* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }
        
        .login-container {
            background: white;
            border-radius: 12px;
            box-shadow: 0 20px 60px rgba(0,0,0,0.3);
            max-width: 400px;
            width: 100%;
            padding: 40px;
            animation: slideIn 0.4s ease-out;
        }
        
        @keyframes slideIn {
            from {
                opacity: 0;
                transform: translateY(-20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        .logo {
            text-align: center;
            margin-bottom: 30px;
        }
        
        .logo-icon {
            font-size: 48px;
            margin-bottom: 10px;
        }
        
        h1 {
            color: #333;
            text-align: center;
            margin-bottom: 10px;
            font-size: 24px;
        }
        
        .subtitle {
            text-align: center;
            color: #666;
            margin-bottom: 30px;
            font-size: 14px;
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        label {
            display: block;
            margin-bottom: 8px;
            color: #333;
            font-weight: 500;
            font-size: 14px;
        }
        
        input[type="text"],
        input[type="password"] {
            width: 100%;
            padding: 12px 15px;
            border: 2px solid #e0e0e0;
            border-radius: 8px;
            font-size: 16px;
            transition: all 0.3s;
            background: #f8f9fa;
        }
        
        input[type="text"]:focus,
        input[type="password"]:focus {
            outline: none;
            border-color: #667eea;
            background: white;
        }
        
        button {
            width: 100%;
            padding: 14px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            margin-top: 10px;
        }
        
        button:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(102, 126, 234, 0.4);
        }
        
        button:active {
            transform: translateY(0);
        }
        
        .error {
            background: #fee;
            color: #c33;
            padding: 12px 15px;
            border-radius: 8px;
            margin-bottom: 20px;
            border-left: 4px solid #c33;
            font-size: 14px;
            animation: shake 0.4s;
        }
        
        @keyframes shake {
            0%, 100% { transform: translateX(0); }
            25% { transform: translateX(-10px); }
            75% { transform: translateX(10px); }
        }
        
        .info {
            background: #e3f2fd;
            color: #1976d2;
            padding: 12px 15px;
            border-radius: 8px;
            margin-bottom: 20px;
            border-left: 4px solid #1976d2;
            font-size: 14px;
        }
        
        .info-icon {
            margin-right: 8px;
        }
        
        .step-indicator {
            text-align: center;
            margin-bottom: 25px;
            padding: 15px;
            background: #f8f9fa;
            border-radius: 8px;
        }
        
        .step-indicator .step {
            display: inline-block;
            width: 30px;
            height: 30px;
            line-height: 30px;
            border-radius: 50%;
            background: #e0e0e0;
            color: #666;
            font-weight: bold;
            margin: 0 5px;
            transition: all 0.3s;
        }
        
        .step-indicator .step.active {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            transform: scale(1.1);
        }
        
        .step-indicator .step.completed {
            background: #4caf50;
            color: white;
        }
        
        .code-input {
            font-size: 24px;
            letter-spacing: 8px;
            text-align: center;
            font-weight: bold;
        }
        
        .footer {
            text-align: center;
            margin-top: 25px;
            padding-top: 25px;
            border-top: 1px solid #e0e0e0;
            color: #666;
            font-size: 13px;
        }
        
        .footer a {
            color: #667eea;
            text-decoration: none;
        }
        
        .footer a:hover {
            text-decoration: underline;
        }
        
        @media (max-width: 480px) {
            .login-container {
                padding: 30px 20px;
            }
            
            h1 {
                font-size: 20px;
            }
        }