:root {
            --primary-color: #2c7be5;
            --primary-dark: #1a68d1;
            --secondary-color: #00d97e;
            --text-dark: #2d3748;
            --text-light: #718096;
            --bg-light: #f9fbfd;
            --border-radius: 12px;
            --shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            color: var(--text-dark);
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            padding: 20px;
            line-height: 1.6;
        }
        
        .login-container {
            display: flex;
            width: 100%;
            max-width: 1000px;
            background: white;
            border-radius: var(--border-radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            min-height: 600px;
        }
        
        .login-illustration {
            flex: 1;
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            padding: 40px;
            color: white;
            position: relative;
            overflow: hidden;
        }
        
        .login-illustration::before {
            content: '';
            position: absolute;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            top: -50px;
            right: -50px;
        }
        
        .login-illustration::after {
            content: '';
            position: absolute;
            width: 150px;
            height: 150px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            bottom: -30px;
            left: -30px;
        }
        
        .illustration-content {
            text-align: center;
            z-index: 1;
            max-width: 400px;
        }
        
        .illustration-icon {
            font-size: 80px;
            margin-bottom: 20px;
            display: block;
            color: rgba(255, 255, 255, 0.9);
        }
        
        .illustration-content h2 {
            font-size: 28px;
            margin-bottom: 15px;
            font-weight: 600;
        }
        
        .illustration-content p {
            font-size: 16px;
            opacity: 0.9;
            margin-bottom: 30px;
        }
        
        .features-list {
            text-align: left;
            margin-top: 30px;
        }
        
        .feature-item {
            display: flex;
            align-items: center;
            margin-bottom: 15px;
            font-size: 15px;
        }
        
        .feature-item i {
            margin-right: 10px;
            font-size: 18px;
            color: var(--secondary-color);
        }
        
        .login-form-container {
            flex: 1;
            padding: 50px 40px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        
        .logo {
            display: flex;
            align-items: center;
            margin-bottom: 30px;
        }
        
        .logo-icon {
            font-size: 28px;
            color: var(--primary-color);
            margin-right: 10px;
        }
        
        .logo-text {
            font-size: 22px;
            font-weight: 700;
            color: var(--text-dark);
        }
        
        .welcome-text h1 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-dark);
        }
        
        .welcome-text p {
            color: var(--text-light);
            margin-bottom: 30px;
        }
        
        .form-group {
            margin-bottom: 20px;
            position: relative;
        }
        
        .form-label {
            display: block;
            margin-bottom: 8px;
            font-weight: 500;
            color: var(--text-dark);
        }
        
        .input-with-icon {
            position: relative;
        }
        
        .input-icon {
            position: absolute;
            left: 15px;
            top: 50%;
            transform: translateY(-50%);
            color: var(--text-light);
            font-size: 18px;
        }
        
        .form-control {
            width: 100%;
            padding: 12px 15px 12px 45px;
            border: 1px solid #e2e8f0;
            border-radius: 8px;
            font-size: 16px;
            transition: var(--transition);
            background-color: var(--bg-light);
        }
        
        .form-control:focus {
            border-color: var(--primary-color);
            box-shadow: 0 0 0 3px rgba(44, 123, 229, 0.1);
            outline: none;
        }
        
        .password-toggle {
            position: absolute;
            right: 15px;
            top: 50%;
            transform: translateY(-50%);
            background: none;
            border: none;
            color: var(--text-light);
            cursor: pointer;
            font-size: 18px;
        }
        
        .btn-login {
            background: var(--primary-color);
            color: white;
            border: none;
            border-radius: 8px;
            padding: 14px;
            font-size: 16px;
            font-weight: 600;
            width: 100%;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            justify-content: center;
            align-items: center;
            margin-top: 10px;
        }
        
        .btn-login:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 5px 15px rgba(44, 123, 229, 0.3);
        }
        
        .btn-login:active {
            transform: translateY(0);
        }
        
        .btn-login i {
            margin-left: 8px;
        }
        
        .alert {
            padding: 12px 15px;
            border-radius: 8px;
            margin-bottom: 20px;
            font-size: 14px;
            display: flex;
            align-items: center;
        }
        
        .alert-danger {
            background-color: rgba(245, 101, 101, 0.1);
            color: #e53e3e;
            border: 1px solid rgba(229, 62, 62, 0.2);
        }
        
        .alert i {
            margin-right: 10px;
            font-size: 18px;
        }
        
        /* Responsive Design */
        @media (max-width: 768px) {
            .login-container {
                flex-direction: column;
                max-width: 450px;
            }
            
            .login-illustration {
                padding: 30px 20px;
            }
            
            .illustration-content h2 {
                font-size: 24px;
            }
            
            .login-form-container {
                padding: 40px 30px;
            }
        }
        
        @media (max-width: 480px) {
            .login-form-container {
                padding: 30px 20px;
            }
        }