* {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background: linear-gradient(135deg, #25D366 0%, #128C7E 100%);
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding: 20px;
        }
        
        .container {
            background-color: white;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
            width: 100%;
            max-width: 450px;
            overflow: hidden;
            margin-bottom: 30px;
        }
        
        .header {
            background-color: #128C7E;
            color: white;
            padding: 25px;
            text-align: center;
            position: relative;
        }
        
        .coffee-icon {
            position: absolute;
            top: 15px;
            right: 20px;
            font-size: 24px;
            color: #FFDD00;
        }
        
        .header h1 {
            font-size: 24px;
            margin-bottom: 5px;
        }
        
        .header p {
            font-size: 14px;
            opacity: 0.9;
        }
        
        .form-container {
            padding: 25px;
        }
        
        .input-group {
            margin-bottom: 20px;
        }
        
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: 600;
            color: #128C7E;
        }
        
        input {
            width: 100%;
            padding: 15px;
            border: 2px solid #ddd;
            border-radius: 8px;
            font-size: 16px;
            transition: border-color 0.3s;
        }
        
        input:focus {
            border-color: #25D366;
            outline: none;
        }
        
        .input-hint {
            font-size: 12px;
            color: #777;
            margin-top: 5px;
        }
        
        button {
            background-color: #25D366;
            color: white;
            border: none;
            padding: 15px;
            width: 100%;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: background-color 0.3s;
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 10px;
        }
        
        button:hover {
            background-color: #128C7E;
        }
        
        .result {
            margin-top: 25px;
            padding: 20px;
            background-color: #f9f9f9;
            border-radius: 8px;
            text-align: center;
            display: none;
        }
        
        .result a {
            display: inline-block;
            background-color: #25D366;
            color: white;
            text-decoration: none;
            padding: 12px 25px;
            border-radius: 8px;
            font-weight: 600;
            margin-top: 15px;
            transition: background-color 0.3s;
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 8px;
        }
        
        .result a:hover {
            background-color: #128C7E;
        }
        
        .error {
            color: #e74c3c;
            font-size: 14px;
            margin-top: 5px;
            display: none;
        }
        
        .footer {
            text-align: center;
            padding: 20px;
            font-size: 12px;
            color: #777;
            border-top: 1px solid #eee;
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }
        
        .footer a {
            color: #128C7E;
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 5px;
            transition: color 0.3s;
        }
        
        .footer a:hover {
            color: #25D366;
        }
        
        .coffee-footer {
            margin-top: 10px;
            width: 100%;
            text-align: center;
        }
        
        @media (max-width: 480px) {
            .container {
                border-radius: 10px;
            }
            
            .header {
                padding: 20px;
            }
            
            .form-container {
                padding: 20px;
            }
            
            .footer {
                flex-direction: column;
                gap: 10px;
            }
        }