* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        body {
            background-color: #232b38;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            padding: 20px;
        }

        .login-container {
            width: 100%;
            max-width: 420px;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
            animation: fadeIn 0.8s ease-out;
        }

        .login-header {
            background: linear-gradient(to right, #f3f6f5 0%, #f3f6f5 100%);
            padding: 30px 20px;
            text-align: center;
        }

        .login-header img {
            max-width: 80%;
            height: auto;
        }

        .login-form {
            background-color: #2c3646;
            padding: 40px 30px;
        }

        .form-group {
            margin-bottom: 25px;
            position: relative;
        }

        .form-group label {
            display: block;
            color: #b0b7c3;
            margin-bottom: 8px;
            font-size: 14px;
            font-weight: 500;
        }

        .form-group input {
            width: 100%;
            padding: 14px 15px 14px 45px;
            border: none;
            border-radius: 8px;
            background-color: #374151;
            color: #e5e7eb;
            font-size: 15px;
            transition: all 0.3s ease;
        }

        .form-group input:focus {
            outline: none;
            background-color: #404b5c;
            box-shadow: 0 0 0 2px rgba(79, 156, 249, 0.3);
        }

        .form-group i {
            position: absolute;
            left: 15px;
            top: 40px;
            color: #9ca3af;
            font-size: 18px;
        }
        .login-btn {
            width: 100%;
            padding: 14px;
            background: linear-gradient(to right, #4f9cf9, #2d76cc);
            border: none;
            border-radius: 8px;
            color: white;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(79, 156, 249, 0.3);
        }

        .login-btn:hover {
            background: linear-gradient(to right, #2d76cc, #4f9cf9);
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(79, 156, 249, 0.4);
        }

        .login-btn:active {
            transform: translateY(0);
        }


        @keyframes fadeIn {
            from { opacity: 0; transform: translateY(20px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .error-message {
            color: #f87171;
            font-size: 14px;
            margin-top: 5px;
            display: none;
        }

        @media (max-width: 480px) {
            .login-container {
                max-width: 100%;
            }
            
            .login-form {
                padding: 30px 20px;
            }
        }