:root {
            --main-color: #1abc9c;
            --main-color-dark: #168e7a;
            --main-color-light: #e8f8f5;
            --main-gradient: linear-gradient(90deg, #1abc9c 0%, #16d9e3 100%);
            --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            --card-shadow: 0 15px 35px rgba(0, 0, 0, 0.07);
            --border: 1px solid rgba(26, 188, 156, 0.2);
            --radius: 16px;
            --transition: all 0.3s ease;
        }
        body {
            font-family: 'Poppins', Arial, sans-serif;
            background: #f9fafb;
            margin: 0;
            padding: 0;
            min-height: 100vh;
            color: #2c3e50;
            line-height: 1.6;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }
        
        .success-container {
            max-width: 540px;
            width: 100%;
            box-sizing: border-box;
            margin: 30px auto;
            background: #fff;
            padding: 40px;
            border-radius: var(--radius);
            box-shadow: var(--card-shadow);
            transition: var(--transition);
            border: var(--border);
            text-align: center;
            animation: slideInUp 0.8s ease-out;
        }
        
        .success-container:hover {
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
            transform: translateY(-3px);
        }
        
        .checkmark-container {
            width: 100px;
            height: 100px;
            border-radius: 50%;
            background: var(--main-gradient);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 24px;
            position: relative;
            box-shadow: 0 5px 15px rgba(26, 188, 156, 0.3);
            animation: scaleIn 0.5s cubic-bezier(0.165, 0.84, 0.44, 1) 0.3s both;
        }
        
        .checkmark-container::after {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(45deg, rgba(255,255,255,0.2) 0%, rgba(255,255,255,0) 100%);
            border-radius: 50%;
        }
        
        .checkmark {
            font-size: 3.5em;
            color: white;
            transform-origin: center;
            animation: check 0.8s cubic-bezier(0.19, 1, 0.22, 1) 0.6s both;
        }
        
        h1 {
            color: #2c3e50;
            font-size: 1.8em;
            font-weight: 700;
            margin-bottom: 16px;
            animation: fadeIn 0.5s ease-out 1s both;
        }
        
        .success-message {
            font-size: 1.1em;
            margin-bottom: 30px;
            color: #7f8c8d;
            animation: fadeIn 0.5s ease-out 1.2s both;
        }
        
        .btn-home {
            display: inline-block;
            padding: 14px 32px;
            background: var(--main-gradient);
            color: #fff;
            border: none;
            border-radius: 30px;
            text-align: center;
            text-decoration: none;
            font-size: 1.1em;
            font-weight: 600;
            transition: var(--transition);
            box-shadow: 0 4px 10px rgba(26, 188, 156, 0.2);
            letter-spacing: 0.3px;
            animation: fadeIn 0.5s ease-out 1.4s both;
        }
        
        .btn-home:hover {
            transform: translateY(-2px);
            box-shadow: 0 7px 15px rgba(26, 188, 156, 0.3);
        }
        
        @keyframes scaleIn {
            from { transform: scale(0); }
            to { transform: scale(1); }
        }
        
        @keyframes check {
            0% { opacity: 0; transform: scale(0); }
            50% { opacity: 1; transform: scale(1.2); }
            100% { opacity: 1; transform: scale(1); }
        }
        
        @keyframes fadeIn {
            from { opacity: 0; }
            to { opacity: 1; }
        }
        
        @keyframes slideInUp {
            from { transform: translateY(30px); opacity: 0; }
            to { transform: translateY(0); opacity: 1; }
        }
        
        @media (max-width: 600px) {
            .success-container {
                max-width: 92%;
                padding: 30px 20px;
                border-radius: 14px;
            }
            
            .checkmark-container {
                width: 80px;
                height: 80px;
            }
            
            .checkmark {
                font-size: 2.8em;
            }
            
            h1 {
                font-size: 1.5em;
            }
            
            .success-message {
                font-size: 1em;
            }
            
            .btn-home {
                padding: 12px 28px;
            }
        }