:root {
            --black: #000000;
            --dark-gray: #121212;
            --medium-gray: #1e1e1e;
            --light-gray: #2d2d2d;
            --accent: #00f2ff;
            --accent-alt: #8a2be2;
            --text: #ffffff;
            --text-secondary: rgba(255, 255, 255, 0.7);
            --card-bg: rgba(30, 30, 30, 0.7);
            --glass-effect: rgba(255, 255, 255, 0.05);
            --glass-border: rgba(255, 255, 255, 0.1);
            --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Roboto', 'Segoe UI', sans-serif;
            background-color: var(--black);
            color: var(--text);
            line-height: 1.6;
            background-image: 
                radial-gradient(circle at 10% 20%, rgba(0, 242, 255, 0.1) 0%, transparent 20%),
                radial-gradient(circle at 90% 80%, rgba(138, 43, 226, 0.1) 0%, transparent 20%);
            background-attachment: fixed;
        }
        
 .back-button {
         color: var(--text-secondary);
         font-size: 1rem;
         text-decoration: none;
         display: flex;
         align-items: center;
         transition: all 0.3s ease;
      }
      
      .back-button:hover {
         color: var(--text);
      }
      
      .back-button i {
         margin-right: 0.5rem;
      }

      .navbar {
            background-color: rgba(0, 0, 0, 0.8);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            color: var(--text);
            padding: 1.2rem 2rem;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 100;
            display: flex;
            justify-content: space-between;
            align-items: center;
            border-bottom: 1px solid var(--glass-border);
        }
        
        .logo {
            font-size: 1.8rem;
            font-weight: 700;
            letter-spacing: 1px;
        }
        
        .logo span {
            background: linear-gradient(45deg, var(--accent), var(--accent-alt));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        

         @media (max-width: 768px) {
            .navbar {
                padding: 1rem;
            }
            
            .logo {
                font-size: 1.5rem;
            }
            
            .main-container {
                padding: 0 1rem;
                margin-top: 5rem;
            }
            
            .action-buttons,
            .utility-buttons {
                grid-template-columns: 1fr;
            }
            
            .canvas-container {
                height: 400px;
            }
        }

        
        .glow {
            position: absolute;
            border-radius: 50%;
            filter: blur(20px);
        }
        
        .glow-1 {
            width: 150px;
            height: 150px;
            background-color: rgba(0, 242, 255, 0.1);
            top: -75px;
            left: -75px;
        }
        
        .glow-2 {
            width: 100px;
            height: 100px;
            background-color: rgba(138, 43, 226, 0.1);
            bottom: -50px;
            right: -50px;
        }

         footer {
            background-color: rgba(0, 0, 0, 0.8);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            color: var(--text-secondary);
            text-align: center;
            padding: 1rem;
            border-top: 1px solid var(--glass-border);
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .footer-text {
            font-size: 0.9rem;
        }