/* CMMC AI Agents - Web UI Styles */

:root {
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #252525;
    --bg-hover: #2a2a2a;

    --text-primary: #e5e5e5;
    --text-secondary: #a0a0a0;
    --text-muted: #666;

    --accent-blue: #3b82f6;
    --accent-green: #22c55e;
    --accent-yellow: #eab308;
    --accent-orange: #f97316;
    --accent-purple: #a855f7;
    --accent-red: #ef4444;
    --accent-cyan: #06b6d4;

    --border-color: #333;
    --border-radius: 8px;

    --font-mono: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    height: 100%;
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
}

/* Layout */
.app-container {
    display: flex !important;
    flex-direction: row !important;
    height: 100vh;
    width: 100%;
    overflow: hidden;
}

.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-width: 0;
    height: 100vh;
    overflow: hidden;
}

/* Sidebar */
.sidebar {
    width: 260px;
    min-width: 260px;
    max-width: 260px;
    height: 100vh;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    overflow: hidden;
}

.sidebar.collapsed {
    width: 0;
    min-width: 0;
    max-width: 0;
    padding: 0;
}

.sidebar-header {
    padding: 16px;
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
}

.new-chat-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 16px;
    background: var(--accent-blue);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s;
}

.new-chat-btn:hover {
    background: #2563eb;
}

.new-chat-btn svg {
    width: 18px;
    height: 18px;
}

.sidebar-search {
    padding: 12px 16px;
    flex-shrink: 0;
}

.sidebar-search input {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.85rem;
}

.sidebar-search input:focus {
    outline: none;
    border-color: var(--accent-blue);
}

.sidebar-search input::placeholder {
    color: var(--text-muted);
}

.session-list {
    flex: 1;
    overflow-y: auto;
    padding: 8px;
}

.session-item {
    display: flex;
    align-items: center;
    padding: 12px;
    margin-bottom: 4px;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s;
    border: 1px solid transparent;
}

.session-item:hover {
    background: var(--bg-hover);
}

.session-item.active {
    background: var(--bg-tertiary);
    border-color: var(--accent-blue);
}

.session-item-content {
    flex: 1;
    min-width: 0;
}

.session-item-title {
    font-size: 0.9rem;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    margin-bottom: 4px;
}

.session-item-time {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.session-item-actions {
    opacity: 0;
    transition: opacity 0.2s;
}

.session-item:hover .session-item-actions {
    opacity: 1;
}

.session-action-btn {
    background: none;
    border: none;
    padding: 4px;
    cursor: pointer;
    color: var(--text-muted);
    border-radius: 4px;
}

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

.session-list-empty {
    padding: 24px 16px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.sidebar-footer {
    padding: 16px;
    border-top: 1px solid var(--border-color);
    text-align: center;
}

.sidebar-footer-text {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Session Context Menu */
.session-context-menu {
    position: fixed;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    padding: 4px;
    z-index: 1000;
    min-width: 150px;
}

.session-context-menu button {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 12px;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 0.85rem;
    cursor: pointer;
    border-radius: 4px;
    text-align: left;
}

.session-context-menu button:hover {
    background: var(--bg-hover);
}

.session-context-menu button.danger {
    color: var(--accent-red);
}

.session-context-menu button.danger:hover {
    background: rgba(239, 68, 68, 0.1);
}

/* Menu Button */
.menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: none;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: background 0.2s, color 0.2s;
}

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

.menu-btn svg {
    width: 20px;
    height: 20px;
}

/* Session Title Input */
.session-title-input {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-primary);
    font-size: 1.1rem;
    font-weight: 600;
    padding: 6px 12px;
    border-radius: 6px;
    min-width: 200px;
    max-width: 400px;
}

.session-title-input:hover {
    border-color: var(--border-color);
}

.session-title-input:focus {
    outline: none;
    border-color: var(--accent-blue);
    background: var(--bg-tertiary);
}

/* Memory Toggle */
.memory-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    padding: 6px 12px;
    background: var(--bg-tertiary);
    border-radius: 20px;
    user-select: none;
}

.memory-toggle input {
    display: none;
}

.toggle-slider {
    width: 36px;
    height: 20px;
    background: var(--text-muted);
    border-radius: 10px;
    position: relative;
    transition: background 0.2s;
}

.toggle-slider::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    background: white;
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: transform 0.2s;
}

.memory-toggle input:checked + .toggle-slider {
    background: var(--accent-green);
}

.memory-toggle input:checked + .toggle-slider::after {
    transform: translateX(16px);
}

.toggle-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Header */
.header {
    padding: 12px 24px;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-secondary);
    flex-shrink: 0;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
}

.header-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.header-right {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex: 1;
}

.header h1 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.status-indicators {
    display: flex;
    gap: 16px;
    align-items: center;
}

.status-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    padding: 4px 10px;
    background: var(--bg-tertiary);
    border-radius: 12px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--text-muted);
}

.status-badge.connected .status-dot {
    background: var(--accent-green);
    box-shadow: 0 0 8px var(--accent-green);
}

.status-badge.error .status-dot {
    background: var(--accent-red);
}

.doc-count {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.upload-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--accent-blue);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}

.upload-btn:hover {
    background: #2563eb;
}

.upload-btn:active {
    transform: scale(0.95);
}

.upload-btn svg {
    width: 14px;
    height: 14px;
}

.browse-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--accent-purple);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}

.browse-btn:hover {
    background: #9333ea;
}

.browse-btn:active {
    transform: scale(0.95);
}

.browse-btn svg {
    width: 14px;
    height: 14px;
}

.index-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--accent-orange);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}

.index-btn:hover {
    background: #ea580c;
}

.index-btn:active {
    transform: scale(0.95);
}

.index-btn svg {
    width: 14px;
    height: 14px;
}

.extend-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--accent-green);
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}

.extend-btn:hover {
    background: #16a34a;
}

.extend-btn:active {
    transform: scale(0.95);
}

.extend-btn.loading {
    opacity: 0.7;
    cursor: wait;
}

#model-keepalive {
    font-family: var(--font-mono);
}

#model-keepalive.warning {
    background: var(--accent-orange);
    color: white;
}

#model-keepalive.critical {
    background: var(--accent-red);
    color: white;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

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

/* Chat Container */
.chat-container {
    flex: 1;
    overflow-y: auto;
    padding: 24px;
}

.chat-messages {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Messages */
.message {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 900px;
}

.message.user-message {
    align-self: flex-end;
}

.message.assistant-message {
    align-self: flex-start;
}

.message.system-message {
    align-self: center;
    text-align: center;
}

.message-content {
    padding: 16px 20px;
    border-radius: var(--border-radius);
    line-height: 1.6;
}

.user-message .message-content {
    background: var(--accent-blue);
    color: white;
    border-radius: 16px 16px 4px 16px;
}

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

.system-message .message-content {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    max-width: 600px;
}

.system-message ul {
    text-align: left;
    padding-left: 20px;
    margin: 12px 0;
}

.system-message li {
    margin: 4px 0;
    color: var(--text-secondary);
}

.system-message .hint {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 12px;
    font-style: italic;
}

/* Agent Activity Panel */
.agent-activity {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 12px;
    overflow: hidden;
}

.activity-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    background: var(--bg-secondary);
    cursor: pointer;
    user-select: none;
}

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

.activity-title {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.activity-title .icon {
    font-size: 1rem;
}

.activity-toggle {
    font-size: 0.75rem;
    color: var(--text-muted);
    transition: transform 0.2s ease;
    display: inline-block;
}

.activity-header:hover .activity-toggle {
    color: var(--text-secondary);
}

.activity-content {
    max-height: 400px;
    overflow-y: auto;
    transition: max-height 0.4s ease-out, opacity 0.3s ease-out;
    opacity: 1;
}

.activity-content.collapsed {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height 0.4s ease-in, opacity 0.2s ease-in;
}

.activity-event {
    display: flex;
    gap: 12px;
    padding: 10px 14px;
    border-top: 1px solid var(--border-color);
    font-size: 0.85rem;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

.event-icon {
    flex-shrink: 0;
    width: 20px;
    text-align: center;
}

.event-body {
    flex: 1;
    min-width: 0;
}

.event-agent {
    font-weight: 600;
    font-size: 0.75rem;
    margin-bottom: 4px;
}

.event-text {
    color: var(--text-secondary);
    white-space: pre-wrap;
    word-break: break-word;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1.5;
}

/* Event type styling */
.event-thinking .event-icon { color: var(--accent-purple); }
.event-thinking .event-agent { color: var(--accent-purple); }

.event-tool_call .event-icon { color: var(--accent-cyan); }
.event-tool_call .event-agent { color: var(--accent-cyan); }

.event-tool_result .event-icon { color: var(--accent-green); }
.event-tool_result .event-agent { color: var(--accent-green); }

.event-handoff .event-icon { color: var(--accent-orange); }
.event-handoff .event-agent { color: var(--accent-orange); }

.event-response .event-icon { color: var(--accent-blue); }
.event-response .event-agent { color: var(--accent-blue); }

.event-error .event-icon { color: var(--accent-red); }
.event-error .event-agent { color: var(--accent-red); }
.event-error .event-text { color: var(--accent-red); }

/* Conversational Thought Bubbles */
.agent-thought {
    display: flex;
    gap: 12px;
    padding: 12px 14px;
    margin: 8px 0;
    background: rgba(59, 130, 246, 0.05);
    border-left: 3px solid var(--accent-blue);
    border-radius: 8px;
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.agent-avatar {
    flex-shrink: 0;
    font-size: 1.5rem;
    line-height: 1;
    width: 24px;
    text-align: center;
}

.agent-content {
    flex: 1;
    min-width: 0;
}

.agent-name {
    font-weight: 600;
    font-size: 0.8rem;
    margin-bottom: 6px;
    letter-spacing: 0.3px;
}

.thought-bubble {
    font-style: italic;
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.85rem;
}

/* Tool Invocation Styling */
.agent-thought.tool-invocation {
    background: rgba(6, 182, 212, 0.05);
    border-left-color: var(--accent-cyan);
}

.tool-call-content {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
}

.tool-icon {
    font-size: 1rem;
}

.tool-text {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
}

/* Tool Result Styling */
.agent-thought.tool-result {
    background: rgba(34, 197, 94, 0.05);
    border-left-color: var(--accent-green);
}

.tool-result-content {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
}

.result-icon {
    font-size: 1rem;
    font-weight: bold;
}

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

.tool-result-content.has-results .result-icon {
    color: var(--accent-green);
}

.tool-result-content.no-results .result-icon {
    color: var(--text-muted);
}

/* Handoff Styling */
.agent-thought.handoff {
    background: rgba(249, 115, 22, 0.05);
    border-left-color: var(--accent-orange);
}

.handoff-content {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
}

.handoff-icon {
    font-size: 1rem;
}

.handoff-text {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-style: italic;
}

/* Response content */
.response-content {
    padding: 16px 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    line-height: 1.7;
}

.response-content p {
    margin-bottom: 12px;
}

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

.response-content ul, .response-content ol {
    margin: 12px 0;
    padding-left: 24px;
}

.response-content li {
    margin: 6px 0;
}

.response-content code {
    background: var(--bg-tertiary);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.9em;
}

.response-content pre {
    background: var(--bg-tertiary);
    padding: 16px;
    border-radius: var(--border-radius);
    overflow-x: auto;
    margin: 12px 0;
}

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

.response-content strong {
    color: var(--text-primary);
}

/* Response loading indicator */
.response-loading {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-style: italic;
}

.response-loading .loading-dots {
    font-size: 1.5rem;
    letter-spacing: 4px;
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

/* Loading indicator */
.loading-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

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

.loading-dots span {
    width: 6px;
    height: 6px;
    background: var(--accent-blue);
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out both;
}

.loading-dots span:nth-child(1) { animation-delay: -0.32s; }
.loading-dots span:nth-child(2) { animation-delay: -0.16s; }
.loading-dots span:nth-child(3) { animation-delay: 0s; }

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

/* Input Area */
.input-container {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
    flex-shrink: 0;
}

.query-form {
    max-width: 900px;
    margin: 0 auto;
}

.input-wrapper {
    display: flex;
    gap: 12px;
    align-items: flex-end;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 8px 12px;
    transition: border-color 0.2s;
}

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

.input-wrapper textarea {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 1rem;
    resize: none;
    outline: none;
    max-height: 200px;
    line-height: 1.5;
}

.input-wrapper textarea::placeholder {
    color: var(--text-muted);
}

.submit-btn {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 8px;
    background: var(--accent-blue);
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, transform 0.1s;
}

.submit-btn:hover {
    background: #2563eb;
}

.submit-btn:active {
    transform: scale(0.95);
}

.submit-btn:disabled {
    background: var(--text-muted);
    cursor: not-allowed;
}

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

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

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

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

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

/* Tables */
.response-table {
    width: 100%;
    border-collapse: collapse;
    margin: 16px 0;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.response-table th {
    background: var(--bg-hover);
    color: var(--text-primary);
    font-weight: 600;
    text-align: left;
    padding: 12px 16px;
    border-bottom: 2px solid var(--border-color);
}

.response-table td {
    padding: 10px 16px;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.response-table tr:last-child td {
    border-bottom: none;
}

.response-table tr:hover {
    background: var(--bg-hover);
}

/* Sources Section */
.sources-divider {
    margin: 24px 0;
    border: none;
    border-top: 2px solid var(--border-color);
}

.sources-section {
    margin-top: 20px;
    padding: 20px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
}

.sources-section h3 {
    margin: 0 0 8px 0;
    color: var(--text-primary);
    font-size: 1.1rem;
}

.sources-hint {
    color: var(--text-muted);
    font-size: 0.85rem;
    font-style: italic;
    margin-bottom: 16px;
}

.source-item {
    margin-top: 16px;
    padding: 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    transition: border-color 0.2s;
}

.source-item:hover {
    border-color: var(--accent-blue);
}

.source-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
    gap: 12px;
}

.source-title strong {
    color: var(--text-primary);
    font-size: 0.95rem;
}

.source-link {
    color: var(--accent-blue);
    text-decoration: none;
    font-size: 0.85rem;
    cursor: pointer;
    padding: 4px 10px;
    border-radius: 4px;
    transition: background 0.2s;
    white-space: nowrap;
}

.source-link:hover {
    background: var(--bg-hover);
    text-decoration: underline;
}

.source-meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-bottom: 8px;
    font-family: var(--font-mono);
}

.source-preview {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-style: italic;
    padding: 8px 12px;
    background: var(--bg-primary);
    border-left: 3px solid var(--accent-blue);
    border-radius: 4px;
    margin: 8px 0;
    line-height: 1.5;
}

.source-actions {
    margin-top: 8px;
    display: flex;
    gap: 12px;
}

.source-download {
    color: var(--accent-green);
    text-decoration: none;
    font-size: 0.8rem;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: background 0.2s;
}

.source-download:hover {
    background: var(--bg-hover);
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: 0;
        z-index: 100;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .sidebar-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 99;
    }

    .sidebar-overlay.visible {
        display: block;
    }

    .menu-btn {
        display: flex;
    }

    .header-content {
        flex-wrap: wrap;
        gap: 12px;
    }

    .header-left {
        flex: 0 0 auto;
    }

    .header-center {
        order: 3;
        flex: 0 0 100%;
        justify-content: center;
    }

    .session-title-input {
        font-size: 0.9rem;
        min-width: 150px;
    }

    .chat-container {
        padding: 16px;
    }

    .input-container {
        padding: 12px 16px;
    }

    .response-table {
        font-size: 0.85rem;
    }

    .response-table th,
    .response-table td {
        padding: 8px 10px;
    }

    .source-title {
        flex-direction: column;
        align-items: flex-start;
    }

    .status-indicators {
        gap: 8px;
    }

    .status-badge {
        padding: 2px 6px;
        font-size: 0.7rem;
    }
}