:root {
            --primary: #00C853;
            --primary-dark: #009624;
            --primary-light: #5EFC82;
            --secondary: #2962FF;
            --dark: #263238;
            --gray: #607D8B;
            --light-gray: #ECEFF1;
            --white: #FFFFFF;
            --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
            --radius: 16px;
            --gradient: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            --glass-bg: rgba(255, 255, 255, 0.8);
            --glass-border: rgba(255, 255, 255, 0.2);
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Poppins', sans-serif;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
            color: var(--dark);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }
        
        .container {
            max-width: 1200px;
            width: 100%;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: start;
        }
        
        .glass-card {
            background: var(--glass-bg);
            backdrop-filter: blur(10px);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 35px;
            border: 1px solid var(--glass-border);
            transition: var(--transition);
        }
        
        .glass-card:hover {
            box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
        }
        
        .header {
            text-align: center;
            margin-bottom: 35px;
        }
        
        .logo {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 15px;
            margin-bottom: 15px;
        }
        
        .logo-icon {
            width: 70px;
            height: 70px;
            background: var(--gradient);
            border-radius: 18px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 10px 25px rgba(0, 200, 83, 0.3);
            position: relative;
            overflow: hidden;
        }
        
        .logo-icon::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(255,255,255,0.2) 0%, rgba(255,255,255,0) 100%);
        }
        
        .logo-icon i {
            font-size: 32px;
            color: white;
            z-index: 1;
        }
        
        .logo-text h1 {
            font-family: 'Montserrat', sans-serif;
            font-size: 36px;
            background: var(--gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-bottom: 5px;
        }
        
        .logo-text p {
            color: var(--gray);
            font-size: 16px;
            font-weight: 500;
        }
        
        .tagline {
            color: var(--gray);
            font-size: 18px;
            max-width: 500px;
            margin: 0 auto;
            line-height: 1.6;
        }
        
        .card-title {
            font-family: 'Montserrat', sans-serif;
            font-size: 24px;
            color: var(--dark);
            margin-bottom: 25px;
            display: flex;
            align-items: center;
            gap: 12px;
            position: relative;
            padding-bottom: 15px;
        }
        
        .card-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 4px;
            background: var(--gradient);
            border-radius: 2px;
        }
        
        .card-title i {
            color: var(--primary);
        }
        
        .input-group {
            margin-bottom: 25px;
        }
        
        .input-label {
            display: block;
            font-weight: 500;
            margin-bottom: 10px;
            color: var(--dark);
            font-size: 16px;
        }
        
        .input-field {
            width: 100%;
            padding: 18px 20px;
            border: 2px solid var(--light-gray);
            border-radius: var(--radius);
            font-family: 'Poppins', sans-serif;
            font-size: 16px;
            transition: var(--transition);
            background: rgba(255, 255, 255, 0.7);
        }
        
        .input-field:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 200, 83, 0.2);
            background: white;
        }
        
        .customization-options {
            margin: 30px 0;
        }
        
        .option-group {
            margin-bottom: 25px;
        }
        
        .option-label {
            display: block;
            font-weight: 500;
            margin-bottom: 12px;
            color: var(--dark);
            font-size: 16px;
        }
        
        .color-options {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 12px;
        }
        
        .color-option {
            width: 100%;
            aspect-ratio: 1;
            border-radius: 12px;
            cursor: pointer;
            transition: var(--transition);
            border: 3px solid transparent;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }
        
        .color-option:hover {
            transform: translateY(-3px);
        }
        
        .color-option.active {
            border-color: var(--dark);
            transform: scale(1.05);
        }
        
        .color-option.active::after {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: white;
            font-size: 14px;
            text-shadow: 0 1px 3px rgba(0,0,0,0.3);
        }
        
        .color-option.black.active::after {
            color: white;
        }
        
        .color-option.white.active::after {
            color: var(--dark);
        }
        
        .free-badge {
            position: absolute;
            top: -5px;
            right: -5px;
            background: var(--primary);
            color: white;
            font-size: 10px;
            padding: 2px 6px;
            border-radius: 10px;
            font-weight: 600;
        }
        
        .size-options {
            display: flex;
            gap: 15px;
        }
        
        .size-option {
            flex: 1;
            text-align: center;
            padding: 15px;
            border: 2px solid var(--light-gray);
            border-radius: var(--radius);
            cursor: pointer;
            transition: var(--transition);
            font-weight: 500;
            background: rgba(255, 255, 255, 0.7);
        }
        
        .size-option:hover {
            border-color: var(--primary);
            transform: translateY(-2px);
        }
        
        .size-option.active {
            background: var(--primary);
            color: white;
            border-color: var(--primary);
            box-shadow: 0 5px 15px rgba(0, 200, 83, 0.3);
        }
        
        .action-buttons {
            display: flex;
            gap: 15px;
            margin-top: 35px;
        }
        
        .btn {
            flex: 1;
            padding: 18px 20px;
            border: none;
            border-radius: var(--radius);
            font-family: 'Poppins', sans-serif;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            position: relative;
            overflow: hidden;
        }
        
        .btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
            transition: 0.5s;
        }
        
        .btn:hover::before {
            left: 100%;
        }
        
        .btn-primary {
            background: var(--gradient);
            color: white;
            box-shadow: 0 8px 20px rgba(0, 200, 83, 0.3);
        }
        
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 25px rgba(0, 200, 83, 0.4);
        }
        
        .btn-secondary {
            background: var(--light-gray);
            color: var(--dark);
        }
        
        .btn-secondary:hover {
            background: #dfe3e8;
            transform: translateY(-3px);
        }
        
        .btn:disabled {
            opacity: 0.6;
            cursor: not-allowed;
            transform: none !important;
            box-shadow: none !important;
        }
        
        .btn:disabled::before {
            display: none;
        }
        
        .preview-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            text-align: center;
            height: 100%;
        }
        
        .qr-container {
            width: 100%;
            max-width: 320px;
            margin: 20px auto;
            padding: 25px;
            background: white;
            border-radius: var(--radius);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.08);
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 320px;
            transition: var(--transition);
            border: 1px solid rgba(0,0,0,0.05);
            position: relative;
        }
        
        .qr-container:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
        }
        
        #qrcode {
            display: flex;
            justify-content: center;
            align-items: center;
            width: 100%;
            position: relative;
        }
        
        #qrcode canvas {
            border-radius: 10px;
            transition: var(--transition);
        }
        
        .qr-logo-overlay {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            pointer-events: none;
            z-index: 10;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }
        
        .qr-logo-overlay img {
            display: block;
            width: 100%;
            height: 100%;
            object-fit: contain;
        }
        
        .placeholder {
            color: var(--gray);
            font-size: 16px;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 15px;
        }
        
        .placeholder i {
            font-size: 60px;
            color: var(--light-gray);
            opacity: 0.7;
        }
        
        .features {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-top: 35px;
        }
        
        .feature {
            display: flex;
            align-items: center;
            gap: 15px;
            padding: 20px;
            background: rgba(0, 200, 83, 0.05);
            border-radius: var(--radius);
            transition: var(--transition);
            border: 1px solid rgba(0, 200, 83, 0.1);
        }
        
        .feature:hover {
            transform: translateY(-3px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        
        .feature-icon {
            width: 55px;
            height: 55px;
            background: var(--primary);
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 22px;
            box-shadow: 0 5px 15px rgba(0, 200, 83, 0.3);
        }
        
        .feature-text h3 {
            font-size: 16px;
            margin-bottom: 5px;
            color: var(--dark);
        }
        
        .feature-text p {
            font-size: 14px;
            color: var(--gray);
            line-height: 1.5;
        }
        
        .notification {
            position: fixed;
            bottom: 30px;
            right: 30px;
            background: var(--dark);
            color: white;
            padding: 18px 24px;
            border-radius: var(--radius);
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
            transform: translateY(100px);
            opacity: 0;
            transition: var(--transition);
            z-index: 1000;
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: 500;
            max-width: 350px;
            border-left: 4px solid var(--primary);
        }
        
        .notification.show {
            transform: translateY(0);
            opacity: 1;
        }
        
        .notification.success {
            border-left-color: var(--primary);
        }
        
        .notification.error {
            border-left-color: #ff5252;
        }
        
        .watermark {
            text-align: center;
            margin-top: 30px;
            color: var(--gray);
            font-size: 14px;
            opacity: 0.8;
        }
        
        .advanced-options {
            margin-top: 25px;
            padding-top: 25px;
            border-top: 1px solid var(--light-gray);
        }
        
        .toggle-advanced {
            background: none;
            border: none;
            color: var(--primary);
            font-weight: 500;
            font-size: 15px;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 15px;
            transition: var(--transition);
        }
        
        .toggle-advanced:hover {
            color: var(--primary-dark);
        }
        
        .advanced-content {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.5s ease;
        }
        
        .advanced-content.open {
            max-height: 500px;
        }
        
        .pattern-options {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
            margin-top: 15px;
        }
        
        .pattern-option {
            text-align: center;
            padding: 15px 10px;
            border: 2px solid var(--light-gray);
            border-radius: var(--radius);
            cursor: pointer;
            transition: var(--transition);
            background: rgba(255, 255, 255, 0.7);
        }
        
        .pattern-option:hover {
            border-color: var(--primary);
        }
        
        .pattern-option.active {
            border-color: var(--primary);
            background: rgba(0, 200, 83, 0.05);
        }
        
        .pattern-preview {
            width: 40px;
            height: 40px;
            margin: 0 auto 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--dark);
            font-size: 20px;
        }
        
        .pattern-name {
            font-size: 13px;
            font-weight: 500;
        }

        /* ===== PAYMENT STYLES ===== */
        .payment-section {
            background: linear-gradient(135deg, #fff3cd 0%, #ffeaa7 100%);
            border: 2px solid #ffd54f;
            border-radius: var(--radius);
            padding: 25px;
            margin: 25px 0;
            text-align: center;
        }
        
        .payment-header {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            margin-bottom: 15px;
        }
        
        .payment-header i {
            color: #d4af37;
            font-size: 24px;
        }
        
        .payment-header h3 {
            color: #856404;
            font-size: 20px;
            margin: 0;
        }
        
        .payment-description {
            color: #856404;
            margin-bottom: 20px;
            line-height: 1.5;
        }
        
        .pay-button {
            background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
            color: white;
            border: none;
            padding: 16px 32px;
            border-radius: var(--radius);
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 8px 20px rgba(40, 167, 69, 0.3);
        }
        
        .pay-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 25px rgba(40, 167, 69, 0.4);
        }
        
        .pay-button:disabled {
            background: var(--light-gray);
            color: var(--gray);
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }
        
        .premium-badge {
            background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
            color: #856404;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            display: inline-flex;
            align-items: center;
            gap: 4px;
            margin-left: 8px;
        }
        
        .locked-feature {
            position: relative;
            opacity: 0.6;
        }
        
        .locked-feature::after {
            content: '\f023';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.8);
            color: white;
            width: 30px;
            height: 30px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
        }

        /* ===== ACCESS LOCK STYLES ===== */
        .access-lock-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.8);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: white;
            border-radius: var(--radius);
            z-index: 10;
            backdrop-filter: blur(5px);
        }
        
        .access-lock-message {
            text-align: center;
            padding: 20px;
            max-width: 300px;
        }
        
        .access-lock-message i {
            font-size: 48px;
            color: #ffd54f;
            margin-bottom: 15px;
        }
        
        .access-lock-message h3 {
            font-size: 20px;
            margin-bottom: 10px;
            color: white;
        }
        
        .access-lock-message p {
            font-size: 14px;
            margin-bottom: 20px;
            opacity: 0.9;
        }

        /* Subscription Status Banner */
        .subscription-status {
            background: linear-gradient(135deg, #00C853, #009624);
            color: white;
            padding: 12px 20px;
            border-radius: var(--radius);
            margin: 15px 0;
            text-align: center;
            font-weight: 500;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            box-shadow: 0 5px 15px rgba(0, 200, 83, 0.3);
        }

        .subscription-status.expiring {
            background: linear-gradient(135deg, #FFA000, #FF6F00);
        }

        .subscription-status.expired {
            background: linear-gradient(135deg, #FF5252, #D32F2F);
        }

        /* Free Feature Indicator */
        .free-indicator {
            display: inline-flex;
            align-items: center;
            gap: 5px;
            background: var(--primary);
            color: white;
            padding: 4px 8px;
            border-radius: 12px;
            font-size: 11px;
            font-weight: 600;
            margin-left: 8px;
        }

        /* Logo Upload Styles */
        .logo-upload-group {
            margin-bottom: 25px;
            transition: var(--transition);
        }

        .logo-upload-container {
            position: relative;
        }

        .logo-upload-input {
            width: 100%;
            padding: 18px 20px;
            border: 2px solid var(--light-gray);
            border-radius: var(--radius);
            font-family: 'Poppins', sans-serif;
            font-size: 16px;
            transition: var(--transition);
            background: rgba(255, 255, 255, 0.7);
        }

        .logo-upload-input:focus {
            border-color: var(--primary);
            outline: none;
            box-shadow: 0 0 0 3px rgba(0, 200, 83, 0.2);
            background: white;
        }

        .logo-preview-container {
            margin-top: 15px;
            text-align: center;
            display: none;
        }

        .logo-preview {
            max-width: 100px;
            max-height: 100px;
            border-radius: 8px;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
            margin-bottom: 10px;
        }

        .remove-logo-btn {
            background: #ff5252;
            color: white;
            border: none;
            padding: 8px 16px;
            border-radius: var(--radius);
            font-size: 14px;
            cursor: pointer;
            transition: var(--transition);
        }

        .remove-logo-btn:hover {
            background: #d32f2f;
            transform: translateY(-2px);
        }

        /* Logo Locked State */
        .logo-locked-container {
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            border: 2px dashed #dee2e6;
            border-radius: var(--radius);
            padding: 25px;
            text-align: center;
            margin-bottom: 25px;
            position: relative;
        }

        .logo-locked-icon {
            font-size: 48px;
            color: #6c757d;
            margin-bottom: 15px;
        }

        .logo-locked-title {
            font-size: 18px;
            font-weight: 600;
            color: #495057;
            margin-bottom: 8px;
        }

        .logo-locked-message {
            color: #6c757d;
            font-size: 14px;
            margin-bottom: 15px;
            line-height: 1.5;
        }

        .logo-unlock-btn {
            background: linear-gradient(135deg, #28a745 0%, #20c997 100%);
            color: white;
            border: none;
            padding: 12px 24px;
            border-radius: var(--radius);
            font-size: 14px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .logo-unlock-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(40, 167, 69, 0.3);
        }

        /* ===== IMPROVED MOBILE RESPONSIVENESS ===== */
        
        /* Large tablets and small laptops */
        @media (max-width: 1200px) {
            .container {
                gap: 30px;
            }
            
            .glass-card {
                padding: 30px;
            }
        }
        
        /* Tablets */
        @media (max-width: 992px) {
            .container {
                grid-template-columns: 1fr;
                gap: 30px;
                max-width: 700px;
            }
            
            .logo {
                gap: 12px;
            }
            
            .logo-icon {
                width: 60px;
                height: 60px;
            }
            
            .logo-text h1 {
                font-size: 32px;
            }
            
            .tagline {
                font-size: 16px;
            }
        }
        
        /* Large phones */
        @media (max-width: 768px) {
            body {
                padding: 15px;
            }
            
            .glass-card {
                padding: 25px;
            }
            
            .header {
                margin-bottom: 25px;
            }
            
            .logo {
                flex-direction: column;
                gap: 15px;
                text-align: center;
            }
            
            .logo-text h1 {
                font-size: 28px;
            }
            
            .logo-text p {
                font-size: 14px;
            }
            
            .tagline {
                font-size: 15px;
            }
            
            .card-title {
                font-size: 22px;
                margin-bottom: 20px;
            }
            
            .input-field {
                padding: 16px 18px;
                font-size: 15px;
            }
            
            .color-options {
                grid-template-columns: repeat(3, 1fr);
                gap: 10px;
            }
            
            .size-options {
                flex-direction: column;
                gap: 10px;
            }
            
            .size-option {
                padding: 14px;
            }
            
            .action-buttons {
                flex-direction: column;
                gap: 12px;
            }
            
            .btn {
                padding: 16px 18px;
            }
            
            .features {
                grid-template-columns: 1fr;
                gap: 15px;
                margin-top: 25px;
            }
            
            .feature {
                padding: 18px;
            }
            
            .qr-container {
                max-width: 280px;
                min-height: 280px;
                padding: 20px;
            }
            
            .pattern-options {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .payment-section {
                padding: 20px;
            }
            
            .subscription-status {
                padding: 10px 15px;
                font-size: 14px;
            }

            .logo-locked-container {
                padding: 20px;
            }
        }
        
        /* Small phones */
        @media (max-width: 480px) {
            body {
                padding: 10px;
            }
            
            .glass-card {
                padding: 20px;
            }
            
            .header {
                margin-bottom: 20px;
            }
            
            .logo-icon {
                width: 50px;
                height: 50px;
            }
            
            .logo-icon i {
                font-size: 24px;
            }
            
            .logo-text h1 {
                font-size: 24px;
            }
            
            .tagline {
                font-size: 14px;
            }
            
            .card-title {
                font-size: 20px;
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            
            .card-title::after {
                width: 40px;
            }
            
            .input-group {
                margin-bottom: 20px;
            }
            
            .input-field {
                padding: 14px 16px;
                font-size: 14px;
            }
            
            .customization-options {
                margin: 25px 0;
            }
            
            .option-group {
                margin-bottom: 20px;
            }
            
            .color-options {
                grid-template-columns: repeat(2, 1fr);
            }
            
            .color-option {
                aspect-ratio: 1.2;
            }
            
            .pattern-options {
                grid-template-columns: 1fr;
            }
            
            .feature {
                flex-direction: column;
                text-align: center;
                gap: 12px;
            }
            
            .feature-icon {
                width: 50px;
                height: 50px;
                font-size: 20px;
            }
            
            .qr-container {
                max-width: 250px;
                min-height: 250px;
                padding: 15px;
            }
            
            .placeholder i {
                font-size: 50px;
            }
            
            .placeholder p {
                font-size: 14px;
            }
            
            .notification {
                right: 15px;
                bottom: 15px;
                left: 15px;
                max-width: none;
                padding: 15px 20px;
            }
            
            .payment-section {
                padding: 15px;
            }
            
            .pay-button {
                padding: 14px 24px;
                font-size: 15px;
            }

            .logo-locked-container {
                padding: 15px;
            }

            .logo-locked-icon {
                font-size: 36px;
            }

            .logo-locked-title {
                font-size: 16px;
            }
        }

        /* Support Button Styles */
        .support-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 28px;
            background: linear-gradient(135deg, #ff6b6b 0%, #ee5a5a 100%);
            color: white;
            text-decoration: none;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 16px;
            transition: var(--transition);
            box-shadow: 0 8px 20px rgba(255, 107, 107, 0.3);
            border: none;
            cursor: pointer;
            position: relative;
            overflow: hidden;
            font-family: 'Poppins', sans-serif;
            margin: 15px 0;
        }

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

        .support-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 25px rgba(255, 107, 107, 0.4);
            color: white;
            text-decoration: none;
        }

        .support-btn:hover::before {
            left: 100%;
        }

        .support-btn:active {
            transform: translateY(-1px);
        }

        .support-btn i {
            font-size: 18px;
            transition: var(--transition);
        }

        .support-btn:hover i {
            transform: scale(1.1);
        }

        /* Pulse animation for attention */
        @keyframes pulse {
            0% {
                box-shadow: 0 8px 20px rgba(255, 107, 107, 0.3);
            }
            50% {
                box-shadow: 0 8px 25px rgba(255, 107, 107, 0.5);
            }
            100% {
                box-shadow: 0 8px 20px rgba(255, 107, 107, 0.3);
            }
        }

        .support-btn.pulse {
            animation: pulse 2s infinite;
        }

        /* Mobile responsiveness for support button */
        @media (max-width: 768px) {
            .support-btn {
                padding: 12px 24px;
                font-size: 15px;
                margin: 12px 0;
            }
        }

        @media (max-width: 480px) {
            .support-btn {
                padding: 11px 20px;
                font-size: 14px;
                margin: 10px 0;
            }
            
            .support-btn i {
                font-size: 16px;
            }
        }
        
        /* Very small phones */
        @media (max-width: 360px) {
            .logo-text h1 {
                font-size: 22px;
            }
            
            .card-title {
                font-size: 18px;
            }
            
            .qr-container {
                max-width: 220px;
                min-height: 220px;
            }
            
            .color-options {
                grid-template-columns: repeat(2, 1fr);
                gap: 8px;
            }
        }