* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Helvetica', 'Arial', 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;
            padding: 40px 30px;
            border-radius: 10px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.2);
            width: 100%;
            max-width: 400px;
        }
        
        .logo {
            text-align: center;
            margin-bottom: 30px;
        }
        
        .logo-icon {
            font-size: 48px;
            color: #3c8dbc;
            margin-bottom: 10px;
        }
        
        .logo h1 {
            color: #2c3e50;
            font-size: 24px;
            font-weight: 300;
        }
        
        .error-message {
            background: #fee;
            color: #c33;
            padding: 12px;
            border-radius: 6px;
            margin-bottom: 20px;
            border: 1px solid #fcc;
            text-align: center;
            font-size: 14px;
        }
        
        .form-group {
            margin-bottom: 20px;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 8px;
            color: #2c3e50;
            font-weight: 500;
        }
        
        .input-with-icon {
            position: relative;
        }
        
        .input-icon {
            position: absolute;
            left: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: #7f8c8d;
        }
        
        .form-control {
            width: 100%;
            padding: 12px 15px 12px 45px;
            border: 2px solid #ecf0f1;
            border-radius: 6px;
            font-size: 16px;
            transition: border-color 0.3s ease;
            background: #fafafa;
        }
        
        .form-control:focus {
            outline: none;
            border-color: #3c8dbc;
            background: white;
        }
        
        .btn-login {
            width: 100%;
            padding: 14px;
            background: #3c8dbc;
            color: white;
            border: none;
            border-radius: 6px;
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            transition: background-color 0.3s ease;
        }
        
        .btn-login:hover {
            background: #367fa9;
        }
        
        .login-footer {
            text-align: center;
            margin-top: 20px;
            color: #7f8c8d;
            font-size: 12px;
        }
        
        /* Мобильная адаптация */
        @media (max-width: 480px) {
            body {
                padding: 10px;
            }
            
            .login-container {
                padding: 30px 20px;
            }
            
            .logo-icon {
                font-size: 40px;
            }
            
            .logo h1 {
                font-size: 20px;
            }
        }
        
        /* Очень маленькие экраны */
        @media (max-width: 320px) {
            .login-container {
                padding: 25px 15px;
            }
        }