* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        :root {
            --primary: #FF6B35;
            --primary-dark: #E55A2B;
            --secondary: #2D3047;
            --accent: #00A8E8;
            --success: #10B981;
            --warning: #F59E0B;
            --danger: #EF4444;
            --bg: #ffffff;
            --bg-secondary: #F8FAFC;
            --bg-tertiary: #F1F5F9;
            --border: #E5E7EB;
            --border-light: #F1F5F9;
            --text: #1F2937;
            --text-light: #6B7280;
            --text-lighter: #9CA3AF;
            --shadow: 0 1px 3px rgba(0,0,0,0.1);
            --shadow-md: 0 4px 6px rgba(0,0,0,0.05);
            --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
            --radius: 12px;
            --radius-sm: 8px;
            --radius-lg: 16px;
        }

        #verificationModal {
            display: none !important;
        }
        #verificationModal[style*="display: flex"] {
            display: flex !important;
        }
        
        body, html {
            height: 100%;
            background: linear-gradient(135deg, #F8FAFC 0%, #F1F5F9 100%);
            color: var(--text);
            line-height: 1.6;
            overflow-x: hidden;
            transition: background 0.3s ease;
        }

        /* DESKTOP LAYOUT */
        @media (min-width: 1201px) {
            .app-container {
                display: flex;
                width: 100%;
                max-width: 1800px;
                margin: 0 auto;
                min-height: 100vh;
                background: var(--bg);
                box-shadow: var(--shadow-lg);
                border-radius: var(--radius-lg);
                overflow: hidden;
            }

            .sidebar {
                width: 340px;
                background: var(--secondary);
                display: flex;
                flex-direction: column;
                color: white;
                overflow-y: auto;
                border-right: 1px solid rgba(255,255,255,0.1);
                height: 100vh;
                position: sticky;
                padding-bottom: 100px;
                top: 0;
            }

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

            .mobile-header {
                display: none !important;
            }

            .sidebar-close {
                display: none !important;
            }
        }

        /* MOBILE LAYOUT */
        @media (max-width: 1200px) {
            .app-container {
                display: flex;
                flex-direction: column;
                min-height: 100vh;
                height: 100vh;
            }

            .mobile-header {
                display: flex;
                padding: 16px 20px;
                background: var(--secondary);
                color: white;
                align-items: center;
                justify-content: space-between;
                position: fixed;
                top: 0;
                left: 0;
                right: 0;
                z-index: 1000;
                height: 60px;
            }

            .mobile-header h1 {
                font-size: 18px;
                display: flex;
                align-items: center;
                gap: 10px;
            }

            .mobile-menu-btn {
                background: none;
                border: none;
                color: white;
                font-size: 20px;
                cursor: pointer;
                padding: 8px;
                border-radius: var(--radius-sm);
            }

            .mobile-menu-btn:hover {
                background: rgba(255,255,255,0.1);
            }

            .sidebar {
                position: fixed;
                top: 0;
                left: 0;
                width: 100%;
                height: 100vh;
                background: var(--secondary);
                z-index: 1001;
                transform: translateX(-100%);
                transition: transform 0.25s ease;
                overflow-y: auto;
                display: flex;
                flex-direction: column;
            }

            .sidebar.mobile-visible {
                transform: translateX(0);
            }

            .sidebar-close {
                display: block;
                position: absolute;
                top: 20px;
                right: 20px;
                background: none;
                border: none;
                color: white;
                font-size: 20px;
                cursor: pointer;
                width: 40px;
                height: 40px;
                border-radius: 50%;
                display: flex;
                align-items: center;
                justify-content: center;
            }

            .sidebar-close:hover {
                background: rgba(255,255,255,0.1);
            }

            .main-content {
                flex: 1;
                display: flex;
                flex-direction: column;
                margin-top: 60px;
                height: calc(100vh - 60px);
            }
            
            /* Mobile input container - SINGLE LINE */
            .input-container {
                position: fixed;
                left: 0;
                right: 0;
                bottom: 0;
                padding: 12px 16px;
                z-index: 2000;
                background: rgba(255,255,255,0.98);
                box-shadow: 0 -4px 20px rgba(0,0,0,0.08);
                border-top: 1px solid var(--border);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                border-radius: 0;
                min-height: 64px;
            }
            
            .input-wrapper {
                gap: 12px;
                align-items: center;
            }
            
            #userInput {
                padding: 12px 16px;
                padding-right: 60px;
                min-height: 40px;
                max-height: 40px;
                line-height: 1.4;
                font-size: 14px;
                overflow: hidden;
                text-overflow: ellipsis;
                white-space: nowrap;
            }
            
            #userInput:focus {
                white-space: nowrap;
                overflow: hidden;
                text-overflow: ellipsis;
            }
            
            .send-button {
                width: 44px;
                height: 44px;
                font-size: 16px;
            }
            
            .input-hint {
                right: 16px;
                font-size: 11px;
                padding: 2px 8px;
                display: none;
            }
            .mobile-header h1 a {
    color: inherit;
    text-decoration: none;
}

.mobile-header h1 a:hover,
.mobile-header h1 a:focus,
.mobile-header h1 a:active {
    color: inherit;
    text-decoration: none;
}
        }

        /* COMMON STYLES */
        .logo {
            padding: 28px 24px;
            text-align: center;
            border-bottom: 1px solid rgba(255,255,255,0.1);
            background: var(--secondary);
            position: sticky;
            top: 0;
            z-index: 30;
        }

        .logo h1 {
            font-size: 22px;
            font-weight: 700;
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            margin-bottom: 6px;
        }

        .logo .tagline {
            font-size: 12px;
            opacity: 0.8;
            margin-top: 4px;
            color: rgba(255,255,255,0.7);
            letter-spacing: 0.5px;
        }

        /* User Info */
        .user-info {
            padding: 20px;
            background: rgba(255,255,255,0.08);
            margin: 16px;
            border-radius: var(--radius);
            text-align: center;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255,255,255,0.1);
            display: none;
            flex-direction: column;
            gap: 12px;
        }

        .user-info.active {
            display: flex;
        }

        .user-avatar {
            width: 60px;
            height: 60px;
            border-radius: 50%;
            background: var(--primary);
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: bold;
        }

        .user-name {
            font-size: 16px;
            font-weight: 600;
            color: white;
            margin: 0;
        }

        /* Stats moved to main chat area */
        .stats-section {
            display: none;
        }

        /* Chat History Section */
        .chat-history {
            padding: 0 24px;
            height: 200px;
            min-height: 200px;
            max-height: 250px;
            overflow-y: auto;
            display: none;
            margin-bottom: 16px;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .chat-history.active {
            display: block;
        }

        .chat-history h3 {
            font-size: 13px;
            text-transform: uppercase;
            opacity: 0.7;
            margin-bottom: 16px;
            font-weight: 600;
            letter-spacing: 1px;
            position: sticky;
            top: 0;
            background: var(--secondary);
            padding: 20px 0 16px 0;
            z-index: 25;
            color: rgba(255,255,255,0.8);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 10px;
        }

        .history-actions {
            display: flex;
            gap: 8px;
        }

        .history-btn {
            background: rgba(255,255,255,0.1);
            border: 1px solid rgba(255,255,255,0.2);
            color: white;
            padding: 4px 12px;
            border-radius: 4px;
            font-size: 12px;
            cursor: pointer;
            transition: all 0.2s ease;
        }

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

        .history-list {
            display: flex;
            flex-direction: column;
            gap: 8px;
            margin-bottom: 20px;
        }

        .history-item {
            background: rgba(255,255,255,0.05);
            border: 1px solid rgba(255,255,255,0.1);
            border-radius: var(--radius-sm);
            padding: 12px;
            cursor: pointer;
            transition: all 0.2s ease;
            position: relative;
        }

        .history-item:hover {
            background: rgba(255,255,255,0.1);
            transform: translateX(4px);
            border-color: var(--primary);
        }

        .history-item.active {
            background: var(--primary);
            border-color: var(--primary);
        }

        .history-item-header {
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            margin-bottom: 8px;
        }

        .history-restaurant {
            font-size: 12px;
            background: rgba(255,255,255,0.1);
            padding: 2px 8px;
            border-radius: 10px;
            color: var(--warning);
        }

        .history-date {
            font-size: 11px;
            opacity: 0.7;
        }

        .history-preview {
            font-size: 13px;
            color: rgba(255,255,255,0.9);
            overflow: hidden;
            text-overflow: ellipsis;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }

        .no-history {
            text-align: center;
            padding: 40px 20px;
            opacity: 0.7;
            font-size: 14px;
        }

        .no-history i {
            font-size: 24px;
            margin-bottom: 10px;
            display: block;
        }

        /* Goal Selector */
        .goal-selector {
            padding: 20px 24px;
            padding-bottom: 16px;
        }

        .goal-selector h3 {
            font-size: 13px;
            text-transform: uppercase;
            opacity: 0.7;
            margin-bottom: 16px;
            font-weight: 600;
            letter-spacing: 1px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: rgba(255,255,255,0.8);
        }

        .goal-buttons {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px;
        }

        @media (max-width: 768px) {
            .goal-buttons {
                grid-template-columns: 1fr;
            }
        }

        .goal-btn {
            padding: 16px 12px;
            border: none;
            background: rgba(255,255,255,0.08);
            border-radius: var(--radius-sm);
            color: white;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            cursor: pointer;
            transition: all 0.2s ease;
            font-weight: 500;
            text-align: center;
            min-height: 84px;
            justify-content: center;
            border: 1px solid rgba(255,255,255,0.1);
        }

        .goal-btn:hover {
            background: rgba(255,255,255,0.15);
            transform: translateY(-2px);
            border-color: rgba(255,255,255,0.2);
        }

        .goal-btn.active {
            background: var(--primary);
            border-color: var(--primary);
            box-shadow: 0 6px 20px rgba(255,107,53,0.3);
            transform: translateY(-2px);
        }

        .goal-btn i {
            font-size: 22px;
            margin-bottom: 4px;
        }

        .goal-btn span {
            font-size: 12px;
            font-weight: 500;
            line-height: 1.3;
        }

        /* Quick Queries */
        .quick-queries {
            padding: 0 24px 24px 24px;
            flex: 1;
            min-height: 180px;
            max-height: 250px;
            overflow-y: auto;
        }

        .quick-queries h3 {
            font-size: 13px;
            text-transform: uppercase;
            opacity: 0.7;
            margin-bottom: 16px;
            font-weight: 600;
            letter-spacing: 1px;
            position: sticky;
            top: 0;
            background: var(--secondary);
            padding: 20px 0 16px 0;
            z-index: 25;
            color: rgba(255,255,255,0.8);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .query-buttons {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .query-btn {
            width: 100%;
            padding: 16px;
            border: 1px solid rgba(255,255,255,0.1);
            background: rgba(255,255,255,0.05);
            border-radius: var(--radius-sm);
            color: white;
            text-align: left;
            cursor: pointer;
            transition: all 0.2s ease;
            font-size: 13.5px;
            display: flex;
            align-items: center;
            gap: 14px;
            line-height: 1.4;
        }

        .query-btn:hover {
            background: var(--primary);
            border-color: var(--primary);
            transform: translateX(4px);
            box-shadow: 0 4px 12px rgba(255,107,53,0.2);
        }

        .query-btn i {
            font-size: 16px;
            flex-shrink: 0;
            width: 20px;
            text-align: center;
        }

        /* Main Content - Stats Section */
        .stats-panel {
            display: flex;
            justify-content: space-around;
            padding: 20px 32px;
            background: white;
            border-bottom: 1px solid var(--border);
            gap: 20px;
            flex-wrap: wrap;
        }

        @media (max-width: 768px) {
            .stats-panel {
                padding: 16px 20px;
                gap: 12px;
            }
        }

        .stat-card {
            flex: 1;
            min-width: 150px;
            text-align: center;
            padding: 16px;
            background: var(--bg-secondary);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
        }

        .stat-icon {
            font-size: 24px;
            color: var(--primary);
            margin-bottom: 8px;
        }

        .stat-number {
            font-size: 20px;
            font-weight: 700;
            color: var(--secondary);
            margin-bottom: 4px;
        }

        .stat-label {
            font-size: 12px;
            color: var(--text-light);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        /* Chat Header */
        .chat-header {
            padding: 22px 32px;
            border-bottom: 1px solid var(--border);
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: var(--bg);
            position: sticky;
            top: 0;
            z-index: 100;
            backdrop-filter: blur(10px);
            background: rgba(255,255,255,0.95);
        }

        @media (max-width: 1200px) {
            .chat-header {
                padding: 16px 20px;
            }
        }

        .chat-header h2 {
            font-size: 20px;
            font-weight: 700;
            color: var(--secondary);
            display: flex;
            align-items: center;
            gap: 12px;
        }

        @media (max-width: 768px) {
            .chat-header h2 {
                font-size: 18px;
            }
        }

        .user-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .auth-btn {
            padding: 8px 16px;
            border-radius: 20px;
            border: 1px solid var(--primary);
            background: white;
            color: var(--primary);
            font-weight: 600;
            font-size: 13px;
            cursor: pointer;
            transition: all 0.2s ease;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .auth-btn:hover {
            background: var(--primary);
            color: white;
            transform: translateY(-1px);
        }

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

        .auth-btn.login:hover {
            background: var(--primary-dark);
        }

        /* Logout button style */
        .logout-btn {
            padding: 8px 16px;
            border-radius: 20px;
            border: 1px solid var(--danger);
            background: white;
            color: var(--danger);
            font-weight: 600;
            font-size: 13px;
            cursor: pointer;
            transition: all 0.2s ease;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .logout-btn:hover {
            background: var(--danger);
            color: white;
            transform: translateY(-1px);
        }

        .status {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--text-light);
            background: var(--bg-secondary);
            padding: 6px 12px;
            border-radius: 20px;
        }

        .status-dot {
            width: 8px;
            height: 8px;
            background: var(--success);
            border-radius: 50%;
            animation: pulse 2s infinite;
        }

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

        /* Usage Warning */
        .usage-warning {
            background: linear-gradient(135deg, #FFF8E1 0%, #FFECB3 100%);
            border-left: 4px solid var(--warning);
            padding: 16px 24px;
            margin: 0 32px;
            margin-top: 16px;
            border-radius: var(--radius-sm);
            display: none;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            animation: slideDown 0.3s ease;
        }

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

        .usage-warning.active {
            display: flex;
        }

        @media (max-width: 1200px) {
            .usage-warning {
                margin: 0 20px;
                margin-top: 16px;
                flex-direction: column;
                align-items: stretch;
                text-align: center;
            }
        }

        .usage-warning i {
            color: var(--warning);
            font-size: 20px;
            flex-shrink: 0;
        }

        .warning-content {
            flex: 1;
        }

        .warning-content strong {
            color: var(--secondary);
            display: block;
            margin-bottom: 4px;
        }

        .warning-content span {
            color: var(--text-light);
            font-size: 14px;
        }

        .warning-action {
            background: var(--primary);
            color: white;
            border: none;
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 14px;
            cursor: pointer;
            transition: all 0.2s ease;
            white-space: nowrap;
        }

        .warning-action:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }

        /* Messages Container */
        .messages-container {
            flex: 1;
            overflow-y: auto;
            padding: 32px;
            background: var(--bg-secondary);
            position: relative;
            scroll-behavior: smooth;
            height: calc(100vh - 180px);
        }
        
        @media (max-width: 1200px) {
            .messages-container {
                padding: 24px 20px;
                height: calc(100vh - 60px - 140px - 120px);
            }
        }

        @media (min-width: 1201px) {
            .messages-container {
                padding-bottom: 120px;
            }
        }

        .message {
            max-width: 100%;
            margin-bottom: 24px;
            animation: fadeIn 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(10px); }
            to { opacity: 1; transform: translateY(0); }
        }

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

        .user-bubble {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: white;
            padding: 16px 22px;
            border-radius: 20px;
            border-bottom-right-radius: 6px;
            line-height: 1.5;
            box-shadow: var(--shadow-md);
            max-width: 85%;
            word-wrap: break-word;
            font-size: 15px;
            border: none;
            position: relative;
        }

        @media (max-width: 768px) {
            .user-bubble {
                max-width: 95%;
            }
        }

        .user-bubble:after {
            content: '';
            position: absolute;
            bottom: 0;
            right: -6px;
            width: 12px;
            height: 12px;
            background: var(--primary-dark);
            border-radius: 0 0 0 12px;
        }

        .ai-message {
            align-items: flex-start;
        }

        .ai-bubble {
            background: white;
            color: var(--text);
            padding: 0;
            border-radius: 20px;
            border-bottom-left-radius: 6px;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
            max-width: 90%;
            word-wrap: break-word;
            font-size: 15px;
            overflow: hidden;
            position: relative;
            margin-top: 8px;
        }

        @media (max-width: 768px) {
            .ai-bubble {
                max-width: 95%;
            }
        }

        .ai-bubble:before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
        }

        .ai-bubble-content {
            padding: 28px 32px;
        }

        @media (max-width: 1200px) {
            .ai-bubble-content {
                padding: 24px 20px;
            }
        }

        .ai-bubble h1 {
            font-size: 28px;
            font-weight: 800;
            color: var(--secondary);
            margin: 0 0 16px 0;
            line-height: 1.3;
            padding-bottom: 16px;
            border-bottom: 2px solid var(--border-light);
        }

        @media (max-width: 768px) {
            .ai-bubble h1 {
                font-size: 24px;
            }
        }

        .ai-bubble h2 {
            font-size: 22px;
            font-weight: 700;
            color: var(--secondary);
            margin: 28px 0 18px 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        @media (max-width: 768px) {
            .ai-bubble h2 {
                font-size: 20px;
            }
        }

        .ai-bubble h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--secondary);
            margin: 24px 0 16px 0;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        @media (max-width: 768px) {
            .ai-bubble h3 {
                font-size: 17px;
            }
        }

        .ai-bubble h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin: 20px 0 12px 0;
            opacity: 0.9;
        }

        .ai-bubble p {
            margin: 16px 0;
            line-height: 1.7;
            color: var(--text);
        }

        .ai-bubble strong {
            color: var(--secondary);
            font-weight: 600;
        }

        .ai-bubble em {
            color: var(--text-light);
            font-style: italic;
        }

        /* RESPONSIVE TABLES */
        .table-container {
            width: 100%;
            overflow-x: auto;
            margin: 24px 0;
            border-radius: var(--radius);
        }

        .table-container table {
            min-width: 600px;
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            background: white;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--border);
            font-size: 14px;
        }

        @media (max-width: 768px) {
            .table-container {
                border: 1px solid var(--border);
                border-radius: var(--radius);
                background: white;
            }
            
            .table-container table {
                margin: 0;
                border: none;
                box-shadow: none;
                min-width: 700px;
            }
        }

        @media (max-width: 480px) {
            .table-container table {
                min-width: 800px;
            }
        }

        .table-container table thead {
            background: linear-gradient(135deg, var(--secondary) 0%, #1a1c2b 100%);
        }

        .table-container table th {
            color: white;
            padding: 16px 20px;
            text-align: left;
            font-weight: 600;
            font-size: 14px;
            border-bottom: 2px solid var(--primary);
            white-space: nowrap;
        }

        .table-container table td {
            padding: 14px 20px;
            border-bottom: 1px solid var(--border-light);
            vertical-align: middle;
            color: var(--text);
            white-space: nowrap;
        }

        @media (max-width: 480px) {
            .table-container table th,
            .table-container table td {
                padding: 10px 12px;
                font-size: 13px;
            }
        }

        .table-container table tbody tr {
            transition: background-color 0.2s ease;
        }

        .table-container table tbody tr:hover {
            background-color: var(--bg-tertiary);
        }

        .table-container table tbody tr:nth-child(even) {
            background-color: var(--bg-secondary);
        }

        .table-container table tbody tr:nth-child(even):hover {
            background-color: var(--bg-tertiary);
        }

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

        .ai-bubble ul, .ai-bubble ol {
            margin: 16px 0 16px 24px;
            padding-left: 8px;
        }

        .ai-bubble li {
            margin: 10px 0;
            line-height: 1.6;
            color: var(--text);
        }

        .ai-bubble code {
            background: var(--bg-secondary);
            padding: 3px 8px;
            border-radius: 6px;
            font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Fira Code', monospace;
            font-size: 0.9em;
            color: var(--primary-dark);
            border: 1px solid var(--border);
        }

        .ai-bubble blockquote {
            border-left: 4px solid var(--primary);
            padding-left: 20px;
            margin: 20px 0;
            color: var(--text-light);
            font-style: italic;
            background: var(--bg-secondary);
            padding: 16px 20px;
            border-radius: 0 var(--radius) var(--radius) 0;
        }

        .ai-bubble hr {
            border: none;
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border), transparent);
            margin: 32px 0;
        }

        /* Input Container */
        .input-container {
            padding: 24px 32px;
            border-top: 1px solid var(--border);
            background: white;
            position: sticky;
            bottom: 0;
            z-index: 100;
            backdrop-filter: blur(10px);
            background: rgba(255,255,255,0.98);
            box-shadow: 0 -2px 10px rgba(0,0,0,0.05);
            border-bottom-left-radius: var(--radius-lg);
            border-bottom-right-radius: var(--radius-lg);
        }

        .input-wrapper {
            display: flex;
            gap: 16px;
            align-items: flex-end;
        }

        .input-area {
            flex: 1;
            position: relative;
        }

        #userInput {
            width: 100%;
            padding: 18px 24px;
            padding-right: 140px;
            border: 2px solid var(--border);
            border-radius: var(--radius);
            font-size: 15px;
            line-height: 1.6;
            resize: none;
            min-height: 56px;
            max-height: 200px;
            outline: none;
            transition: all 0.2s ease;
            background: white;
            color: var(--text);
            font-family: inherit;
        }

        #userInput:disabled {
            background: var(--bg-secondary);
            cursor: not-allowed;
        }

        #userInput:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 4px rgba(255,107,53,0.1);
            background: white;
        }

        .input-hint {
            position: absolute;
            right: 24px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-lighter);
            font-size: 12px;
            display: flex;
            align-items: center;
            gap: 8px;
            pointer-events: none;
            background: rgba(255,255,255,0.9);
            padding: 4px 10px;
            border-radius: 12px;
            border: 1px solid var(--border-light);
        }

        .send-button {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: white;
            border: none;
            width: 56px;
            height: 56px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.2s ease;
            flex-shrink: 0;
            font-size: 18px;
        }

        .send-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255,107,53,0.3);
        }

        .send-button:active {
            transform: translateY(0);
        }

        .send-button:disabled {
            background: var(--text-lighter);
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }

        /* Name Modal for Google Users */
        .name-modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.7);
            display: none;
            align-items: center;
            justify-content: center;
            z-index: 3000;
            padding: 20px;
            backdrop-filter: blur(5px);
        }

        .name-modal-overlay.active {
            display: flex;
            animation: fadeIn 0.3s ease;
        }

        .name-modal {
            background: white;
            border-radius: var(--radius-lg);
            width: 100%;
            max-width: 400px;
            max-height: 90vh;
            overflow-y: auto;
            box-shadow: var(--shadow-lg);
            animation: modalSlideUp 0.4s ease;
        }

        .name-modal-header {
            padding: 28px 32px;
            border-bottom: 1px solid var(--border);
            text-align: center;
        }

        .name-modal-header h2 {
            color: var(--secondary);
            font-size: 22px;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
        }

        .name-modal-header p {
            color: var(--text-light);
            font-size: 15px;
        }

        .name-modal-content {
            padding: 32px;
        }

        @media (max-width: 480px) {
            .name-modal-content {
                padding: 24px 20px;
            }
        }

        /* Login Modal */
        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0,0,0,0.7);
            display: none;
            align-items: center;
            justify-content: center;
            z-index: 2000;
            padding: 20px;
            backdrop-filter: blur(5px);
        }

        .modal-overlay.active {
            display: flex;
            animation: fadeIn 0.3s ease;
        }

        .modal {
            background: white;
            border-radius: var(--radius-lg);
            width: 100%;
            max-width: 480px;
            max-height: 90vh;
            overflow-y: auto;
            box-shadow: var(--shadow-lg);
            animation: modalSlideUp 0.4s ease;
        }

        @keyframes modalSlideUp {
            from { opacity: 0; transform: translateY(40px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .modal-header {
            padding: 28px 32px;
            border-bottom: 1px solid var(--border);
            text-align: center;
        }

        .modal-header h2 {
            color: var(--secondary);
            font-size: 24px;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
        }

        .modal-header p {
            color: var(--text-light);
            font-size: 15px;
        }

        .modal-content {
            padding: 32px;
        }

        @media (max-width: 480px) {
            .modal-content {
                padding: 24px 20px;
            }
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            color: var(--secondary);
            font-weight: 600;
            font-size: 14px;
        }

        .form-control {
            width: 100%;
            padding: 14px 16px;
            border: 2px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 15px;
            transition: all 0.2s ease;
        }

        .form-control:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(255,107,53,0.1);
        }

        .form-error {
            color: var(--danger);
            font-size: 13px;
            margin-top: 6px;
            display: none;
        }

        .form-error.active {
            display: block;
        }

        .modal-buttons {
            display: flex;
            flex-direction: column;
            gap: 16px;
            margin-top: 24px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            color: white;
            border: none;
            padding: 16px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: all 0.2s ease;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255,107,53,0.3);
        }

        .btn-secondary {
            background: white;
            color: var(--secondary);
            border: 2px solid var(--border);
            padding: 16px;
            border-radius: var(--radius-sm);
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: all 0.2s ease;
        }

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

        .modal-footer {
            padding: 20px 32px;
            border-top: 1px solid var(--border);
            text-align: center;
            color: var(--text-light);
            font-size: 14px;
        }

        .modal-footer a {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            cursor: pointer;
        }

        .modal-footer a:hover {
            text-decoration: underline;
        }

        .modal-close {
            position: absolute;
            top: 20px;
            right: 20px;
            background: none;
            border: none;
            font-size: 20px;
            color: var(--text-light);
            cursor: pointer;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
        }

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

        /* Typing Indicator */
        .typing-indicator {
            display: flex;
            gap: 8px;
            padding: 20px 28px;
            background: white;
            border-radius: var(--radius);
            width: fit-content;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-md);
            margin: 16px 0;
        }

        .typing-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            animation: typing 1.4s infinite ease-in-out;
        }

        .typing-dot:nth-child(1) { animation-delay: -0.32s; }
        .typing-dot:nth-child(2) { animation-delay: -0.16s; }

        @keyframes typing {
            0%, 80%, 100% { transform: scale(0.9); opacity: 0.5; }
            40% { transform: scale(1); opacity: 1; }
        }

        /* Scrollbar Styling */
        .sidebar::-webkit-scrollbar,
        .messages-container::-webkit-scrollbar,
        .chat-history::-webkit-scrollbar,
        .quick-queries::-webkit-scrollbar {
            width: 6px;
        }

        .sidebar::-webkit-scrollbar-track,
        .chat-history::-webkit-scrollbar-track,
        .quick-queries::-webkit-scrollbar-track {
            background: rgba(255,255,255,0.1);
            border-radius: 4px;
        }

        .sidebar::-webkit-scrollbar-thumb,
        .chat-history::-webkit-scrollbar-thumb,
        .quick-queries::-webkit-scrollbar-thumb {
            background: var(--primary);
            border-radius: 4px;
            border: 2px solid var(--secondary);
        }

        .sidebar::-webkit-scrollbar-thumb:hover,
        .chat-history::-webkit-scrollbar-thumb:hover,
        .quick-queries::-webkit-scrollbar-thumb:hover {
            background: var(--primary-dark);
        }

        .messages-container::-webkit-scrollbar-track {
            background: var(--bg-secondary);
            border-radius: 4px;
        }

        .messages-container::-webkit-scrollbar-thumb {
            background: var(--primary);
            border-radius: 4px;
            border: 2px solid var(--bg-secondary);
        }

        .messages-container::-webkit-scrollbar-thumb:hover {
            background: var(--primary-dark);
        }

        /* Loading Animation */
        .loading {
            display: inline-block;
            width: 20px;
            height: 20px;
            border: 3px solid var(--border);
            border-radius: 50%;
            border-top-color: var(--primary);
            animation: spin 1s ease-in-out infinite;
            margin-right: 8px;
        }
/* MOBILE LAYOUT */
        @keyframes spin {
            to { transform: rotate(360deg); }
        }

        /* Notification */
        .notification {
            position: fixed;
            bottom: 24px;
            right: 24px;
            background: white;
            padding: 16px 24px;
            border-radius: var(--radius);
            box-shadow: var(--shadow-lg);
            border-left: 4px solid var(--primary);
            transform: translateY(100px);
            opacity: 0;
            transition: all 0.3s ease;
            z-index: 1000;
            max-width: 400px;
        }

        .notification.show {
            transform: translateY(0);
            opacity: 1;
        }

        /* Scroll to Bottom Button */
        .scroll-to-bottom {
            position: fixed;
            bottom: 120px;
            right: 30px;
            width: 40px;
            height: 40px;
            background: var(--primary);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: var(--shadow-lg);
            z-index: 99;
            opacity: 0;
            transform: translateY(20px);
            transition: all 0.3s ease;
            border: none;
        }

        .scroll-to-bottom.visible {
            opacity: 1;
            transform: translateY(0);
        }

        .scroll-to-bottom:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
        }

        @media (max-width: 768px) {
            .scroll-to-bottom {
                bottom: 100px;
                right: 20px;
                width: 36px;
                height: 36px;
            }
        }

        /* Mobile message padding fix */
        @media (max-width: 1200px) {
            .messages-container {
                padding-bottom: 150px;
            }
        }
        
        /* Add this temporarily to debug */
        #sendButton {
            pointer-events: auto !important;
            cursor: pointer !important;
            opacity: 1 !important;
            background: #FF6B35 !important;
        }

        /* Make sure nothing is covering it */
        #sendButton:after {
            display: none !important;
        }

        /* Highlight the button when hovered */
        #sendButton:hover {
            transform: translateY(-2px) !important;
            box-shadow: 0 8px 20px rgba(255,107,53,0.3) !important;
            background: #E55A2B !important;
        }
        
        /* New Chat Section */
        .new-chat-section {
            padding: 0 24px;
            margin-bottom: 16px;
            width: 100%;
            box-sizing: border-box;
        }

        .new-chat-btn {
            width: 100%;
            padding: 12px;
            background: var(--primary);
            color: white;
            border: none;
            border-radius: var(--radius-sm);
            cursor: pointer;
            font-size: 14px;
            font-weight: 600;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            transition: all 0.2s ease;
            box-sizing: border-box;
        }

        .new-chat-btn:hover {
            background: var(--primary-dark);
            transform: translateY(-1px);
        }
        
        /* Verification Popup Styles */
        .email-display {
            background: #F3F4F6;
            border: 1px solid #E5E7EB;
            border-radius: 8px;
            padding: 12px 16px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 15px;
        }

        .email-display i {
            color: #6B7280;
        }

        .code-input-container {
            display: flex;
            gap: 10px;
            align-items: center;
        }

        .code-input {
            font-size: 24px;
            font-weight: bold;
            letter-spacing: 8px;
            text-align: center;
            padding: 15px;
            width: 100%;
        }

        .code-hint-btn {
            background: #FEF3C7;
            border: 1px solid #F59E0B;
            color: #92400E;
            width: 40px;
            height: 40px;
            border-radius: 8px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.2s;
        }

        .code-hint-btn:hover {
            background: #FDE68A;
        }

        .code-hint {
            background: #FFFBEB;
            border: 1px solid #F59E0B;
            border-radius: 8px;
            padding: 12px;
        }

        .hint-box {
            display: flex;
            gap: 10px;
            align-items: flex-start;
        }

        .hint-box i {
            color: #F59E0B;
            margin-top: 2px;
        }

        .dev-code-section {
            background: #F9FAFB;
            border: 1px dashed #D1D5DB;
            border-radius: 8px;
            padding: 15px;
            margin: 15px 0;
        }

        .code-display {
            font-family: 'Courier New', monospace;
            font-size: 32px;
            font-weight: bold;
            color: #059669;
            text-align: center;
            letter-spacing: 5px;
            padding: 15px;
            background: white;
            border: 2px solid #10B981;
            border-radius: 8px;
            margin: 10px 0;
        }

        .instructions {
            background: #F0F9FF;
            border-radius: 8px;
            padding: 15px;
            margin-top: 20px;
        }

        .instructions h4 {
            color: #1E40AF;
            margin-top: 0;
        }

        .instructions ul {
            margin: 10px 0 0 0;
            padding-left: 20px;
            color: #4B5563;
        }

        .instructions li {
            margin-bottom: 5px;
            font-size: 14px;
        }

        .btn-small {
            background: #3B82F6;
            color: white;
            border: none;
            padding: 6px 12px;
            border-radius: 4px;
            font-size: 13px;
            cursor: pointer;
        }

        .btn-small:hover {
            background: #2563EB;
        }

        .btn-text {
            background: none;
            border: none;
            color: #6B7280;
            cursor: pointer;
            padding: 10px;
            font-size: 14px;
        }

        .btn-text:hover {
            color: #374151;
            text-decoration: underline;
        }

        /* Verification Modal Styles */
        .modal-overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.7);
            display: none;
            align-items: center;
            justify-content: center;
            z-index: 1000;
            padding: 20px;
        }

        .modal {
            background: white;
            border-radius: 12px;
            width: 100%;
            max-width: 450px;
            max-height: 90vh;
            overflow-y: auto;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
            position: relative;
            animation: modalSlideIn 0.3s ease;
        }

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

        .modal-close {
            position: absolute;
            top: 15px;
            right: 15px;
            background: none;
            border: none;
            font-size: 20px;
            color: #666;
            cursor: pointer;
            padding: 5px;
            border-radius: 50%;
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: background 0.2s;
        }

        .modal-close:hover {
            background: #f5f5f5;
        }

        .modal-header {
            padding: 30px 30px 20px;
            border-bottom: 1px solid #eee;
        }

        .modal-header h2 {
            margin: 0 0 8px 0;
            color: #333;
            font-size: 24px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .modal-header p {
            margin: 0;
            color: #666;
            font-size: 15px;
        }

        .modal-content {
            padding: 30px;
        }

        .modal-buttons {
            display: flex;
            flex-direction: column;
            gap: 12px;
            margin-top: 25px;
        }

        .btn-primary, .btn-secondary, .btn-tertiary {
            padding: 14px 20px;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
        }

        .btn-primary {
            background: linear-gradient(135deg, #FF6B35 0%, #FF8E53 100%);
            color: white;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(255, 107, 53, 0.4);
        }

        .btn-secondary {
            background: #f0f0f0;
            color: #333;
        }

        .btn-secondary:hover {
            background: #e0e0e0;
        }

        .btn-tertiary {
            background: transparent;
            color: #666;
            border: 1px solid #ddd;
        }

        .btn-tertiary:hover {
            background: #f9f9f9;
        }

        .modal-footer {
            padding: 20px 30px;
            background: #f9f9f9;
            border-top: 1px solid #eee;
            border-radius: 0 0 12px 12px;
            text-align: center;
            font-size: 14px;
            color: #666;
        }

        .modal-footer i {
            margin-right: 8px;
            color: #FF6B35;
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #333;
        }

        .form-control {
            width: 100%;
            padding: 12px 15px;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            font-size: 16px;
            transition: border-color 0.3s;
        }

        .form-control:focus {
            outline: none;
            border-color: #FF6B35;
        }

        .form-control[readonly] {
            background: #f9f9f9;
            cursor: not-allowed;
        }

        .form-error {
            color: #EF4444;
            font-size: 14px;
            margin-top: 6px;
            display: none;
        }

        .form-error.active {
            display: block;
        }

        .form-help {
            display: block;
            margin-top: 6px;
            font-size: 13px;
            color: #666;
        }

        /* Loading spinner */
        .loading {
            display: inline-block;
            width: 20px;
            height: 20px;
            border: 2px solid rgba(255, 255, 255, 0.3);
            border-radius: 50%;
            border-top-color: white;
            animation: spin 1s linear infinite;
        }

        @keyframes spin {
            to { transform: rotate(360deg); }
        }
        
        .btn-google {
            background: white;
            color: #333;
            border: 1px solid #ddd;
            padding: 12px 20px;
            border-radius: 8px;
            font-size: 16px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            width: 100%;
            transition: all 0.3s;
        }

        .btn-google:hover {
            background: #f8f8f8;
            border-color: #ccc;
        }

        .btn-google i {
            color: #DB4437;
        }
        
        /* Google Sign-In button container */
        #googleSignInButton {
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 48px;
        }

        /* Custom Google button fallback */
        .google-login-btn {
            background: white;
            color: #333;
            border: 1px solid #ddd;
            border-radius: 4px;
            padding: 12px 24px;
            font-size: 14px;
            font-weight: 500;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            transition: all 0.3s;
            width: 240px;
        }

        .google-login-btn:hover {
            background: #f8f8f8;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
        }

        .google-login-btn i {
            color: #DB4437;
            font-size: 18px;
        }
        
        /* ============================================ */
        /* DARK MODE STYLES FOR MOBILE AND SYSTEM PREFERENCE */
        /* ============================================ */
        
        @media (prefers-color-scheme: dark) {
            /* Mobile Dark Mode */
            @media (max-width: 1200px) {
                body, html {
                    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
                    color: #f8fafc;
                }
                .ai-bubble .table-container {
            background: #1e293b !important;
            border: 1px solid #475569 !important;
            border-radius: 12px !important;
        }
        
        .ai-bubble .table-container table {
            background: #1e293b !important;
            color: #e2e8f0 !important;
            border: none !important;
            min-width: 700px;
        }
        
        .ai-bubble .table-container table thead {
            background: linear-gradient(135deg, #2D3047 0%, #1a1c2b 100%) !important;
        }
        
        .ai-bubble .table-container table th {
            color: white !important;
            border-bottom: 2px solid #FF6B35 !important;
            background: transparent !important;
        }
        
        .ai-bubble .table-container table td {
            color: #e2e8f0 !important;
            border-bottom: 1px solid #475569 !important;
            background: transparent !important;
        }
        
        .ai-bubble .table-container table tbody tr {
            background: transparent !important;
        }
        
        .ai-bubble .table-container table tbody tr:hover {
            background-color: #334155 !important;
        }
        
        .ai-bubble .table-container table tbody tr:nth-child(even) {
            background-color: rgba(51, 65, 85, 0.4) !important;
        }
        
        .ai-bubble .table-container table tbody tr:nth-child(even):hover {
            background-color: #475569 !important;
        }
        
        /* Direct table styling (in case table-container is not used) */
        .ai-bubble table {
            background: #1e293b !important;
            color: #e2e8f0 !important;
            border: 1px solid #475569 !important;
        }
        
        .ai-bubble table th {
            background: #2D3047 !important;
            color: white !important;
        }
        
        .ai-bubble table td {
            color: #e2e8f0 !important;
            border-color: #475569 !important;
            background: transparent !important;
        }
        
        .ai-bubble table tr:nth-child(even) {
            background-color: rgba(51, 65, 85, 0.4) !important;
        }

                .app-container {
                    background: #0f172a;
                }
                
                .main-content {
                    background: #0f172a;
                }
                
                .mobile-header {
                    background: #1e293b;
                    border-bottom: 1px solid #334155;
                }
                
                .chat-header {
                    background: #1e293b;
                    border-bottom-color: #334155;
                    backdrop-filter: blur(10px);
                    background: rgba(30, 41, 59, 0.95);
                }
                
                .chat-header h2 {
                    color: #f1f5f9;
                }
                
                .auth-btn {
                    background: #334155;
                    color: #f1f5f9;
                    border-color: #475569;
                }
                
                .auth-btn:hover {
                    background: #475569;
                }
                
                .logout-btn {
                    background: #7f1d1d;
                    color: #fecaca;
                    border-color: #ef4444;
                }
                
                .logout-btn:hover {
                    background: #ef4444;
                    color: white;
                }
                
                .status {
                    background: #334155;
                    color: #cbd5e1;
                }
                
                .status-dot {
                    background: #10B981;
                }
                
                .messages-container {
                    background: #0f172a;
                }
                
                .user-bubble {
                    background: linear-gradient(135deg, #c2410c 0%, #ea580c 100%);
                }
                
                .user-bubble:after {
                    background: #c2410c;
                }
                
                .ai-bubble {
                    background: #1e293b;
                    border-color: #334155;
                    box-shadow: 0 10px 25px rgba(0,0,0,0.4);
                }
                
                .ai-bubble:before {
                    background: linear-gradient(90deg, #FF6B35 0%, #00A8E8 100%);
                }
                
                .ai-bubble-content {
                    color: #e2e8f0;
                }
                
                .ai-bubble h1,
                .ai-bubble h2,
                .ai-bubble h3,
                .ai-bubble h4 {
                    color: #f8fafc;
                }
                
                .ai-bubble strong {
                    color: #f8fafc;
                }
                
                .ai-bubble p,
                .ai-bubble li {
                    color: #e2e8f0;
                }
                
                .ai-bubble code {
                    background: #334155;
                    color: #fbbf24;
                    border-color: #475569;
                }
                
                .ai-bubble blockquote {
                    background: #1e293b;
                    color: #cbd5e1;
                    border-left-color: #FF6B35;
                }
                
                .ai-bubble hr {
                    background: linear-gradient(90deg, transparent, #475569, transparent);
                }
                
                .table-container {
                    background: #1e293b;
                    border-color: #334155;
                }
                
                .table-container table {
                    background: #1e293b;
                    border-color: #334155;
                    box-shadow: 0 4px 6px rgba(0,0,0,0.2);
                }
                
                .table-container table thead {
                    background: linear-gradient(135deg, #2D3047 0%, #1a1c2b 100%);
                }
                
                .table-container table td {
                    color: #e2e8f0;
                    border-bottom-color: #334155;
                }
                
                .table-container table tbody tr:hover {
                    background-color: #334155;
                }
                
                .table-container table tbody tr:nth-child(even) {
                    background-color: #1e293b;
                }
                
                .table-container table tbody tr:nth-child(even):hover {
                    background-color: #334155;
                }
                
                /* Input container dark mode */
                .input-container {
                    background: #1e293b;
                    border-top-color: #334155;
                    backdrop-filter: blur(20px);
                    background: rgba(30, 41, 59, 0.98);
                    box-shadow: 0 -4px 20px rgba(0,0,0,0.3);
                }
                
                #userInput {
                    background: #334155;
                    border-color: #475569;
                    color: #f8fafc;
                }
                
                #userInput:focus {
                    border-color: #FF6B35;
                    box-shadow: 0 0 0 4px rgba(255,107,53,0.2);
                    background: #475569;
                }
                
                #userInput::placeholder {
                    color: #94a3b8;
                }
                
                #userInput:disabled {
                    background: #1e293b;
                    color: #64748b;
                }
                
                .input-hint {
                    background: rgba(51, 65, 85, 0.9);
                    border-color: #475569;
                    color: #cbd5e1;
                }
                
                .send-button {
                    background: linear-gradient(135deg, #FF6B35 0%, #FF8E53 100%);
                }
                
                .send-button:hover {
                    background: linear-gradient(135deg, #E55A2B 0%, #FF6B35 100%);
                }
                
                .send-button:disabled {
                    background: #475569;
                }
                
                /* Stats panel dark mode */
                .stats-panel {
                    background: #1e293b;
                    border-bottom-color: #334155;
                }
                
                .stat-card {
                    background: #334155;
                    border-color: #475569;
                }
                
                .stat-icon {
                    color: #FF6B35;
                }
                
                .stat-number {
                    color: #f8fafc;
                }
                
                .stat-label {
                    color: #94a3b8;
                }
                
                /* Usage warning dark mode */
                .usage-warning {
                    background: linear-gradient(135deg, #78350f 0%, #92400e 100%);
                    border-left-color: #f59e0b;
                    margin: 0 16px;
                    margin-top: 12px;
                }
                
                .usage-warning i {
                    color: #fbbf24;
                }
                
                .warning-content strong {
                    color: #fef3c7;
                }
                
                .warning-content span {
                    color: #fde68a;
                }
                
                .warning-action {
                    background: #f59e0b;
                    color: #78350f;
                }
                
                .warning-action:hover {
                    background: #fbbf24;
                }
                
                /* Typing indicator dark mode */
                .typing-indicator {
                    background: #1e293b;
                    border-color: #334155;
                }
                
                .typing-dot {
                    background: linear-gradient(135deg, #FF6B35 0%, #FF8E53 100%);
                }
                
                /* Scrollbar dark mode */
                .messages-container::-webkit-scrollbar-track {
                    background: #0f172a;
                }
                
                .messages-container::-webkit-scrollbar-thumb {
                    background: #475569;
                    border-color: #0f172a;
                }
                
                .messages-container::-webkit-scrollbar-thumb:hover {
                    background: #64748b;
                }
                
                /* Notification dark mode */
                .notification {
                    background: #1e293b;
                    border-left-color: #FF6B35;
                    color: #f8fafc;
                }
                
                /* Scroll to bottom dark mode */
                .scroll-to-bottom {
                    background: #FF6B35;
                }
                
                .scroll-to-bottom:hover {
                    background: #E55A2B;
                }
            }
            
            /* Desktop Dark Mode */
            @media (min-width: 1201px) and (prefers-color-scheme: dark) {
                :root {
                    --bg: #0f172a;
                    --bg-secondary: #1e293b;
                    --bg-tertiary: #334155;
                    --border: #475569;
                    --border-light: #334155;
                    --text: #f8fafc;
                    --text-light: #cbd5e1;
                    --text-lighter: #94a3b8;
                    --shadow: 0 1px 3px rgba(0,0,0,0.3);
                    --shadow-md: 0 4px 6px rgba(0,0,0,0.2);
                    --shadow-lg: 0 10px 25px rgba(0,0,0,0.4);
                }
                
                body, html {
                    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
                }
                
                .app-container {
                    background: #0f172a;
                    box-shadow: 0 10px 40px rgba(0,0,0,0.5);
                }
                
                .main-content {
                    background: #0f172a;
                }
                
                .chat-header {
                    background: #1e293b;
                    border-bottom-color: #334155;
                    background: rgba(30, 41, 59, 0.95);
                }
                
                .chat-header h2 {
                    color: #f8fafc;
                }
                
                .stats-panel {
                    background: #1e293b;
                    border-bottom-color: #334155;
                }
                
                .stat-card {
                    background: #334155;
                    border-color: #475569;
                }
                
                .stat-icon {
                    color: #FF6B35;
                }
                
                .stat-number {
                    color: #f8fafc;
                }
                
                .stat-label {
                    color: #94a3b8;
                }
                
                .input-container {
                    background: #1e293b;
                    border-top-color: #334155;
                    background: rgba(30, 41, 59, 0.98);
                }
                
                #userInput {
                    background: #334155;
                    border-color: #475569;
                    color: #f8fafc;
                }
                
                #userInput:focus {
                    border-color: #FF6B35;
                    background: #475569;
                }
                
                #userInput::placeholder {
                    color: #94a3b8;
                }
                
                .input-hint {
                    background: rgba(51, 65, 85, 0.9);
                    border-color: #475569;
                    color: #cbd5e1;
                }
                
                .usage-warning {
                    background: linear-gradient(135deg, #78350f 0%, #92400e 100%);
                    border-left-color: #f59e0b;
                }
                
                .usage-warning i {
                    color: #fbbf24;
                }
                
                .warning-content strong {
                    color: #fef3c7;
                }
                
                .warning-content span {
                    color: #fde68a;
                }
            }
            
            /* Modal dark mode */
            .modal-overlay {
                background: rgba(0, 0, 0, 0.8);
            }
            
            .modal {
                background: #1e293b;
                color: #f8fafc;
            }
            
            .modal-header {
                border-bottom-color: #334155;
            }
            
            .modal-header h2 {
                color: #f8fafc;
            }
            
            .modal-header p {
                color: #cbd5e1;
            }
            
            .form-group label {
                color: #f8fafc;
            }
            
            .form-control {
                background: #334155;
                border-color: #475569;
                color: #f8fafc;
            }
            
            .form-control:focus {
                border-color: #FF6B35;
            }
            
            .form-control[readonly] {
                background: #1e293b;
                color: #94a3b8;
            }
            
            .modal-footer {
                background: #0f172a;
                border-top-color: #334155;
                color: #94a3b8;
            }
            
            .modal-close {
                color: #cbd5e1;
            }
            
            .modal-close:hover {
                background: #334155;
            }
            
            .btn-secondary {
                background: #334155;
                color: #f8fafc;
                border-color: #475569;
            }
            
            .btn-secondary:hover {
                background: #475569;
            }
            
            .btn-tertiary {
                background: transparent;
                color: #cbd5e1;
                border-color: #475569;
            }
            
            .btn-tertiary:hover {
                background: #334155;
            }
            
            .btn-google {
                background: #334155;
                color: #f8fafc;
                border-color: #475569;
            }
            
            .btn-google:hover {
                background: #475569;
            }
            
            /* Email display dark mode */
            .email-display {
                background: #334155;
                border-color: #475569;
                color: #f8fafc;
            }
            
            .email-display i {
                color: #cbd5e1;
            }
            
            /* Code hint dark mode */
            .code-hint {
                background: #78350f;
                border-color: #f59e0b;
                color: #fef3c7;
            }
            
            .hint-box i {
                color: #fbbf24;
            }
            
            .dev-code-section {
                background: #1e293b;
                border-color: #475569;
                color: #cbd5e1;
            }
            
            .code-display {
                background: #0f172a;
                border-color: #10B981;
                color: #10B981;
            }
            
            .instructions {
                background: #1e3a8a;
                color: #dbeafe;
            }
            
            .instructions h4 {
                color: #93c5fd;
            }
            
            .instructions ul {
                color: #dbeafe;
            }
        }
        
        /* Dark mode class for manual toggle (optional) */
        body.dark-mode {
            background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
        }
        
        body.dark-mode .app-container {
            background: #0f172a;
        }
        
        /* Mobile input single line class */
        .mobile-input-single-line {
            overflow: hidden !important;
            text-overflow: ellipsis !important;
            white-space: nowrap !important;
        }

        /* Subscription Styles */
.subscription-status {
  padding: 15px;
  background: #f0f9ff;
  border-left: 4px solid #007bff;
  border-radius: 8px;
  margin-bottom: 20px;
}

.badge {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 600;
}

.badge-info {
  background: #d1ecf1;
  color: #0c5460;
}

.badge-success {
  background: #d4edda;
  color: #155724;
}

.badge-danger {
  background: #f8d7da;
  color: #721c24;
}

.badge-secondary {
  background: #e2e3e5;
  color: #383d41;
}

.badge a {
  color: inherit;
  text-decoration: underline;
  cursor: pointer;
}

.subscription-modal {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-bottom: 20px;
}

.plan-card {
  border: 2px solid #e0e0e0;
  padding: 20px;
  border-radius: 12px;
  text-align: center;
  transition: all 0.3s ease;
}

.plan-card:hover {
  border-color: #007bff;
  box-shadow: 0 10px 25px rgba(0, 123, 255, 0.1);
  transform: translateY(-5px);
}

.plan-price {
  font-size: 1.8rem;
  font-weight: 700;
  color: #007bff;
  margin: 10px 0;
}

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-content {
  background: white;
  padding: 30px;
  border-radius: 12px;
  max-width: 800px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.btn {
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-primary {
  background: #007bff;
  color: white;
}

.btn-primary:hover {
  background: #0056b3;
}

.btn-secondary {
  background: #6c757d;
  color: white;
}

.btn-secondary:hover {
  background: #545b62;
}
.disclaimer-note {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.2rem;
    margin-top: 0.2rem;
    padding: 0.5rem 1rem;
    background-color: rgba(0, 0, 0, 0.03);
    border-radius: 30px;
    font-size: 0.75rem;
    color: #666;
    border: 1px solid rgba(0, 0, 0, 0.05);
    text-align: center;
}

.disclaimer-note i {
    color: #f0b400; /* or any accent color you use */
    font-size: 0.85rem;
}

@media (max-width: 768px) {
    .disclaimer-note {
        font-size: 0.7rem;
        padding: 0.4rem 0.75rem;
    }
}


/* Adjust button margins for mobile */
@media (max-width: 768px) {
    .sidebar-billing-btn {
        margin: 20px 12px 40px 12px; /* slightly smaller on sides, keep bottom margin */
    }
}

/* Keep the existing button styles (provided earlier) */
.sidebar-billing-btn {
    margin: 30px 16px 40px 16px;
    display: block;
}

.sidebar-billing-btn .nav-link {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 14px 20px;
    background: var(--card-bg-light, rgba(255, 255, 255, 0.08));
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--card-border-light, rgba(255, 107, 53, 0.2));
    border-radius: 50px;
    color: var(--text-primary-light, #1e293b);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.sidebar-billing-btn .nav-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 107, 53, 0.2), transparent);
    transition: left 0.5s;
}

.sidebar-billing-btn .nav-link:hover::before {
    left: 100%;
}

.sidebar-billing-btn .nav-link:hover {
    background: var(--accent-light, #ff6b35);
    border-color: var(--accent-light, #ff6b35);
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 15px 25px -8px rgba(255, 107, 53, 0.4);
}

.sidebar-billing-btn .nav-link i {
    font-size: 1.3rem;
    transition: transform 0.3s;
}

.sidebar-billing-btn .nav-link:hover i {
    transform: rotate(15deg) scale(1.1);
}

/* Dark mode adjustments */
@media (prefers-color-scheme: dark) {
    .sidebar-billing-btn .nav-link {
        background: rgba(255, 255, 255, 0.05);
        border-color: rgba(255, 107, 53, 0.3);
        color: #f1f5f9;
    }
    .sidebar-billing-btn .nav-link:hover {
        background: var(--accent-light, #ff8b5c);
        color: #0f172a;
    }
}