--error);
}

.chat-message.system.system-stopped {
    background: #fffbeb;
    border-color: #fde68a;
}

.chat-message.system.system-stopped .system-icon {
    color: #f59e0b;
}

.chat-message.system.system-limit {
    background: #fffbeb;
    border-color: #fde68a;
}

.chat-message.system.system-limit .system-icon {
    color: #f59e0b;
}

/* Role labels */
.message-role {
    font-size: 9px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-tertiary);
    margin-bottom: 4px;
}

.chat-message.user .message-role {
    color: var(--user-text);
}

.chat-message.assistant .message-role {
    color: var(--claude-text);
}

/* Message content */
.message-content {
    font-size: 13px;
    line-height: 1.5;
    color: var(--text-primary);
    user-select: text;
    cursor: text;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.chat-message.user .message-content {
    text-align: left;
}

.chat-message.error .message-content {
    color: var(--error);
}

/* ============================================================================
   MESSAGE TEXT & MARKDOWN
   ============================================================================ */

.message-text {
    white-space: pre-wrap;
}

.message-text + .message-text,
.message-text + .message-code-block,
.message-code-block + .message-text {
    margin-top: 8px;
}

.message-content h1,
.message-content h2,
.message-content h3,
.message-content h4 {
    margin: 0.4em 0 0.2em 0;
    font-weight: 600;
    line-height: 1.3;
    color: var(--text-primary);
}

.message-content h1 { font-size: 1.15em; }
.message-content h2 { font-size: 1.08em; }
.message-content h3 { font-size: 1.02em; }
.message-content h4 { font-size: 1em; }

.message-content p {
    margin: 0.25em 0;
}

.message-content ul,
.message-content ol {
    margin: 0.25em 0;
    padding-left: 1.3em;
}

.message-content li {
    margin: 0.1em 0;
}

.message-content li > p {
    margin: 0;
}

.message-content code {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-light);
    padding: 0.1em 0.3em;
    border-radius: 3px;
    font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
    font-size: 0.9em;
    color: var(--text-primary);
}

.message-content pre {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-light);
    padding: 8px 10px;
    border-radius: 4px;
    overflow-x: auto;
    margin: 0.3em 0;
}

.message-content pre code {
    background: none;
    border: none;
    padding: 0;
    font-size: 12px;
}

.message-content blockquote {
    border-left: 2px solid var(--border-strong);
    margin: 0.3em 0;
    padding-left: 0.7em;
    color: var(--text-secondary);
}

.message-content a {
    color: var(--primary);
    text-decoration: none;
}

.message-content a:hover {
    text-decoration: underline;
}

.message-content > *:first-child {
    margin-top: 0;
}

.message-content > *:last-child {
    margin-bottom: 0;
}

/* Context-specific code styling */
.chat-message.assistant .message-content code {
    background: var(--claude-border);
    border-color: #e6c4b5;
}

.chat-message.user .message-content code {
    background: var(--user-border);
    border-color: #67e8f9;
}

/* ============================================================================
   CODE BLOCKS IN MESSAGES
   ============================================================================ */

.message-code-block {
    background: var(--code-bg);
    border-radius: 4px;
    margin: 4px 0;
    overflow: hidden;
}

.message-code-block:first-child {
    margin-top: 0;
}

.message-code-block:last-child {
    margin-bottom: 0;
}

.message-code-block .code-header {
    display: flex;
    align-items: center;
    padding: 4px 8px;
    background: #111827;
    border-bottom: 1px solid #374151;
}

.message-code-block .code-language {
    font-size: 10px;
    font-weight: 600;
    color: #9ca3af;
    flex: 1;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.message-code-block .code-content {
    padding: 8px 10px;
    margin: 0;
    overflow-x: auto;
    font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
    font-size: 12px;
    line-height: 1.4;
    color: var(--code-text);
    user-select: text;
    cursor: text;
}

.message-code-block .code-content code {
    font-family: inherit;
    background: none;
    border: none;
    padding: 0;
    color: inherit;
}

/* Code action buttons */
.code-actions {
    display: flex;
    gap: 4px;
}

.code-btn {
    padding: 3px 8px;
    min-width: 52px;
    font-size: 10px;
    font-weight: 500;
    border: none;
    border-radius: 3px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    transition: all 0.1s ease;
    background: #374151;
    color: #f3f4f6;
    border: 1px solid #4b5563;
}

.code-btn:hover {
    background: #4b5563;
    color: #ffffff;
}

.code-btn.copied {
    background: var(--success);
    border-color: var(--success);
    color: #ffffff;
}

.code-btn.run-btn {
    background: var(--success);
    color: #ffffff;
    border-color: var(--success);
}

.code-btn.run-btn:hover {
    background: #047857;
}

/* ============================================================================
   TOOL CALL TIMELINE ENTRIES
   ============================================================================ */

.tool-call {
    padding: 0;
    border-left: 3px solid var(--border-default);
    background: var(--bg-secondary);
    animation: messageIn 0.2s ease;
}

.tool-call + .chat-message,
.chat-message + .tool-call,
.tool-call + .tool-call {
    border-top: 1px solid var(--border-light);
}

.tool-call.running {
    border-left-color: var(--border-strong);
}

.tool-call.success {
    border-left-color: var(--success);
}

.tool-call.error {
    border-left-color: var(--error);
}

/* Header row — always visible */
.tool-call-header {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    cursor: pointer;
    user-select: none;
}

.tool-call-header:hover {
    background: var(--bg-hover);
}

.tool-call-icon {
    font-size: 12px;
    color: var(--text-tertiary);
    flex-shrink: 0;
    width: 16px;
    text-align: center;
}

.tool-call.success .tool-call-icon {
    color: var(--success);
}

.tool-call.error .tool-call-icon {
    color: var(--error);
}

.tool-call-name {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-primary);
    font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
}

.tool-call-status {
    font-size: 10px;
    font-weight: 500;
    padding: 2px 8px;
    border-radius: 10px;
    margin-left: auto;
}

.tool-call.running .tool-call-status {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

.tool-call.success .tool-call-status {
    background: var(--success-muted);
    color: var(--success);
}

.tool-call.error .tool-call-status {
    background: var(--error-muted);
    color: var(--error);
}

.tool-call-toggle {
    font-size: 10px;
    color: var(--text-muted);
    flex-shrink: 0;
    transition: transform 0.15s ease;
}

.tool-call.expanded .tool-call-toggle {
    transform: rotate(90deg);
}

/* Body — collapsible */
.tool-call-body {
    padding: 0 12px 10px;
    display: none;
}

.tool-call.expanded .tool-call-body {
    display: block;
}

/* Code block inside tool call */
.tool-call-code {
    background: var(--code-bg);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 8px;
}

.tool-call-code pre {
    margin: 0;
    padding: 8px 10px;
    font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
    font-size: 11px;
    line-height: 1.4;
    color: var(--code-text);
    overflow-x: auto;
    max-height: 200px;
    overflow-y: auto;
}

/* Output summary */
.tool-call-output {
    font-size: 11px;
    color: var(--text-secondary);
}

.tool-call-output-item {
    display: flex;
    align-items: flex-start;
    gap: 6px;
    padding: 3px 0;
    font-family: 'SF Mono', 'Consolas', 'Monaco', monospace;
    line-height: 1.4;
}

.tool-call-output-item i {
    font-size: 10px;
    margin-top: 2px;
    flex-shrink: 0;
}

.tool-call-output-item.stdout i { color: var(--text-muted); }
.tool-call-output-item.stderr i { color: var(--warning); }
.tool-call-output-item.error i { color: var(--error); }
.tool-call-output-item.output i { color: var(--success); }

.tool-call-output-item pre {
    margin: 0;
    white-space: pre-wrap;
    word-break: break-all;
    font-size: inherit;
    font-family: inherit;
    color: inherit;
    background: none;
    border: none;
    padding: 0;
}

/* ============================================================================
   ASK USER QUESTION OVERLAY
   ============================================================================ */

.ask-user-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 16px;
    z-index: 10;
    animation: messageIn 0.2s ease;
}

.ask-user-question {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-primary);
    text-align: center;
    max-width: 400px;
}

.ask-user-options {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
}

.ask-user-option {
    padding: 6px 14px;
    border: 1px solid var(--border-default);
    border-radius: 4px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 12px;
    cursor: pointer;
    transition: all 0.1s ease;
}

.ask-user-option:hover {
    background: var(--primary-muted);
    border-color: var(--primary);
    color: var(--primary);
}

.ask-user-input-row {
    display: flex;
    gap: 6px;
    width: 100%;
    max-width: 400px;
}

.ask-user-input {
    flex: 1;
    padding: 6px 10px;
    border: 1px solid var(--border-default);
    border-radius: 4px;
    font-size: 12px;
    outline: none;
}

.ask-user-input:focus {
    border-color: var(--primary);
}

/* ============================================================================
   STREAMING CURSOR
   ============================================================================ */

.chat-message.streaming .message-content {
    min-height: 20px;
}

.streaming-cursor {
    display: inline-block;
    width: 8px;
    height: 16px;
    background: var(--claude-primary);
    margin-left: 2px;
    vertical-align: text-bottom;
    animation: blink 0.8s step-end infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

/* ============================================================================
   CHAT INPUT AREA
   ============================================================================ */

#chat-input-area {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: 8px 10px;
    padding-bottom: clamp(40px, 5vh, 50px);
    background: #fff;
    border-top: 1px solid var(--border-light);
    gap: 8px;
}

#chat-input-controls {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#chat-controls-left {
    display: flex;
    gap: 6px;
}

#chat-controls-right {
    display: flex;
    gap: 6px;
    align-items: center;
}

#chat-buttons {
    display: flex;
    gap: 4px;
}

/* ============================================================================
   ITERATIONS CONTROL
   ============================================================================ */

.iterations-control {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    padding: 4px 6px;
    background: var(--bg-primary);
    border: 1px solid var(--border-default);
    border-radius: 4px;
    transition: opacity 0.2s ease;
    width: 52px;
    height: 28px;
    box-sizing: border-box;
}

.iterations-control i {
    font-size: 10px;
    color: var(--text-tertiary);
}

.iterations-control input[type="number"] {
    width: 24px;
    padding: 2px 0;
    border: none;
    background: transparent;
    font-size: 11px;
    font-weight: 500;
    color: var(--text-primary);
    text-align: center;
}

.iterations-control input[type="number"]::-webkit-outer-spin-button,
.iterations-control input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.iterations-control input[type="number"]:focus {
    outline: none;
}

.iterations-control:focus-within {
    border-color: var(--primary);
}

/* ============================================================================
   MODEL SELECT
   ============================================================================ */

.model-select {
    display: flex;
    align-items: center;
    background: var(--bg-primary);
    border: 1px solid var(--border-default);
    border-radius: 4px;
    height: 28px;
    box-sizing: border-box;
}

.model-select select {
    padding: 4px 8px;
    border: none;
    background: transparent;
    font-size: 11px;
    font-weight: 500;
    color: var(--text-primary);
    cursor: pointer;
    outline: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    padding-right: 20px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='8' viewBox='0 0 8 8'%3E%3Cpath fill='%236b7280' d='M0 2l4 4 4-4z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 6px center;
}

.model-select select:focus {
    outline: none;
}

.model-select:focus-within {
    border-color: var(--primary);
}

/* ============================================================================
   MODEL SELECTOR BUTTON (replaces <select>)
   ============================================================================ */

.model-selector-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    background: var(--bg-primary);
    border: 1px solid var(--border-default);
    border-radius: 4px;
    height: 28px;
    box-sizing: border-box;
    cursor: pointer;
    font-size: 11px;
    font-weight: 500;
    color: var(--text-primary);
    transition: border-color 0.15s ease;
    max-width: 200px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.model-selector-btn:hover {
    border-color: var(--primary);
}

.model-selector-btn i {
    font-size: 9px;
    color: var(--text-tertiary);
    flex-shrink: 0;
}

/* ============================================================================
   MODEL PICKER MODAL
   ============================================================================ */

.model-picker {
    display: flex;
    flex-direction: column;
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.model-picker-search {
    padding: 12px;
    border-bottom: 1px solid #eee;
}

.model-picker-search input {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 13px;
    box-sizing: border-box;
}

.model-picker-search input:focus {
    outline: none;
    border-color: var(--primary);
}

.model-picker-list {
    flex: 1;
    overflow-y: auto;
    padding: 0;
}

.model-picker-item {
    display: flex;
    align-items: center;
    padding: 8px 12px;
    cursor: pointer;
    border-bottom: 1px solid #f5f5f5;
    font-size: 13px;
    gap: 8px;
}

.model-picker-item:hover {
    background: #f0f4ff;
}

.model-picker-item.selected {
    background: #e8f0fe;
    border-left: 3px solid var(--primary);
}

.model-picker-item-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: #333;
}

.model-picker-item-cost {
    font-size: 11px;
    color: #888;
    white-space: nowrap;
    text-align: right;
    min-width: 120px;
}

.model-picker-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px;
    color: #999;
    font-size: 13px;
    gap: 8px;
}

.model-picker-empty {
    padding: 20px;
    text-align: center;
    color: #999;
    font-size: 13px;
}

/* ============================================================================
   CHAT BUTTONS
   ============================================================================ */

.chat-btn {
    padding: 6px 14px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 12px;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    transition: all 0.1s ease;
    width: 52px;
    height: 28px;
    box-sizing: border-box;
}

.chat-btn.primary {
    background: var(--primary);
    color: white;
}

.chat-btn.primary:hover {
    background: var(--primary-hover);
}

.chat-btn.primary:disabled {
    background: var(--border-default);
    cursor: not-allowed;
}

.chat-btn.danger {
    background: var(--error);
    color: white;
}

.chat-btn.danger:hover {
    background: #b91c1c;
}

.chat-btn.secondary {
    background: var(--bg-primary);
    color: var(--text-secondary);
    border: 1px solid var(--border-default);
}

.chat-btn.secondary:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.chat-btn.secondary.has-files {
    background: var(--primary-muted);
    border-color: var(--primary);
    color: var(--primary);
}

.upload-count {
    font-size: 11px;
    font-weight: 600;
}

/* ============================================================================
   TIPTAP EDITOR
   ============================================================================ */

.tiptap-container { 
    flex: 1;
    min-height: 60px;
    display: flex; 
    flex-direction: column; 
    background: #fff;
    border: 1px solid var(--border-default);
    border-radius: 4px;
    overflow: hidden;
}

.tiptap-container:focus-within {
    border-color: var(--primary);
}

.tiptap-container .editor {
    flex: 1;
    padding: 6px 10px;
    outline: none;
    font-size: 13px;
    line-height: 1.5;
    overflow-y: auto;
}

.tiptap-container .editor p { 
    margin: 0; 
}

.tiptap-container .editor p.is-editor-empty:first-child::before {
    content: attr(data-placeholder);
    color: var(--text-muted);
    pointer-events: none;
    float: left;
    height: 0;
}

/* ============================================================================
   MENTION CHIPS (inline in editor)
   ============================================================================ */

.mention {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: #f0f4f8;
    border: 1px solid #d0d7de;
    border-radius: 4px;
    padding: 2px 6px;
    font-size: 12px;
    font-weight: 500;
    vertical-align: baseline;
}

.mention.database { border-left: 3px solid #28a745; }
.mention.table { border-left: 3px solid #007bff; }
.mention.field { border-left: 3px solid #6f42c1; }

/* ============================================================================
   SLASH COMMAND CHIPS (inline in editor)
   ============================================================================ */

.slash-command {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: #fff3e0;
    border: 1px solid #ffcc80;
    border-radius: 4px;
    padding: 2px 6px;
    font-size: 12px;
    font-weight: 500;
    font-family: 'SF Mono', Monaco, 'Cascadia Code', monospace;
    vertical-align: baseline;
}

.slash-command.function { border-left: 3px solid #e65100; }
.slash-command.output { border-left: 3px solid #2196f3; }

/* ============================================================================
   DROPDOWN MENUS (shared styles)
   ============================================================================ */

.mention-dropdown, 
.slash-dropdown {
    background: #fff;
    border: 1px solid #dee2e6;
    border-radius: 6px;
    box-shadow: 0 6px 20px rgba(0,0,0,0.12);
    min-width: 250px;
    max-height: 300px;
    font-size: 13px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Breadcrumb navigation */
.dropdown-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: #f8f9fa;
    border-bottom: 1px solid #eee;
    font-size: 11px;
    flex-shrink: 0;
}

.bc-back {
    width: 22px;
    height: 22px;
    background: #fff;
    border: 1px solid #dee2e6;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #666;
    font-size: 10px;
}

.bc-back:hover { 
    background: #e9ecef; 
    color: #333;
}

.bc-path { 
    display: flex; 
    align-items: center; 
    gap: 4px; 
}

.bc-segment { 
    color: #333; 
    font-weight: 500; 
}

.bc-separator { 
    color: #aaa; 
}

.bc-icon { 
    font-size: 10px; 
}

/* Scrollable items area */
.dropdown-items { 
    flex: 1; 
    overflow-y: auto; 
}

/* Section headers */
.dropdown-section {
    padding: 6px 12px;
    font-size: 10px;
    text-transform: uppercase;
    font-weight: 600;
    color: #999;
    background: #fafafa;
    border-bottom: 1px solid #eee;
    position: sticky;
    top: 0;
    z-index: 1;
}

/* Individual items */
.dropdown-item, 
.slash-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    cursor: pointer;
    border-bottom: 1px solid #f5f5f5;
}

.dropdown-item:last-child,
.slash-item:last-child { 
    border-bottom: none; 
}

.dropdown-item:hover, 
.dropdown-item.active,
.slash-item:hover, 
.slash-item.active { 
    background: #f0f4ff; 
}

/* Item icons */
.item-icon { 
    width: 18px; 
    text-align: center; 
    font-size: 12px;
    flex-shrink: 0;
}

.item-icon.database { color: #28a745; }
.item-icon.table { color: #007bff; }
.item-icon.field { color: #6f42c1; }
.item-icon.function { color: #e65100; }
.item-icon.output { color: #2196f3; }

/* Item labels */
.item-label { 
    flex: 1; 
    overflow: hidden; 
    text-overflow: ellipsis; 
    white-space: nowrap;
    color: #333;
}

/* Item description (for databases) */
.item-desc {
    font-size: 11px;
    color: #888;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 150px;
}

/* Item badges (data types) */
.item-badge { 
    font-size: 9px; 
    padding: 2px 6px; 
    border-radius: 3px; 
    background: #e9ecef; 
    color: #666;
    text-transform: uppercase;
    flex-shrink: 0;
}

/* Drill-down arrow */
.item-arrow { 
    color: #ccc; 
    font-size: 10px;
    flex-shrink: 0;
}

.dropdown-item:hover .item-arrow { 
    color: #666; 
}

/* Empty state */
.dropdown-empty { 
    padding: 20px; 
    text-align: center; 
    color: #999; 
}

/* Footer with keyboard hints */
.dropdown-footer {
    padding: 8px 12px;
    font-size: 10px;
    color: #999;
    background: #fafafa;
    border-top: 1px solid #eee;
    display: flex;
    gap: 12px;
    flex-shrink: 0;
}

.dropdown-footer kbd {
    background: #e9ecef;
    padding: 2px 5px;
    border-radius: 3px;
    font-family: inherit;
    font-size: 9px;
}

/* ============================================================================
   CHAT VIEWER (ARTIFACTS PANEL)
   ============================================================================ */

#chat-viewer-content {
    height: 100%;
    position: relative;
}

#chat-artifact-frame {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

#chat-viewer-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-viewer-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    color: var(--text-tertiary);
    padding: 40px 20px;
}

.chat-viewer-empty i {
    font-size: 36px;
    color: var(--border-default);
    margin-bottom: 10px;
}

.chat-viewer-empty h3 {
    margin: 0 0 4px 0;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.chat-viewer-empty p {
    margin: 0;
    font-size: 12px;
}

/* ============================================================================
   SCROLLBAR
   ============================================================================ */

#chat-messages::-webkit-scrollbar,
.dropdown-items::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

#chat-messages::-webkit-scrollbar-track,
.dropdown-items::-webkit-scrollbar-track {
    background: transparent;
}

#chat-messages::-webkit-scrollbar-thumb,
.dropdown-items::-webkit-scrollbar-thumb {
    background: var(--border-default);
    border-radius: 4px;
}

#chat-messages::-webkit-scrollbar-thumb:hover,
.dropdown-items::-webkit-scrollbar-thumb:hover {
    background: var(--border-strong);
}

/* ============================================================================
   SELECTION
   ============================================================================ */

::selection {
    background: rgba(37, 99, 235, 0.25);
    color: var(--text-primary);
}