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

        body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            padding: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .container {
            max-width: 800px;
            width: 100%;
            background: white;
            border-radius: 10px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
            overflow: hidden;
            position: relative;
        }

        .header {
            background: linear-gradient(135deg, #4285f4 0%, #34a853 100%);
            color: white;
            padding: 30px;
        }

        .header-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
        }

        .header-text {
            flex: 1;
            text-align: center;
        }

        .header h1 {
            font-size: 2.5em;
            margin-bottom: 10px;
            font-weight: 300;
        }

        .header p {
            font-size: 1.1em;
            opacity: 0.9;
        }

        .form-container {
            padding: 40px;
        }

        /* Profile Section */
        .profile-section {
            display: none;
            z-index: 100;
        }

        .profile-info {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .profile-image {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            object-fit: cover;
            border: 2px solid rgba(255, 255, 255, 0.8);
            background: rgba(255, 255, 255, 0.2);
        }

        .profile-name {
            font-weight: 500;
            color: white;
            font-size: 14px;
            max-width: 150px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        .profile-dropdown {
            position: relative;
        }

        .profile-dropdown-btn {
            background: none;
            border: none;
            cursor: pointer;
            color: rgba(255, 255, 255, 0.9);
            padding: 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 4px;
            transition: all 0.2s ease;
        }

        .profile-dropdown-btn:hover {
            background: rgba(255, 255, 255, 0.2);
            color: white;
        }

        .profile-dropdown-menu {
            position: absolute;
            top: 100%;
            right: 0;
            margin-top: 8px;
            background: white;
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
            min-width: 150px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(-10px);
            transition: all 0.3s ease;
            z-index: 1000;
        }

        .profile-dropdown-menu.show {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .profile-dropdown-item {
            width: 100%;
            padding: 12px 16px;
            border: none;
            background: none;
            text-align: left;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 8px;
            color: #333;
            font-size: 14px;
            transition: background 0.2s ease;
            border-radius: 8px;
        }

        .profile-dropdown-item:first-child {
            border-radius: 8px 8px 0 0;
        }

        .profile-dropdown-item:last-child {
            border-radius: 0 0 8px 8px;
        }

        .profile-dropdown-item:hover {
            background: #f0f0f0;
        }

        .profile-dropdown-item i {
            font-size: 18px;
            color: #ea4335;
        }

        .login-section {
            background: #f8f9fa;
            padding: 20px;
            border-radius: 8px;
            margin-bottom: 30px;
            border: 1px solid #e9ecef;
        }

        .login-section h3 {
            color: #495057;
            margin-bottom: 15px;
            font-size: 1.2em;
        }

        .form-section-title {
            color: #333;
            font-size: 1.3em;
            font-weight: 600;
            margin: 30px 0 20px 0;
            padding-bottom: 10px;
            border-bottom: 2px solid #e0e0e0;
        }

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

        .form-group label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #495057;
            font-size: 0.95em;
        }

        .form-group input,
        .form-group select,
        .form-group textarea {
            width: 100%;
            padding: 12px 15px;
            border: 2px solid #e9ecef;
            border-radius: 6px;
            font-size: 1em;
            transition: border-color 0.3s ease;
        }

        .form-group input:focus,
        .form-group select:focus,
        .form-group textarea:focus {
            outline: none;
            border-color: #4285f4;
            box-shadow: 0 0 0 3px rgba(66, 133, 244, 0.1);
        }

        .form-group textarea {
            resize: vertical;
            min-height: 100px;
        }

        .form-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .form-row-3 {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 15px;
        }

        .model-dropdowns {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px;
            margin-bottom: 10px;
        }

        .model-dropdowns .form-group {
            margin-bottom: 0;
        }

        .admin-section {
            background: #fff3cd;
            border: 1px solid #ffeaa7;
            padding: 20px;
            border-radius: 8px;
            margin-bottom: 30px;
        }

        .admin-section h3 {
            color: #856404;
            margin-bottom: 15px;
        }

        /* Windows & Hatches Container */
        .windows-hatches-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin-bottom: 30px;
        }

        .config-section {
            background: #f8f9fa;
            border: 1px solid #e0e0e0;
            border-radius: 8px;
            padding: 15px;
            transition: all 0.3s ease;
        }

        .config-section:hover {
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
            border-color: #d0d0d0;
        }

        .config-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 12px;
            padding-bottom: 10px;
            border-bottom: 2px solid #e0e0e0;
        }

        .config-header h4 {
            color: #495057;
            font-size: 0.95em;
            font-weight: 600;
            margin: 0;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .config-header h4 i {
            font-size: 1.1em;
            color: #4285f4;
        }

        .items-list {
            min-height: 40px;
            margin-bottom: 8px;
        }

        .items-list:empty::after {
            content: 'No items added yet';
            display: block;
            text-align: center;
            padding: 15px;
            color: #999;
            font-size: 0.85em;
            font-style: italic;
        }

        .add-item-btn {
            background: #4285f4;
            color: white;
            border: none;
            padding: 6px 12px;
            border-radius: 5px;
            cursor: pointer;
            font-size: 0.85em;
            font-weight: 500;
            transition: all 0.2s ease;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .add-item-btn:hover {
            background: #357ae8;
            transform: translateY(-1px);
            box-shadow: 0 2px 4px rgba(66, 133, 244, 0.3);
        }

        .add-item-btn i {
            font-size: 1em;
        }

        /* Window and Hatch Row Styling */
        .window-row,
        .hatch-row {
            background: white;
            border: 1px solid #e0e0e0;
            border-radius: 6px;
            padding: 12px;
            margin-bottom: 10px;
            transition: all 0.2s ease;
        }

        .window-row:hover,
        .hatch-row:hover {
            border-color: #4285f4;
            box-shadow: 0 2px 6px rgba(66, 133, 244, 0.1);
        }

        .window-row .form-row,
        .hatch-row .form-row {
            display: grid;
            grid-template-columns: 1fr;
            gap: 10px;
            margin-bottom: 0;
        }

        .window-row .form-group,
        .hatch-row .form-group {
            margin-bottom: 0;
        }

        .window-row .form-group:last-child,
        .hatch-row .form-group:last-child {
            display: flex;
            align-items: flex-end;
        }

        .window-row label,
        .hatch-row label {
            font-size: 0.85em;
            color: #666;
            margin-bottom: 5px;
        }

        .window-row select,
        .window-row input,
        .hatch-row select,
        .hatch-row input {
            padding: 8px 10px;
            font-size: 0.9em;
            border: 1px solid #ddd;
            border-radius: 4px;
        }

        .remove-btn {
            background: #dc3545;
            color: white;
            border: none;
            padding: 8px 12px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 0.85em;
            font-weight: 500;
            transition: all 0.2s ease;
            white-space: nowrap;
            width: 100%;
        }

        .remove-btn:hover {
            background: #c82333;
            transform: translateY(-1px);
            box-shadow: 0 2px 4px rgba(220, 53, 69, 0.3);
        }

        .remove-btn i {
            margin-right: 2px;
        }

        .submit-btn {
            background: linear-gradient(135deg, #4285f4 0%, #34a853 100%);
            color: white;
            border: none;
            padding: 15px 40px;
            border-radius: 8px;
            font-size: 1.1em;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.2s ease;
            width: 100%;
        }

        .submit-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
        }

        .submit-btn:disabled {
            background: #6c757d;
            cursor: not-allowed;
            transform: none;
        }

        .submit-btn.loading {
            position: relative;
            color: transparent;
            pointer-events: none;
        }

        .submit-btn.loading::after {
            content: '';
            position: absolute;
            width: 20px;
            height: 20px;
            top: 50%;
            left: 50%;
            margin-left: -10px;
            margin-top: -10px;
            border: 3px solid #ffffff;
            border-top: 3px solid transparent;
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

        .loading {
            display: none;
            text-align: center;
            margin: 20px 0;
        }

        .loading .spinner {
            border: 4px solid #f3f3f3;
            border-top: 4px solid #4285f4;
            border-radius: 50%;
            width: 40px;
            height: 40px;
            animation: spin 1s linear infinite;
            margin: 0 auto 10px;
        }

        @keyframes spin {
            0% {
                transform: rotate(0deg);
            }

            100% {
                transform: rotate(360deg);
            }
        }

        .alert {
            padding: 15px;
            border-radius: 6px;
            margin-bottom: 20px;
            font-weight: 500;
        }

        .alert-success {
            background: #d4edda;
            color: #155724;
            border: 1px solid #c3e6cb;
        }

        .alert-error {
            background: #f8d7da;
            color: #721c24;
            border: 1px solid #f5c6cb;
        }

        .hidden {
            display: none;
        }

        .customer-select {
            margin-bottom: 20px;
        }

        /* Tab Styles */
        .auth-tabs {
            margin-bottom: 30px;
        }

        .tab-buttons {
            display: flex;
            border-bottom: 2px solid #e9ecef;
            margin-bottom: 20px;
        }

        .tab-btn {
            background: none;
            border: none;
            padding: 15px 30px;
            font-size: 1em;
            font-weight: 600;
            color: #6c757d;
            cursor: pointer;
            border-bottom: 3px solid transparent;
            transition: all 0.3s ease;
        }

        .tab-btn.active {
            color: #4285f4;
            border-bottom-color: #4285f4;
            background: #f8f9fa;
        }

        .tab-btn:hover {
            color: #4285f4;
            background: #f8f9fa;
        }

        .tab-panel {
            display: none;
        }

        .tab-panel.active {
            display: block;
        }

        /* Loading Animation */
        .window-loading {
            position: relative;
        }

        .window-loading::after {
            content: '';
            position: absolute;
            right: 10px;
            top: 50%;
            transform: translateY(-50%);
            width: 20px;
            height: 20px;
            border: 2px solid #f3f3f3;
            border-top: 2px solid #4285f4;
            border-radius: 50%;
            animation: spin 1s linear infinite;
        }

        .loading-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            display: none;
            justify-content: center;
            align-items: center;
            z-index: 9999;
        }

        /* Enhanced Loading Screen Styles */
        .enhanced-loading-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.8);
            display: none;
            justify-content: center;
            align-items: center;
            z-index: 10000;
        }

        .enhanced-loading-content {
            background: white;
            border-radius: 12px;
            padding: 40px;
            max-width: 500px;
            width: 90%;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
            max-height: 80vh;
            overflow-y: auto;
        }

        .loading-header {
            text-align: center;
            margin-bottom: 30px;
        }

        .loading-header h2 {
            color: #333;
            font-size: 24px;
            margin-bottom: 15px;
        }

        .loading-progress-bar {
            width: 100%;
            height: 6px;
            background: #e0e0e0;
            border-radius: 3px;
            overflow: hidden;
            margin-bottom: 10px;
        }

        .progress-fill {
            height: 100%;
            background: linear-gradient(90deg, #4285f4, #34a853);
            width: 0%;
            transition: width 0.5s ease;
            border-radius: 3px;
        }

        .loading-steps {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .loading-step {
            display: flex;
            align-items: center;
            gap: 15px;
            padding: 15px;
            border-radius: 8px;
            background: #f8f9fa;
            transition: all 0.3s ease;
            opacity: 0.6;
        }

        .loading-step.active {
            background: #e3f2fd;
            opacity: 1;
            transform: scale(1.02);
        }

        .loading-step.completed {
            background: #e8f5e8;
            opacity: 1;
        }

        .step-icon {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: #ddd;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            color: #666;
            transition: all 0.3s ease;
        }

        .loading-step.active .step-icon {
            background: #4285f4;
            color: white;
            animation: pulse 1.5s infinite;
        }

        .loading-step.completed .step-icon {
            background: #34a853;
            color: white;
        }

        .step-content h4 {
            color: #333;
            font-size: 16px;
            margin-bottom: 5px;
        }

        .step-content p {
            color: #666;
            font-size: 14px;
        }

        @keyframes pulse {
            0% {
                transform: scale(1);
                box-shadow: 0 0 0 0 rgba(66, 133, 244, 0.7);
            }
            70% {
                transform: scale(1.05);
                box-shadow: 0 0 0 10px rgba(66, 133, 244, 0);
            }
            100% {
                transform: scale(1);
                box-shadow: 0 0 0 0 rgba(66, 133, 244, 0);
            }
        }

        .add-customer-btn {
            background: #28a745;
            color: white;
            border: none;
            padding: 8px 16px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 14px;
            margin-top: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .add-customer-btn:hover {
            background: #218838;
        }


        /* Google Sign-In Styling */
        .google-signin-section {
            text-align: center;
        }

        .google-signin-section p {
            margin-bottom: 20px;
            color: #666;
        }

        .user-details {
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            padding: 15px;
            background: #f8f9fa;
            border-radius: 8px;
        }

        .user-avatar {
            width: 50px;
            height: 50px;
            border-radius: 50%;
            margin-right: 15px;
        }

        .user-text p {
            margin: 2px 0;
            text-align: left;
        }

        .user-text p:first-child {
            font-weight: bold;
            color: #333;
        }

        .user-text p:last-child {
            color: #666;
            font-size: 14px;
        }

        .sign-out-btn {
            background: #dc3545;
            color: white;
            border: none;
            padding: 8px 12px;
            border-radius: 4px;
            cursor: pointer;
            font-size: 12px;
            margin-left: 15px;
            transition: all 0.3s ease;
        }

        .sign-out-btn:hover {
            background: #c82333;
            transform: translateY(-1px);
        }

        .sign-out-btn i {
            margin-right: 5px;
        }

        /* Select2 Custom Styling */
        .select2-container {
            width: 100% !important;
        }

        .select2-container--default .select2-selection--single {
            height: 40px;
            border: 1px solid #ddd;
            border-radius: 4px;
            background-color: white;
        }

        .select2-container--default .select2-selection--single .select2-selection__rendered {
            line-height: 38px;
            padding-left: 12px;
            color: #333;
        }

        .select2-container--default .select2-selection--single .select2-selection__arrow {
            height: 38px;
            right: 10px;
        }

        .select2-container--default.select2-container--focus .select2-selection--single {
            border-color: #4285f4;
            outline: 0;
        }

        .select2-dropdown {
            border: 1px solid #ddd;
            border-radius: 4px;
            box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
        }

        .select2-container--default .select2-results__option--highlighted[aria-selected] {
            background-color: #4285f4;
        }

        /* Checkbox Styling */
        .checkbox-label {
            display: flex;
            align-items: center;
            cursor: pointer;
            font-size: 14px;
            line-height: 1.4;
            margin-bottom: 0;
        }

        .checkbox-label input[type="checkbox"] {
            display: none;
        }

        .checkmark {
            display: inline-flex;
            width: 20px;
            height: 20px;
            border: 2px solid #ddd;
            border-radius: 4px;
            margin-right: 10px;
            position: relative;
            background-color: white;
            transition: all 0.3s ease;
        }

        .checkbox-label input[type="checkbox"]:checked+.checkmark {
            background-color: #4285f4;
            border-color: #4285f4;
        }

        .checkbox-label input[type="checkbox"]:checked+.checkmark::after {
            content: '';
            position: absolute;
            left: 6px;
            top: 2px;
            width: 6px;
            height: 10px;
            border: solid white;
            border-width: 0 2px 2px 0;
            transform: rotate(45deg);
        }

        .checkbox-label:hover .checkmark {
            border-color: #4285f4;
        }

        .loading-content {
            background: white;
            padding: 30px;
            border-radius: 10px;
            text-align: center;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        }

        .loading-content .spinner {
            margin: 0 auto 15px;
        }

        .signin-loader {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 30px;
            min-height: 100px;
        }

        .signin-loader .spinner {
            width: 30px;
            height: 30px;
            border: 3px solid #f3f3f3;
            border-top: 3px solid #4285f4;
            border-radius: 50%;
            animation: spin 1s linear infinite;
            margin-bottom: 10px;
        }

        .signin-loader p {
            color: #666;
            font-size: 14px;
            margin: 0;
        }

        @media (max-width: 768px) {

            .form-row,
            .form-row-3 {
                grid-template-columns: 1fr;
            }

            .windows-hatches-container {
                grid-template-columns: 1fr;
                gap: 15px;
            }

            .config-section {
                padding: 12px;
            }

            .config-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }

            .add-item-btn {
                width: 100%;
                justify-content: center;
            }

            .window-row,
            .hatch-row {
                padding: 10px;
            }

            .container {
                margin: 10px;
            }

            .form-container {
                padding: 20px;
            }
        }