:root {
            --primary-color: #1a73e8;
            --primary-dark: #0d47a1;
            --secondary-color: #f8f9fa;
            --accent-color: #e8f0fe;
            --text-color: #202124;
            --light-text: #5f6368;
            --error-color: #d32f2f;
            --success-color: #388e3c;
            --border-radius: 8px;
            --box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background-color: var(--secondary-color);
            color: var(--text-color);
            line-height: 1.6;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            background-image: linear-gradient(135deg, #f5f7fa 0%, #e8f0fe 100%);
        }
        
        .login-container {
            width: 100%;
            max-width: 450px;
            padding: 2rem;
        }
        
        .login-card {
            background-color: white;
            border-radius: var(--border-radius);
            box-shadow: var(--box-shadow);
            padding: 2.5rem;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .login-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 6px;
            background: linear-gradient(90deg, var(--primary-color), var(--primary-dark));
        }
        
        .logo {
            margin-bottom: 1.5rem;
        }
        
        .logo i {
            font-size: 3.5rem;
            color: var(--primary-color);
            margin-bottom: 0.5rem;
        }
        
        .logo h1 {
            font-size: 1.8rem;
            color: var(--primary-color);
            margin-bottom: 0.5rem;
        }
        
        .logo p {
            color: var(--light-text);
            font-size: 0.9rem;
        }
        
        .message {
            padding: 1rem;
            margin-bottom: 1.5rem;
            border-radius: var(--border-radius);
            font-weight: 500;
            display: flex;
            align-items: center;
            justify-content: center;
            text-align: left;
        }
        
        .message i {
            margin-right: 0.8rem;
        }
        
        .error {
            background-color: #ffebee;
            color: var(--error-color);
            border-left: 4px solid var(--error-color);
        }
        
        .success {
            background-color: #e8f5e9;
            color: var(--success-color);
            border-left: 4px solid var(--success-color);
        }
        
        .form-group {
            margin-bottom: 1.5rem;
            text-align: left;
        }
        
        .form-group label {
            display: block;
            margin-bottom: 0.5rem;
            font-weight: 500;
            color: var(--light-text);
        }
        
        .input-with-icon {
            position: relative;
        }
        
        .input-with-icon i {
            position: absolute;
            left: 1rem;
            top: 50%;
            transform: translateY(-50%);
            color: var(--light-text);
        }
        
        .form-control {
            width: 100%;
            padding: 0.8rem 1rem 0.8rem 3rem;
            border: 1px solid #ddd;
            border-radius: var(--border-radius);
            font-size: 1rem;
            transition: border-color 0.3s, box-shadow 0.3s;
        }
        
        .form-control:focus {
            outline: none;
            border-color: var(--primary-color);
            box-shadow: 0 0 0 2px var(--accent-color);
        }
        
        .password-toggle {
            position: absolute;
            right: 1rem;
            top: 50%;
            transform: translateY(-50%);
            cursor: pointer;
            color: var(--light-text);
        }
        
        .remember-forgot {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 1.5rem;
        }
        
        .remember-me {
            display: flex;
            align-items: center;
        }
        
        .remember-me input {
            margin-right: 0.5rem;
        }
        
        .forgot-password a {
            color: var(--primary-color);
            text-decoration: none;
            font-size: 0.9rem;
        }
        
        .forgot-password a:hover {
            text-decoration: underline;
        }
        
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.8rem 1.5rem;
            background-color: var(--primary-color);
            color: white;
            border: none;
            border-radius: var(--border-radius);
            font-size: 1rem;
            font-weight: 500;
            cursor: pointer;
            transition: background-color 0.3s;
            width: 100%;
        }
        
        .btn i {
            margin-right: 0.5rem;
        }
        
        .btn:hover {
            background-color: var(--primary-dark);
        }
        
        .btn:disabled {
            background-color: #cccccc;
            cursor: not-allowed;
        }
        
        .login-footer {
            margin-top: 1.5rem;
            text-align: center;
            font-size: 0.9rem;
            color: var(--light-text);
        }
        
        .login-footer a {
            color: var(--primary-color);
            text-decoration: none;
        }
        
        .login-footer a:hover {
            text-decoration: underline;
        }
        
        .countdown {
            color: var(--error-color);
            font-weight: bold;
        }
        
        @media (max-width: 576px) {
            .login-card {
                padding: 1.5rem;
            }
            
            .logo i {
                font-size: 2.5rem;
            }
            
            .logo h1 {
                font-size: 1.5rem;
            }
        }