:root {
            --bg-primary: #0a0a09;
            --bg-secondary: #121210;
            --bg-tertiary: #1a1918;
            --bg-elevated: #222220;
            --bg-hover: #2a2928;
            
            --text-primary: #f5f5f3;
            --text-secondary: #9a9990;
            --text-tertiary: #5a5950;
            
            --advisor-color: #4a90d9;
            --coach-color: #50a050;
            --architect-color: #9575cd;
            --problem-solver-color: #e57373;
            --compliance-color: #26a69a;
            --parallel-color: #ffa726;

            --accent: var(--advisor-color);
            
            --border-subtle: rgba(255,255,255,0.05);
            --border-light: rgba(255,255,255,0.08);
            
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-full: 9999px;

            --success: #34c759;
            --error: #ff3b30;
            --transition: 0.2s ease;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            font-family: var(--font-ui, 'Inter', -apple-system, BlinkMacSystemFont, system-ui, sans-serif);
            background: var(--bg-primary);
            color: var(--text-primary);
            min-height: 100vh;
            min-height: 100dvh;
            margin: 0;
            overflow: hidden;
            font-size: 15px;
            line-height: 1.5;
            -webkit-font-smoothing: antialiased;
        }

        /* Main content container - shifted by sidebar */
        .main-content {
            display: flex;
            flex-direction: column;
            height: 100vh;
            height: 100dvh;
            overflow: hidden;
        }

        /* Header */
        .header {
            padding: 12px 16px;
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .header-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            overflow: hidden;
            position: relative;
            flex-shrink: 0;
        }

        .header-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .header-avatar::after {
            content: '';
            position: absolute;
            bottom: 1px;
            right: 1px;
            width: 10px;
            height: 10px;
            background: var(--success);
            border-radius: 50%;
            border: 2px solid var(--bg-secondary);
        }

        .header-info {
            flex: 1;
            min-width: 0;
        }

        .header-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-primary);
        }

        .header-subtitle {
            font-size: 12px;
            color: var(--text-secondary);
            margin-top: 1px;
        }

        .header-btn {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-sm);
            background: var(--bg-tertiary);
            border: 1px solid var(--border-light);
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            font-size: 14px;
            flex-shrink: 0;
        }

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

        /* Auth Status & User Menu */
        .auth-status {
            margin-left: auto;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .user-menu {
            position: relative;
        }

        .user-menu-trigger {
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 6px 10px;
            background: var(--bg-tertiary);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: var(--transition);
        }

        .user-menu-trigger:hover {
            background: var(--bg-hover);
            border-color: var(--border-light);
        }

        .user-avatar {
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            font-weight: 600;
            color: white;
            text-transform: uppercase;
        }

        .user-info {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            max-width: 150px;
        }

        .user-name {
            font-size: 13px;
            font-weight: 500;
            color: var(--text-primary);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            width: 100%;
        }

        .user-badge {
            font-size: 10px;
            color: var(--accent);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.3px;
        }

        .user-menu-dropdown {
            position: absolute;
            top: calc(100% + 4px);
            right: 0;
            background: var(--bg-elevated);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            min-width: 200px;
            box-shadow: 0 8px 24px rgba(0,0,0,0.4);
            display: none;
            z-index: 1000;
            overflow: hidden;
        }

        .user-menu.active .user-menu-dropdown {
            display: block;
        }

        .user-menu-header {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border-subtle);
        }

        .user-menu-email {
            font-size: 12px;
            color: var(--text-secondary);
            word-break: break-all;
        }

        .user-menu-item {
            padding: 10px 16px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-primary);
            text-decoration: none;
            cursor: pointer;
            transition: var(--transition);
            font-size: 14px;
        }

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

        .user-menu-item .icon {
            width: 16px;
            text-align: center;
        }

        .user-menu-divider {
            height: 1px;
            background: var(--border-subtle);
            margin: 4px 0;
        }

        .user-menu-item.danger {
            color: var(--text-secondary);
        }

        .user-menu-item.danger:hover {
            color: var(--error);
            background: rgba(255, 59, 48, 0.1);
        }

        .auth-btn-signin {
            background: var(--accent);
            color: #fff;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 6px 14px;
            border-radius: var(--radius-sm);
            font-size: 13px;
            font-weight: 500;
            transition: var(--transition);
        }

        .auth-btn-signin:hover {
            opacity: 0.9;
        }

        .auth-btn-signin:active {
            transform: scale(0.98);
        }

        /* Toast Notifications */
        .toast-container {
            position: fixed;
            top: 20px;
            right: 20px;
            z-index: 10001;
            display: flex;
            flex-direction: column;
            gap: 12px;
            pointer-events: none;
        }

        .toast {
            background: var(--bg-elevated);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-md);
            padding: 14px 18px;
            min-width: 280px;
            max-width: 400px;
            box-shadow: 0 8px 24px rgba(0,0,0,0.4);
            display: flex;
            align-items: center;
            gap: 12px;
            pointer-events: all;
            animation: slideInRight 0.3s ease;
        }

        @keyframes slideInRight {
            from {
                opacity: 0;
                transform: translateX(100px);
            }
            to {
                opacity: 1;
                transform: translateX(0);
            }
        }

        .toast.removing {
            animation: slideOutRight 0.3s ease;
        }

        @keyframes slideOutRight {
            from {
                opacity: 1;
                transform: translateX(0);
            }
            to {
                opacity: 0;
                transform: translateX(100px);
            }
        }

        .toast-icon {
            font-size: 20px;
            flex-shrink: 0;
        }

        .toast-content {
            flex: 1;
        }

        .toast-title {
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 2px;
        }

        .toast-message {
            font-size: 13px;
            color: var(--text-secondary);
        }

        .toast.success, .toast--success {
            border-left: 3px solid var(--success);
        }

        .toast.error, .toast--error {
            border-left: 3px solid var(--error);
        }

        .toast.info, .toast--info {
            border-left: 3px solid var(--accent);
        }

        .toast.warning, .toast--warning {
            border-left: 3px solid #fbbf24;
        }

        /* Active Agent Bar */
        .agent-bar {
            padding: 8px 16px;
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-subtle);
            display: none;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .agent-bar.visible {
            display: flex;
        }

        .agent-bar-icon {
            width: 24px;
            height: 24px;
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            background: var(--accent);
            color: white;
            flex-shrink: 0;
        }

        .agent-bar-text {
            font-size: 13px;
            font-weight: 500;
            color: var(--accent);
        }

        /* Article Discussion Banner */
        .article-discussion-banner {
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-subtle);
            padding: 10px 16px;
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .article-discussion-banner .banner-icon {
            font-size: 16px;
        }

        .article-discussion-banner .banner-content {
            flex: 1;
            min-width: 0;
        }

        .article-discussion-banner .banner-label {
            color: var(--text-secondary);
            font-size: 11px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .article-discussion-banner .banner-title {
            color: var(--text-primary);
            font-size: 13px;
            font-weight: 500;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .article-discussion-banner .banner-close {
            background: none;
            border: none;
            color: var(--text-tertiary);
            cursor: pointer;
            font-size: 18px;
            padding: 4px 8px;
            border-radius: 4px;
            transition: var(--transition);
        }

        .article-discussion-banner .banner-close:hover {
            background: var(--bg-hover);
            color: var(--text-secondary);
        }

        /* Chat Area */
        .chat-area {
            flex: 1;
            overflow-y: auto;
            overflow-x: hidden;
            overscroll-behavior: contain;
        }

        .chat-area::-webkit-scrollbar {
            width: 4px;
        }

        .chat-area::-webkit-scrollbar-thumb {
            background: var(--border-light);
            border-radius: 2px;
        }

        /* Welcome Screen */
        .welcome {
            min-height: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 32px 20px;
            text-align: center;
        }

        .welcome-avatar {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            overflow: hidden;
            margin-bottom: 20px;
            box-shadow: 0 0 0 3px var(--bg-primary), 0 0 0 5px var(--accent);
        }

        .welcome-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .welcome-title {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .welcome-desc {
            font-size: 14px;
            color: var(--text-secondary);
            max-width: 320px;
            margin-bottom: 32px;
            line-height: 1.6;
        }

        .welcome-prompts {
            display: flex;
            flex-direction: column;
            gap: 10px;
            width: 100%;
            max-width: 360px;
        }

        .welcome-prompt {
            padding: 14px 18px;
            background: var(--bg-tertiary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            color: var(--text-secondary);
            font-size: 14px;
            text-align: left;
            cursor: pointer;
            transition: var(--transition);
            line-height: 1.4;
        }

        .welcome-prompt:hover {
            background: var(--bg-hover);
            border-color: var(--border-light);
            color: var(--text-primary);
        }

        .welcome-prompt:active {
            transform: scale(0.98);
        }

        /* Messages */
        .messages {
            padding: 16px;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .message {
            max-width: 85%;
            animation: fadeIn 0.25s ease;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(6px); }
            to { opacity: 1; transform: translateY(0); }
        }

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

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

        .message-bubble {
            padding: 12px 16px;
            border-radius: var(--radius-lg);
            font-size: 15px;
            line-height: 1.6;
        }

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

        .message.assistant .message-bubble {
            background: var(--bg-tertiary);
            border: 1px solid var(--border-subtle);
            border-bottom-left-radius: 4px;
        }

        /* Error Messages */
        .error-bubble {
            border-color: rgba(239, 68, 68, 0.3) !important;
            background: rgba(239, 68, 68, 0.05) !important;
        }

        .error-content {
            display: flex;
            flex-direction: column;
            align-items: flex-start;
            gap: 12px;
        }

        .error-icon {
            font-size: 20px;
        }

        .error-text {
            color: var(--text-secondary);
            line-height: 1.5;
        }

        .retry-btn {
            background: var(--accent);
            color: white;
            border: none;
            padding: 8px 16px;
            border-radius: var(--radius-md);
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s ease;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .retry-btn:hover {
            background: var(--accent-hover);
            transform: translateY(-1px);
        }

        .retry-btn:active {
            transform: translateY(0);
        }

        /* Streaming Messages */
        .streaming-cursor {
            display: inline-block;
            width: 2px;
            height: 1.1em;
            background: var(--accent);
            animation: blink 1s step-end infinite;
            margin-left: 1px;
            vertical-align: text-bottom;
        }

        @keyframes blink {
            0%, 50% { opacity: 1; }
            51%, 100% { opacity: 0; }
        }

        .message.streaming .message-bubble {
            border-color: var(--accent);
        }

        /* Message Header */
        .message-header {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 10px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border-subtle);
            flex-wrap: wrap;
        }

        .message-agent-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 3px 10px 3px 4px;
            border-radius: 20px;
            background: rgba(255,255,255,0.04);
            border: 1px solid rgba(255,255,255,0.06);
        }

        .message-agent-icon {
            width: 22px;
            height: 22px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            flex-shrink: 0;
        }

        .message-agent-icon.advisor { background: rgba(74, 144, 217, 0.15); }
        .message-agent-icon.coach { background: rgba(80, 160, 80, 0.15); }
        .message-agent-icon.architect { background: rgba(149, 117, 205, 0.15); }
        .message-agent-icon.problem_solver { background: rgba(229, 115, 115, 0.15); }
        .message-agent-icon.compliance { background: rgba(38, 166, 154, 0.15); }
        .message-agent-icon.parallel { background: rgba(255, 167, 38, 0.15); }

        .message-agent-name {
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.01em;
        }

        .message-agent-name.advisor { color: var(--advisor-color); }
        .message-agent-name.coach { color: var(--coach-color); }
        .message-agent-name.architect { color: var(--architect-color); }
        .message-agent-name.problem_solver { color: var(--problem-solver-color); }
        .message-agent-name.compliance { color: var(--compliance-color); }
        .message-agent-name.parallel { color: var(--parallel-color); }

        .message-tool {
            margin-left: auto;
            font-size: 10px;
            color: var(--coach-color);
            background: rgba(80, 160, 80, 0.1);
            padding: 2px 8px;
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .message-delegation {
            font-size: 10px;
            color: var(--text-tertiary);
            background: rgba(255,255,255,0.04);
            padding: 2px 8px;
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .message-parallel-agents {
            font-size: 10px;
            color: var(--parallel-color);
            background: rgba(255, 167, 38, 0.1);
            padding: 2px 8px;
            border-radius: var(--radius-full);
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .approval-card {
            margin-top: 12px;
            padding: 12px 16px;
            background: rgba(255, 167, 38, 0.06);
            border: 1px solid rgba(255, 167, 38, 0.2);
            border-radius: 12px;
        }
        .approval-header {
            font-size: 11px;
            font-weight: 600;
            color: var(--parallel-color);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 8px;
        }
        .approval-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
        }
        .approval-desc {
            font-size: 12px;
            color: var(--text-secondary);
            margin-bottom: 12px;
            line-height: 1.4;
        }
        .approval-actions { display: flex; gap: 8px; }
        .approval-btn {
            padding: 6px 16px;
            border-radius: 20px;
            border: none;
            font-size: 12px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s;
        }
        .approval-btn.approve { background: var(--coach-color); color: white; }
        .approval-btn.approve:hover { background: #5cb85c; /* coach-color lighter */ }
        .approval-btn.reject {
            background: rgba(255,255,255,0.08);
            color: var(--text-secondary);
            border: 1px solid var(--border-light);
        }
        .approval-btn.reject:hover { background: rgba(229,115,115,0.15); color: #e57373; border-color: #e57373; }
        .approval-btn:disabled { opacity: 0.5; cursor: not-allowed; }
        .approval-resolved {
            font-size: 12px;
            padding: 6px 12px;
            border-radius: 20px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .approval-resolved.approved { background: rgba(80,160,80,0.15); color: #50a050; }
        .approval-resolved.rejected { background: rgba(229,115,115,0.15); color: #e57373; }

        /* Message Content - Markdown Rendered */
        .message-content {
            color: var(--text-primary);
        }

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

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

        .message-content strong {
            font-weight: 600;
            color: var(--text-primary);
        }

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

        .message-content h1, .message-content h2, .message-content h3 {
            font-weight: 600;
            margin: 16px 0 8px 0;
            color: var(--text-primary);
        }

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

        .message-content h2 {
            font-size: 15px;
        }

        .message-content h3 {
            font-size: 14px;
            color: var(--text-secondary);
        }

        .message-content ul, .message-content ol {
            margin: 8px 0;
            padding-left: 0;
            list-style: none;
        }

        .message-content li {
            position: relative;
            padding-left: 20px;
            margin-bottom: 6px;
        }

        .message-content li::before {
            content: '→';
            position: absolute;
            left: 0;
            color: var(--text-tertiary);
        }

        .message-content ol {
            counter-reset: item;
        }

        .message-content ol li {
            counter-increment: item;
        }

        .message-content ol li::before {
            content: counter(item) '.';
        }

        .message-content code {
            background: var(--bg-elevated);
            padding: 2px 6px;
            border-radius: 4px;
            font-family: var(--font-mono, 'JetBrains Mono', 'SF Mono', monospace);
            font-size: 13px;
        }

        .message-content pre {
            background: var(--bg-elevated);
            padding: 12px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            margin: 12px 0;
        }

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

        .message-content blockquote {
            border-left: 3px solid var(--accent);
            padding-left: 12px;
            margin: 12px 0;
            color: var(--text-secondary);
        }

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

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

        .message-content table {
            width: 100%;
            border-collapse: collapse;
            margin: 12px 0;
            font-size: 13px;
        }

        .message-content th, .message-content td {
            padding: 8px;
            border: 1px solid var(--border-light);
            text-align: left;
        }

        .message-content th {
            background: var(--bg-elevated);
            font-weight: 600;
        }

        /* Feedback */
        .message-feedback {
            display: flex;
            gap: 6px;
            margin-top: 10px;
            padding-top: 10px;
            border-top: 1px solid var(--border-subtle);
        }

        .feedback-btn {
            padding: 4px 10px;
            background: transparent;
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-full);
            color: var(--text-tertiary);
            font-size: 11px;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .feedback-btn:hover {
            border-color: var(--text-tertiary);
            color: var(--text-secondary);
        }

        .feedback-btn.selected {
            background: var(--accent);
            border-color: var(--accent);
            color: white;
        }

        .feedback-thanks {
            font-size: 11px;
            color: var(--coach-color);
        }

        /* Agent Transition */
        .agent-transition {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 12px;
            gap: 12px;
        }

        .agent-transition-line {
            height: 1px;
            width: 40px;
            background: linear-gradient(90deg, transparent, var(--border-light), transparent);
        }

        .agent-transition-text {
            font-size: 11px;
            color: var(--text-tertiary);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        /* Typing Indicator */
        .typing {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 12px 16px;
            animation: fadeIn 0.2s ease;
        }

        .typing-avatar {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            overflow: hidden;
            flex-shrink: 0;
        }

        .typing-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .typing-content {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .typing-label {
            font-size: 12px;
            color: var(--accent);
            font-weight: 500;
        }

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

        .typing-dots span {
            width: 6px;
            height: 6px;
            background: var(--accent);
            border-radius: 50%;
            animation: bounce 1.4s ease-in-out infinite;
            opacity: 0.4;
        }

        .typing-dots span:nth-child(1) { animation-delay: 0s; }
        .typing-dots span:nth-child(2) { animation-delay: 0.2s; }
        .typing-dots span:nth-child(3) { animation-delay: 0.4s; }

        @keyframes bounce {
            0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
            30% { transform: translateY(-6px); opacity: 1; }
        }

        /* Input Area */
        .input-area {
            padding: 12px 16px;
            padding-bottom: max(12px, env(safe-area-inset-bottom));
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            flex-shrink: 0;
        }

        .input-wrapper {
            display: flex;
            align-items: flex-end;
            gap: 10px;
            background: var(--bg-tertiary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 6px 6px 6px 14px;
            transition: border-color var(--transition);
        }

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

        .input-field {
            flex: 1;
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-size: 15px;
            font-family: inherit;
            resize: none;
            min-height: 24px;
            max-height: 120px;
            padding: 8px 0;
            line-height: 1.4;
        }

        .input-field:focus {
            outline: none;
        }

        .input-field::placeholder {
            color: var(--text-tertiary);
        }

        .send-btn {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            background: var(--accent);
            border: none;
            color: white;
            font-size: 16px;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .send-btn:hover {
            filter: brightness(1.1);
        }

        .send-btn:disabled {
            background: var(--bg-elevated);
            color: var(--text-tertiary);
            cursor: not-allowed;
        }

        /* File Attachment */
        .attach-btn {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            background: transparent;
            border: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            font-size: 18px;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .attach-btn:hover {
            background: var(--bg-hover);
            color: var(--text-primary);
            border-color: var(--border-light);
        }

        /* Voice / Mic Button */
        .mic-btn {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-md);
            background: transparent;
            border: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            font-size: 18px;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            position: relative;
        }

        .mic-btn:hover {
            background: var(--bg-hover);
            color: var(--text-primary);
            border-color: var(--border-light);
        }

        .mic-btn.recording {
            background: rgba(239, 68, 68, 0.15);
            border-color: var(--error);
            color: var(--error);
            animation: mic-pulse 1.5s ease-in-out infinite;
        }

        @keyframes mic-pulse {
            0%, 100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.3); }
            50% { box-shadow: 0 0 0 8px rgba(239, 68, 68, 0); }
        }

        .recording-indicator {
            display: none;
            align-items: center;
            gap: 8px;
            padding: 4px 10px;
            background: rgba(239, 68, 68, 0.1);
            border-radius: var(--radius-sm);
            font-size: 12px;
            color: var(--error);
        }

        .recording-indicator.visible {
            display: flex;
        }

        .recording-dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--error);
            animation: rec-blink 1s ease-in-out infinite;
        }

        @keyframes rec-blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        /* Audio playback button on messages */
        .play-audio-btn {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            background: transparent;
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            color: var(--text-tertiary);
            font-size: 12px;
            padding: 3px 8px;
            cursor: pointer;
            transition: var(--transition);
            margin-top: 6px;
        }

        .play-audio-btn:hover {
            background: var(--bg-hover);
            color: var(--text-secondary);
            border-color: var(--border-light);
        }

        .play-audio-btn.playing {
            color: var(--accent);
            border-color: var(--accent);
        }

        .file-preview-area {
            display: none;
            padding: 8px 14px 4px;
            gap: 8px;
            flex-wrap: wrap;
        }

        .file-preview-area.visible {
            display: flex;
        }

        .file-preview {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--bg-elevated);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            padding: 6px 10px;
            font-size: 13px;
            color: var(--text-secondary);
            max-width: 250px;
        }

        .file-preview img {
            width: 36px;
            height: 36px;
            object-fit: cover;
            border-radius: 4px;
        }

        .file-preview-name {
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            flex: 1;
        }

        .file-preview-remove {
            background: none;
            border: none;
            color: var(--text-tertiary);
            cursor: pointer;
            font-size: 14px;
            padding: 0 2px;
        }

        .file-preview-remove:hover {
            color: var(--text-primary);
        }

        .sensitivity-select {
            background: var(--bg-tertiary);
            border: 1px solid var(--border-subtle);
            border-radius: 4px;
            color: var(--text-secondary);
            font-size: 11px;
            padding: 2px 4px;
            cursor: pointer;
        }

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

        /* Drop zone overlay */
        .drop-overlay {
            display: none;
            position: absolute;
            inset: 0;
            background: rgba(74, 144, 217, 0.1);
            border: 2px dashed var(--accent);
            border-radius: var(--radius-lg);
            z-index: 100;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            color: var(--accent);
            pointer-events: none;
        }

        .drop-overlay.visible {
            display: flex;
        }

        /* Inline attachment in messages */
        .message-attachment {
            margin-top: 8px;
        }

        .message-attachment img {
            max-width: 320px;
            max-height: 240px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-subtle);
            cursor: pointer;
        }

        .message-attachment img:hover {
            border-color: var(--accent);
        }

        .message-attachment-file {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--bg-elevated);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            padding: 6px 10px;
            font-size: 13px;
            color: var(--text-secondary);
        }

        .doc-badge {
            display: inline-block;
            background: var(--accent);
            color: #fff;
            font-size: 10px;
            font-weight: 600;
            padding: 1px 5px;
            border-radius: 3px;
            letter-spacing: 0.5px;
        }

        /* Clear Chat Button */
        .clear-btn {
            position: fixed;
            bottom: 80px;
            right: 16px;
            padding: 8px 12px;
            background: var(--bg-tertiary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            color: var(--text-tertiary);
            font-size: 12px;
            cursor: pointer;
            transition: var(--transition);
            display: none;
            align-items: center;
            gap: 6px;
            z-index: 10;
        }

        .clear-btn.visible {
            display: flex;
        }

        .clear-btn:hover {
            border-color: #e74c3c;
            color: #e74c3c;
        }

        /* Modal */
        .modal-overlay {
            position: fixed;
            inset: 0;
            background: rgba(0,0,0,0.85);
            backdrop-filter: blur(8px);
            -webkit-backdrop-filter: blur(8px);
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
            z-index: 100;
            opacity: 0;
            visibility: hidden;
            transition: var(--transition);
        }

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

        .modal {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px;
            max-width: 400px;
            width: 100%;
            transform: scale(0.95);
            transition: transform var(--transition);
        }

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

        .modal-title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 12px;
        }

        .modal-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .modal-agents {
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-bottom: 20px;
        }

        .modal-agent {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 12px;
            background: var(--bg-tertiary);
            border-radius: var(--radius-sm);
        }

        .modal-agent-icon {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            color: white;
            flex-shrink: 0;
        }

        .modal-agent-icon.advisor { background: var(--advisor-color); }
        .modal-agent-icon.coach { background: var(--coach-color); }
        .modal-agent-icon.architect { background: var(--architect-color); }
        .modal-agent-icon.problem_solver { background: var(--problem-solver-color); }
        .modal-agent-icon.compliance { background: var(--compliance-color); }
        .modal-agent-icon.parallel { background: var(--parallel-color); }

        .modal-agent-info h4 {
            font-size: 13px;
            font-weight: 600;
        }

        .modal-agent-info p {
            font-size: 11px;
            color: var(--text-tertiary);
            margin-top: 2px;
        }

        .modal-close {
            width: 100%;
            padding: 12px;
            background: var(--accent);
            border: none;
            border-radius: var(--radius-md);
            color: white;
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            transition: var(--transition);
        }

        .modal-close:hover {
            filter: brightness(1.1);
        }

        /* Desktop adjustments */
        @media (min-width: 640px) {
            .header {
                padding: 16px 24px;
            }

            .agent-bar {
                padding: 10px 24px;
            }

            .messages {
                padding: 24px;
                max-width: 800px;
                margin: 0 auto;
                width: 100%;
            }

            .message {
                max-width: 75%;
            }

            .input-area {
                padding: 16px 24px;
            }

            .input-wrapper {
                max-width: 800px;
                margin: 0 auto;
            }

            .welcome {
                padding: 48px 24px;
            }

            .welcome-prompts {
                max-width: 440px;
            }

            .clear-btn {
                bottom: 100px;
                right: 24px;
            }
        }

        /* ============================================
           MOBILE RESPONSIVE ENHANCEMENTS
           ============================================ */

        @media (max-width: 639px) {
            /* Header - more compact */
            .header {
                padding: 10px 12px;
            }

            .header-avatar {
                width: 36px;
                height: 36px;
            }

            .header-title {
                font-size: 15px;
            }

            .header-subtitle {
                display: none;
            }

            .header-btn {
                width: 40px;
                height: 40px;
            }

            /* User menu - compact on mobile */
            .user-info {
                display: none;
            }

            .user-menu-trigger {
                padding: 6px;
            }

            .user-avatar {
                width: 28px;
                height: 28px;
            }

            /* Agent bar */
            .agent-bar {
                padding: 6px 12px;
            }

            /* Messages - better spacing on mobile */
            .messages {
                padding: 12px;
                gap: 12px;
            }

            .message {
                max-width: 88%;
            }

            .message-bubble {
                padding: 10px 14px;
                border-radius: 14px;
            }

            .message-header {
                margin-bottom: 8px;
                padding-bottom: 8px;
            }

            .message-content {
                font-size: 15px;
            }

            /* Feedback buttons - larger touch targets */
            .message-feedback {
                margin-top: 8px;
                padding-top: 8px;
            }

            .feedback-btn {
                min-width: 44px;
                min-height: 44px;
                padding: 10px 14px;
                font-size: 13px;
            }

            /* Input area */
            .input-area {
                padding: 10px 12px;
            }

            .input-wrapper {
                padding: 4px 4px 4px 12px;
            }

            .input-field {
                font-size: 16px; /* Prevents iOS zoom */
                padding: 10px 0;
            }

            .send-btn {
                width: 44px;
                height: 44px;
                border-radius: 50%;
            }

            /* Welcome screen */
            .welcome {
                padding: 24px 16px;
            }

            .welcome-avatar {
                width: 64px;
                height: 64px;
            }

            .welcome-title {
                font-size: 20px;
            }

            .welcome-desc {
                font-size: 14px;
                margin-bottom: 24px;
            }

            .welcome-prompt {
                padding: 14px 16px;
                min-height: 44px;
            }

            /* Clear button */
            .clear-btn {
                bottom: 70px;
                right: 12px;
                padding: 10px 14px;
            }

            /* Modal - slide up from bottom on mobile */
            .modal-overlay {
                align-items: flex-end;
                padding: 0;
            }

            .modal {
                max-width: 100%;
                width: 100%;
                border-radius: 20px 20px 0 0;
                padding: 20px;
                max-height: 85vh;
                overflow-y: auto;
            }

            .modal-agent {
                padding: 12px;
            }

            .modal-close {
                min-height: 50px;
            }

            /* Welcome modal */
            .welcome-modal-content {
                border-radius: 20px 20px 0 0;
                padding: 24px 20px;
                max-height: 90vh;
                overflow-y: auto;
            }

            .welcome-modal-avatar {
                width: 64px;
                height: 64px;
            }

            .welcome-modal h2 {
                font-size: 20px;
            }

            .welcome-modal-btn {
                min-height: 50px;
            }

            /* Toast notifications */
            .toast-container {
                top: auto;
                bottom: 80px;
                right: 12px;
                left: 12px;
            }

            .toast {
                min-width: auto;
                max-width: 100%;
            }
        }

        /* Extra small screens */
        @media (max-width: 375px) {
            .message {
                max-width: 92%;
            }

            .welcome-title {
                font-size: 18px;
            }

            .welcome-prompt {
                font-size: 13px;
            }
        }

        /* Landscape phone */
        @media (max-height: 500px) and (orientation: landscape) {
            .welcome {
                padding: 16px;
            }

            .welcome-avatar {
                width: 48px;
                height: 48px;
                margin-bottom: 12px;
            }

            .welcome-title {
                font-size: 18px;
                margin-bottom: 4px;
            }

            .welcome-desc {
                margin-bottom: 16px;
            }

            .welcome-prompts {
                flex-direction: row;
                flex-wrap: wrap;
            }

            .welcome-prompt {
                flex: 1 1 45%;
            }
        }

        /* Touch feedback */
        button:active,
        .btn:active,
        .welcome-prompt:active,
        .feedback-btn:active {
            transform: scale(0.97);
            opacity: 0.9;
        }

        /* Focus states for accessibility */
        button:focus-visible,
        a:focus-visible,
        input:focus-visible,
        textarea:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }

        /* Prevent text selection on buttons */
        button, .btn, .welcome-prompt {
            user-select: none;
            -webkit-user-select: none;
        }

        /* Welcome Modal */
        .welcome-modal {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.85);
            display: none;
            align-items: center;
            justify-content: center;
            z-index: 10000;
            padding: 20px;
            backdrop-filter: blur(8px);
        }

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

        .welcome-modal-content {
            background: var(--bg-secondary);
            border: 1px solid var(--border-light);
            border-radius: var(--radius-lg);
            max-width: 500px;
            width: 100%;
            padding: 32px;
            position: relative;
            animation: slideUp 0.3s ease;
        }

        @keyframes slideUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .welcome-modal-header {
            text-align: center;
            margin-bottom: 24px;
        }

        .welcome-modal-avatar {
            width: 80px;
            height: 80px;
            border-radius: 50%;
            overflow: hidden;
            margin: 0 auto 16px;
            border: 2px solid var(--border-light);
        }

        .welcome-modal-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .welcome-modal h2 {
            font-size: 24px;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .welcome-modal p {
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 16px;
        }

        .welcome-features {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-bottom: 24px;
        }

        .welcome-feature {
            display: flex;
            align-items: start;
            gap: 12px;
            padding: 12px;
            background: var(--bg-tertiary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
        }

        .welcome-feature-icon {
            font-size: 20px;
            flex-shrink: 0;
        }

        .welcome-feature-text {
            flex: 1;
        }

        .welcome-feature-title {
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 2px;
        }

        .welcome-feature-desc {
            font-size: 13px;
            color: var(--text-secondary);
        }

        .welcome-modal-actions {
            display: flex;
            gap: 12px;
        }

        .welcome-modal-btn {
            flex: 1;
            padding: 12px 20px;
            border-radius: var(--radius-md);
            border: none;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }

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

        .welcome-modal-btn-primary:hover {
            opacity: 0.9;
            transform: translateY(-1px);
        }

        .welcome-modal-btn-secondary {
            background: var(--bg-tertiary);
            color: var(--text-primary);
        }

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