* {
            font-family: 'Inter', sans-serif;
        }
        
        body {
            background: linear-gradient(135deg, #064e3b 0%, #047857 100%);
            min-height: 100vh;
        }
        
        .glass-morphism {
            background: rgba(255, 255, 255, 0.98);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.2);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
        }
        
        .upload-area {
            border: 3px dashed #cbd5e1;
            transition: all 0.3s ease;
            cursor: pointer;
            min-height: 200px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 16px;
            background: #f8fafc;
        }
        
        .upload-area:hover {
            border-color: #059669;
            background: #f1f5f9;
            transform: translateY(-2px);
        }
        
        .upload-area.dragover {
            border-color: #047857;
            background: #eef2ff;
        }
        
        .preview-container {
            position: relative;
            max-width: 100%;
            min-height: 300px;
            background: repeating-conic-gradient(#f1f5f9 0% 25%, #e2e8f0 0% 50%) 50% / 20px 20px;
            border-radius: 12px;
            overflow: hidden;
        }
        
        #cropper-image {
            max-width: 100%;
            display: block;
        }
        
        .mode-toggle {
            display: flex;
            background: #f1f5f9;
            padding: 4px;
            border-radius: 50px;
            margin-bottom: 20px;
        }
        
        .mode-btn {
            flex: 1;
            padding: 12px 20px;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s ease;
            cursor: pointer;
            text-align: center;
        }
        
        .mode-btn.active {
            background: white;
            box-shadow: 0 2px 8px rgba(0,0,0,0.1);
            color: #059669;
        }
        
        .bg-option {
            border: 2px solid #e2e8f0;
            border-radius: 12px;
            padding: 12px;
            cursor: pointer;
            transition: all 0.3s ease;
            text-align: center;
        }
        
        .bg-option.active {
            border-color: #059669;
            background: #ecfdf5;
        }
        
        .bg-option i {
            font-size: 1.5rem;
            margin-bottom: 8px;
        }
        
        .dimension-input, .kb-input, .preset-input {
            border: 2px solid #e2e8f0;
            transition: all 0.3s ease;
            font-size: 1rem;
            padding: 0.75rem;
            border-radius: 12px;
            width: 100%;
        }
        
        .dimension-input:focus, .kb-input:focus, .preset-input:focus {
            border-color: #059669;
            box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.1);
            outline: none;
        }
        
        .btn-primary {
            background: linear-gradient(135deg, #059669 0%, #10b981 100%);
            transition: all 0.3s ease;
            color: white;
            padding: 0.75rem 2rem;
            border-radius: 50px;
            font-weight: 600;
        }
        
        .btn-primary:hover:not(:disabled) {
            transform: translateY(-2px);
            box-shadow: 0 10px 25px -5px rgba(5, 150, 105, 0.5);
        }
        
        .btn-primary:disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }
        
        .btn-secondary {
            background: white;
            border: 2px solid #e2e8f0;
            color: #4a5568;
            padding: 0.75rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            transition: all 0.3s ease;
        }
        
        .btn-secondary:hover:not(:disabled) {
            border-color: #059669;
            color: #059669;
            transform: translateY(-2px);
        }
        
        .size-badge {
            background: #e2e8f0;
            padding: 0.5rem 1rem;
            border-radius: 50px;
            font-size: 0.875rem;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .preset-chip {
            background: #f1f5f9;
            padding: 0.5rem 1rem;
            border-radius: 50px;
            font-size: 0.875rem;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .preset-chip:hover {
            background: #059669;
            color: white;
        }
        
        .toast-message {
            animation: slideIn 0.3s ease, fadeOut 0.3s ease 2.7s;
            position: fixed;
            bottom: 20px;
            right: 20px;
            z-index: 9999;
        }
        
        @keyframes slideIn {
            from { transform: translateX(100%); opacity: 0; }
            to { transform: translateX(0); opacity: 1; }
        }
        
        @keyframes fadeOut {
            from { opacity: 1; }
            to { opacity: 0; }
        }
        
        .spinner {
            border: 3px solid #f3f3f3;
            border-top: 3px solid #059669;
            border-radius: 50%;
            width: 24px;
            height: 24px;
            animation: spin 1s linear infinite;
        }
        
        @keyframes spin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }
        
        .progress-bar {
            height: 8px;
            background: #e2e8f0;
            border-radius: 4px;
            overflow: hidden;
        }
        
        .progress-fill {
            height: 100%;
            background: linear-gradient(90deg, #059669, #10b981);
            transition: width 0.3s ease;
        }
        
        /* Signature specific styles */
        .signature-preview {
            filter: brightness(1.05) contrast(1.1);
        }
        
        .preset-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
            gap: 8px;
        }