/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Default colors for Local Version (Zeta Researcher) - Gray theme with blue accents */
:root {
    --bg-primary: #1a1a1a;
    --bg-secondary: #252525;
    --bg-tertiary: #353535;
    --accent: #5b9cf5;
    --accent-hover: #78b0ff;
    --text-primary: #eee;
    --text-secondary: #aaa;
    --text-muted: #666;
    --border-color: #333;
    --success: #4ade80;
    --code-bg: #2d2d2d;
}

/* Light Version (Zeta Researcher Light) - Blue theme for HuggingFace */
body.version-light {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-tertiary: #0f3460;
    --accent: #5b9cf5;
    --accent-hover: #78b0ff;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    height: 100vh;
    overflow: hidden;
}

/* App Layout */
.app-container {
    display: flex;
    height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    padding: 20px;
}

/* Mode Toggle */
.mode-toggle-container {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    padding: 4px;
    background: var(--bg-primary);
    border-radius: 8px;
}

.mode-toggle-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 12px;
    background: transparent;
    border: none;
    border-radius: 6px;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.mode-toggle-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.mode-toggle-btn.active {
    background: var(--accent);
    color: white;
}

.mode-toggle-btn svg {
    flex-shrink: 0;
}

.sidebar-header {
    margin-bottom: 30px;
}

.sidebar-header h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--accent);
}

.sidebar-header .subtitle {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 4px;
}

.sidebar-stats {
    background-color: var(--bg-tertiary);
    border-radius: 8px;
    padding: 15px;
    margin-bottom: 20px;
}

.stat-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
}

.stat-item:not(:last-child) {
    border-bottom: 1px solid var(--border-color);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.stat-value {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-primary);
}

.sidebar-section {
    margin-bottom: 20px;
}

.sidebar-section h3 {
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    margin-bottom: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.sidebar-section h3 .view-all-btn {
    margin-left: auto;
}

/* Documents section */
.documents-section {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    min-height: 0;
    max-height: 400px; /* Default max height, adjustable via resize handle */
}

.toggle-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.7rem;
    padding: 2px 6px;
}

.toggle-btn:hover {
    color: var(--text-primary);
}

.documents-list {
    overflow-y: auto;
    flex: 1; /* Take remaining space in documents-section */
    background-color: var(--bg-tertiary);
    border-radius: 6px;
    padding: 8px;
    min-height: 50px;  /* Ensure minimum visibility */
}

.doc-actions {
    display: flex;
    align-items: center;
    gap: 4px;
}

.view-all-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.65rem;
    padding: 2px 6px;
    border-radius: 3px;
    text-transform: uppercase;
}

.view-all-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* Filter controls */
.filter-controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 10px;
    margin-bottom: 8px;
    background-color: var(--bg-tertiary);
    border-radius: 6px;
    font-size: 0.75rem;
    flex-shrink: 0; /* Prevent shrinking */
}

.filter-status {
    display: flex;
    align-items: center;
    gap: 6px;
}

.filter-label {
    color: var(--text-muted);
}

.filter-value {
    color: var(--accent);
    font-weight: 500;
}

.filter-clear-btn {
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.65rem;
    cursor: pointer;
    transition: all 0.15s;
}

.filter-clear-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.doc-item {
    display: flex;
    align-items: center;
    padding: 6px 8px;
    border-radius: 4px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    transition: background-color 0.15s;
    gap: 8px;
}

.doc-item:hover {
    background-color: var(--bg-secondary);
}

.doc-item.selected {
    background-color: rgba(229, 62, 62, 0.1);
    border-left: 2px solid var(--accent);
}

.doc-checkbox {
    width: 14px;
    height: 14px;
    cursor: pointer;
    accent-color: var(--accent);
    flex-shrink: 0;
}

.doc-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    cursor: pointer;
}

.doc-name:hover {
    color: var(--accent);
}

.doc-chunks {
    background-color: var(--bg-secondary);
    padding: 2px 6px;
    border-radius: 3px;
    font-size: 0.7rem;
    color: var(--text-muted);
    flex-shrink: 0;
}

/* Resize handle */
.resize-handle {
    height: 12px;
    cursor: ns-resize;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 8px 0;
    user-select: none;
    transition: opacity 0.2s;
}

.resize-handle:hover {
    opacity: 1;
}

.resize-handle-line {
    width: 40px;
    height: 3px;
    background-color: var(--border-color);
    border-radius: 2px;
    transition: background-color 0.2s;
}

.resize-handle:hover .resize-handle-line {
    background-color: var(--accent);
}

.resize-handle.dragging {
    opacity: 1;
}

.resize-handle.dragging .resize-handle-line {
    background-color: var(--accent);
}

.loading-docs, .no-docs, .error-docs {
    text-align: center;
    padding: 15px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.error-docs {
    color: var(--accent);
}

.setting-item {
    margin-bottom: 15px;
}

.setting-item label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    cursor: pointer;
}

.setting-item input[type="range"] {
    width: 100%;
    margin-top: 8px;
    accent-color: var(--accent);
}

.setting-item input[type="checkbox"] {
    accent-color: var(--accent);
    width: 16px;
    height: 16px;
}

#top-k-value {
    display: inline-block;
    margin-left: 10px;
    background: var(--bg-tertiary);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.85rem;
}

/* Model selector */
.model-select {
    width: 100%;
    margin-top: 8px;
    padding: 8px 12px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.9rem;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23aaa' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
}

.model-select:hover {
    border-color: var(--accent);
}

.model-select:focus {
    outline: none;
    border-color: var(--accent);
}

.model-select option {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
}

.model-select option:disabled {
    color: var(--text-muted);
}

/* Embedding info display */
.embedding-info {
    display: flex;
    gap: 10px;
    margin-top: 6px;
    font-size: 0.75rem;
}

.embedding-dims {
    background-color: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--accent);
    font-weight: 500;
}

.embedding-chunks {
    color: var(--text-muted);
}

/* Search sources checkboxes */
.search-sources-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 8px;
}

.search-source-checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    background-color: var(--bg-tertiary);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.search-source-checkbox:hover {
    background-color: var(--bg-primary);
}

.search-source-checkbox input[type="checkbox"] {
    accent-color: var(--accent);
    width: 14px;
    height: 14px;
    cursor: pointer;
}

.search-source-checkbox .source-label {
    font-size: 0.85rem;
    color: var(--text-primary);
}

.search-source-checkbox:has(input:checked) {
    border-left: 2px solid var(--accent);
}

.sidebar-footer {
    margin-top: auto;
    display: flex;
    gap: 8px;
}

.btn-publish,
.btn-share,
.btn-save,
.btn-clear {
    flex: 1;
    padding: 10px;
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
}

.btn-publish:hover {
    background-color: var(--bg-tertiary);
    color: var(--success);
    border-color: var(--success);
}

.btn-publish.published {
    color: var(--success);
    border-color: var(--success);
}

.btn-share:hover {
    background-color: var(--bg-tertiary);
    color: #1da1f2;
    border-color: #1da1f2;
}

.btn-share.copied {
    color: var(--success);
    border-color: var(--success);
}

.btn-save:hover {
    background-color: var(--bg-tertiary);
    color: var(--success);
    border-color: var(--success);
}

.btn-clear:hover {
    background-color: var(--bg-tertiary);
    color: var(--accent);
    border-color: var(--accent);
}

/* Chat Container */
.chat-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    height: 100vh;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 20px;
    scroll-behavior: smooth;
}

/* Welcome Message */
.welcome-message {
    text-align: center;
    padding: 60px 20px;
    max-width: 600px;
    margin: 0 auto;
}

.welcome-message h2 {
    font-size: 1.8rem;
    margin-bottom: 15px;
    color: var(--text-primary);
}

.welcome-message p {
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.example-queries {
    margin-top: 20px;
}

.example-queries p {
    font-size: 0.9rem;
    margin-bottom: 15px;
}

.example-btn {
    display: inline-block;
    margin: 5px;
    padding: 10px 16px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.2s;
}

.example-btn:hover {
    background-color: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* Messages */
.message {
    margin-bottom: 20px;
    max-width: 800px;
}

.message.user {
    margin-left: auto;
}

.message-content {
    padding: 15px 20px;
    border-radius: 12px;
    line-height: 1.7;
}

.message.user .message-content {
    background-color: var(--accent);
    color: white;
    border-bottom-right-radius: 4px;
}

.message.assistant .message-content {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-bottom-left-radius: 4px;
}

.message-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    margin-top: 8px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

.model-badge {
    background-color: var(--bg-tertiary);
    padding: 2px 8px;
    border-radius: 4px;
    color: var(--accent);
    font-weight: 500;
}

/* Share button */
.share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s;
    margin-left: auto;
}

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

.share-btn svg {
    transition: transform 0.2s;
}

.share-btn:hover svg {
    transform: scale(1.1);
}

/* Sources */
.sources {
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

.sources-header {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.source-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin: 4px;
    padding: 6px 12px;
    background-color: var(--bg-tertiary);
    border-radius: 4px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.15s;
    border: 1px solid transparent;
}

.source-link {
    cursor: pointer;
}

.source-link:hover {
    background-color: var(--bg-secondary);
    border-color: var(--accent);
    color: var(--accent);
}

.source-item .page-num {
    color: var(--accent);
    font-weight: 500;
}

.source-item .score {
    color: var(--success);
    font-size: 0.75rem;
}

/* Source type icons */
.source-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border-radius: 3px;
    font-size: 0.65rem;
    font-weight: 700;
    color: white;
}

.source-icon.local {
    background-color: #6366f1;
}

.source-icon.web {
    background-color: #22c55e;
}

.source-icon.arxiv {
    background-color: #b91c1c;
}

.source-icon.s2 {
    background-color: #0891b2;
}

.source-icon.pubmed {
    background-color: #7c3aed;
}

.source-item.external .external-icon {
    font-size: 0.7rem;
    opacity: 0.7;
}

/* Search mode info */
.search-mode-info {
    margin-top: 4px;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Inline citation links */
.citation-link {
    color: var(--accent);
    text-decoration: none;
    font-weight: 600;
    padding: 0 2px;
    border-radius: 3px;
    transition: all 0.15s;
}

.citation-link:hover {
    background-color: var(--accent);
    color: white;
    text-decoration: none;
}

/* Loading */
.loading {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 15px 20px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    max-width: 200px;
}

.loading-dots {
    display: flex;
    gap: 4px;
}

.loading-dots span {
    width: 8px;
    height: 8px;
    background-color: var(--accent);
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out;
}

.loading-dots span:nth-child(1) { animation-delay: -0.32s; }
.loading-dots span:nth-child(2) { animation-delay: -0.16s; }

@keyframes bounce {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1); }
}

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

.spin {
    animation: spin 1s linear infinite;
}

/* Input Area */
.chat-input-container {
    padding: 20px;
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
}

#chat-form {
    max-width: 800px;
    margin: 0 auto;
}

.input-wrapper {
    display: flex;
    align-items: flex-end;
    gap: 10px;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 10px 15px;
    transition: border-color 0.2s;
}

.input-wrapper:focus-within {
    border-color: var(--accent);
}

#user-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 1rem;
    resize: none;
    max-height: 150px;
    outline: none;
    font-family: inherit;
}

#user-input::placeholder {
    color: var(--text-muted);
}

.send-button {
    width: 40px;
    height: 40px;
    background-color: var(--accent);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s;
}

.send-button:hover {
    background-color: var(--accent-hover);
}

.send-button:disabled {
    background-color: var(--text-muted);
    cursor: not-allowed;
}

.send-button svg {
    width: 20px;
    height: 20px;
    color: white;
}

/* Markdown styling in messages */
.message-content p {
    margin-bottom: 10px;
}

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

.message-content code {
    background-color: var(--code-bg);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'SF Mono', Monaco, monospace;
    font-size: 0.9em;
}

.message-content pre {
    background-color: var(--code-bg);
    padding: 15px;
    border-radius: 8px;
    overflow-x: auto;
    margin: 10px 0;
}

.message-content pre code {
    background: none;
    padding: 0;
}

.message-content ul, .message-content ol {
    margin: 10px 0;
    padding-left: 20px;
}

.message-content li {
    margin-bottom: 5px;
}

.message-content strong {
    font-weight: 600;
}

.message-content em {
    font-style: italic;
}

/* Markdown headings in messages */
.message-content h1,
.message-content h2,
.message-content h3,
.message-content h4 {
    color: var(--text-primary);
    font-weight: 600;
    margin-top: 20px;
    margin-bottom: 12px;
    line-height: 1.3;
}

.message-content h1:first-child,
.message-content h2:first-child,
.message-content h3:first-child,
.message-content h4:first-child {
    margin-top: 0;
}

.message-content h1 {
    font-size: 1.4rem;
    border-bottom: 2px solid var(--accent);
    padding-bottom: 8px;
}

.message-content h2 {
    font-size: 1.2rem;
    color: var(--accent);
    border-left: 3px solid var(--accent);
    padding-left: 12px;
    margin-left: -12px;
}

.message-content h3 {
    font-size: 1.05rem;
    color: var(--text-primary);
}

.message-content h4 {
    font-size: 0.95rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Blockquotes */
.message-content blockquote {
    border-left: 3px solid var(--border-color);
    margin: 15px 0;
    padding: 10px 15px;
    background-color: var(--bg-tertiary);
    border-radius: 0 6px 6px 0;
    color: var(--text-secondary);
    font-style: italic;
}

.message-content blockquote p {
    margin-bottom: 0;
}

/* Horizontal rule */
.message-content hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 20px 0;
}

/* Error message */
.error-message {
    background-color: rgba(233, 69, 96, 0.1);
    border: 1px solid var(--accent);
    color: var(--accent);
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        display: none;
    }

    .chat-input-container {
        padding: 15px;
    }
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* Modal Overlay */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
}

.modal-overlay.visible {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    width: 90%;
    max-width: 700px;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    transform: translateY(20px);
    transition: transform 0.2s;
}

.modal-overlay.visible .modal-content {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 1.3rem;
    color: var(--text-primary);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.8rem;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

.modal-close:hover {
    color: var(--accent);
}

.modal-body {
    padding: 20px 25px;
    overflow-y: auto;
    flex: 1;
}

.modal-stats {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

.modal-stats span {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.modal-documents-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.modal-doc-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 12px 15px;
    background-color: var(--bg-tertiary);
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.15s, transform 0.15s;
}

.modal-doc-item:hover {
    background-color: var(--bg-primary);
    transform: translateX(5px);
}

.modal-doc-icon {
    font-size: 1.5rem;
}

.modal-doc-info {
    flex: 1;
    overflow: hidden;
}

.modal-doc-name {
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 500;
    margin-bottom: 3px;
}

.modal-doc-filename {
    color: var(--text-muted);
    font-size: 0.75rem;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.modal-doc-chunks {
    color: var(--text-secondary);
    font-size: 0.8rem;
    background-color: var(--bg-secondary);
    padding: 4px 10px;
    border-radius: 4px;
    white-space: nowrap;
}

/* Modal Filter Controls */
.modal-filter-controls {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 15px;
    background-color: var(--bg-tertiary);
    border-radius: 8px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.modal-filter-label {
    color: var(--text-muted);
    font-size: 0.85rem;
}

.modal-selection-count {
    color: var(--accent);
    font-weight: 500;
    font-size: 0.85rem;
}

.modal-filter-buttons {
    display: flex;
    gap: 8px;
    margin-left: auto;
}

.modal-filter-btn {
    padding: 6px 14px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    color: var(--text-secondary);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.15s;
}

.modal-filter-btn:hover {
    background-color: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* Modal Document Checkbox */
.modal-doc-checkbox {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--accent);
    flex-shrink: 0;
}

.modal-doc-item.selected {
    background-color: var(--bg-primary);
    border: 1px solid var(--accent);
}

.modal-doc-item .modal-doc-icon,
.modal-doc-item .modal-doc-info {
    cursor: pointer;
}

.modal-doc-item .modal-doc-info:hover .modal-doc-name {
    color: var(--accent);
}

/* Share Modal */
.share-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1200;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
}

.share-modal-overlay.visible {
    opacity: 1;
    visibility: visible;
}

.share-modal-content {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    width: 90%;
    max-width: 480px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    transform: translateY(20px);
    transition: transform 0.2s;
}

.share-modal-overlay.visible .share-modal-content {
    transform: translateY(0);
}

.share-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.share-modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    display: flex;
    align-items: center;
}

.share-modal-close:hover {
    color: var(--text-primary);
    background-color: var(--bg-tertiary);
}

.share-modal-body {
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.share-url-row {
    display: flex;
    gap: 8px;
}

#share-url-input {
    flex: 1;
    padding: 10px 12px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.85rem;
    font-family: 'SF Mono', Monaco, monospace;
    outline: none;
    min-width: 0;
}

#share-url-input:focus {
    border-color: var(--accent);
}

.share-action-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
}

.share-copy-btn:hover {
    background-color: var(--accent);
    border-color: var(--accent);
    color: white;
}

.share-copy-btn.copied {
    background-color: var(--success);
    border-color: var(--success);
    color: white;
}

.share-social-row {
    display: flex;
    gap: 8px;
}

.share-x-btn {
    flex: 1;
    justify-content: center;
}

.share-x-btn:hover {
    background-color: #000;
    border-color: #555;
    color: white;
}

/* PDF Viewer Modal */
.pdf-modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1100;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
}

.pdf-modal-overlay.visible {
    opacity: 1;
    visibility: visible;
}

.pdf-modal-content {
    background-color: var(--bg-secondary);
    border-radius: 12px;
    width: 70%;
    height: 80vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 25px 80px rgba(0, 0, 0, 0.6);
    transform: scale(0.95);
    transition: transform 0.2s, width 0.3s, height 0.3s;
}

.pdf-modal-overlay.visible .pdf-modal-content {
    transform: scale(1);
}

.pdf-modal-content.expanded {
    width: 95%;
    height: 95vh;
}

.pdf-modal-content:fullscreen {
    width: 100%;
    height: 100%;
    border-radius: 0;
}

.pdf-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 20px;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--bg-tertiary);
    border-radius: 12px 12px 0 0;
}

.pdf-modal-content:fullscreen .pdf-modal-header {
    border-radius: 0;
}

.pdf-modal-title {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-primary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
    margin-right: 15px;
}

.pdf-modal-controls {
    display: flex;
    gap: 8px;
}

.pdf-control-btn {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 6px 8px;
    cursor: pointer;
    color: var(--text-muted);
    transition: all 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pdf-control-btn:hover {
    background-color: var(--bg-secondary);
    border-color: var(--accent);
    color: var(--accent);
}

.pdf-control-btn svg {
    width: 18px;
    height: 18px;
}

.pdf-close-btn:hover {
    background-color: rgba(233, 78, 78, 0.2);
    border-color: #e94e4e;
    color: #e94e4e;
}

.pdf-modal-body {
    flex: 1;
    overflow: hidden;
    border-radius: 0 0 12px 12px;
}

.pdf-modal-content:fullscreen .pdf-modal-body {
    border-radius: 0;
}

#pdf-iframe {
    width: 100%;
    height: 100%;
    border: none;
    background-color: #525659;
}

/* ================================
   PROMPT MODE STYLES
   ================================ */

/* Mode visibility control */
.sidebar-mode {
    width: 100%;
    display: flex;
    flex-direction: column;
    flex: 1;
}

/* Prompt Mode Sidebar */
#prompt-sidebar {
    display: flex;
    flex-direction: column;
    gap: 12px;
    overflow-y: auto;
    padding-bottom: 20px;
}


.prompt-sidebar-title {
    font-size: 1.1rem;
    color: var(--accent);
    margin: 10px 0;
}

/* Prompt form fields */
.prompt-field {
    margin-bottom: 12px;
}

.prompt-field label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.prompt-field input[type="text"],
.prompt-field textarea,
.prompt-field select {
    width: 100%;
    padding: 8px 10px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    font-size: 0.85rem;
    font-family: inherit;
    transition: border-color 0.2s;
}

.prompt-field input:focus,
.prompt-field textarea:focus,
.prompt-field select:focus {
    outline: none;
    border-color: var(--accent);
}

.prompt-field textarea {
    resize: vertical;
    min-height: 50px;
}

.prompt-field input[type="checkbox"] {
    accent-color: var(--accent);
}

/* Prompt type toggle */
.prompt-type-toggle {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
    margin-bottom: 10px;
}

.prompt-type-toggle input[type="radio"] {
    display: none;
}

.prompt-type-toggle label {
    padding: 8px 12px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.prompt-type-toggle label:hover {
    background: var(--bg-primary);
    border-color: var(--accent);
}

.prompt-type-toggle input[type="radio"]:checked + label {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

/* Prompt actions */
.prompt-actions {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 15px;
}

.btn-generate-prompt,
.btn-save-template {
    width: 100%;
    padding: 10px 12px;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

.btn-generate-prompt {
    background: var(--accent);
    color: white;
}

.btn-generate-prompt:hover:not(:disabled) {
    background: var(--accent-hover);
}

.btn-generate-prompt:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-save-template {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.btn-save-template:hover {
    background: var(--bg-tertiary);
    border-color: var(--accent);
    color: var(--accent);
}

/* Prompt Mode Main Content */
.mode-content {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
}

#prompt-content {
    overflow-y: auto;
}

.prompt-view {
    display: flex;
    flex-direction: column;
    gap: 25px;
    padding: 20px;
    max-width: 1000px;
    margin: 0 auto;
}

.prompt-source-section,
.prompt-output-section {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
}

.prompt-source-section h3,
.prompt-output-section h3 {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.source-answer {
    color: var(--text-primary);
    line-height: 1.7;
    max-height: 250px;
    overflow-y: auto;
    padding: 10px;
    background: var(--bg-primary);
    border-radius: 6px;
}

.prompt-output-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.btn-copy-prompt {
    padding: 8px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
}

.btn-copy-prompt:hover {
    background: var(--accent);
    color: white;
    border-color: var(--accent);
}

.btn-copy-prompt.copied {
    background: var(--success);
    border-color: var(--success);
    color: white;
}

.prompt-output-text {
    background: var(--bg-primary);
    padding: 20px;
    border-radius: 8px;
    color: var(--text-primary);
    line-height: 1.8;
    min-height: 120px;
    font-size: 1rem;
}

.prompt-output-text p {
    margin: 0;
    white-space: pre-wrap;
}

.prompt-placeholder {
    color: var(--text-muted);
    font-style: italic;
    text-align: center;
    padding: 30px 20px;
}

.loading-prompt {
    color: var(--accent);
    text-align: center;
    padding: 30px 20px;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.error-prompt {
    color: #e94e4e;
    text-align: center;
    padding: 30px 20px;
}

/* ===== Prompt Mode: Text-First Multi-Shot Layout ===== */

#prompt-mode-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    gap: 20px;
    padding: 20px;
}

/* Selection Tools (in sidebar) */
.selection-tools {
    margin-bottom: 15px;
}

/* Buttons for sidebar */
.btn-primary, .btn-secondary {
    width: 100%;
    padding: 10px;
    border: none;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

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

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

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

.btn-secondary:hover {
    background: var(--bg-hover);
}

#toggle-selection-mode {
    width: 100%;
    padding: 10px;
    border: none;
    border-radius: 6px;
    background: var(--accent);
    color: white;
    cursor: pointer;
    font-weight: 600;
}

#toggle-selection-mode.active {
    background: var(--success);
}

#current-selection {
    margin-top: 15px;
    padding: 10px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

#current-selection h4 {
    font-size: 0.9rem;
    margin: 0 0 8px 0;
    color: var(--text-secondary);
}

#selection-preview {
    font-size: 0.85rem;
    font-style: italic;
    margin: 10px 0;
    max-height: 60px;
    overflow-y: auto;
    color: var(--text-primary);
}

.selection-actions {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.selection-actions button {
    padding: 8px;
    border: none;
    border-radius: 4px;
    background: var(--accent);
    color: white;
    cursor: pointer;
    font-size: 0.85rem;
}

.selection-actions button:hover {
    background: var(--accent-hover);
}

/* Shots List */
.shots-list {
    flex: 1;
    display: flex;
    flex-direction: column;
    margin-bottom: 15px;
}

.shots-list h3 {
    margin: 0 0 10px 0;
    font-size: 1rem;
}

#shots-container {
    flex: 1;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 10px;
    max-height: 400px;
}

.shot-item {
    padding: 10px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    border-left: 3px solid var(--shot-color);
    cursor: pointer;
    transition: all 0.2s;
}

.shot-item:hover {
    background: var(--bg-hover);
    transform: translateX(3px);
}

.shot-item.active {
    background: var(--accent);
    color: white;
    border-left-color: white;
}

.shot-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 5px;
}

.shot-item-title {
    font-weight: 600;
    font-size: 0.95rem;
}

.shot-item-preview {
    font-size: 0.85rem;
    opacity: 0.8;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Right Main Area */
.prompt-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 20px;
    overflow: hidden;
}

/* Research Text Display */
.research-text-container {
    flex: 3;
    min-height: 100px;
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary);
    border-radius: 12px;
    overflow: hidden;
    transition: flex 0.3s ease;
}

.research-text-container.collapsed {
    flex: 0 0 50px;
    min-height: 50px;
    max-height: 50px;
}

.research-text-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    border-bottom: 1px solid var(--border);
}

.research-text-header h3 {
    margin: 0;
}

.research-text-header button {
    padding: 6px 12px;
    border: none;
    border-radius: 4px;
    background: var(--accent);
    color: white;
    cursor: pointer;
}

#research-text-content {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    line-height: 1.8;
    user-select: text;
}

.research-text-container.collapsed #research-text-content,
.research-text-container.collapsed .color-legend {
    display: none;
}

.research-text-container.collapsed .research-text-header {
    border-bottom: none;
    padding: 10px 20px;
}

.research-text-container.collapsed .research-text-header h3 {
    font-size: 0.9rem;
}

/* Text Selection Highlighting */
.selectable-text {
    position: relative;
}

.text-highlight {
    background-color: var(--highlight-color);
    padding: 2px 0;
    border-radius: 3px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.text-highlight:hover {
    filter: brightness(1.2);
}

/* Color Legend */
.color-legend {
    padding: 10px 20px;
    background: var(--bg-primary);
    border-top: 1px solid var(--border);
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
}

.legend-color {
    width: 20px;
    height: 20px;
    border-radius: 4px;
}

/* Resize Handle */
.resize-handle {
    flex: 0 0 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: ns-resize;
    position: relative;
    z-index: 10;
    transition: opacity 0.3s ease, flex 0.3s ease;
}

/* Hide resize handle when research is collapsed */
.research-text-container.collapsed + .resize-handle {
    flex: 0 0 0px;
    opacity: 0;
    pointer-events: none;
}

.resize-handle:hover .resize-handle-bar {
    background: var(--accent);
}

.resize-handle-bar {
    width: 50px;
    height: 4px;
    background: var(--border-color);
    border-radius: 2px;
    transition: background 0.2s;
}

.resize-handle.dragging .resize-handle-bar {
    background: var(--accent);
}

/* Shot Editor */
.shot-editor {
    flex: 2;
    min-height: 200px;
    display: flex;
    flex-direction: column;
    background: var(--bg-secondary);
    border-radius: 12px;
    overflow: hidden;
    transition: flex 0.3s ease;
}

/* Expand shot editor when research is collapsed */
.research-text-container.collapsed ~ .shot-editor {
    flex: 1;
}

.shot-editor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
    border-bottom: 1px solid var(--border);
}

.shot-editor-header h3 {
    margin: 0;
}

.shot-editor-header button {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-secondary);
}

.shot-editor-header button:hover {
    color: var(--text-primary);
}

.shot-editor-content {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-group textarea {
    resize: vertical;
    font-family: inherit;
}

.form-group input[type="checkbox"] {
    margin-right: 8px;
}

/* Character Entry */
#characters-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 10px;
}

.character-entry {
    display: flex;
    gap: 10px;
    padding: 10px;
    background: var(--bg-primary);
    border-radius: 6px;
}

.character-entry input {
    flex: 1;
}

.character-entry button {
    background: var(--danger);
    color: white;
    border: none;
    border-radius: 4px;
    padding: 5px 10px;
    cursor: pointer;
}

.character-entry button:hover {
    opacity: 0.8;
}

/* Buttons */
.btn-small {
    padding: 6px 12px;
    font-size: 0.85rem;
    border: none;
    border-radius: 4px;
    background: var(--accent);
    color: white;
    cursor: pointer;
}

.btn-small:hover {
    background: var(--accent-hover);
}

.shot-editor-actions {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}

.shot-editor-actions button {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
}

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

.btn-danger:hover {
    opacity: 0.9;
}

/* Prompt Preview */
#shot-prompt-preview {
    margin-top: 20px;
    padding: 15px;
    background: var(--bg-primary);
    border-radius: 6px;
}

#shot-prompt-preview h4 {
    margin: 0 0 10px 0;
}

#shot-prompt-content {
    max-height: 150px;
    overflow-y: auto;
    background: var(--bg-secondary);
    padding: 10px;
    border-radius: 4px;
    font-size: 0.9rem;
    white-space: pre-wrap;
    font-family: 'Courier New', monospace;
}

#shot-prompt-preview button {
    margin-top: 10px;
    padding: 8px 16px;
    border: none;
    border-radius: 4px;
    background: var(--accent);
    color: white;
    cursor: pointer;
}

/* Color Palette for Shots (up to 10 shots) */
:root {
    --shot-color-1: #3b82f6; /* Blue */
    --shot-color-2: #10b981; /* Green */
    --shot-color-3: #f59e0b; /* Amber */
    --shot-color-4: #ef4444; /* Red */
    --shot-color-5: #8b5cf6; /* Purple */
    --shot-color-6: #ec4899; /* Pink */
    --shot-color-7: #14b8a6; /* Teal */
    --shot-color-8: #f97316; /* Orange */
    --shot-color-9: #6366f1; /* Indigo */
    --shot-color-10: #84cc16; /* Lime */
}

/* Responsive adjustments */
@media (max-width: 1024px) {
    #prompt-mode-container {
        flex-direction: column;
    }
    
    .prompt-sidebar {
        width: 100%;
    }
    
    .research-text-container,
    .shot-editor {
        flex: 1 1 auto;
    }
}