/* ============================================
   Chat Message Styling - chat.css (CLEANED v7)
   Applies to: All chat views
   ============================================ */

/* ============================================
   Message Container
   ============================================ */
.message {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md) 0;
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
}

.message.user {
    justify-content: flex-end;
}

.message.assistant {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
}

/* ============================================
   Message Bubbles
   ============================================ */
.message.user .bubble {
    background: var(--color-accent-light);
    color: var(--color-text);
    border-radius: var(--radius-lg) var(--radius-lg) var(--radius-sm) var(--radius-lg);
    max-width: 90%;
    padding: var(--spacing-md);
}

.message.assistant .bubble {
    background: transparent;
    color: var(--color-text);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    line-height: 1.75;
    font-size: 15.5px;
    max-width: 100%;
    padding: var(--spacing-sm);
}

/* ============================================
   Model Badge
   ============================================ */
.model-badge {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    padding: var(--spacing-xs) 0;
    margin-bottom: var(--spacing-xs);
}

/* ============================================
   Search Indicator
   ============================================ */
.search-indicator {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-xs);
    align-self: flex-start;
}

.search-indicator.searching {
    background: linear-gradient(90deg, var(--color-bg-secondary), var(--color-accent-light, rgba(66, 133, 244, 0.1)), var(--color-bg-secondary));
    background-size: 200% 100%;
    animation: searchPulse 2s ease-in-out infinite;
}

.search-indicator.search-done {
    color: var(--color-success, #22c55e);
    background: var(--color-bg-secondary); /* Fallback for older browsers */
    background: color-mix(in srgb, var(--color-success, #22c55e) 10%, var(--color-bg-secondary));
}

.search-indicator.search-error {
    color: var(--color-error, #ef4444);
    background: var(--color-bg-secondary); /* Fallback for older browsers */
    background: color-mix(in srgb, var(--color-error, #ef4444) 10%, var(--color-bg-secondary));
}

/* Standalone search progress bar injected before streaming bubble */
.search-progress-bar {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-xs) 0;
    width: 100%;
    display: flex;
}

@keyframes searchPulse {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.search-indicator .spin {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.search-timer {
    font-variant-numeric: tabular-nums;
}


/* ============================================
   Thinking Block
   ============================================ */
.thinking-block {
    background: color-mix(in srgb, var(--color-accent) 8%, transparent);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    cursor: pointer;
    width: 100%;
    box-sizing: border-box;
}

/* ============================================
   Pipeline Progress (Agent multi-step)
   ============================================ */
.pipeline-progress {
    padding: var(--spacing-sm) 0;
    font-family: var(--font-primary, inherit);
}

.pipeline-header {
    font-size: var(--font-size-md, 15px);
    margin-bottom: var(--spacing-sm, 8px);
    color: var(--color-text-primary);
    padding-bottom: var(--spacing-xs, 4px);
    border-bottom: 1px solid var(--color-border, rgba(0, 0, 0, 0.1));
}

.pipeline-step {
    padding: 4px 0;
    font-size: var(--font-size-sm, 13px);
    color: var(--color-text-secondary);
    transition: opacity 0.3s ease;
}

.pipeline-step.active {
    color: var(--color-text-primary);
    font-weight: 500;
}

.pipeline-step.done {
    opacity: 0.6;
}

.pipeline-step.pending {
    opacity: 0.4;
}

.thinking-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
}

.thinking-mode-badge {
    display: inline-flex;
    align-items: center;
    margin-left: 6px;
    padding: 1px 6px;
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 0.03em;
    color: var(--color-accent, #4285f4);
    background: transparent; /* Fallback for older browsers */
    background: color-mix(in srgb, var(--color-accent, #4285f4) 12%, transparent);
    border-radius: 4px;
    vertical-align: middle;
}

.thinking-content {
    margin-top: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.6;
    white-space: pre-wrap;
    max-height: 300px;
    overflow-y: auto;
    padding-right: 4px;
}

/* ── Thinking → Final Answer Boundary ── */
.thinking-boundary {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: var(--spacing-md) 0 var(--spacing-sm) 0;
    position: relative;
    opacity: 0;
    transform: translateY(-4px);
    animation: boundaryFadeIn 0.45s ease-out 0.15s forwards;
}

.thinking-boundary::before,
.thinking-boundary::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(
        to right,
        transparent,
        color-mix(in srgb, var(--color-accent) 35%, transparent),
        color-mix(in srgb, var(--color-accent) 35%, transparent),
        transparent
    );
}

.thinking-boundary::before {
    margin-right: var(--spacing-md);
}

.thinking-boundary::after {
    margin-left: var(--spacing-md);
}

.thinking-boundary span {
    font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.06em;
    color: var(--color-text-muted);
    white-space: nowrap;
    text-transform: uppercase;
    padding: 2px 10px;
    border-radius: 3px;
    background: color-mix(in srgb, var(--color-accent) 6%, transparent);
    border: 1px solid color-mix(in srgb, var(--color-accent) 15%, transparent);
}

@keyframes boundaryFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.thinking-content.collapsed {
    display: none;
}

/* ── Structured Thinking Sections ── */
.thinking-content h3 {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 10px 0 4px 0;
    padding-bottom: 3px;
    border-bottom: 1px solid color-mix(in srgb, var(--color-border) 40%, transparent);
    color: var(--color-text-secondary);
}

.thinking-content h3:first-child {
    margin-top: 0;
}

.thinking-content ul {
    list-style: none;
    padding-left: 0;
    margin: 2px 0 6px 0;
}

.thinking-content ul li::before {
    content: "›";
    color: var(--color-text-muted, #888);
    margin-right: 6px;
    font-weight: 500;
}

.thinking-content blockquote {
    border-left: 2px solid color-mix(in srgb, var(--color-accent) 50%, transparent);
    padding: 3px 8px;
    margin: 4px 0 6px 0;
    font-size: 11px;
    background: transparent;
    color: var(--color-text-secondary);
}

.thinking-content em {
    font-style: italic;
    opacity: 0.65;
    font-size: 11px;
}

.thinking-content hr {
    border: none;
    border-top: 1px solid color-mix(in srgb, var(--color-border) 30%, transparent);
    margin: 6px 0;
}

/* ============================================
   Message Actions
   ============================================ */
.message-actions {
    display: flex;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.message:hover .message-actions {
    opacity: 1;
}

.action-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-fast);
    position: relative;
}

.action-btn:hover {
    background: var(--color-surface-hover);
    color: var(--color-text);
}

/* Lucide icons in action buttons */
.action-btn .lucide-icon {
    width: 14px;
    height: 14px;
    stroke: currentColor;
    stroke-width: 1.75;
    fill: none;
}

.action-btn:hover .lucide-icon {
    stroke: var(--color-text);
}

/* Hover tooltip for action buttons */
.action-btn[data-tooltip]::before {
    content: attr(data-tooltip);
    position: absolute;
    bottom: calc(100% + 6px);
    left: 50%;
    transform: translateX(-50%) scale(0.9);
    padding: 4px 8px;
    background: #1a1a1a;
    color: #fff;
    font-size: 10px;
    font-weight: 500;
    border-radius: 4px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: all 0.15s ease;
    pointer-events: none;
    z-index: 100;
}

.action-btn[data-tooltip]::after {
    content: '';
    position: absolute;
    bottom: calc(100% + 2px);
    left: 50%;
    transform: translateX(-50%);
    border: 4px solid transparent;
    border-top-color: #1a1a1a;
    opacity: 0;
    visibility: hidden;
    transition: all 0.15s ease;
    pointer-events: none;
    z-index: 100;
}

.action-btn[data-tooltip]:hover::before,
.action-btn[data-tooltip]:hover::after {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) scale(1);
}

/* ============================================
   Message Collapse
   ============================================ */
.message.collapsed .bubble {
    max-height: 80px;
    overflow: hidden;
    position: relative;
}

.message.collapsed .bubble::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 40px;
    background: linear-gradient(transparent, var(--color-accent-light));
    pointer-events: none;
}

/* Assistant message has different background */
.message.assistant.collapsed .bubble::after {
    background: linear-gradient(transparent, var(--color-bg));
}

/* Hide message actions when collapsed except collapse button */
.message.collapsed .message-actions .action-btn:not(.collapse-btn) {
    display: none;
}

/* BUG-4 Fix: Hide any content after bubble when collapsed (further topics, suggestions, etc.) */
.message.collapsed>*:not(.bubble):not(.message-actions):not(.model-badge):not(.thinking-block) {
    display: none;
}

/* ============================================
   Attachment Chips
   ============================================ */
.attachment-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: var(--spacing-sm);
}

.attachment-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 12px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    max-width: 200px;
}

.attachment-chip .chip-icon {
    font-size: 16px;
    flex-shrink: 0;
}

.attachment-chip .chip-name {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--color-text);
    flex: 1;
}

.attachment-chip .chip-type {
    padding: 2px 6px;
    background: var(--color-bg-secondary);
    border-radius: var(--radius-sm);
    font-size: 10px;
    font-weight: 600;
    color: var(--color-text-muted);
    flex-shrink: 0;
}

/* ============================================
   Generated Image Overlay
   ============================================ */
.generated-image-container {
    position: relative;
    display: inline-block;
    max-width: 100%;
    margin-top: 10px;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.generated-image {
    display: block;
    max-width: 100%;
    border-radius: var(--radius-md);
    transition: filter 0.2s;
}

.image-overlay {
    position: absolute;
    top: 8px;
    right: 8px;
    display: flex;
    gap: 6px;
    opacity: 0;
    transition: opacity 0.2s;
    background: rgba(0, 0, 0, 0.6);
    padding: 4px;
    border-radius: 8px;
    backdrop-filter: blur(4px);
}

.generated-image-container:hover .image-overlay {
    opacity: 1;
}

.image-btn {
    width: 28px;
    height: 28px;
    border: none;
    background: transparent;
    color: white;
    font-size: 16px;
    cursor: pointer;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

/* ============================================
   Canvas Editor Modal
   ============================================ */
.canvas-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: #1a1a1a;
    z-index: 2000;
    display: none;
    flex-direction: column;
}

.canvas-modal.active {
    display: flex;
}

.canvas-toolbar {
    height: 60px;
    background: #2d2d2d;
    border-bottom: 1px solid #444;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
}

.canvas-tools-left,
.canvas-tools-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.canvas-title {
    color: #fff;
    font-weight: 500;
}

.canvas-btn {
    padding: 8px 16px;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    font-weight: 500;
    transition: background 0.2s;
}

.canvas-btn.primary {
    background: #4285f4;
    color: white;
}

.canvas-btn.primary:hover {
    background: #3367d6;
}

.canvas-btn.secondary {
    background: transparent;
    color: #aaa;
    border: 1px solid #555;
}

.canvas-btn.secondary:hover {
    color: white;
    border-color: #888;
}

.canvas-btn.icon {
    background: transparent;
    font-size: 18px;
    padding: 6px;
}

.canvas-btn.icon:hover {
    background: rgba(255, 255, 255, 0.1);
}

.tool-separator {
    width: 1px;
    height: 24px;
    background: #555;
    margin: 0 4px;
}

.color-picker-wrapper,
.brush-size-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #ccc;
    font-size: 14px;
}

.canvas-workspace {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: auto;
    padding: 20px;
    background: #111;
}

.canvas-container {
    position: relative;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.5);
}

#canvasBackgroundImg {
    display: block;
    max-width: 90vw;
    max-height: 85vh;
    pointer-events: none;
}

#drawingCanvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    cursor: crosshair;
    touch-action: none;
}

/* ============================================
   Assistant Content Formatting (Annual Report Style)
   ============================================ */

/* Remove unwanted backgrounds/colors from AI-generated content */
.message.assistant .bubble *:not(pre):not(code):not(.icon):not(svg):not(h1):not(h2):not(h3):not(h4):not(blockquote):not(ul):not(ol):not(li):not(table):not(thead):not(tbody):not(tr):not(th):not(td) {
    background: transparent !important;
    background-color: transparent !important;
    color: var(--color-text) !important;
    text-decoration: none !important;
    border: none !important;
    outline: none !important;
    box-shadow: none !important;
}

/* Headers */
.message.assistant .bubble h1,
.message.assistant .bubble h2,
.message.assistant .bubble h3,
.message.assistant .bubble h4 {
    background: transparent !important;
    border: none !important;
    color: var(--color-text) !important;
    padding: 0 !important;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    font-family: 'Montserrat', 'Inter', system-ui, sans-serif;
    font-weight: 600;
    line-height: 1.4;
}

/* Ensure no icons or emojis before headings */
.message.assistant .bubble h1::before,
.message.assistant .bubble h2::before,
.message.assistant .bubble h3::before,
.message.assistant .bubble h4::before {
    content: none !important;
    display: none !important;
}

.message.assistant .bubble h1 {
    font-size: 1.75rem;
    border-bottom: 1px solid var(--color-border-light) !important;
    padding-bottom: 0.5rem !important;
}

.message.assistant .bubble h2 {
    font-size: 1.4rem;
}

.message.assistant .bubble h3 {
    font-size: 1.2rem;
}

.message.assistant .bubble h4 {
    font-size: 1.1rem;
}

/* Paragraphs */
.message.assistant .bubble p {
    margin-bottom: 1.25rem;
    color: var(--color-text-secondary);
}

/* Lists - Gemini App Style Clean Formatting */
.message.assistant .bubble ul,
.message.assistant .bubble ol {
    margin: 0.75rem 0;
    padding-left: 1.5rem;
    color: var(--color-text-secondary);
}

.message.assistant .bubble li {
    margin-bottom: 0.5rem;
    line-height: 1.7;
    padding-left: 0.25rem;
}

/* Ordered Lists - Simple decimal numbers like Gemini */
.message.assistant .bubble ol {
    list-style-type: decimal;
}

.message.assistant .bubble ol ol {
    list-style-type: upper-alpha;
    margin-top: 0.5rem;
    padding-left: 1.25rem;
}

.message.assistant .bubble ol ol ol {
    list-style-type: decimal;
    margin-top: 0.5rem;
}

/* Unordered Lists - Simple bullet (no colored icons) */
.message.assistant .bubble ul {
    list-style-type: none;
    padding-left: 1rem;
}

.message.assistant .bubble ul>li::before {
    content: "•";
    color: var(--color-text-muted, #888);
    display: inline-block;
    width: 1rem;
    margin-left: -1rem;
}

.message.assistant .bubble ul ul {
    margin-top: 0.5rem;
}

.message.assistant .bubble ul ul>li::before {
    content: "◦";
}

.message.assistant .bubble ul ul ul>li::before {
    content: "▪";
}

/* Nested list spacing */
.message.assistant .bubble li>ul,
.message.assistant .bubble li>ol {
    margin-top: 0.5rem;
    margin-bottom: 0;
}

/* Mixed lists */
.message.assistant .bubble ul ol {
    list-style-type: decimal;
}

.message.assistant .bubble ol ul {
    list-style-type: none;
    padding-left: 1.25rem;
    margin-top: 0.5rem;
}

/* Blockquotes */
.message.assistant .bubble blockquote {
    border-left: 3px solid var(--color-accent);
    background: linear-gradient(to right, var(--color-bg-secondary), transparent);
    margin: 1.5rem 0;
    padding: 1rem 1.5rem;
    font-style: italic;
    color: var(--color-text);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* Links - Enhanced for Source Citations */
.message.assistant .bubble a,
.message.assistant .bubble a:link,
.message.assistant .bubble a:visited {
    color: var(--color-accent) !important;
    text-decoration: none !important;
    background: transparent !important;
    border: none !important;
    cursor: pointer;
    transition: color 0.2s ease, font-style 0.2s ease;
    font-weight: 500;
    position: relative;
    word-break: break-all;
    overflow-wrap: anywhere;
}

.message.assistant .bubble a:hover,
.message.assistant .bubble a:link:hover,
.message.assistant .bubble a:visited:hover,
.message.assistant .bubble a:focus {
    color: #5cb8ff !important;
    text-decoration: underline !important;
    font-style: italic !important;
}

.message.assistant .bubble a:active {
    opacity: 0.7;
}

/* External link indicator for citations */
.message.assistant .bubble a[href^="http"]::after {
    content: " ↗";
    font-size: 0.75em;
    opacity: 0.6;
    vertical-align: super;
}

/* Remove styling from special elements */
.message.assistant .bubble u,
.message.assistant .bubble mark,
.message.assistant .bubble ins {
    text-decoration: none !important;
    background: transparent !important;
    color: var(--color-text) !important;
    border: none !important;
}

/* Override inline styled elements */
.message.assistant .bubble [style*="background"],
.message.assistant .bubble [style*="color"],
.message.assistant .bubble [style*="border"] {
    background: transparent !important;
    background-color: transparent !important;
    color: inherit !important;
    border: none !important;
}

/* Code blocks within bubbles */
.message.assistant .bubble code {
    background: transparent !important; /* Fallback for older browsers */
    background: color-mix(in srgb, var(--color-accent) 8%, transparent) !important;
    color: var(--color-text) !important;
    padding: 2px 6px !important;
    border-radius: 4px !important;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace !important;
    font-size: 0.9em !important;
    border: 1px solid color-mix(in srgb, var(--color-accent) 20%, transparent) !important;
}

.message.assistant .bubble pre {
    background: color-mix(in srgb, var(--color-accent) 8%, transparent) !important;
    color: var(--color-text) !important;
    padding: 12px !important;
    border-radius: 6px !important;
    overflow-x: auto !important;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace !important;
    font-size: 0.9em !important;
    line-height: 1.5 !important;
    margin: 1rem 0 !important;
    border: 1px solid color-mix(in srgb, var(--color-accent) 20%, transparent) !important;
    position: relative;
}

.message.assistant .bubble pre code {
    background: transparent !important;
    color: inherit !important;
    padding: 0 !important;
    border: none !important;
    display: block !important;
    overflow-x: auto !important;
}

/* General code styling for non-bubble contexts */
code {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace !important;
    font-size: 0.9em !important;
    background: color-mix(in srgb, var(--color-accent) 8%, transparent) !important;
    color: var(--color-text) !important;
    padding: 2px 6px !important;
    border-radius: 4px !important;
    border: 1px solid color-mix(in srgb, var(--color-accent) 20%, transparent) !important;
}

/* ============================================
   Edit Message Box
   ============================================ */
.edit-textarea {
    width: 100% !important;
    max-width: 800px;
    /* BUG-1 Fix: Constrain edit box width */
    min-height: 120px;
    padding: var(--spacing-sm);
    border: 1px solid #d1d5db !important;
    border-radius: var(--radius-md);
    background: var(--color-bg);
    color: var(--color-text);
    font-family: inherit;
    font-size: 14px;
    resize: vertical;
    margin: 0 auto var(--spacing-sm);
    /* BUG-1 Fix: Center within container */
    box-sizing: border-box;
    display: block;
}

.message.user .bubble:has(.edit-textarea) {
    max-width: 100% !important;
    width: 100% !important;
    background: transparent !important;
    padding: 0;
}

.edit-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

.edit-actions button {
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.2s;
}

.edit-actions .btn-cancel {
    background: transparent;
    border-color: var(--color-border);
    color: var(--color-text-secondary);
}

.edit-actions .btn-cancel:hover {
    background: var(--color-surface-hover);
    color: var(--color-text);
}

.edit-actions .btn-primary {
    background: transparent; /* Fallback for older browsers */
    background: color-mix(in srgb, var(--color-accent) 30%, transparent);
    border: 1px solid var(--color-accent);
    color: var(--color-text);
}

.edit-actions .btn-primary:hover {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: var(--color-text);
}

/* Editing Mode - Full Width within message constraints */
.message.editing-mode {
    width: 100% !important;
    max-width: 800px !important;
    /* BUG FIX: keep within message width, was 100% causing overflow */
    align-items: stretch !important;
    padding-right: 0 !important;
    justify-content: stretch !important;
}

.message.editing-mode .bubble,
.message.user .bubble.is-editing {
    width: 100% !important;
    max-width: 100% !important;
    min-width: 100% !important;
    background: transparent !important;
    box-shadow: none !important;
    padding: 0 !important;
    display: block !important;
}

.message.editing-mode .user-message-container {
    width: 100% !important;
    max-width: 100% !important;
}

/* ============================================
   Back Button
   ============================================ */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: var(--radius-md);
    color: var(--color-text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 14px;
    transition: background 0.2s, color 0.2s;
    background: transparent;
}

.back-link:hover {
    background: var(--color-surface-hover);
    color: var(--color-text);
}

.back-link svg {
    width: 16px;
    height: 16px;
    stroke-width: 2.5;
}

/* ============================================
   Animations
   ============================================ */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}


/* NOTE: Table styles are managed by tables.css */

/* ============================================
   Pipeline Step Deliverables (Agent multi-step)
   ============================================ */
.pipeline-deliverables {
    margin: var(--spacing-sm) 0;
    font-family: var(--font-primary, 'Inter', system-ui, sans-serif);
}

.pipeline-deliverables .pipeline-header {
    font-size: var(--font-size-md, 15px);
    margin-bottom: var(--spacing-sm, 8px);
    color: var(--color-text-primary);
    padding-bottom: var(--spacing-xs, 4px);
    border-bottom: 1px solid var(--color-border, rgba(0, 0, 0, 0.1)) !important;
}

.pipeline-step-deliverable {
    margin-bottom: var(--spacing-sm, 8px);
    border: 1px solid var(--color-border, rgba(0, 0, 0, 0.1)) !important;
    border-radius: var(--radius-md, 8px);
    overflow: hidden;
    background: var(--color-bg-secondary, #f8f9fa) !important;
}

.step-header {
    display: flex !important;
    align-items: center;
    gap: 8px;
    padding: var(--spacing-sm, 8px) var(--spacing-md, 12px);
    cursor: pointer;
    user-select: none;
    background: var(--color-surface, #fff) !important;
    transition: background 0.15s ease;
}

.step-badge {
    flex: 1;
    font-size: var(--font-size-sm, 13px);
    font-weight: 600;
    color: var(--color-text-primary) !important;
}

.step-header:hover {
    background: var(--color-surface-hover, #f0f0f0) !important;
}


.step-toggle {
    color: var(--color-text-muted, #888) !important;
    transition: transform 0.2s ease;
    display: inline-flex;
    align-items: center;
}

.step-toggle.expanded {
    transform: rotate(180deg);
}

.step-thinking-empty {
    opacity: 0.6;
}

.step-content {
    padding: var(--spacing-md, 12px);
    border-top: 1px solid var(--color-border, rgba(0, 0, 0, 0.1)) !important;
    font-size: var(--font-size-sm, 13px);
    line-height: 1.6;
    color: var(--color-text-secondary) !important;
}

.step-content.collapsed {
    display: none;
}

/* Step output (deliverable) box */
.step-output {
    color: var(--color-text) !important;
    padding: 0;
    margin-top: 12px;
    background: rgba(52, 168, 83, 0.08) !important;
    border-radius: 6px;
    border: 1px solid rgba(52, 168, 83, 0.3);
    border-left: 4px solid #34a853 !important;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(52, 168, 83, 0.1);
}

.step-output strong {
    color: #34a853 !important;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: block;
    margin-bottom: 6px;
    padding: 2px 0;
}

/* Thinking box refinement — add collapse support */
.step-thinking {
    margin-bottom: 16px;
    padding: 0;
    background: rgba(66, 133, 244, 0.08) !important;
    border-radius: 6px;
    border: 1px solid rgba(66, 133, 244, 0.25);
    border-left: 4px solid #4285f4 !important;
    overflow: hidden;
    box-shadow: 0 1px 3px rgba(66, 133, 244, 0.1);
}

.step-thinking strong {
    color: #4285f4 !important;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: block;
    margin-bottom: 6px;
    padding: 2px 0;
}

/* Empty thinking state */
.step-thinking.step-thinking-empty {
    background: rgba(128, 128, 128, 0.05) !important;
    border-left: 4px solid #888 !important;
    opacity: 0.7;
}

/* Box header (clickable toggle for thinking/deliverable) */
.step-box-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    cursor: pointer;
    user-select: none;
}

.step-box-header:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* Box toggle chevron */
.box-toggle {
    transition: transform 0.2s;
    display: flex;
    align-items: center;
    color: var(--color-text-muted);
}

.box-toggle.expanded {
    transform: rotate(0deg);
}

.box-toggle:not(.expanded) {
    transform: rotate(-90deg);
}

/* Box content (collapsible) */
.step-box-content {
    padding: 8px 16px 16px 16px;
}

.step-box-content.collapsed {
    display: none;
}

/* Thinking pre inside box content */
.step-box-content pre {
    white-space: pre-wrap;
    word-break: break-word;
    max-height: 300px;
    overflow-y: auto;
    margin: 0 !important;
    padding: 4px !important;
    background: transparent !important;
    border: none !important;
    font-size: 12px !important;
    line-height: 1.5;
}

/* Deliverable text inside box content */
.step-box-content .deliverable-text {
    max-height: 500px;
    overflow-y: auto;
    color: var(--color-text-secondary) !important;
    line-height: 1.7;
}

.deliverable-text {
    color: var(--color-text-secondary) !important;
    line-height: 1.7;
}

.step-time {
    font-size: 11px;
    color: var(--color-text-muted);
    margin-left: auto;
    font-variant-numeric: tabular-nums;
}

.step-time-live {
    color: var(--color-accent, #4285f4);
}

.message-timestamp {
    font-size: 11px;
    color: var(--color-text-muted);
    margin-left: auto;
    white-space: nowrap;
}

.deliverable-text h1, .deliverable-text h2, .deliverable-text h3,
.deliverable-text h4, .deliverable-text h5 {
    color: var(--color-text) !important;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}

.deliverable-text table {
    width: 100%;
    border-collapse: collapse;
    margin: 0.75rem 0;
    font-size: 12px;
}

.deliverable-text th, .deliverable-text td {
    padding: 6px 10px;
    border: 1px solid var(--color-border, rgba(0, 0, 0, 0.1)) !important;
    text-align: left;
}

.deliverable-text th {
    background: var(--color-surface, #f8f9fa) !important;
    font-weight: 600;
}

/* Artifact Styles */
.artifact {
    margin: 16px 0;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface-secondary);
    overflow: hidden;
}

.artifact-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: var(--color-surface-tertiary);
    border-bottom: 1px solid var(--color-border);
}

.artifact-type {
    font-weight: 600;
    color: var(--color-text);
}

.artifact-filename {
    font-size: 0.9em;
    color: var(--color-text-muted);
    margin-left: 8px;
}

.artifact-action-btn {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 4px 8px;
    font-size: 0.85em;
    color: var(--color-text);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.artifact-action-btn:hover {
    background: var(--color-surface-hover);
    border-color: var(--color-primary);
}

.artifact-content {
    padding: 12px;
    min-height: 100px;
}

.chart-container,
.diagram-container {
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.document-container pre {
    white-space: pre-wrap;
    word-wrap: break-word;
    max-height: 400px;
    overflow-y: auto;
}

.image-container,
.canvas-container {
    text-align: center;
}

.artifact-truncated {
    margin-top: 8px;
    font-style: italic;
    color: var(--color-text-muted);
}

.loading-spinner {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100px;
    color: var(--color-text-muted);
}

.artifact-placeholder {
    display: block;
    margin: 16px 0;
    padding: 16px;
    background: var(--color-surface-secondary);
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-md);
    text-align: center;
    color: var(--color-text-muted);
}

/* Plus Submenu for File Operations */
.plus-submenu {
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    z-index: 1000;
    min-width: 200px;
}

.plus-submenu .plus-menu-item {
    padding: 8px 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
}

.plus-submenu .plus-menu-item:hover {
    background: var(--color-surface-hover);
}

.plus-submenu .plus-menu-divider {
    height: 1px;
    background: var(--color-border);
    margin: 4px 0;
}

/* === Retrieval Summary Block === */
.search-summary-block {
    margin: 8px 0;
    border: 1px solid var(--color-border, rgba(0, 0, 0, 0.1));
    border-radius: 8px;
    background: var(--color-surface-soft, rgba(0, 0, 0, 0.02));
    overflow: hidden;
    transition: border-color 0.15s ease;
}
.search-summary-block:hover {
    border-color: var(--color-border-strong, rgba(0, 0, 0, 0.18));
}
.search-summary-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 12px;
    cursor: pointer;
    user-select: none;
    font-size: 13px;
    color: var(--color-text-muted, rgba(0, 0, 0, 0.6));
    font-weight: 500;
    transition: background-color 0.15s ease;
}
.search-summary-header:hover {
    background: var(--color-surface-hover, rgba(0, 0, 0, 0.03));
}
.search-summary-header:focus-visible {
    outline: 2px solid var(--color-accent, #4a7cf3);
    outline-offset: -2px;
}
.search-summary-header > span:first-child {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}
.search-summary-header .thinking-toggle {
    display: inline-flex;
    align-items: center;
    transition: transform 0.2s ease;
}
.search-summary-block:not(.collapsed) .search-summary-header .thinking-toggle,
.search-summary-header .thinking-toggle.expanded {
    transform: rotate(180deg);
}
.search-summary-content {
    padding: 8px 12px 12px 12px;
    border-top: 1px solid var(--color-border, rgba(0, 0, 0, 0.08));
    font-size: 13px;
    line-height: 1.55;
    color: var(--color-text, rgba(0, 0, 0, 0.85));
    max-height: 360px;
    overflow-y: auto;
}
.search-summary-content.collapsed {
    display: none;
}
.search-summary-content > *:first-child {
    margin-top: 0;
}
.search-summary-content > *:last-child {
    margin-bottom: 0;
}
.search-summary-content ul,
.search-summary-content ol {
    padding-left: 22px;
    margin: 6px 0;
}
.search-summary-content li {
    margin: 3px 0;
}
.search-summary-content code {
    background: var(--color-surface-strong, rgba(0, 0, 0, 0.06));
    padding: 1px 5px;
    border-radius: 3px;
    font-size: 12px;
}